3.26.1 html 85 64 1 false 16 0 false 4 false false R1.htm 0000001 - Document - Cover Sheet http://www.quakerchem.com/role/Cover Cover Cover 1 false false R2.htm 0000002 - Statement - Statements of Net Assets Available for Benefits Sheet http://www.quakerchem.com/role/StatementsofNetAssetsAvailableforBenefits Statements of Net Assets Available for Benefits Statements 2 false false R3.htm 0000003 - Statement - Statements of Changes in Net Assets Available for Benefits Sheet http://www.quakerchem.com/role/StatementsofChangesinNetAssetsAvailableforBenefits Statements of Changes in Net Assets Available for Benefits Statements 3 false false R4.htm 0000004 - Disclosure - DESCRIPTION OF PLAN Sheet http://www.quakerchem.com/role/DESCRIPTIONOFPLAN DESCRIPTION OF PLAN Notes 4 false false R5.htm 0000005 - Disclosure - SUMMARY OF ACCOUNTING POLICIES Sheet http://www.quakerchem.com/role/SUMMARYOFACCOUNTINGPOLICIES SUMMARY OF ACCOUNTING POLICIES Notes 5 false false R6.htm 0000006 - Disclosure - RISKS AND UNCERTAINTIES Sheet http://www.quakerchem.com/role/RISKSANDUNCERTAINTIES RISKS AND UNCERTAINTIES Notes 6 false false R7.htm 0000007 - Disclosure - FAIR VALUE MEASURES Sheet http://www.quakerchem.com/role/FAIRVALUEMEASURES FAIR VALUE MEASURES Notes 7 false false R8.htm 0000008 - Disclosure - RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS Sheet http://www.quakerchem.com/role/RELATEDPARTYANDPARTYININTERESTTRANSACTIONS RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS Notes 8 false false R9.htm 0000009 - Disclosure - TAX STATUS Sheet http://www.quakerchem.com/role/TAXSTATUS TAX STATUS Notes 9 false false R10.htm 0000010 - Disclosure - SUBSEQUENT EVENTS Sheet http://www.quakerchem.com/role/SUBSEQUENTEVENTS SUBSEQUENT EVENTS Notes 10 false false R11.htm 0000011 - Disclosure - Schedule H, Line 4(i) – Schedule of Assets (Held At End of Year) Sheet http://www.quakerchem.com/role/ScheduleHLine4iScheduleofAssetsHeldAtEndofYear Schedule H, Line 4(i) – Schedule of Assets (Held At End of Year) Notes 11 false false R12.htm 0000012 - Disclosure - SUMMARY OF ACCOUNTING POLICIES (Policies) Sheet http://www.quakerchem.com/role/SUMMARYOFACCOUNTINGPOLICIESPolicies SUMMARY OF ACCOUNTING POLICIES (Policies) Policies 12 false false R13.htm 0000013 - Disclosure - RISKS AND UNCERTAINTIES (Tables) Sheet http://www.quakerchem.com/role/RISKSANDUNCERTAINTIESTables RISKS AND UNCERTAINTIES (Tables) Tables http://www.quakerchem.com/role/RISKSANDUNCERTAINTIES 13 false false R14.htm 0000014 - Disclosure - FAIR VALUE MEASURES (Tables) Sheet http://www.quakerchem.com/role/FAIRVALUEMEASURESTables FAIR VALUE MEASURES (Tables) Tables http://www.quakerchem.com/role/FAIRVALUEMEASURES 14 false false R15.htm 0000015 - Disclosure - DESCRIPTION OF PLAN (Details) Sheet http://www.quakerchem.com/role/DESCRIPTIONOFPLANDetails DESCRIPTION OF PLAN (Details) Details http://www.quakerchem.com/role/DESCRIPTIONOFPLAN 15 false false R16.htm 0000016 - Disclosure - RISKS AND UNCERTAINTIES (Details) Sheet http://www.quakerchem.com/role/RISKSANDUNCERTAINTIESDetails RISKS AND UNCERTAINTIES (Details) Details http://www.quakerchem.com/role/RISKSANDUNCERTAINTIESTables 16 false false R17.htm 0000017 - Disclosure - FAIR VALUE MEASURES - Plan Investments Measured at Fair Value (Details) Sheet http://www.quakerchem.com/role/FAIRVALUEMEASURESPlanInvestmentsMeasuredatFairValueDetails FAIR VALUE MEASURES - Plan Investments Measured at Fair Value (Details) Details 17 false false R18.htm 0000018 - Disclosure - FAIR VALUE MEASURES - Plan Investments Measured at Fair Value Using NAV per share (Details) Sheet http://www.quakerchem.com/role/FAIRVALUEMEASURESPlanInvestmentsMeasuredatFairValueUsingNAVpershareDetails FAIR VALUE MEASURES - Plan Investments Measured at Fair Value Using NAV per share (Details) Details 18 false false R19.htm 0000019 - Disclosure - RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS (Details) Sheet http://www.quakerchem.com/role/RELATEDPARTYANDPARTYININTERESTTRANSACTIONSDetails RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS (Details) Details http://www.quakerchem.com/role/RELATEDPARTYANDPARTYININTERESTTRANSACTIONS 19 false false R20.htm 0000020 - Disclosure - Schedule H, Line 4(i) – Schedule of Assets (Held At End of Year) (Details) Sheet http://www.quakerchem.com/role/ScheduleHLine4iScheduleofAssetsHeldAtEndofYearDetails Schedule H, Line 4(i) – Schedule of Assets (Held At End of Year) (Details) Details http://www.quakerchem.com/role/ScheduleHLine4iScheduleofAssetsHeldAtEndofYear 20 false false All Reports Book All Reports kwr-20260611.htm kwr-20260611.xsd kwr-20260611_cal.xml kwr-20260611_def.xml kwr-20260611_lab.xml kwr-20260611_pre.xml http://fasb.org/us-gaap-ebp/2026 http://xbrl.sec.gov/dei/2026 true true