3.20.2 html 257 319 1 false 69 0 false 9 false false R1.htm 0001001 - Document - COVER Sheet http://www.knoll.com/role/COVER COVER Cover 1 false false R2.htm 1001002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://www.knoll.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS CONDENSED CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 1002003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.knoll.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 1003004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME Sheet http://www.knoll.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOME CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME Statements 4 false false R5.htm 1004005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.knoll.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 5 false false R6.htm 2101101 - Disclosure - BASIS OF PRESENTATION Sheet http://www.knoll.com/role/BASISOFPRESENTATION BASIS OF PRESENTATION Notes 6 false false R7.htm 2103102 - Disclosure - REVENUE Sheet http://www.knoll.com/role/REVENUE REVENUE Notes 7 false false R8.htm 2108103 - Disclosure - INVENTORIES Sheet http://www.knoll.com/role/INVENTORIES INVENTORIES Notes 8 false false R9.htm 2111104 - Disclosure - PENSION AND OTHER POST-EMPLOYMENT BENEFITS Sheet http://www.knoll.com/role/PENSIONANDOTHERPOSTEMPLOYMENTBENEFITS PENSION AND OTHER POST-EMPLOYMENT BENEFITS Notes 9 false false R10.htm 2114105 - Disclosure - FAIR VALUE MEASUREMENTS Sheet http://www.knoll.com/role/FAIRVALUEMEASUREMENTS FAIR VALUE MEASUREMENTS Notes 10 false false R11.htm 2117106 - Disclosure - DERIVATIVE INSTRUMENTS Sheet http://www.knoll.com/role/DERIVATIVEINSTRUMENTS DERIVATIVE INSTRUMENTS Notes 11 false false R12.htm 2120107 - Disclosure - OTHER CURRENT LIABILITIES Sheet http://www.knoll.com/role/OTHERCURRENTLIABILITIES OTHER CURRENT LIABILITIES Notes 12 false false R13.htm 2123108 - Disclosure - INDEBTEDNESS Sheet http://www.knoll.com/role/INDEBTEDNESS INDEBTEDNESS Notes 13 false false R14.htm 2128109 - Disclosure - CONTINGENT LIABILITIES AND COMMITMENTS Sheet http://www.knoll.com/role/CONTINGENTLIABILITIESANDCOMMITMENTS CONTINGENT LIABILITIES AND COMMITMENTS Notes 14 false false R15.htm 2131110 - Disclosure - RESTRUCTURING AND COST REDUCTION INITIATIVES Sheet http://www.knoll.com/role/RESTRUCTURINGANDCOSTREDUCTIONINITIATIVES RESTRUCTURING AND COST REDUCTION INITIATIVES Notes 15 false false R16.htm 2135111 - Disclosure - EQUITY Sheet http://www.knoll.com/role/EQUITY EQUITY Notes 16 false false R17.htm 2139112 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Sheet http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSS ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Notes 17 false false R18.htm 2144113 - Disclosure - EARNINGS PER SHARE Sheet http://www.knoll.com/role/EARNINGSPERSHARE EARNINGS PER SHARE Notes 18 false false R19.htm 2147114 - Disclosure - INCOME TAXES Sheet http://www.knoll.com/role/INCOMETAXES INCOME TAXES Notes 19 false false R20.htm 2149115 - Disclosure - SEGMENT INFORMATION Sheet http://www.knoll.com/role/SEGMENTINFORMATION SEGMENT INFORMATION Notes 20 false false R21.htm 2153116 - Disclosure - PREFERRED STOCK Sheet http://www.knoll.com/role/PREFERREDSTOCK PREFERRED STOCK Notes 21 false false R22.htm 2202201 - Disclosure - BASIS OF PRESENTATION (Policies) Sheet http://www.knoll.com/role/BASISOFPRESENTATIONPolicies BASIS OF PRESENTATION (Policies) Policies 22 false false R23.htm 2304301 - Disclosure - REVENUE (Tables) Sheet http://www.knoll.com/role/REVENUETables REVENUE (Tables) Tables http://www.knoll.com/role/REVENUE 23 false false R24.htm 2309302 - Disclosure - INVENTORIES (Tables) Sheet http://www.knoll.com/role/INVENTORIESTables INVENTORIES (Tables) Tables http://www.knoll.com/role/INVENTORIES 24 false false R25.htm 2312303 - Disclosure - PENSION AND OTHER POST-EMPLOYMENT BENEFITS (Tables) Sheet http://www.knoll.com/role/PENSIONANDOTHERPOSTEMPLOYMENTBENEFITSTables PENSION AND OTHER POST-EMPLOYMENT BENEFITS (Tables) Tables http://www.knoll.com/role/PENSIONANDOTHERPOSTEMPLOYMENTBENEFITS 25 false false R26.htm 2315304 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) Sheet http://www.knoll.com/role/FAIRVALUEMEASUREMENTSTables FAIR VALUE MEASUREMENTS (Tables) Tables http://www.knoll.com/role/FAIRVALUEMEASUREMENTS 26 false false R27.htm 2318305 - Disclosure - DERIVATIVE INSTRUMENTS (Tables) Sheet http://www.knoll.com/role/DERIVATIVEINSTRUMENTSTables DERIVATIVE INSTRUMENTS (Tables) Tables http://www.knoll.com/role/DERIVATIVEINSTRUMENTS 27 false false R28.htm 2321306 - Disclosure - OTHER CURRENT LIABILITIES (Tables) Sheet http://www.knoll.com/role/OTHERCURRENTLIABILITIESTables OTHER CURRENT LIABILITIES (Tables) Tables http://www.knoll.com/role/OTHERCURRENTLIABILITIES 28 false false R29.htm 2324307 - Disclosure - INDEBTEDNESS (Tables) Sheet http://www.knoll.com/role/INDEBTEDNESSTables INDEBTEDNESS (Tables) Tables http://www.knoll.com/role/INDEBTEDNESS 29 false false R30.htm 2329308 - Disclosure - CONTINGENT LIABILITIES AND COMMITMENTS (Tables) Sheet http://www.knoll.com/role/CONTINGENTLIABILITIESANDCOMMITMENTSTables CONTINGENT LIABILITIES AND COMMITMENTS (Tables) Tables http://www.knoll.com/role/CONTINGENTLIABILITIESANDCOMMITMENTS 30 false false R31.htm 2332309 - Disclosure - RESTRUCTURING AND COST REDUCTION INITIATIVES (Tables) Sheet http://www.knoll.com/role/RESTRUCTURINGANDCOSTREDUCTIONINITIATIVESTables RESTRUCTURING AND COST REDUCTION INITIATIVES (Tables) Tables http://www.knoll.com/role/RESTRUCTURINGANDCOSTREDUCTIONINITIATIVES 31 false false R32.htm 2336310 - Disclosure - EQUITY (Tables) Sheet http://www.knoll.com/role/EQUITYTables EQUITY (Tables) Tables http://www.knoll.com/role/EQUITY 32 false false R33.htm 2340311 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) Sheet http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSSTables ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) Tables http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSS 33 false false R34.htm 2345312 - Disclosure - EARNINGS PER SHARE (Tables) Sheet http://www.knoll.com/role/EARNINGSPERSHARETables EARNINGS PER SHARE (Tables) Tables http://www.knoll.com/role/EARNINGSPERSHARE 34 false false R35.htm 2350313 - Disclosure - SEGMENT INFORMATION (Tables) Sheet http://www.knoll.com/role/SEGMENTINFORMATIONTables SEGMENT INFORMATION (Tables) Tables http://www.knoll.com/role/SEGMENTINFORMATION 35 false false R36.htm 2405401 - Disclosure - REVENUE - Net Sales by Product Category (Details) Sheet http://www.knoll.com/role/REVENUENetSalesbyProductCategoryDetails REVENUE - Net Sales by Product Category (Details) Details 36 false false R37.htm 2406402 - Disclosure - REVENUE - Contract Balances (Details) Sheet http://www.knoll.com/role/REVENUEContractBalancesDetails REVENUE - Contract Balances (Details) Details 37 false false R38.htm 2407403 - Disclosure - REVENUE - Allowance for Doubtful Accounts (Details) Sheet http://www.knoll.com/role/REVENUEAllowanceforDoubtfulAccountsDetails REVENUE - Allowance for Doubtful Accounts (Details) Details 38 false false R39.htm 2410404 - Disclosure - INVENTORIES (Details) Sheet http://www.knoll.com/role/INVENTORIESDetails INVENTORIES (Details) Details http://www.knoll.com/role/INVENTORIESTables 39 false false R40.htm 2413405 - Disclosure - PENSION AND OTHER POST-EMPLOYMENT BENEFITS (Details) Sheet http://www.knoll.com/role/PENSIONANDOTHERPOSTEMPLOYMENTBENEFITSDetails PENSION AND OTHER POST-EMPLOYMENT BENEFITS (Details) Details http://www.knoll.com/role/PENSIONANDOTHERPOSTEMPLOYMENTBENEFITSTables 40 false false R41.htm 2416406 - Disclosure - FAIR VALUE MEASUREMENTS (Details) Sheet http://www.knoll.com/role/FAIRVALUEMEASUREMENTSDetails FAIR VALUE MEASUREMENTS (Details) Details http://www.knoll.com/role/FAIRVALUEMEASUREMENTSTables 41 false false R42.htm 2419407 - Disclosure - DERIVATIVE INSTRUMENTS (Details) Sheet http://www.knoll.com/role/DERIVATIVEINSTRUMENTSDetails DERIVATIVE INSTRUMENTS (Details) Details http://www.knoll.com/role/DERIVATIVEINSTRUMENTSTables 42 false false R43.htm 2422408 - Disclosure - OTHER CURRENT LIABILITIES (Details) Sheet http://www.knoll.com/role/OTHERCURRENTLIABILITIESDetails OTHER CURRENT LIABILITIES (Details) Details http://www.knoll.com/role/OTHERCURRENTLIABILITIESTables 43 false false R44.htm 2425409 - Disclosure - INDEBTEDNESS - Schedule of Long-Term Debt (Details) Sheet http://www.knoll.com/role/INDEBTEDNESSScheduleofLongTermDebtDetails INDEBTEDNESS - Schedule of Long-Term Debt (Details) Details 44 false false R45.htm 2426410 - Disclosure - INDEBTEDNESS - Schedule of Credit Facility (Details) Sheet http://www.knoll.com/role/INDEBTEDNESSScheduleofCreditFacilityDetails INDEBTEDNESS - Schedule of Credit Facility (Details) Details 45 false false R46.htm 2427411 - Disclosure - INDEBTEDNESS - Narrative (Details) Sheet http://www.knoll.com/role/INDEBTEDNESSNarrativeDetails INDEBTEDNESS - Narrative (Details) Details 46 false false R47.htm 2430412 - Disclosure - CONTINGENT LIABILITIES AND COMMITMENTS (Details) Sheet http://www.knoll.com/role/CONTINGENTLIABILITIESANDCOMMITMENTSDetails CONTINGENT LIABILITIES AND COMMITMENTS (Details) Details http://www.knoll.com/role/CONTINGENTLIABILITIESANDCOMMITMENTSTables 47 false false R48.htm 2433413 - Disclosure - RESTRUCTURING AND COST REDUCTION INITIATIVES (Details) Sheet http://www.knoll.com/role/RESTRUCTURINGANDCOSTREDUCTIONINITIATIVESDetails RESTRUCTURING AND COST REDUCTION INITIATIVES (Details) Details http://www.knoll.com/role/RESTRUCTURINGANDCOSTREDUCTIONINITIATIVESTables 48 false false R49.htm 2434414 - Disclosure - RESTRUCTURING AND COST REDUCTION INITIATIVES - Restructuring Reserve (Details) Sheet http://www.knoll.com/role/RESTRUCTURINGANDCOSTREDUCTIONINITIATIVESRestructuringReserveDetails RESTRUCTURING AND COST REDUCTION INITIATIVES - Restructuring Reserve (Details) Details 49 false false R50.htm 2437415 - Disclosure - EQUITY - Schedule of Change in Equity (Details) Sheet http://www.knoll.com/role/EQUITYScheduleofChangeinEquityDetails EQUITY - Schedule of Change in Equity (Details) Details 50 false false R51.htm 2438416 - Disclosure - EQUITY - Schedule of Change in Number of Shares of Common Stock Outstanding (Details) Sheet http://www.knoll.com/role/EQUITYScheduleofChangeinNumberofSharesofCommonStockOutstandingDetails EQUITY - Schedule of Change in Number of Shares of Common Stock Outstanding (Details) Details 51 false false R52.htm 2441417 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Changes by Component (Details) Sheet http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSSSummaryofChangesbyComponentDetails ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Changes by Component (Details) Details http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSSTables 52 false false R53.htm 2442418 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassifications (Details) Sheet http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSSReclassificationsDetails ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassifications (Details) Details http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSSTables 53 false false R54.htm 2443419 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Unrealized Gains (Losses) on Derivative Instruments (Details) Sheet http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSSSummaryofUnrealizedGainsLossesonDerivativeInstrumentsDetails ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Unrealized Gains (Losses) on Derivative Instruments (Details) Details http://www.knoll.com/role/ACCUMULATEDOTHERCOMPREHENSIVEINCOMELOSSTables 54 false false R55.htm 2446420 - Disclosure - EARNINGS PER SHARE (Details) Sheet http://www.knoll.com/role/EARNINGSPERSHAREDetails EARNINGS PER SHARE (Details) Details http://www.knoll.com/role/EARNINGSPERSHARETables 55 false false R56.htm 2448421 - Disclosure - INCOME TAXES (Details) Sheet http://www.knoll.com/role/INCOMETAXESDetails INCOME TAXES (Details) Details http://www.knoll.com/role/INCOMETAXES 56 false false R57.htm 2451422 - Disclosure - SEGMENT INFORMATION - Segment Information with Corporate Costs Excluded (Details) Sheet http://www.knoll.com/role/SEGMENTINFORMATIONSegmentInformationwithCorporateCostsExcludedDetails SEGMENT INFORMATION - Segment Information with Corporate Costs Excluded (Details) Details 57 false false R58.htm 2452423 - Disclosure - SEGMENT INFORMATION - Schedule of Changes in Carrying Amount of Goodwill (Details) Sheet http://www.knoll.com/role/SEGMENTINFORMATIONScheduleofChangesinCarryingAmountofGoodwillDetails SEGMENT INFORMATION - Schedule of Changes in Carrying Amount of Goodwill (Details) Details 58 false false R59.htm 2454424 - Disclosure - PREFERRED STOCK (Details) Sheet http://www.knoll.com/role/PREFERREDSTOCKDetails PREFERRED STOCK (Details) Details http://www.knoll.com/role/PREFERREDSTOCK 59 false false All Reports Book All Reports knl-20200930.htm ex103knl20200930.htm knl-20200930.xsd knl-20200930_cal.xml knl-20200930_def.xml knl-20200930_lab.xml knl-20200930_pre.xml knl-ex31120200930.htm knl-ex31220200930.htm knl-ex3220200930.htm http://fasb.org/us-gaap/2020-01-31 http://xbrl.sec.gov/dei/2020-01-31 http://fasb.org/srt/2020-01-31 true true