Condensed Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2014		37,601,474
Beginning Balance at Dec. 31, 2014	$ 300,780	$ 38	$ 315,963	$ (15,221)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(45,782)			(45,782)
Warrant exercise, net(in shares)		1,502,456
Warrant exercise, net	$ 4,550	$ 2	4,548
Option exercise, net (in shares)	21,770	21,770
Option exercise, net	$ 73	$ 0	73
Restricted stock issuances (in shares)		467,265
Restricted stock issuances	3,202		3,202
Restricted stock forfeitures (in shares)		(27,125)
Restricted stock forfeitures	(127)		(127)
Equity issued as part of an acquisition (in shares)		242,250
Equity issued as part of an acquisition	1,858		1,858
Equity canceled related to a previous acquisition (in shares)		(23,925)
Equity canceled related to a previous acquisition	(240)		(240)
Stock based compensation	1,314		1,314
Ending Balance (in shares) at Sep. 30, 2015		39,784,165
Ending Balance at Sep. 30, 2015	$ 265,628	$ 40	$ 326,591	$ (61,003)