| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.3.1.900 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 301 </ContextCount> |
| <ElementCount> 382 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> false </FootnotesReported> |
| <SegmentCount> 98 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 11 </UnitCount> |
| <MyReports> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 0001000 - Document - Document And Entity Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/DocumentAndEntityInformation </Role> |
| | | <ShortName> Document And Entity Information </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 1001000 - Statement - Consolidated Balance Sheets </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConsolidatedBalanceSheets </Role> |
| | | <ShortName> Consolidated Balance Sheets </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 1001501 - Statement - Consolidated Balance Sheets (Parentheticals) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConsolidatedBalanceSheetsParentheticals </Role> |
| | | <ShortName> Consolidated Balance Sheets (Parentheticals) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 1002000 - Statement - Consolidated Statements of Operations </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConsolidatedStatementsOfOperations </Role> |
| | | <ShortName> Consolidated Statements of Operations </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 1003000 - Statement - Consolidated Statements of Comprehensive Income </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConsolidatedStatementsOfComprehensiveIncome </Role> |
| | | <ShortName> Consolidated Statements of Comprehensive Income </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 1004000 - Statement - Consolidated Statements of Stockholders??? Equity </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConsolidatedStatementsOfStockholdersEquity </Role> |
| | | <ShortName> Consolidated Statements of Stockholders??? Equity </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 1005000 - Statement - Consolidated Statements of Cash Flows </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConsolidatedStatementsOfCashFlows </Role> |
| | | <ShortName> Consolidated Statements of Cash Flows </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 2102100 - Disclosure - Organization and Significant Accounting Policies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPolicies </Role> |
| | | <ShortName> Organization and Significant Accounting Policies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 2103100 - Disclosure - Business Acquisitions (Notes) </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessAcquisitionsNotes </Role> |
| | | <ShortName> Business Acquisitions (Notes) </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 2104100 - Disclosure - Construction Contracts in Progress </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConstructionContractsInProgress </Role> |
| | | <ShortName> Construction Contracts in Progress </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 2105100 - Disclosure - Income Taxes </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxes </Role> |
| | | <ShortName> Income Taxes </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 2106100 - Disclosure - Common Shares </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommonShares </Role> |
| | | <ShortName> Common Shares </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 2108100 - Disclosure - Treasury Stock </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/TreasuryStock </Role> |
| | | <ShortName> Treasury Stock </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 2109100 - Disclosure - Nil Coupon Non-Redeemable Convertible Unsecured Loan Notes </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.ftek.com/role/NilCouponNonRedeemableConvertibleUnsecuredLoanNotes </Role> |
| | | <ShortName> Nil Coupon Non-Redeemable Convertible Unsecured Loan Notes </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 2110100 - Disclosure - Stock-Based Compensation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensation </Role> |
| | | <ShortName> Stock-Based Compensation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 2111100 - Disclosure - Commitments and Contingencies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommitmentsAndContingencies </Role> |
| | | <ShortName> Commitments and Contingencies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 2112100 - Disclosure - Debt Financing </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/DebtFinancing </Role> |
| | | <ShortName> Debt Financing </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 2113100 - Disclosure - Related Party Transactions </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/RelatedPartyTransactions </Role> |
| | | <ShortName> Related Party Transactions </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 2114100 - Disclosure - Defined Contribution Plan </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/DefinedContributionPlan </Role> |
| | | <ShortName> Defined Contribution Plan </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 2115100 - Disclosure - Business Segment, Geographic and Quarterly Financial Data </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialData </Role> |
| | | <ShortName> Business Segment, Geographic and Quarterly Financial Data </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 2116100 - Disclosure - Fair Value Measurements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/FairValueMeasurements </Role> |
| | | <ShortName> Fair Value Measurements </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 2202201 - Disclosure - Organization and Significant Accounting Policies (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesPolicies </Role> |
| | | <ShortName> Organization and Significant Accounting Policies (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/OrganizationAndSignificantAccountingPolicies </ParentRole> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 2302302 - Disclosure - Organization and Significant Accounting Policies (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesTables </Role> |
| | | <ShortName> Organization and Significant Accounting Policies (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/OrganizationAndSignificantAccountingPolicies </ParentRole> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 2303301 - Disclosure - Business Acquisitions (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessAcquisitionsTables </Role> |
| | | <ShortName> Business Acquisitions (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/BusinessAcquisitionsNotes </ParentRole> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 2304301 - Disclosure - Construction Contracts in Progress (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConstructionContractsInProgressTables </Role> |
| | | <ShortName> Construction Contracts in Progress (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/ConstructionContractsInProgress </ParentRole> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 2305301 - Disclosure - Income Taxes (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesTables </Role> |
| | | <ShortName> Income Taxes (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/IncomeTaxes </ParentRole> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 2310301 - Disclosure - Stock-Based Compensation (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationTables </Role> |
| | | <ShortName> Stock-Based Compensation (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/StockBasedCompensation </ParentRole> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 2311301 - Disclosure - Commitments and Contingencies (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommitmentsAndContingenciesTables </Role> |
| | | <ShortName> Commitments and Contingencies (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/CommitmentsAndContingencies </ParentRole> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 2315301 - Disclosure - Business Segment, Geographic and Quarterly Financial Data (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialDataTables </Role> |
| | | <ShortName> Business Segment, Geographic and Quarterly Financial Data (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialData </ParentRole> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 2316301 - Disclosure - Fair Value Measurements (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/FairValueMeasurementsTables </Role> |
| | | <ShortName> Fair Value Measurements (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/FairValueMeasurements </ParentRole> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 2402403 - Disclosure - Organization and Significant Accounting Policies (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesDetail </Role> |
| | | <ShortName> Organization and Significant Accounting Policies (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 2402404 - Disclosure - Organization and Significant Accounting Policies - Allowance for Doubtful Accounts (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesAllowanceForDoubtfulAccountsDetail </Role> |
| | | <ShortName> Organization and Significant Accounting Policies - Allowance for Doubtful Accounts (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 2402405 - Disclosure - Organization and Significant Accounting Policies - Accumulated Other Comprehensive Income (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeDetails </Role> |
| | | <ShortName> Organization and Significant Accounting Policies - Accumulated Other Comprehensive Income (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 2402406 - Disclosure - Organization and Significant Accounting Policies - Goodwill (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesGoodwillDetails </Role> |
| | | <ShortName> Organization and Significant Accounting Policies - Goodwill (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 2402407 - Disclosure - Organization and Significant Accounting Policies - Summary of Intangible Asset Activity (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesSummaryOfIntangibleAssetActivityDetail </Role> |
| | | <ShortName> Organization and Significant Accounting Policies - Summary of Intangible Asset Activity (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 2402408 - Disclosure - Organization and Significant Accounting Policies - Estimated Future Amortization Expense (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesEstimatedFutureAmortizationExpenseDetail </Role> |
| | | <ShortName> Organization and Significant Accounting Policies - Estimated Future Amortization Expense (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 2402409 - Disclosure - Organization and Significant Accounting Policies - Property and Equipment (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesPropertyAndEquipmentDetail </Role> |
| | | <ShortName> Organization and Significant Accounting Policies - Property and Equipment (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 2402410 - Disclosure - Organization and Significant Accounting Policies - Summary of Earnings (Loss) Per Share (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/OrganizationAndSignificantAccountingPoliciesSummaryOfEarningsLossPerShareDetail </Role> |
| | | <ShortName> Organization and Significant Accounting Policies - Summary of Earnings (Loss) Per Share (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 2403402 - Disclosure - Business Acquisitions Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessAcquisitionsNarrativeDetails </Role> |
| | | <ShortName> Business Acquisitions Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 2403403 - Disclosure - Business Acquisitions Purchase Price (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessAcquisitionsPurchasePriceDetails </Role> |
| | | <ShortName> Business Acquisitions Purchase Price (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 2403404 - Disclosure - Business Acquisitions Acquired Intangible Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessAcquisitionsAcquiredIntangibleAssetsDetails </Role> |
| | | <ShortName> Business Acquisitions Acquired Intangible Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 2403405 - Disclosure - Business Acquisitions Sales and Earnings (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessAcquisitionsSalesAndEarningsDetails </Role> |
| | | <ShortName> Business Acquisitions Sales and Earnings (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 2403406 - Disclosure - Business Acquisitions Pro Forma Data (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessAcquisitionsProFormaDataDetails </Role> |
| | | <ShortName> Business Acquisitions Pro Forma Data (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 2404402 - Disclosure - Construction Contracts in Progress (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConstructionContractsInProgressDetail </Role> |
| | | <ShortName> Construction Contracts in Progress (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/ConstructionContractsInProgressTables </ParentRole> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 2404403 - Disclosure - Construction Contracts in Progress - Summary of Contracts in Progress (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/ConstructionContractsInProgressSummaryOfContractsInProgressDetail </Role> |
| | | <ShortName> Construction Contracts in Progress - Summary of Contracts in Progress (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 2405402 - Disclosure - Income Taxes (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesDetail </Role> |
| | | <ShortName> Income Taxes (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 2405403 - Disclosure - Income Taxes - Components of Income (Loss) Domestic and Foreign (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesComponentsOfIncomeLossDomesticAndForeignDetail </Role> |
| | | <ShortName> Income Taxes - Components of Income (Loss) Domestic and Foreign (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 47 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R48.htm </HtmlFileName> |
| | | <LongName> 2405404 - Disclosure - Income Taxes - Components of Income Tax Expense (Benefit) (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesComponentsOfIncomeTaxExpenseBenefitDetail </Role> |
| | | <ShortName> Income Taxes - Components of Income Tax Expense (Benefit) (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 48 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 2405405 - Disclosure - Income Taxes - Income Tax Rate Reconciliation (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesIncomeTaxRateReconciliationDetail </Role> |
| | | <ShortName> Income Taxes - Income Tax Rate Reconciliation (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 49 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 2405406 - Disclosure - Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesSummaryOfDeferredTaxAssetsAndLiabilitiesDetail </Role> |
| | | <ShortName> Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 50 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R51.htm </HtmlFileName> |
| | | <LongName> 2405407 - Disclosure - Income Taxes - Balance Sheet Classifications of Deferred Tax Assets and Liabilities (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesBalanceSheetClassificationsOfDeferredTaxAssetsAndLiabilitiesDetail </Role> |
| | | <ShortName> Income Taxes - Balance Sheet Classifications of Deferred Tax Assets and Liabilities (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 51 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 2405408 - Disclosure - Income Taxes - Valuation Allowances (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesValuationAllowancesDetail </Role> |
| | | <ShortName> Income Taxes - Valuation Allowances (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 52 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 2405409 - Disclosure - Income Taxes - Summary of Unrecognized Tax Benefits (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/IncomeTaxesSummaryOfUnrecognizedTaxBenefitsDetail </Role> |
| | | <ShortName> Income Taxes - Summary of Unrecognized Tax Benefits (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 53 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 2406401 - Disclosure - Common Shares (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommonSharesDetail </Role> |
| | | <ShortName> Common Shares (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/CommonShares </ParentRole> |
| | | <Position> 54 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 2408401 - Disclosure - Treasury Stock (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/TreasuryStockDetail </Role> |
| | | <ShortName> Treasury Stock (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/TreasuryStock </ParentRole> |
| | | <Position> 55 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 2409401 - Disclosure - Nil Coupon Non-Redeemable Convertible Unsecured Loan Notes (Details) </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.ftek.com/role/NilCouponNonRedeemableConvertibleUnsecuredLoanNotesDetails </Role> |
| | | <ShortName> Nil Coupon Non-Redeemable Convertible Unsecured Loan Notes (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/NilCouponNonRedeemableConvertibleUnsecuredLoanNotes </ParentRole> |
| | | <Position> 56 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 2410402 - Disclosure - Stock-Based Compensation (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationDetail </Role> |
| | | <ShortName> Stock-Based Compensation (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/StockBasedCompensationTables </ParentRole> |
| | | <Position> 57 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R58.htm </HtmlFileName> |
| | | <LongName> 2410403 - Disclosure - Stock-Based Compensation - Components of Stock-Based Compensation (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationComponentsOfStockBasedCompensationDetail </Role> |
| | | <ShortName> Stock-Based Compensation - Components of Stock-Based Compensation (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 58 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R59.htm </HtmlFileName> |
| | | <LongName> 2410404 - Disclosure - Stock-Based Compensation - Weighted Average Fair Value Assumptions (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationWeightedAverageFairValueAssumptionsDetail </Role> |
| | | <ShortName> Stock-Based Compensation - Weighted Average Fair Value Assumptions (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 59 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 2410405 - Disclosure - Stock-Based Compensation - Stock Option Activity (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationStockOptionActivityDetail </Role> |
| | | <ShortName> Stock-Based Compensation - Stock Option Activity (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 60 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R61.htm </HtmlFileName> |
| | | <LongName> 2410406 - Disclosure - Stock-Based Compensation - Stock Option Activity Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationStockOptionActivityAdditionalInformationDetail </Role> |
| | | <ShortName> Stock-Based Compensation - Stock Option Activity Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 61 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R62.htm </HtmlFileName> |
| | | <LongName> 2410407 - Disclosure - Stock-Based Compensation - Summary of Outstanding Stock Options by Exercise Price Range (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationSummaryOfOutstandingStockOptionsByExercisePriceRangeDetail </Role> |
| | | <ShortName> Stock-Based Compensation - Summary of Outstanding Stock Options by Exercise Price Range (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 62 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R63.htm </HtmlFileName> |
| | | <LongName> 2410408 - Disclosure - Stock-Based Compensation - Non-vested Stock Option Activity (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationNonVestedStockOptionActivityDetail </Role> |
| | | <ShortName> Stock-Based Compensation - Non-vested Stock Option Activity (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 63 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R64.htm </HtmlFileName> |
| | | <LongName> 2410409 - Disclosure - Stock-Based Compensation - Restricted Stock Unit Activity (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/StockBasedCompensationRestrictedStockUnitActivityDetail </Role> |
| | | <ShortName> Stock-Based Compensation - Restricted Stock Unit Activity (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 64 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R65.htm </HtmlFileName> |
| | | <LongName> 2411402 - Disclosure - Commitments and Contingencies (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommitmentsAndContingenciesDetail </Role> |
| | | <ShortName> Commitments and Contingencies (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/CommitmentsAndContingenciesTables </ParentRole> |
| | | <Position> 65 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R66.htm </HtmlFileName> |
| | | <LongName> 2411403 - Disclosure - Commitments and Contingencies - Minimum Future Operating Lease Obligations (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommitmentsAndContingenciesMinimumFutureOperatingLeaseObligationsDetail </Role> |
| | | <ShortName> Commitments and Contingencies - Minimum Future Operating Lease Obligations (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 66 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R67.htm </HtmlFileName> |
| | | <LongName> 2411404 - Disclosure - Commitments and Contingencies - Future Minimum Lease Income (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommitmentsAndContingenciesFutureMinimumLeaseIncomeDetail </Role> |
| | | <ShortName> Commitments and Contingencies - Future Minimum Lease Income (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 67 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R68.htm </HtmlFileName> |
| | | <LongName> 2411405 - Disclosure - Commitments and Contingencies - Warranty Liability (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/CommitmentsAndContingenciesWarrantyLiabilityDetail </Role> |
| | | <ShortName> Commitments and Contingencies - Warranty Liability (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 68 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R69.htm </HtmlFileName> |
| | | <LongName> 2412401 - Disclosure - Debt Financing (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/DebtFinancingDetail </Role> |
| | | <ShortName> Debt Financing (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/DebtFinancing </ParentRole> |
| | | <Position> 69 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R70.htm </HtmlFileName> |
| | | <LongName> 2413401 - Disclosure - Related Party Transactions (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/RelatedPartyTransactionsDetail </Role> |
| | | <ShortName> Related Party Transactions (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/RelatedPartyTransactions </ParentRole> |
| | | <Position> 70 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R71.htm </HtmlFileName> |
| | | <LongName> 2414401 - Disclosure - Defined Contribution Plan (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/DefinedContributionPlanDetail </Role> |
| | | <ShortName> Defined Contribution Plan (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/DefinedContributionPlan </ParentRole> |
| | | <Position> 71 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R72.htm </HtmlFileName> |
| | | <LongName> 2415402 - Disclosure - Business Segment, Geographic and Quarterly Financial Data (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialDataDetail </Role> |
| | | <ShortName> Business Segment, Geographic and Quarterly Financial Data (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialDataTables </ParentRole> |
| | | <Position> 72 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R73.htm </HtmlFileName> |
| | | <LongName> 2415403 - Disclosure - Business Segment, Geographic and Quarterly Financial Data - Reporting Segment Net Sales and Gross Margin (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialDataReportingSegmentNetSalesAndGrossMarginDetail </Role> |
| | | <ShortName> Business Segment, Geographic and Quarterly Financial Data - Reporting Segment Net Sales and Gross Margin (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 73 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R74.htm </HtmlFileName> |
| | | <LongName> 2415404 - Disclosure - Business Segment, Geographic and Quarterly Financial Data - Operations by Geographic Area (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialDataOperationsByGeographicAreaDetail </Role> |
| | | <ShortName> Business Segment, Geographic and Quarterly Financial Data - Operations by Geographic Area (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 74 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R75.htm </HtmlFileName> |
| | | <LongName> 2415405 - Disclosure - Business Segment, Geographic and Quarterly Financial Data - Summary of Quarterly Financial Data (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/BusinessSegmentGeographicAndQuarterlyFinancialDataSummaryOfQuarterlyFinancialDataDetail </Role> |
| | | <ShortName> Business Segment, Geographic and Quarterly Financial Data - Summary of Quarterly Financial Data (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 75 </Position> |
| | | </Report> |
| | <Report instance="ftek-20151231.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R76.htm </HtmlFileName> |
| | | <LongName> 2416402 - Disclosure - Fair Value Measurements (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.ftek.com/role/FairValueMeasurementsDetail </Role> |
| | | <ShortName> Fair Value Measurements (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.ftek.com/role/FairValueMeasurementsTables </ParentRole> |
| | | <Position> 76 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File> ftek-20151231.xml </File> |
| | <File> ftek-20151231.xsd </File> |
| | <File> ftek-20151231_cal.xml </File> |
| | <File> ftek-20151231_def.xml </File> |
| | <File> ftek-20151231_lab.xml </File> |
| | <File> ftek-20151231_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies/> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |