Fair Value - Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Estimate Of Fair Value Fair Value Disclosure [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	$ 1,361	$ 1,885
Company Owned Life Insurance - Deferred Compensation Assets	310	409
Large Capitalization Registered Investment Companies	71	74
Mid Capitalization Registered Investment Companies	7	6
Small Capitalization Registered Investment Companies	13	13
International Developed And Emerging Markets Registered Investment Companies	37	40
Fixed Income Registered Investment Companies	6	7
Assets Fair Value Disclosure	1,805	2,434
Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	0	0
Company Owned Life Insurance - Deferred Compensation Assets	0	0
Large Capitalization Registered Investment Companies	71	74
Mid Capitalization Registered Investment Companies	7	6
Small Capitalization Registered Investment Companies	13	13
International Developed And Emerging Markets Registered Investment Companies	37	40
Fixed Income Registered Investment Companies	6	7
Assets Fair Value Disclosure	134	140
Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	1,361	1,885
Company Owned Life Insurance - Deferred Compensation Assets	310	409
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	1,671	2,294
Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	0	0
Company Owned Life Insurance - Deferred Compensation Assets	0	0
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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- 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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- 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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- 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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- 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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- 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_
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- 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
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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

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