CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 175,611	$ 173,759
Accounts receivable, less reserve for doubtful accounts of $61 at June 30, 2018 and $58 at December 31, 2017, respectively	31,713	27,585
Royalties and other receivables	17	153
Inventories, net	40,948	39,004
Prepaid expenses and other current assets	4,620	2,281
Total current assets	252,909	242,782
Property, plant and equipment, net	23,993	22,417
Intangible assets, net	139,182	144,753
Goodwill	327,095	327,333
Other assets	1,902	6,234
Total assets	745,081	743,519
Current liabilities:
Accounts payable	6,688	7,282
Accrued liabilities	13,102	17,929
Convertible senior notes, current portion	101,329
Total current liabilities	121,119	25,211
Convertible senior notes, net		99,250
Deferred tax liabilities	20,643	25,167
Other long-term liabilities	4,660	2,343
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock, $.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $.01 par value, 80,000,000 shares authorized, 43,798,572 shares at June 30, 2018 and 43,587,079 shares at December 31, 2017 issued and outstanding	438	436
Additional paid-in capital	635,364	628,983
Accumulated other comprehensive loss	(11,143)	(6,363)
Accumulated deficit	(26,000)	(31,508)
Total stockholders' equity	598,659	591,548
Total liabilities and stockholders' equity	$ 745,081	$ 743,519