Reflects the amount charged in the current period due to currency conversion impacts of an equity affiliate.

No definition available.

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

- Definition

Reflects the effect on diluted earnings per share of a currency conversion charge during the period due to an equity affiliate.

+ References

No definition available.

+ Details

Name:	kwr_EffectOfCurrencyConversionPerDilutedShare
Namespace Prefix:	kwr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount recognized as revenue under net reporting arrangements

+ References

No definition available.

+ Details

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

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=kwr_EquityMethodInvesteeNameKelkoVenezuelaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Condensed Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	$ 24,513			$ 24,513		$ 22,817
Revenue Recognized Under Net Reporting Arrangements	11,400	$ 11,000		21,800	$ 22,100
Kelko (Venezuela) [Member]
Schedule of Equity Method Investments [Line Items]
Effect Of Currency Conversion, Amount	$ 300		$ 100
Effect Of Currency Conversion, Per Diluted Share	$ 0.03		$ 0.01
Equity Method Investment	$ 200			$ 200