CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 529,525	$ 528,392
Restricted cash	9,041	9,015
Accounts receivable, net of allowances of $658 and $525 at March 31, 2020 and December 31, 2019, respectively	44,726	43,068
Royalties and other receivables	30	148
Unbilled receivables	456	456
Inventories, net	61,781	54,832
Prepaid expenses and other current assets	5,819	5,917
Total current assets	651,378	641,828
Property, plant and equipment, net	50,373	48,455
Intangible assets, net	208,526	212,552
Goodwill	468,382	468,413
Deferred tax assets	2,904	2,920
Operating lease right of use assets	24,688	25,707
Other assets	230	238
Total assets	1,406,481	1,400,113
Current liabilities:
Accounts payable	10,176	11,425
Operating lease liability	3,747	3,557
Accrued liabilities	27,930	33,331
Total current liabilities	41,853	48,313
Convertible senior notes, net	235,458	232,767
Deferred tax liabilities	29,868	29,944
Operating lease liability, long-term	27,038	26,995
Other liabilities, long-term	2,506	2,326
Total liabilities	336,723	340,345
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $0.01 par value; 80,000,000 shares authorized; 52,278,083 shares at March 31, 2020 and 52,078,258 shares at December 31, 2019 issued and outstanding	523	521
Additional paid-in capital	1,074,183	1,068,431
Accumulated other comprehensive loss	(20,606)	(15,027)
Accumulated earnings	15,658	5,843
Total stockholders' equity	1,069,758	1,059,768
Total liabilities and stockholders' equity	$ 1,406,481	$ 1,400,113