Consolidated Statement of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Common Stock [Member] Class A common stock	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Deficit)	Noncontrolling Interest [Member]	Total
Stockholders' Equity, Beginning Balance at Dec. 31, 2019	$ 333	$ 157	$ 250,700	$ (20,982)	$ 628	$ 230,836
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share based compensation			836			836
Vesting of restricted units	1	1	(93)			(91)
Issuance of common stock under ESPP, value	1		419			420
Net income (loss)				(9,216)	(16)	(9,232)
Stockholders' Equity, Ending Balance at Mar. 31, 2020	335	158	251,862	(30,198)	612	222,769
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 units	3	1	(919)			(915)
Class A stock issued in conversion	1
Class B stock converted to Class A stock		(1)
Issuance of common stock under ESPP, value	1		537			538
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