Fair Value Measurements - Assets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Total Fair Value Inputs [Member]
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	$ 1,795	$ 1,653
Company Owned Life Insurance - Deferred Compensation Assets	396	437
Available-for-sale Securities, Fair Value Disclosure [Abstract]
Large Capitalization Registered Investment Companies	67	62
Mid Capitalization Registered Investment Companies	6	6
Small Capitalization Registered Investment Companies	12	9
International Developed And Emerging Markets Registered Investment Companies	37	37
Fixed Income Registered Investment Companies	8	8
Assets, Fair Value Disclosure	2,321	2,212
Fair Value, Inputs, Level 1 [Member]
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	0	0
Company Owned Life Insurance - Deferred Compensation Assets	0	0
Available-for-sale Securities, Fair Value Disclosure [Abstract]
Large Capitalization Registered Investment Companies	67	62
Mid Capitalization Registered Investment Companies	6	6
Small Capitalization Registered Investment Companies	12	9
International Developed And Emerging Markets Registered Investment Companies	37	37
Fixed Income Registered Investment Companies	8	8
Assets, Fair Value Disclosure	130	122
Fair Value, Inputs, Level 2 [Member]
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	1,795	1,653
Company Owned Life Insurance - Deferred Compensation Assets	396	437
Available-for-sale Securities, Fair Value Disclosure [Abstract]
Large Capitalization Registered Investment Companies	0	0
Mid Capitalization Registered Investment Companies	0	0
Small Capitalization Registered Investment Companies	0	0
International Developed And Emerging Markets Registered Investment Companies	0	0
Fixed Income Registered Investment Companies	0	0
Assets, Fair Value Disclosure	2,191	2,090
Fair Value, Inputs, Level 3 [Member]
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	0	0
Company Owned Life Insurance - Deferred Compensation Assets	0	0
Available-for-sale Securities, Fair Value Disclosure [Abstract]
Large Capitalization Registered Investment Companies	0	0
Mid Capitalization Registered Investment Companies	0	0
Small Capitalization Registered Investment Companies	0	0
International Developed And Emerging Markets Registered Investment Companies	0	0
Fixed Income Registered Investment Companies	0	0
Assets, Fair Value Disclosure	$ 0	$ 0

This element represents the fair value of mutual funds which are invested in fixed income common stock.

No definition available.

Name:	kwr_AvailableForSaleSecuritiesAssetsFixedIncomeRegisteredInvestmentCompaniesFairValueDisclosure
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the fair value of mutual funds which are invested in international developed and emerging markets common stock.

+ References

No definition available.

+ Details

Name:	kwr_AvailableForSaleSecuritiesAssetsInternationalDevelopedAndEmergingMarketsRegisteredInvestmentCompaniesFairValueDisclosure
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the fair value of mutual funds which are invested in large capitalization common stock.

+ References

No definition available.

+ Details

Name:	kwr_AvailableForSaleSecuritiesAssetsLargeCapitalizationRegisteredInvestmentCompaniesFairValueDisclosure
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the fair value of mutual funds which are invested in mid capitalization common stock.

+ References

No definition available.

+ Details

Name:	kwr_AvailableForSaleSecuritiesAssetsMidCapitalizationRegisteredInvestmentCompaniesFairValueDisclosure
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the fair value of mutual funds which are invested in small capitalization common stock.

+ References

No definition available.

+ Details

Name:	kwr_AvailableForSaleSecuritiesAssetsSmallCapitalizationRegisteredInvestmentCompaniesFairValueDisclosure
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the fair value of company owned life insurance in deferred compensation assets.

+ References

No definition available.

+ Details

Name:	kwr_CashSurrenderValueCompanyOwnedLifeInsuranceDeferredCompensationAssetsFairValueDisclosure
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the fair value of company owned life insurance.

+ References

No definition available.

+ Details

Name:	kwr_CashSurrenderValueCompanyOwnedLifeInsuranceFairValueDisclosure
Namespace Prefix:	kwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_AvailableForSaleSecuritiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_CashSurrenderValueDuePolicyholdersAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration