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)	(3,923)				(3,923)
Dividend	(363)	$ 198		(363)
Preferred Stock		$ 13,200
Preferred Stock, Shares		4,000
Ending Balance at Jun. 30, 2020	73,235	$ 13,398	$ 555	288,617	(215,456)	$ (481)
Ending balance, shares at Jun. 30, 2020		4,000	54,863			618
Beginning Balance at Mar. 31, 2020	81,770	$ 13,365	$ 555	288,815	(207,119)	$ (481)
Beginning balance, Shares at Mar. 31, 2020		4,000	54,863			618
Net income (loss)	(8,337)				(8,337)
Dividend	(198)	$ 33		(198)
Ending Balance at Jun. 30, 2020	73,235	$ 13,398	$ 555	288,617	(215,456)	$ (481)
Ending balance, shares at Jun. 30, 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)	45,746				45,746
Dividend	(396)			(396)
Repurchased stock	(888)		$ 593			$ (888)
Repurchased stock, Shares			(593)
Ending Balance at Jun. 30, 2021	160,987	$ 13,200	$ 555	287,825	(126,024)	$ (1,369)
Ending balance, shares at Jun. 30, 2021		4,000	54,270			1,211
Beginning Balance at Mar. 31, 2021	141,552	$ 13,200	$ 555	288,023	(146,545)	$ (481)
Beginning balance, Shares at Mar. 31, 2021		4,000	54,863			618
Net income (loss)	20,521				20,521
Dividend	(198)	$ 0		(198)
Repurchased stock	(888)		$ 593			$ (888)
Repurchased stock, Shares			(593)
Ending Balance at Jun. 30, 2021	$ 160,987	$ 13,200	$ 555	$ 287,825	$ (126,024)	$ (1,369)
Ending balance, shares at Jun. 30, 2021		4,000	54,270			1,211