Condensed Consolidated Statements of Changes in Stockholders' Deficit (Unaudited) - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Preferred Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2018				$ 11,377		$ (11,355)	$ 22	$ 9,723	$ 12,115	$ 453,868	$ 812,704	$ (1,251,388)	$ (46,483)	$ (19,184)
Stock-based compensation										151				151
Treasury stock issued										(1,968)		1,984		16
Net income (loss)											(13,527)			(13,527)
Other comprehensive income													522	522
Other comprehensive income													(10,833)	(10,833)
Balance at Mar. 31, 2019								9,723	12,115	452,051	810,554	(1,249,404)	(57,316)	(32,000)
Balance at Dec. 31, 2019								9,723	12,121	447,022	797,817	(1,243,509)	(63,134)	(49,683)
Stock-based compensation										223				223
Treasury stock issued										(29,667)		29,667
Net income (loss)											5,118			5,118
Other comprehensive income													51	51
Balance at Mar. 31, 2020								$ 9,723	$ 12,121	$ 417,578	$ 802,935	$ (1,213,842)	$ (63,083)	$ (44,291)