Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	APIC	Treasury Stock	Accumulated deficit	Series C Preferred Stock Preferred Stock	Common Class A Common Stock	Common Class B Common Stock
Beginning balance (in shares) at Dec. 31, 2020					3,441	7,953	220
Beginning balance at Dec. 31, 2020	$ 11,215	$ 200,147	$ (2,662)	$ (193,116)	$ 6,765	$ 79	$ 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of shares withheld for taxes ( in shares)						105
Issuance of common stock, net of shares withheld for taxes	(187)	(189)				$ 2
Stock-based compensation	183	183
Net income (loss)	247			247
Ending balance (in shares) at Mar. 31, 2021					3,441	8,058	220
Ending balance at Mar. 31, 2021	11,458	200,141	(2,662)	(192,869)	$ 6,765	$ 81	$ 2
Beginning balance (in shares) at Dec. 31, 2021					3,441	8,102	220
Beginning balance at Dec. 31, 2021	25,296	200,617	(2,662)	(179,507)	$ 6,765	$ 81	$ 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of shares withheld for taxes ( in shares)						130
Issuance of common stock, net of shares withheld for taxes	(297)	(298)				$ 1
Stock-based compensation	142	142
Net income (loss)	1,747			1,747
Ending balance (in shares) at Mar. 31, 2022					3,441	8,232	220
Ending balance at Mar. 31, 2022	$ 26,888	$ 200,461	$ (2,662)	$ (177,760)	$ 6,765	$ 82	$ 2