CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 257,914	$ 274,305
Investments	136,186	304,781
Accounts receivable, net	97,762	92,375
Inventories	36,543	37,258
Prepaid and other current assets	11,430	9,839
Total current assets	539,835	718,558
Property, plant and equipment, net	24,833	24,460
Goodwill	639,484	639,484
Intangible assets, net	769,160	1,092,178
Restricted cash	2,653	2,593
Other long-term assets	801	1,153
Total assets	1,976,766	2,478,426
Current liabilities:
Accounts payable	8,511	3,684
Accrued expenses	190,457	156,008
Current portion of long-term debt	0	21,166
Current portion of acquisition-related contingent consideration	99,106	97,068
Deferred revenues	41,623	34,951
Total current liabilities	339,697	312,877
Long-term liabilities:
Long-term debt, net	490,518	785,992
Convertible notes, net	264,899	179,363
Acquisition-related contingent consideration	1,582	50,927
Deferred tax liabilities	55,800	197,066
Deferred revenues	22,312	14,850
Other long-term liabilities	1,651	2,962
Total liabilities	1,176,459	1,544,037
Commitments and contingencies
Stockholders’ equity:
Preferred stock, par value $0.01 per share, 2,000,000 shares authorized; none issued	0	0
Common stock, par value $0.01 per share, 117,500,000 shares authorized; 35,369,141 and 34,336,147 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively	354	343
Additional paid-in capital	1,284,867	1,238,031
Accumulated other comprehensive loss	(3,637)	(3,838)
Accumulated deficit	(481,277)	(300,147)
Total stockholders’ equity	800,307	934,389
Total liabilities and stockholders’ equity	$ 1,976,766	$ 2,478,426