CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 117,705	$ 178,872
Marketable securities	198,017	197,676
Interest receivable	289	349
Accounts receivable	6,002	6,013
Prepaid expenses and other current assets	21,107	15,859
Total current assets	343,120	398,769
Marketable securities, non-current	47,966	88,169
Property and equipment, net	53,499	51,523
Intangible assets	49,529	53,760
Goodwill	36,702	39,702
Operating lease right-of-use assets	68,697	73,181
Other non-current assets	16,113	15,319
Restricted cash	1,500	1,500
Total assets	617,126	721,923
Current liabilities:
Accounts payable	13,076	9,759
Accrued compensation and employee benefits	13,913	20,840
Other accrued liabilities	14,204	11,577
Deferred revenues	78,794	85,711
Total current liabilities	119,987	127,887
Deferred revenues, non-current	129,921	166,776
Long-term portion of lease liabilities	41,530	44,055
Deferred income tax	6,122	6,645
Other non-current liabilities	1,285	1,217
Total liabilities	298,845	346,580
Commitments and contingencies
Stockholders’ equity:
Preferred stock	0	0
Common stock	1,534	1,459
Additional paid-in capital	1,373,324	1,334,138
Accumulated deficit	(1,043,417)	(956,267)
Accumulated other comprehensive loss	(13,160)	(3,987)
Total stockholders’ equity	318,281	375,343
Total liabilities and stockholders’ equity	$ 617,126	$ 721,923