Fair Value Measurements - Assets (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	$ 1,378,000	$ 1,361,000
Company Owned Life Insurance - Deferred Compensation Assets	238,000	310,000
Available-for-sale Securities, Fair Value Disclosure [Abstract]
Large Capitalization Registered Investment Companies	62,000	71,000
Mid Capitalization Registered Investment Companies	7,000	7,000
Small Capitalization Registered Investment Companies	14,000	13,000
International Developed And Emerging Markets Registered Investment Companies	36,000	37,000
Fixed Income Registered Investment Companies	6,000	6,000
Assets, Fair Value Disclosure	1,741,000us-gaap_AssetsFairValueDisclosure	1,805,000us-gaap_AssetsFairValueDisclosure
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	62,000	71,000
Mid Capitalization Registered Investment Companies	7,000	7,000
Small Capitalization Registered Investment Companies	14,000	13,000
International Developed And Emerging Markets Registered Investment Companies	36,000	37,000
Fixed Income Registered Investment Companies	6,000	6,000
Assets, Fair Value Disclosure	125,000	134,000
Fair Value, Inputs, Level 2 [Member]
Cash Surrender Value, Fair Value Disclosure [Abstract]
Company Owned Life Insurance	1,378,000	1,361,000
Company Owned Life Insurance - Deferred Compensation Assets	238,000	310,000
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	1,616,000	1,671,000
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.

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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 international developed and emerging markets common stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	kwr_
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- 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

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

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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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- Details

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