Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 158,222	$ 139,741
Marketable securities	247	245
Accounts receivable, net of allowance for doubtful accounts of $88 and $120, respectively	39,782	30,384
Other receivables	5,754	12,572
Inventories	8,715	4,176
Prepaid expenses and other assets	3,930	3,507
Total current assets	216,650	190,625
Property and equipment, net of accumulated depreciation	449	918
Intangible assets, net of accumulated amortization and impairment charges	164,234	190,335
Goodwill	17,886	17,960
Other assets	29,549	19,211
Total assets	428,768	419,049
Current liabilities:
Accounts payable and other accrued liabilities	52,483	56,539
Accrued payroll and benefits	8,981	8,188
Deferred revenue	3,188	6,130
Drug development liability	861	259
Acquisition-related contingent obligations	0	5,227
Total current liabilities	65,513	76,343
Drug development liability, less current portion	12,269	14,427
Deferred revenue, less current portion	323	383
Acquisition-related contingent obligations, less current portion	1,315	1,439
Deferred tax liabilities	6,675	6,779
Other long-term liabilities	9,604	7,444
Convertible senior notes	97,043	99,377
Total liabilities	192,742	206,192
Commitments and contingencies
Stockholders’ equity:
Preferred stock	0	0
Common stock, $0.001 par value; 175,000,000 shares authorized; 80,466,735 and 68,228,935 issued and outstanding at December 31, 2016 and 2015, respectively	80	68
Additional paid-in capital	640,166	552,108
Accumulated other comprehensive loss	(1,579)	(5,319)
Accumulated deficit	(402,641)	(334,123)
Total stockholders’ equity	236,026	212,857
Total liabilities and stockholders’ equity	428,768	419,049
Series B Preferred Stock [Member]
Stockholders’ equity:
Preferred stock	0	0
Series E Convertible Voting Preferred Stock [Member]
Stockholders’ equity:
Preferred stock	$ 0	$ 123