Consolidated Statements of Stockholders' Equity (Deficit) - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Deficit [Member]
Balance at December 31, 2015 at Dec. 31, 2015	$ 195,774	$ 288	$ 276,610	$ (771)	$ (80,353)
Balance at December 31, 2015 at Dec. 31, 2015	28,814,142
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	$ 4,716		4,716
Exercise of stock options and restricted stock vested	$ 43	1	42
Exercise of stock options and restricted stock vested	46,783
Net (loss) income	$ (23,720)				(23,720)
Balance at March 31, 2016 at Mar. 31, 2016	$ 176,813	$ 289	$ 281,368	$ (771)	$ (104,073)
Balance at March 31, 2016 at Mar. 31, 2016	28,860,925