CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 62,510	$ 166,068
Marketable securities, current	419,905	361,795
Accounts receivable, net of allowance for credit losses of $3,696 and $3,311 as of June 30, 2022 and December 31, 2021, respectively	68,218	64,625
Prepaid expenses and other current assets	29,037	32,160
Total current assets	579,670	624,648
Property and equipment, net	173,950	166,961
Operating lease right-of-use assets, net	69,861	69,631
Goodwill	670,186	636,805
Intangible assets, net	93,978	102,596
Marketable securities, non-current	284,951	528,911
Other assets	60,199	29,468
Total assets	1,932,795	2,159,020
Current liabilities:
Accounts payable	10,011	9,257
Accrued expenses	49,943	36,112
Finance lease liabilities, current	28,088	21,125
Operating lease liabilities, current	19,243	20,271
Other current liabilities	33,705	45,107
Total current liabilities	140,990	131,872
Long-term debt	703,375	933,205
Finance lease liabilities, noncurrent	26,479	22,293
Operating lease liabilities, noncurrent	60,657	55,114
Other long-term liabilities	7,556	2,583
Total liabilities	939,057	1,145,067
Commitments and contingencies (Note 10)
Stockholders’ equity:
Class A common stock	2	2
Additional paid-in capital	1,597,869	1,527,468
Accumulated other comprehensive loss	(12,542)	(2,627)
Accumulated deficit	(591,591)	(510,890)
Total stockholders’ equity	993,738	1,013,953
Total liabilities and stockholders’ equity	$ 1,932,795	$ 2,159,020