Share-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation [Abstract]
Exercised Options, Intrinsic Value	$ 2,500	$ 2,000	$ 3,400
Share Based Compensation [Line Items]
ESPP: Purchase Price Percentage	85.00%
ESPP: Discount from Market Price	15.00%
Director Stock Ownership Plan Maximum Number of Shares Authorized Under Plan	75,000
Director Stock Ownership Plan Terms	In 2013, the Company adopted the 2013 Director Stock Ownership Plan (the “Plan”), to encourage the Directors to increase their investment in the Company, which was approved at the Company’s May 2013 shareholders’ meeting. The Plan authorizes the issuance of up to 75,000 shares of Quaker common stock in accordance with the terms of the Plan in payment of all or a portion of the annual cash retainer payable to each of the Company’s non-employee directors in 2013 and subsequent years during the term of the Plan. Under the Plan, each director who, on May 1 of the applicable calendar year, owns less than 400% of the annual cash retainer for the applicable calendar year, divided by the average of the closing price of a share of Quaker Common Stock as reported by the composite tape of the New York Stock Exchange for the previous calendar year (the “Threshold Amount”), is required to receive 75% of the annual cash retainer in Quaker common stock and 25% of the retainer in cash, unless the director elects to receive a greater percentage of Quaker common stock, up to 100% of the annual cash retainer for the applicable year. Each director who owns more than the Threshold Amount may elect to receive common stock in payment of a percentage (up to 100%) of the annual cash retainer. The annual retainer is $0.1 million and the retainer payment date is June 1.
Director Retainer Annual Fee	$ 100
Share-based Compensation Expense	$ 4,861	3,724	$ 4,190
Employee Stock Option [Member]
Share Based Compensation [Line Items]
Weighted Average Remaining Life, Nonvested Stock Awards	1 year 3 months 18 days
Restricted Stock [Member]
Share Based Compensation [Line Items]
Unrecognized Share-based Compensation Expense, Nonvested Stock Award	$ 5,500
Weighted Average Remaining Life, Nonvested Stock Awards	1 year 10 months 24 days
GAIP Plan [Member]
Share Based Compensation [Line Items]
Weighted Average Remaining Life, Nonvested Stock Awards	1 year 9 months 18 days
Restricted Stock Units (RSUs) [Member]
Share Based Compensation [Line Items]
Unrecognized Share-based Compensation Expense, Nonvested Stock Award	$ 800
Combination And Other Acquisition-Related [Member]
Share Based Compensation [Line Items]
Share-based Compensation Expense	$ 900	$ 100