CONDENSED CONSOLIDATED STATEMENTS OF EQUITY UNAUDITED - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Deficit) [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2015	$ 33	$ 345	$ (34,224)	$ 9,115	$ (251,596)	$ (276,327)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	53,568	0	0	53,568
Net unrealized loss on securities available for sale, net of income tax expense	0	0	0	(85)	0	(85)
Amounts reclassified from accumulated other comprehensive income, net of income tax expense	0	0	0	(98)	0	(98)
Foreign currency translation	0	0	0	(93)	0	(93)
Dividends declared	0	0	(1,189)	0	0	(1,189)
Stock based compensation expense	0	2,072	0	0	0	2,072
Purchase of treasury stock	0	0	0	0	(1,331)	(1,331)
Balance at Jun. 30, 2016	33	2,417	18,155	8,839	(252,927)	(223,483)
Balance at Dec. 31, 2016	33	3,903	80,515	11,271	(262,369)	(166,647)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	47,714	0	0	47,714
Net unrealized loss on securities available for sale, net of income tax expense	0	0	0	(1,281)	0	(1,281)
Amounts reclassified from accumulated other comprehensive income, net of income tax expense	0	0	0	(21)	0	(21)
Foreign currency translation	0	0	0	47	0	47
Dividends declared	0	0	(1,171)	0	0	(1,171)
Stock based compensation expense	0	5,078	0	0	0	5,078
Purchase of treasury stock	0	0	0	0	(4,757)	(4,757)
Balance at Jun. 30, 2017	$ 33	$ 8,981	$ 127,058	$ 10,016	$ (267,126)	$ (121,038)