Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 165,176	$ 181,833
Accounts receivable, net	430,676	372,974
Inventories, net	264,531	187,764
Prepaid expenses and other current assets	59,871	50,156
Total current assets	920,254	792,727
Property, plant and equipment, net	197,520	203,883
Right of use lease assets	36,635	38,507
Goodwill	631,194	631,212
Other intangible assets, net	1,027,782	1,081,358
Investments in associated companies	95,278	95,785
Non-current deferred tax assets	16,138	16,566
Other non-current assets	30,959	31,796
Total assets	2,955,760	2,891,834
Current liabilities
Short-term borrowings and current portion of long-term debt	56,935	38,967
Accounts payable	226,656	191,821
Dividends payable	7,427	7,051
Accrued compensation	38,197	43,300
Accrued restructuring	4,087	8,248
Accrued pension and postretirement benefits	1,548	1,466
Other accrued liabilities	95,617	92,107
Total current liabilities	430,467	382,960
Long-term debt	836,412	849,068
Long-term lease liabilities	26,335	27,070
Deferred tax liabilities	179,025	192,763
Non-current accrued pension and post-retirement benefits	45,984	63,890
Other non-current liabilities	49,615	55,169
Total liabilities	1,567,838	1,570,920
Commitments and contingencies (Note 26)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, $1 par value; authorized 30,000,000 shares; issued and outstanding 2021 - 17,897,033 shares; 2020 -17,850,616 shares	17,897	17,851
Capital in excess of par value	917,053	905,171
Retained earnings	516,334	423,940
Accumulated other comprehensive loss	(63,990)	(26,598)
Total Quaker shareholders' equity	1,387,294	1,320,364
Noncontrolling interest	628	550
Total equity	1,387,922	1,320,914
Total liabilities and equity	$ 2,955,760	$ 2,891,834