Statements of Stockholders’ Equity - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock
Beginning balance (shares) at Dec. 31, 2015		24,403,659
Beginning balance at Dec. 31, 2015	$ 232,737	$ 244	$ 276,948	$ (43,169)	$ (1,286)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	1,155		1,155
Net loss	(414)			(414)
Ending balance (shares) at Mar. 31, 2016		24,403,659
Ending balance at Mar. 31, 2016	$ 233,478	$ 244	$ 278,103	$ (43,583)	$ (1,286)