Income Taxes - Components of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components of Income (loss) before income taxes
Domestic	$ 1,270	$ (26,460)	$ (72,293)
Foreign	(4,774)	4,870	(6,360)
Loss before income taxes	(3,504)	(21,590)	(78,653)
Currently payable:
Federal	1,090	377	(296)
State and local	26	4	37
Foreign	2,989	1,744	4,747
Total currently payable	4,105	2,125	4,488
Deferred:
Federal	(1,629)	27,705	(23,358)
State and local	(195)	305	(571)
Foreign	297	1,241	(5,059)
Total deferred	(1,527)	29,251	(28,988)
Provision (benefit) for income taxes	2,578	31,376	(24,500)
Reconciliation of income tax expense to the U.S. Federal statutory income tax rate to actual tax provision
Tax at statutory rate	(736)	(4,534)	(16,517)
State income taxes, net of federal tax benefit	(128)	364	(531)
Effect of foreign items	88	1,502	1,004
Valuation allowance and unbenefited losses	4,280	33,478	(10,654)
Deferred tax rate changes	(755)	71	281
Transaction costs	(1,070)	(131)	671
Tax incentives	(226)	(311)	(56)
Disallowed foreign exchange loss	228	1,746	573
Nondeductible goodwill impairment	1,340	0	0
Other	(443)	(809)	729
Provision (benefit) for income taxes	$ 2,578	$ 31,376	$ (24,500)