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, 2018	$ 329	$ 155	$ 251,742	$ (17,335)	$ 3,496	$ 238,387
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share based compensation			3,846			3,846
Vesting of restricted units	3	2	(49)			(44)
Issuance of common stock under ESPP, value	1		348			349
Purchase of noncontrolling interest			(5,187)		(3,472)	(8,659)
Net income (loss)				(3,647)	604	(3,043)
Stockholders' Equity, Ending Balance at Dec. 31, 2019	333	157	250,700	(20,982)	628	230,836
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share based compensation			4,395			4,395
Vesting of restricted units	4	1	(140)			(135)
Class B stock converted to Class A stock	1	(1)
Issuance of common stock under ESPP, value	2		849			851
Issuance of subsidiary shares in business combination			5,534		1,744	7,278
Net income (loss)				18,552	(920)	17,632
Stockholders' Equity, Ending 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			6,244			6,244
Vesting of restricted units	5	1	(1,243)			(1,237)
Class B stock converted to Class A stock	1	(1)
Issuance of common stock under ESPP, value	2		1,282			1,284
Net income (loss)				10,870	271	11,141
Stockholders' Equity, Ending Balance at Dec. 31, 2021	$ 348	$ 157	$ 267,621	$ 8,440	$ 1,723	$ 278,289