CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2014	$ 362,589
Stock-based compensation for services	16,058		$ 16,058
Stock option exercise	$ 1,635	$ 1	1,634
Stock option exercise, shares	290,695	1,090,936
Issuance of common stock, net	$ 26,664	$ 1	26,663
Issuance of common stock, net, shares		522,750
Issuance of common stock related to acquisition	4,209		4,209
Issuance of common stock related to acquisition, shares		66,121
Common stock warrants exercised, shares		10,606
Employee stock purchase plan	361		361
Employee stock purchase plan shares issued, shares		23,655
Accumulated other comprehensive income	637				$ 637
Net loss	(35,979)			$ (35,979)
Balance at Jun. 30, 2015	$ 376,174	$ 44	$ 469,773	$ (93,983)	$ 340
Balance, shares at Jun. 30, 2015		43,569,372