Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 194,659	$ 253,029
Marketable securities	290,143	297,967
Prepaid expenses and other current assets	9,612	7,105
Total current assets	494,414	558,101
Long-term marketable securities	94,764	195,881
Property and equipment, net	67,846	65,464
Operating lease right-of-use assets	98,910	96,320
Restricted cash	10,508	8,819
Intangible asset	59,195	59,195
Goodwill	140,627	140,627
Other non-current assets	4,825	5,000
TOTAL ASSETS	971,089	1,129,407
Current liabilities:
Accounts payable	3,079	2,219
Accrued compensation	17,991	21,131
Accrued expenses and other current liabilities	13,985	10,344
Operating lease liabilities	10,667	9,159
Contingent consideration	51,386	51,382
Success payment liabilities		5,000
Total current liabilities	97,108	99,235
Operating lease liabilities, net of current portion	102,960	101,784
Contingent consideration, net of current portion	97,999	102,361
Success payment liabilities, net of current portion	33,517	97,525
Total liabilities	331,584	400,905
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock, $0.0001 par value; 50,000 shares authorized; zero shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively
Common stock, $0.0001 par value; 750,000 shares authorized; 188,430 and 184,929 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	19	18
Additional paid-in capital	1,535,106	1,515,210
Accumulated other comprehensive loss	(6,347)	(1,366)
Accumulated deficit	(889,273)	(785,360)
Total stockholders' equity	639,505	728,502
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 971,089	$ 1,129,407