Fair Value Measurements - Assets (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	$ 1,291	$ 1,361
Company Owned Life Insurance - Deferred Compensation Assets	0	310
Available-for-sale Securities, Fair Value Disclosure [Abstract]
Large Capitalization Registered Investment Companies	0	71
Mid Capitalization Registered Investment Companies	0	7
Small Capitalization Registered Investment Companies	0	13
International Developed And Emerging Markets Registered Investment Companies	0	37
Fixed Income Registered Investment Companies	0	6
Assets, Fair Value Disclosure	1,291	1,805
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	0	71
Mid Capitalization Registered Investment Companies	0	7
Small Capitalization Registered Investment Companies	0	13
International Developed And Emerging Markets Registered Investment Companies	0	37
Fixed Income Registered Investment Companies	0	6
Assets, Fair Value Disclosure	0	134
Fair Value, Inputs, Level 2 [Member]
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	1,291	1,361
Company Owned Life Insurance - Deferred Compensation Assets	0	310
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	1,291	1,671
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

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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

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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

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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

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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

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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

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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=36462937&loc=d3e19207-110258

+ Details

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- References

No definition available.

+ Details

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- References

No definition available.

+ Details

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