CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 113,225	$ 117,709
Short-term investments	3,574	59,711
Accounts receivable, net	78,337	102,056
Receivables from collaborative partners	371	533
Inventories	10,433	13,033
Prepaid and other current assets	13,103	13,162
Total current assets	219,043	306,204
Property and equipment, net	14,532	15,526
Intangible assets, net	850,679	902,149
Other assets	1,346	1,458
Total assets	1,085,600	1,225,337
Current liabilities:
Accounts payable	12,407	14,855
Accrued rebates, returns and discounts	140,006	131,536
Accrued liabilities	53,052	59,398
Income taxes payable		59
Current portion of Senior Notes	57,500
Contingent consideration liability, current portion	1,851	4,578
Interest payable	13,208	15,924
Other current liabilities	917	892
Total current liabilities	278,941	227,242
Contingent consideration liability, long-term portion	5,505	10,247
Senior Notes	311,112	466,051
Convertible Notes	260,938	252,725
Other long-term liabilities	17,708	18,284
Shareholders' equity:
Common stock	306,103	291,634
Additional paid-in capital	75,707	75,917
Accumulated deficit	(170,412)	(116,744)
Accumulated other comprehensive loss, net of tax	(2)	(19)
Total shareholders' equity	211,396	250,788
Total liabilities and shareholders' equity	$ 1,085,600	$ 1,225,337