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Income Taxes- Valuation Allowance Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Assets, Valuation Allowance [Roll Forward]
Balance at January 1,	$ 24,182	$ 11,730	$ 17,400
Net charges to income tax expense	5,693	14,393	1,119
Release of valuation allowance	(1,882)	(1,941)	(6,789)
Balance at December 31,	$ 27,993	$ 24,182	$ 11,730

X

- Definition

Deferred Tax Assets, Valuation Allowance, Net Charges to Income Tax Expense

+ References

No definition available.

+ Details

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Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Deferred Tax Assets, Valuation Allowance, Release of Valuation Allowance

+ References

No definition available.

+ Details

Name:	kwr_DeferredTaxAssetsValuationAllowanceReleaseOfValuationAllowance
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Deferred Tax Assets, Valuation Allowance

+ References

No definition available.

+ Details

Name:	kwr_DeferredTaxAssetsValuationAllowanceRollForward
Namespace Prefix:	kwr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant