Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 142,271	$ 129,942
Marketable securities	3,308	3,306
Accounts receivable, net of allowance for doubtful accounts of $120 and $120, respectively	41,684	70,758
Other receivables	8,245	5,489
Inventories	8,794	9,200
Prepaid expenses	2,688	3,774
Deferred tax assets	172	0
Total current assets	207,162	222,469
Property and equipment, net of accumulated depreciation	1,265	1,405
Intangible assets, net of accumulated amortization	207,955	230,100
Goodwill	17,995	18,195
Other assets	19,952	17,864
Total assets	454,329	490,033
Current liabilities:
Accounts payable and other accrued liabilities	71,823	84,994
Accrued payroll and benefits	5,777	8,444
Deferred revenue	7,087	9,959
Drug development liability	573	1,141
Acquisition-related contingent obligations	5,243	4,901
Total current liabilities	90,503	109,439
Drug development liability, less current portion	13,916	14,644
Deferred revenue, less current portion	414	0
Acquisition-related contingent obligations, less current portion	2,745	2,441
Deferred tax liability	6,753	6,569
Other long-term liabilities	6,994	6,088
Convertible senior notes	98,866	96,298
Total liabilities	$ 220,191	$ 235,479
Commitments and contingencies
Stockholders’ equity:
Preferred stock
Common stock, $0.001 par value; 175,000,000 shares authorized; 67,245,602 and 65,969,699 shares issued and outstanding at June 30, 2015 and December 31, 2014, respectively	$ 66	$ 66
Additional paid-in capital	545,359	538,553
Accumulated other comprehensive loss	(165)	(850)
Accumulated deficit	(311,245)	(283,338)
Total stockholders’ equity	234,138	254,554
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	454,329	490,033
Series B junior participating preferred stock [Member]
Stockholders’ equity:
Preferred stock	0	0
Series E Convertible Voting Preferred Stock [Member]
Stockholders’ equity:
Preferred stock	$ 123	$ 123