Unaudited Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member] Common Stock Class A	Common Stock [Member] Common Stock Class B	Additional Paid in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Stockholders' Equity, Beginning Balance at Dec. 31, 2020	$ 340	$ 157	$ 261,338	$ (2,430)	$ 1,452	$ 260,857
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share based compensation			2,134			2,134
Vesting of restricted stock	3	1	(919)			(915)
Issuance of common stock under ESPP	1		537			538
Conversion of Class B stock to Class A stock	1	(1)
Net income (loss)				2,538	123	2,661
Stockholders' Equity, Ending Balance at Mar. 31, 2021	345	157	263,090	108	1,575	265,275
Stockholders' Equity, Beginning Balance at Dec. 31, 2020	340	157	261,338	(2,430)	1,452	260,857
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)						21,758
Stockholders' Equity, Ending Balance at Jun. 30, 2021	347	156	264,450	19,204	1,576	285,733
Stockholders' Equity, Beginning Balance at Mar. 31, 2021	345	157	263,090	108	1,575	265,275
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share based compensation			1,657			1,657
Vesting of restricted stock	1		(297)			(296)
Conversion of Class B stock to Class A stock	1	(1)
Net income (loss)				19,096	1	19,097
Stockholders' Equity, Ending Balance at Jun. 30, 2021	347	156	264,450	19,204	1,576	285,733
Stockholders' Equity, Beginning Balance at Dec. 31, 2021	348	157	267,621	8,440	1,723	278,289
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share based compensation			1,456			1,456
Vesting of restricted stock	4	1	(413)			(408)
Issuance of common stock under ESPP	1		724			725
Net income (loss)				(8,902)	(71)	(8,973)
Stockholders' Equity, Ending Balance at Mar. 31, 2022	353	158	269,388	(462)	1,652	271,089
Stockholders' Equity, Beginning Balance at Dec. 31, 2021	348	157	267,621	8,440	1,723	278,289
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)						(8,927)
Stockholders' Equity, Ending Balance at Jun. 30, 2022	354	158	270,873	(1,016)	2,252	272,621
Stockholders' Equity, Beginning Balance at Mar. 31, 2022	353	158	269,388	(462)	1,652	271,089
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share based compensation			1,509			1,509
Vesting of restricted stock	1		(24)			(23)
Net income (loss)				(554)	600	46
Stockholders' Equity, Ending Balance at Jun. 30, 2022	$ 354	$ 158	$ 270,873	$ (1,016)	$ 2,252	$ 272,621