Condensed Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2015		39,940,667
Beginning Balance at Dec. 31, 2015	$ 251,825	$ 40	$ 327,045	$ (75,260)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(22,518)			(22,518)
Warrant exercise, net(in shares)		820,648
Warrant exercise, net	$ 1,920	$ 1	1,919
Option exercise, net (in shares)	60,050	60,050
Option exercise, net	$ 385	$ 0	385
Restricted stock issuances (in shares)		184,125
Restricted stock issuances	2,570		2,570
Restricted stock forfeitures (in shares)		(159,193)
Restricted stock forfeitures	(1,125)		(1,125)
Equity issued as part of an acquisition (in shares)		129,530
Equity issued related to Milestone earnout	1,130		1,130
Stock based compensation	727		727
Ending Balance (in shares) at Sep. 30, 2016		40,975,827
Ending Balance at Sep. 30, 2016	$ 234,914	$ 41	$ 332,651	$ (97,778)