Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands		Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock Common Stock Class A		Common Stock Common Stock Class B	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings, Appropriated	AOCI Attributable to Parent	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2021	[1]			53,608,929		5,087,814
Beginning balance at Dec. 31, 2021		$ 811,665		$ 5		$ 1	$ 595,045	$ 63,732		$ 8,312	$ 9,109	$ 135,461
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(7,443)						(5,786)				(1,657)
Foreign currency translation adjustment		2,454									1,870	584
Exercise of stock options (in shares)				425,349	[1]	1,002
Exercise of stock options		724					724
Stock-based compensation		1,374					1,374
Conversion of class B common stock to Class A common stock (in shares)	[1]			1,002		(1,002)
Conversion of Class B common stock to Class A common stock		0
Ending balance (in shares) at Mar. 31, 2022	[1]			54,035,280		5,086,812
Ending balance at Mar. 31, 2022		808,774		$ 5		$ 1	597,143	57,946		8,312	10,979	134,388
Beginning balance (in shares) at Dec. 31, 2022	[1]			54,655,286		5,021,811
Beginning balance at Dec. 31, 2022		812,171
Beginning balance at Dec. 31, 2022		813,779	$ (1,769)	$ 5		$ 1	604,089	96,034	$ (1,769)	16,881	(40,546)	137,315
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		8,963						7,145				1,818
Foreign currency translation adjustment		9,423									7,778	1,645
Exercise of stock options (in shares)	[1]			163,069
Exercise of stock options		241					241
Stock-based compensation		2,068					2,068
Ending balance (in shares) at Mar. 31, 2023	[1]			54,818,355		5,021,811
Ending balance at Mar. 31, 2023		832,705
Ending balance at Mar. 31, 2023		$ 832,705		$ 5		$ 1	$ 606,398	$ 101,410		$ 16,881	$ (32,768)	$ 140,778

[1] Prior period results reflect the three-for-one stock split effected in the form of a stock dividend in March 2022. See Note 1 for details