UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 109,275	$ 159,965
Marketable securities	187,613	202,814
Total cash, cash equivalents, and marketable securities	296,888	362,779
Accounts receivable	171,556	182,717
Unbilled receivables	201,130	226,714
Other current assets	70,633	68,008
Total current assets	740,207	840,218
Unbilled receivables	115,901	129,789
Goodwill	81,717	81,923
Other long-term assets	320,557	541,601
Total assets	1,258,382	1,593,531
Current liabilities:
Accounts payable	21,465	15,281
Accrued expenses	63,120	63,890
Accrued compensation and related expenses	73,945	120,946
Deferred revenue	269,121	275,844
Other current liabilities	7,800	9,443
Total current liabilities	435,451	485,404
Convertible senior notes, net	592,161	590,722
Operating lease liabilities	84,170	87,818
Other long-term liabilities	12,821	13,499
Total liabilities	1,124,603	1,177,443
Commitments and contingencies (Note 14)
Stockholders’ equity:
Preferred stock, 1,000 shares authorized; none issued	0	0
Common stock, 200,000 shares authorized; 81,940 and 81,712 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	819	817
Additional paid-in capital	170,251	145,810
(Accumulated deficit) retained earnings	(15,140)	276,449
Accumulated other comprehensive (loss)	(22,151)	(6,988)
Total stockholders’ equity	133,779	416,088
Total liabilities and stockholders’ equity	$ 1,258,382	$ 1,593,531