CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 260,119	$ 274,305
Investments	139,095	304,781
Accounts receivable, net	89,462	92,375
Inventories	37,476	37,258
Prepaid and other current assets	11,138	9,839
Total current assets	537,290	718,558
Property, plant and equipment, net	22,283	24,460
Goodwill	639,484	639,484
Intangible assets, net	1,116,047	1,092,178
Restricted cash	2,653	2,593
Other long-term assets	897	1,153
Total assets	2,318,654	2,478,426
Current liabilities:
Accounts payable	8,154	3,684
Accrued expenses	210,853	156,008
Current portion of long-term debt	0	21,166
Current portion of acquisition-related contingent consideration	98,646	97,068
Deferred revenues	37,489	34,951
Total current liabilities	355,142	312,877
Long-term liabilities:
Long-term debt, net	490,210	785,992
Convertible notes, net	279,546	179,363
Acquisition-related contingent consideration	52,017	50,927
Deferred tax liabilities	172,800	197,066
Deferred revenues	19,692	14,850
Other long-term liabilities	1,799	2,962
Total liabilities	1,371,206	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; 35,273,382 and 34,336,147 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	353	343
Additional paid-in capital	1,279,943	1,238,031
Accumulated other comprehensive loss	(3,633)	(3,838)
Accumulated deficit	(329,215)	(300,147)
Total stockholders’ equity	947,448	934,389
Total liabilities and stockholders’ equity	$ 2,318,654	$ 2,478,426