Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock Common Class A	Common Stock Common Class B	Additional Paid-in Capital	Treasury Stock Common Class A	Retained Earnings	Accumulated Other Comprehensive Loss	Non-controlling Interest	Total
Balance at the beginning of the period at Dec. 31, 2020	$ 3	$ 2	$ 279,800	$ (61,453)	$ 14,840	$ (2,187)	$ 481	$ 231,486
Balance at the beginning of the period (in shares) at Dec. 31, 2020	25,458	19,720
Condensed Consolidated Statements of Changes in Stockholders' Equity
Net income (loss)					33,358		23	33,381
Vesting of restricted stock	$ 0			(10)				(10)
Vesting of restricted stock (in shares)	3
Repurchases of Class A Common Stock				(1,321)				(1,321)
Stock-based compensation			1,305					1,305
Issuance of Class A Common Stock	$ 0		2,778	(1,077)				1,701
Issuance of Class A Common Stock (in shares)	238
Exercise of stock options	$ 0		0	(43)				(43)
Exercise of stock options (in shares)	13
Other comprehensive loss, net of tax						344		344
Balance at the end of the period at Mar. 31, 2021	$ 3	$ 2	283,883	(63,904)	48,198	(1,843)	$ 504	266,843
Balance at the end of the period (in shares) at Mar. 31, 2021	25,712	19,720
Balance at the beginning of the period at Dec. 31, 2021	$ 3	$ 2	288,703	(64,780)	26,352	(732)		249,548
Balance at the beginning of the period (in shares) at Dec. 31, 2021	26,000	19,720
Condensed Consolidated Statements of Changes in Stockholders' Equity
Net income (loss)					(13,228)			(13,228)
Vesting of restricted stock	$ 0			(51)				(51)
Vesting of restricted stock (in shares)	80
Stock-based compensation			1,374					1,374
Other comprehensive loss, net of tax						337		337
Balance at the end of the period at Mar. 31, 2022	$ 3	$ 2	$ 290,077	$ (64,831)	$ 13,124	$ (395)		$ 237,980
Balance at the end of the period (in shares) at Mar. 31, 2022	26,080	19,720