Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 106,436	$ 151,389
Marketable securities	254,848	240,436
Accounts receivable	27,328	32,541
Prepaid expenses and other current assets	26,492	18,032
Total current assets	415,104	442,398
Property and equipment, net	46,130	37,747
Operating lease assets	39,007	36,640
Restricted cash	6,685	6,183
Intangible assets, net	187,060	125,175
Goodwill	211,225	126,777
Other assets	7,961	6,681
Total assets	913,172	781,601
Current liabilities:
Accounts payable	15,589	10,321
Accrued liabilities	77,986	64,814
Operating lease obligations	6,628	4,870
Finance lease obligations	1,237	1,855
Total current liabilities	101,440	81,860
Operating lease obligations, net of current portion	42,363	42,191
Finance lease obligations, net of current portion	1,834	1,155
Convertible senior notes, net	279,870	268,755
Deferred tax liability	10,250	0
Other long-term liabilities	60,864	8,000
Total liabilities	496,621	401,961
Commitments and contingencies (Note 8)
Stockholders’ equity:
Common stock	13	10
Accumulated other comprehensive income (loss)	199	(9)
Additional paid-in capital	1,542,848	1,138,316
Accumulated deficit	(1,126,509)	(758,677)
Total stockholders’ equity	416,551	379,640
Total liabilities and stockholders’ equity	$ 913,172	$ 781,601