Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 371,325	$ 294,025
Accounts receivable	19,997	16,442
Prepaid expenses	50,809	37,613
Inventory	1,807	1,383
Income tax receivable		18,391
Deferred contract costs	124,397	118,206
Current assets before funds held for clients	568,335	486,060
Funds held for clients	2,727,991	2,327,366
Total current assets	3,296,326	2,813,426
Property and equipment, net	520,182	498,197
Intangible assets, net	49,136	50,112
Goodwill	51,889	51,889
Long-term deferred contract costs	712,935	680,272
Other assets	102,796	103,643
Total assets	4,733,264	4,197,539
Current liabilities:
Accounts payable	20,969	13,875
Income tax payable	17,282
Accrued commissions and bonuses	20,091	30,492
Accrued payroll and vacation	42,497	56,086
Deferred revenue	27,604	22,812
Accrued expenses and other current liabilities	85,438	83,302
Current liabilities before client funds obligation	213,881	206,567
Client funds obligation	2,728,431	2,328,076
Total current liabilities	2,942,312	2,534,643
Deferred income tax liabilities, net	133,454	143,750
Long-term deferred revenue	109,435	107,657
Other long-term liabilities	110,000	108,453
Total long-term liabilities	352,889	359,860
Total liabilities	3,295,201	2,894,503
Commitments and contingencies (Note 12)
Stockholders’ equity:
Common stock, $0.01 par value (100,000 shares authorized, 62,719 and 62,675 shares issued at March 31, 2024 and December 31, 2023, respectively; 56,557 and 56,528 shares outstanding at March 31, 2024 and December 31, 2023, respectively)	627	627
Additional paid-in capital	634,818	724,493
Retained earnings	1,697,191	1,469,981
Accumulated other comprehensive earnings (loss)	(495)	(1,039)
Treasury stock, at cost (6,162 and 6,147 shares at March 31, 2024 and December 31, 2023, respectively)	(894,078)	(891,026)
Total stockholders’ equity	1,438,063	1,303,036
Total liabilities and stockholders’ equity	$ 4,733,264	$ 4,197,539