| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.20.2 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 139 </ContextCount> |
| <ElementCount> 429 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> false </FootnotesReported> |
| <SegmentCount> 44 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 7 </UnitCount> |
| <MyReports> |
| | <Report instance="dit-20200930.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.amcon.com/role/DocumentDocumentAndEntityInformation </Role> |
| | | <ShortName> Document and Entity Information </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 00100 - Statement - CONSOLIDATED BALANCE SHEETS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/StatementConsolidatedBalanceSheets </Role> |
| | | <ShortName> CONSOLIDATED BALANCE SHEETS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 00105 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/StatementConsolidatedBalanceSheetsParenthetical </Role> |
| | | <ShortName> CONSOLIDATED BALANCE SHEETS (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 00200 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/StatementConsolidatedStatementsOfOperations </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF OPERATIONS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 00205 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/StatementConsolidatedStatementsOfOperationsParenthetical </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 00300 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS??? EQUITY </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/StatementConsolidatedStatementsOfShareholdersEquity </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF SHAREHOLDERS??? EQUITY </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 00305 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS??? EQUITY (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/StatementConsolidatedStatementsOfShareholdersEquityParenthetical </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF SHAREHOLDERS??? EQUITY (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 00400 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/StatementConsolidatedStatementsOfCashFlows </Role> |
| | | <ShortName> CONSOLIDATED STATEMENTS OF CASH FLOWS </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 10101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureSummaryOfSignificantAccountingPolicies </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 10201 - Disclosure - ACQUISITIONS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureAcquisitions </Role> |
| | | <ShortName> ACQUISITIONS </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 10301 - Disclosure - EARNINGS PER SHARE </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEarningsPerShare </Role> |
| | | <ShortName> EARNINGS PER SHARE </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 10401 - Disclosure - PROPERTY AND EQUIPMENT, NET </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosurePropertyAndEquipmentNet </Role> |
| | | <ShortName> PROPERTY AND EQUIPMENT, NET </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 10501 - Disclosure - LEASES </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeases </Role> |
| | | <ShortName> LEASES </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 10601 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureGoodwillAndOtherIntangibleAssets </Role> |
| | | <ShortName> GOODWILL AND OTHER INTANGIBLE ASSETS </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 10701 - Disclosure - EQUITY METHOD INVESTMENT </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityMethodInvestment </Role> |
| | | <ShortName> EQUITY METHOD INVESTMENT </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 10801 - Disclosure - DEBT </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureDebt </Role> |
| | | <ShortName> DEBT </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 10901 - Disclosure - INCOME TAXES </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureIncomeTaxes </Role> |
| | | <ShortName> INCOME TAXES </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 11001 - Disclosure - PROFIT SHARING PLAN </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureProfitSharingPlan </Role> |
| | | <ShortName> PROFIT SHARING PLAN </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 11101 - Disclosure - COMMITMENTS AND CONTINGENCIES </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureCommitmentsAndContingencies </Role> |
| | | <ShortName> COMMITMENTS AND CONTINGENCIES </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 11201 - Disclosure - EQUITY-BASED INCENTIVE AWARDS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityBasedIncentiveAwards </Role> |
| | | <ShortName> EQUITY-BASED INCENTIVE AWARDS </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 11301 - Disclosure - BUSINESS SEGMENTS </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureBusinessSegments </Role> |
| | | <ShortName> BUSINESS SEGMENTS </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 11401 - Disclosure - TREASURY STOCK </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureTreasuryStock </Role> |
| | | <ShortName> TREASURY STOCK </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 11501 - Disclosure - IMPACT OF COVID-19 </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureImpactOfCovid19 </Role> |
| | | <ShortName> IMPACT OF COVID-19 </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 11601 - Disclosure - SUBSEQUENT EVENT </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureSubsequentEvent </Role> |
| | | <ShortName> SUBSEQUENT EVENT </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 20102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 30103 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureSummaryOfSignificantAccountingPolicies </ParentRole> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 30303 - Disclosure - EARNINGS PER SHARE (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEarningsPerShareTables </Role> |
| | | <ShortName> EARNINGS PER SHARE (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureEarningsPerShare </ParentRole> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 30403 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosurePropertyAndEquipmentNetTables </Role> |
| | | <ShortName> PROPERTY AND EQUIPMENT, NET (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosurePropertyAndEquipmentNet </ParentRole> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 30501 - Disclosure - LEASES (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeasesTables </Role> |
| | | <ShortName> LEASES (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureLeases </ParentRole> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 30603 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureGoodwillAndOtherIntangibleAssetsTables </Role> |
| | | <ShortName> GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureGoodwillAndOtherIntangibleAssets </ParentRole> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 30703 - Disclosure - EQUITY METHOD INVESTMENT (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityMethodInvestmentTables </Role> |
| | | <ShortName> EQUITY METHOD INVESTMENT (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureEquityMethodInvestment </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 30803 - Disclosure - DEBT (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureDebtTables </Role> |
| | | <ShortName> DEBT (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureDebt </ParentRole> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 30903 - Disclosure - INCOME TAXES (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureIncomeTaxesTables </Role> |
| | | <ShortName> INCOME TAXES (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureIncomeTaxes </ParentRole> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 31103 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureCommitmentsAndContingenciesTables </Role> |
| | | <ShortName> COMMITMENTS AND CONTINGENCIES (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureCommitmentsAndContingencies </ParentRole> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 31203 - Disclosure - EQUITY-BASED INCENTIVE AWARDS (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityBasedIncentiveAwardsTables </Role> |
| | | <ShortName> EQUITY-BASED INCENTIVE AWARDS (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureEquityBasedIncentiveAwards </ParentRole> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 31303 - Disclosure - BUSINESS SEGMENTS (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureBusinessSegmentsTables </Role> |
| | | <ShortName> BUSINESS SEGMENTS (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureBusinessSegments </ParentRole> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 40101 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 40102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment to Accounting Pronouncements (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentToAccountingPronouncementsDetails </Role> |
| | | <ShortName> SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment to Accounting Pronouncements (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 40201 - Disclosure - ACQUISITION (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureAcquisitionDetails </Role> |
| | | <ShortName> ACQUISITION (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureAcquisitions </ParentRole> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 40301 - Disclosure - EARNINGS PER SHARE (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEarningsPerShareDetails </Role> |
| | | <ShortName> EARNINGS PER SHARE (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureEarningsPerShareTables </ParentRole> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 40401 - Disclosure - PROPERTY AND EQUIPMENT, NET (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosurePropertyAndEquipmentNetDetails </Role> |
| | | <ShortName> PROPERTY AND EQUIPMENT, NET (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosurePropertyAndEquipmentNetTables </ParentRole> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 40501 - Disclosure - LEASES (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeasesDetails </Role> |
| | | <ShortName> LEASES (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureLeasesTables </ParentRole> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 40502 - Disclosure - LEASES - Components of lease costs (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeasesComponentsOfLeaseCostsDetails </Role> |
| | | <ShortName> LEASES - Components of lease costs (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 40503 - Disclosure - LEASES - Maturities of lease liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeasesMaturitiesOfLeaseLiabilitiesDetails </Role> |
| | | <ShortName> LEASES - Maturities of lease liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 40504 - Disclosure - LEASES - Weighted-average remaining lease term and weighted-average discount rate (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeasesWeightedAverageRemainingLeaseTermAndWeightedAverageDiscountRateDetails </Role> |
| | | <ShortName> LEASES - Weighted-average remaining lease term and weighted-average discount rate (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 40505 - Disclosure - LEASES - Other information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeasesOtherInformationDetails </Role> |
| | | <ShortName> LEASES - Other information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 40506 - Disclosure - LEASES - Future minimum operating lease payments (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureLeasesFutureMinimumOperatingLeasePaymentsDetails </Role> |
| | | <ShortName> LEASES - Future minimum operating lease payments (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 47 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R48.htm </HtmlFileName> |
| | | <LongName> 40601 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureGoodwillAndOtherIntangibleAssetsGoodwillDetails </Role> |
| | | <ShortName> GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 48 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 40602 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS - Other Intangible Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureGoodwillAndOtherIntangibleAssetsOtherIntangibleAssetsDetails </Role> |
| | | <ShortName> GOODWILL AND OTHER INTANGIBLE ASSETS - Other Intangible Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 49 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 40701 - Disclosure - EQUITY METHOD INVESTMENT (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityMethodInvestmentDetails </Role> |
| | | <ShortName> EQUITY METHOD INVESTMENT (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureEquityMethodInvestmentTables </ParentRole> |
| | | <Position> 50 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R51.htm </HtmlFileName> |
| | | <LongName> 40702 - Disclosure - EQUITY METHOD INVESTMENT - Equity investee's summarized financial data (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityMethodInvestmentEquityInvesteeSSummarizedFinancialDataDetails </Role> |
| | | <ShortName> EQUITY METHOD INVESTMENT - Equity investee's summarized financial data (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 51 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 40801 - Disclosure - DEBT - Credit Facility (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureDebtCreditFacilityDetails </Role> |
| | | <ShortName> DEBT - Credit Facility (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 52 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 40802 - Disclosure - DEBT - Long-Term Debt (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureDebtLongTermDebtDetails </Role> |
| | | <ShortName> DEBT - Long-Term Debt (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 53 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 40803 - Disclosure - DEBT - Aggregate Minimum Principal Maturities of Long-Term Debt and Other (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureDebtAggregateMinimumPrincipalMaturitiesOfLongTermDebtAndOtherDetails </Role> |
| | | <ShortName> DEBT - Aggregate Minimum Principal Maturities of Long-Term Debt and Other (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 54 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 40901 - Disclosure - INCOME TAXES (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureIncomeTaxesDetails </Role> |
| | | <ShortName> INCOME TAXES (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureIncomeTaxesTables </ParentRole> |
| | | <Position> 55 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 41001 - Disclosure - PROFIT SHARING PLAN (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureProfitSharingPlanDetails </Role> |
| | | <ShortName> PROFIT SHARING PLAN (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureProfitSharingPlan </ParentRole> |
| | | <Position> 56 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 41101 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureCommitmentsAndContingenciesDetails </Role> |
| | | <ShortName> COMMITMENTS AND CONTINGENCIES (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureCommitmentsAndContingenciesTables </ParentRole> |
| | | <Position> 57 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R58.htm </HtmlFileName> |
| | | <LongName> 41201 - Disclosure - EQUITY-BASED INCENTIVE AWARDS - Omnibus Plans and Stock Options (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityBasedIncentiveAwardsOmnibusPlansAndStockOptionsDetails </Role> |
| | | <ShortName> EQUITY-BASED INCENTIVE AWARDS - Omnibus Plans and Stock Options (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 58 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R59.htm </HtmlFileName> |
| | | <LongName> 41202 - Disclosure - EQUITY-BASED INCENTIVE AWARDS - Authorized and Approved Restricted Stock Unit Awards (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityBasedIncentiveAwardsAuthorizedAndApprovedRestrictedStockUnitAwardsDetails </Role> |
| | | <ShortName> EQUITY-BASED INCENTIVE AWARDS - Authorized and Approved Restricted Stock Unit Awards (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 59 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 41203 - Disclosure - EQUITY-BASED INCENTIVE AWARDS - Restricted Stock Unit Activity (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureEquityBasedIncentiveAwardsRestrictedStockUnitActivityDetails </Role> |
| | | <ShortName> EQUITY-BASED INCENTIVE AWARDS - Restricted Stock Unit Activity (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 60 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R61.htm </HtmlFileName> |
| | | <LongName> 41301 - Disclosure - BUSINESS SEGMENTS (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureBusinessSegmentsDetails </Role> |
| | | <ShortName> BUSINESS SEGMENTS (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureBusinessSegmentsTables </ParentRole> |
| | | <Position> 61 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R62.htm </HtmlFileName> |
| | | <LongName> 41401 - Disclosure - TREASURY STOCK (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureTreasuryStockDetails </Role> |
| | | <ShortName> TREASURY STOCK (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureTreasuryStock </ParentRole> |
| | | <Position> 62 </Position> |
| | | </Report> |
| | <Report instance="dit-20200930.xml"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R63.htm </HtmlFileName> |
| | | <LongName> 41601 - Disclosure - SUBSEQUENT EVENT (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.amcon.com/role/DisclosureSubsequentEventDetails </Role> |
| | | <ShortName> SUBSEQUENT EVENT (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.amcon.com/role/DisclosureSubsequentEvent </ParentRole> |
| | | <Position> 63 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File> dit-20200930.xml </File> |
| | <File> dit-20200930.xsd </File> |
| | <File> dit-20200930_cal.xml </File> |
| | <File> dit-20200930_def.xml </File> |
| | <File> dit-20200930_lab.xml </File> |
| | <File> dit-20200930_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> |
| | <BaseTaxonomy> http://fasb.org/srt/2019-01-31 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |