CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 192,114	$ 274,305
Marketable securities	136,593	304,781
Accounts receivable, net	103,501	92,375
Inventories	37,356	37,258
Prepaid and other current assets	12,304	9,839
Total current assets	481,868	718,558
Property, plant and equipment, net	25,996	24,460
Goodwill	639,484	639,484
Intangible assets, net	704,470	1,092,178
Restricted cash	656	2,593
Other long-term assets	762	1,153
Total assets	1,853,236	2,478,426
Current liabilities:
Accounts payable	10,335	3,684
Accrued expenses	175,490	156,008
Current portion of long-term debt	0	21,166
Current portion of acquisition-related contingent consideration	49,399	97,068
Deferred revenues	42,494	34,951
Total current liabilities	277,718	312,877
Long-term liabilities:
Long-term debt, net	466,291	785,992
Convertible notes, net	268,392	179,363
Acquisition-related contingent consideration	686	50,927
Deferred tax liabilities	23,927	197,066
Deferred revenues	24,387	14,850
Other long-term liabilities	1,591	2,962
Total liabilities	1,062,992	1,544,037
Commitments and Contingencies (Note O)
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; 34,083,112 and 34,336,147 shares issued and outstanding at December 31, 2017 and December 31, 2016, respectively	341	343
Additional paid-in capital	1,271,628	1,238,031
Accumulated other comprehensive loss	(3,908)	(3,838)
Accumulated deficit	(477,817)	(300,147)
Total stockholders’ equity	790,244	934,389
Total liabilities and stockholders’ equity	$ 1,853,236	$ 2,478,426