Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Mezzanine Equity Series C Convertible Redeemable Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Repurchased Stock [Member]
Beginning Balance at Dec. 31, 2019	$ 77,521		$ 555	$ 288,980	$ (211,533)	$ (481)
Beginning balance, Shares at Dec. 31, 2019			54,863			618
Net income (loss)	4,414				4,414
Dividend	(165)	$ 165		(165)
Preferred Stock		$ 13,200
Preferred Stock, Shares		4,000
Ending Balance at Mar. 31, 2020	81,770	$ 13,365	$ 555	288,815	(207,119)	$ (481)
Ending balance, shares at Mar. 31, 2020		4,000	54,863			618
Beginning Balance at Dec. 31, 2020	116,525	$ 13,200	$ 555	288,221	(171,770)	$ (481)
Beginning balance, Shares at Dec. 31, 2020		4,000	54,863			618
Net income (loss)	25,225				25,225
Dividend	(198)			(198)
Ending Balance at Mar. 31, 2021	$ 141,552	$ 13,200	$ 555	$ 288,023	$ (146,545)	$ (481)
Ending balance, shares at Mar. 31, 2021		4,000	54,863			618