Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
BALANCE (in shares) at Dec. 31, 2013		123,693	11,359,769				(26,998)
BALANCE at Dec. 31, 2013	$ 6,077	$ 111	$ 11	$ 80,690	$ (74,619)	$ (81)	$ (35)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,370				20,370
Conversion of Series A preferred stock (in shares)		(123,693)	123,693
Conversion of Series A preferred stock		$ (111)		111
Exercise of warrants (in shares)			1,407,855
Exercise of warrants	4,948		$ 2	4,946
Repurchase of common stock (in shares)							(382,564)
Repurchase of common stock	(4,661)						$ (4,661)
Shares issued for stock-based compensation awards (in shares)							25,342
Shares issued for stock-based compensation awards	0			(46)	(74)		$ 120
Dividends declared	(476)				(476)
Elimination of CTA upon dissolution	0
Foreign currency translation adjustments	143					143
Unrealized loss on available-for-sale securities	0
Stock-based compensation	49			49
BALANCE (in shares) at Dec. 31, 2014		0	12,891,317				(384,220)
BALANCE at Dec. 31, 2014	26,450	$ 0	$ 13	85,750	(54,799)	62	$ (4,576)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	47,241				47,241
Exercise of warrants (in shares)			88,097
Exercise of warrants	309		$ 0	309
Repurchase of common stock (in shares)							(547,042)
Repurchase of common stock	(16,071)						$ (16,071)
Shares issued for stock-based compensation awards (in shares)							91,060
Shares issued for stock-based compensation awards	666			(182)	(380)		$ 1,228
Dividends declared	(1,709)				(1,709)
Elimination of CTA upon dissolution	(82)					(82)
Foreign currency translation adjustments	(79)					(79)
Unrealized loss on available-for-sale securities	(2)					(2)
Stock-based compensation	86			86
BALANCE (in shares) at Dec. 31, 2015		0	12,979,414				(840,202)
BALANCE at Dec. 31, 2015	$ 56,809	$ 0	$ 13	$ 85,963	$ (9,647)	$ (101)	$ (19,419)