CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 212,499	$ 162,855
Marketable securities	138,672	136,593
Accounts receivable, net	103,353	91,460
Inventories	30,674	34,443
Prepaid and other current assets	12,465	11,009
Assets held for sale	77,161	45,508
Total current assets	574,824	481,868
Property and equipment, net	7,340	7,904
Goodwill	422,513	422,513
Intangible assets, net	261,692	375,479
Deferred tax assets	1,151	47,120
Restricted cash	495	495
Other long-term assets	103	266
Assets held for sale, net of current portion	559,300	564,711
Total assets	1,827,418	1,900,356
Current liabilities:
Accounts payable	10,738	7,717
Accrued expenses	194,053	166,732
Current portion of convertible notes, net	20,727	0
Current portion of acquisition-related contingent consideration	210	49,399
Deferred revenues	182	0
Liabilities held for sale	52,962	53,870
Total current liabilities	278,872	277,718
Long-term liabilities:
Long-term debt, net	466,906	466,291
Convertible notes, net	254,902	268,392
Acquisition-related contingent consideration	631	686
Other long-term liabilities	918	1,204
Liabilities held for sale, net of current portion	98,285	95,821
Total liabilities	1,100,514	1,110,112
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; 34,390,068 and 34,083,112 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	344	341
Additional paid-in capital	1,281,858	1,271,628
Accumulated other comprehensive loss	(4,295)	(3,908)
Accumulated deficit	(551,003)	(477,817)
Total stockholders’ equity	726,904	790,244
Total liabilities and stockholders’ equity	$ 1,827,418	$ 1,900,356