| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.19.3 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 128 </ContextCount> |
| <ElementCount> 271 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> false </FootnotesReported> |
| <SegmentCount> 20 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 4 </UnitCount> |
| <MyReports> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 00090 - Document - Document and Entity Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DocumentDocumentAndEntityInformation </Role> |
| | | <ShortName> Document and Entity Information </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 00100 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/StatementCondensedConsolidatedBalanceSheets </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 00105 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/StatementCondensedConsolidatedBalanceSheetsParenthetical </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 00200 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/StatementCondensedConsolidatedStatementsOfOperations </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 00300 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/StatementCondensedConsolidatedStatementsOfShareholdersEquity </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 00400 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/StatementCondensedConsolidatedStatementsOfCashFlows </Role> |
| | | <ShortName> CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 10101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureSummaryOfSignificantAccountingPolicies </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 10201 - Disclosure - REVENUE </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureRevenue </Role> |
| | | <ShortName> REVENUE </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 10301 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensation </Role> |
| | | <ShortName> EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 10401 - Disclosure - STOCKHOLDERS' EQUITY </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureStockholdersEquity </Role> |
| | | <ShortName> STOCKHOLDERS' EQUITY </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 10501 - Disclosure - RELATED PARTY TRANSACTIONS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureRelatedPartyTransactions </Role> |
| | | <ShortName> RELATED PARTY TRANSACTIONS </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 10601 - Disclosure - OTHER LONG TERM NOTES </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureOtherLongTermNotes </Role> |
| | | <ShortName> OTHER LONG TERM NOTES </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 10701 - Disclosure - LEASE AMENDMENT </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureLeaseAmendment </Role> |
| | | <ShortName> LEASE AMENDMENT </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 20102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 30103 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureSummaryOfSignificantAccountingPolicies </ParentRole> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 30203 - Disclosure - REVENUE (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureRevenueTables </Role> |
| | | <ShortName> REVENUE (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureRevenue </ParentRole> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 30303 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensationTables </Role> |
| | | <ShortName> EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensation </ParentRole> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 30603 - Disclosure - OTHER LONG TERM NOTES (Tables) </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureOtherLongTermNotesTables </Role> |
| | | <ShortName> OTHER LONG TERM NOTES (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureOtherLongTermNotes </ParentRole> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 30703 - Disclosure - LEASE AMENDMENT (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureLeaseAmendmentTables </Role> |
| | | <ShortName> LEASE AMENDMENT (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureLeaseAmendment </ParentRole> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 40101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Inventories (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureSummaryOfSignificantAccountingPoliciesInventoriesDetails </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Inventories (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 40102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basic and diluted earnings (loss) per common share (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureSummaryOfSignificantAccountingPoliciesBasicAndDilutedEarningsLossPerCommonShareDetails </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basic and diluted earnings (loss) per common share (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 40103 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 40201 - Disclosure - REVENUE (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureRevenueDetails </Role> |
| | | <ShortName> REVENUE (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureRevenueTables </ParentRole> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 40202 - Disclosure - REVENUE - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureRevenueAdditionalInformationDetails </Role> |
| | | <ShortName> REVENUE - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 40301 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Share based compensation (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensationShareBasedCompensationDetails </Role> |
| | | <ShortName> EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Share based compensation (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 40302 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Stock Option Expense (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensationStockOptionExpenseDetails </Role> |
| | | <ShortName> EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Stock Option Expense (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 40303 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Stock Option Activity (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensationStockOptionActivityDetails </Role> |
| | | <ShortName> EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Stock Option Activity (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 40304 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Non-vested stock option activity (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensationNonVestedStockOptionActivityDetails </Role> |
| | | <ShortName> EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Non-vested stock option activity (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 40305 - Disclosure - EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureEquityCompensationProgramAndStockBasedCompensationAdditionalInformationDetails </Role> |
| | | <ShortName> EQUITY COMPENSATION PROGRAM AND STOCK BASED COMPENSATION - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 40401 - Disclosure - STOCKHOLDERS' EQUITY (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureStockholdersEquityDetails </Role> |
| | | <ShortName> STOCKHOLDERS' EQUITY (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureStockholdersEquity </ParentRole> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 40501 - Disclosure - RELATED PARTY TRANSACTIONS (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureRelatedPartyTransactionsDetails </Role> |
| | | <ShortName> RELATED PARTY TRANSACTIONS (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureRelatedPartyTransactions </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 40601 - Disclosure - OTHER LONG TERM NOTES (Details) </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureOtherLongTermNotesDetails </Role> |
| | | <ShortName> OTHER LONG TERM NOTES (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.inradoptics.com/role/DisclosureOtherLongTermNotesTables </ParentRole> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 40602 - Disclosure - OTHER LONG TERM NOTES - Additional Information (Details) </LongName> |
| | | <ReportType> Notes </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureOtherLongTermNotesAdditionalInformationDetails </Role> |
| | | <ShortName> OTHER LONG TERM NOTES - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 40701 - Disclosure - LEASE AMENDMENT - Future minimum lease payments (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureLeaseAmendmentFutureMinimumLeasePaymentsDetails </Role> |
| | | <ShortName> LEASE AMENDMENT - Future minimum lease payments (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="inrd-20190930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 40702 - Disclosure - LEASE AMENDMENT - Additional information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.inradoptics.com/role/DisclosureLeaseAmendmentAdditionalInformationDetails </Role> |
| | | <ShortName> LEASE AMENDMENT - Additional information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File> inrd-20190930.xml </File> |
| | <File> inrd-20190930.xsd </File> |
| | <File> inrd-20190930_cal.xml </File> |
| | <File> inrd-20190930_def.xml </File> |
| | <File> inrd-20190930_lab.xml </File> |
| | <File> inrd-20190930_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies> |
| | <BaseTaxonomy> http://fasb.org/us-gaap/2019-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://xbrl.sec.gov/dei/2019-01-31 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |