CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 528,392	$ 193,822
Restricted cash	9,015
Accounts receivables, less reserve for doubtful accounts of $525 and $227 at December 31, 2019 and December 31, 2018, respectively	43,068	33,015
Royalties and other receivables	148	136
Unbilled receivables	456	2,602
Inventories, net	54,832	42,263
Prepaid expenses and other current assets	5,917	3,901
Total current assets	641,828	275,739
Property, plant and equipment, net	48,455	32,180
Intangible assets, net	212,552	135,438
Goodwill	468,413	326,735
Deferred tax assets	2,920	4,355
Operating lease right of use assets	25,707
Other assets	238	174
Total assets	1,400,113	774,621
Current liabilities:
Accounts payable	11,425	10,489
Operating lease liability	3,557
Accrued liabilities	33,331	15,865
Convertible senior notes, net		103,488
Total current liabilities	48,313	129,842
Convertible senior notes	232,767
Deferred tax liabilities	29,944	25,086
Operating lease liability, long-term	26,995
Other liabilities, long-term	2,326	4,125
Total liabilities	340,345	159,053
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, $.01 par value, 5,000,000 shares authorized, no shares issued or outstanding
Common stock, $0.01 par value; 80,000,000 shares authorized; 52,078,258 shares at December 31, 2019 and 43,917,378 shares at December 31, 2018 issued and outstanding	521	439
Additional paid-in capital	1,068,431	642,590
Accumulated other comprehensive loss	(15,027)	(11,893)
Accumulated earnings (deficit)	5,843	(15,568)
Total stockholders' equity	1,059,768	615,568
Total liabilities and stockholders' equity	$ 1,400,113	$ 774,621