Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 33,498	$ 36,396
Marketable securities	28,692	37,940
Accounts receivable, net	25,908	17,270
Inventories, net	12,587	13,441
Prepaid expenses and other current assets	5,261	3,679
Total current assets	105,946	108,726
Long term marketable securities	55,009	19,816
Property and equipment, net	3,874	2,448
Deferred legal fees	22,503	5,209
Intangible assets, net	976	225
Other non-current assets	318	360
Total assets	188,626	136,784
Current liabilities:
Accounts payable	4,314	1,863
Accrued sales deductions	26,794	8,461
Accrued expenses	25,153	17,656
Non-recourse liability related to sale of future royalties, current portion	497
Deferred licensing revenue	176	143
Total current liabilities	56,934	28,123
Deferred licensing revenue, net of current portion	1,390	1,274
Convertible notes, net of discount	7,085	26,223
Non-recourse liability related to sale of future royalties-long term	30,031	30,025
Other non-current liabilities	4,325	3,876
Derivative liabilities	854	6,564
Total liabilities	100,619	96,085
Stockholders' equity:
Common stock, $0.001 par value, 130,000,000 shares authorized December 31, 2015 and 2014; 49,004,674 and 42,974,463 shares issued and outstanding at December 31, 2015 and 2014, respectively	49	43
Additional paid-in capital	263,955	230,263
Accumulated other comprehensive loss	(488)	(154)
Accumulated deficit	(175,509)	(189,453)
Total stockholders' equity	88,007	40,699
Total liabilities and stockholders' equity	$ 188,626	$ 136,784