CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 213,763	$ 391,781
Restricted cash	2,679	417
Accounts receivable, net of allowances of $9,047 and $9,239 as of June 30, 2023 and December 31, 2022, respectively	105,171	86,537
Prepaid expenses and other current assets	32,657	23,747
Assets held for sale	0	30,984
Total current assets	354,270	533,466
Operating lease right of use assets (Note 10)	415	1,604
Property and equipment, net (Note 6)	127,307	126,499
Contract acquisition costs	39,465	43,804
Intangible assets, net (Note 5)	71,503	78,103
Goodwill (Note 5)	296,973	296,214
Deferred tax assets	4,840	4,423
Investment in joint venture (Note 17)	880	2,264
Other assets	2,634	2,563
Total assets	898,287	1,088,940
Current liabilities:
Accounts payable	8,307	25,303
Accrued expenses and other current liabilities (Note 7)	109,531	129,244
Deferred revenue (Note 2)	100,416	84,494
Convertible senior notes (Note 8)	72,097	0
Liabilities associated with assets held for sale	0	10,357
Operating lease liabilities (Note 10)	654	2,160
Total current liabilities	291,005	251,558
Deferred revenue, net of current portion (Note 2)	301	174
Convertible senior notes, net of current portion (Note 8)	510,545	737,423
Operating lease liabilities, net of current portion (Note 10)	602	682
Deferred tax liabilities	2,757	2,550
Other liabilities	2,932	28,465
Total liabilities	808,142	1,020,852
Commitments and contingencies (Note 12)
Stockholders’ equity:
Preferred stock, $0.001 par value - 5,000,000 shares authorized, none issued	0	0
Common stock, $0.001 par value - 200,000,000 shares authorized, 80,312,090 and 78,350,984 shares issued, 77,546,017 and 75,584,911 shares outstanding as of June 30, 2023 and December 31, 2022, respectively	80	78
Additional paid-in capital	862,553	771,052
Treasury stock - 2,766,073 shares	(3)	(3)
Accumulated deficit	(763,060)	(692,362)
Accumulated other comprehensive loss	(9,425)	(10,677)
Total stockholders’ equity	90,145	68,088
Total liabilities and stockholders’ equity	$ 898,287	$ 1,088,940