Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 6,778	$ 4,652
Restricted cash	27,618	23,951
Accounts receivable, net	270,610	216,175
Other current assets	25,695	24,213
Current assets before funds held for clients	330,701	268,991
Funds held for clients	140,774	167,440
Total current assets	471,475	436,431
Non-current assets:
Property and equipment, net	39,910	41,346
Goodwill and other intangible assets, net	756,684	756,750
Assets of deferred compensation plan	133,478	127,332
Operating lease right-of-use assets, net	146,786	147,843
Other non-current assets	3,510	4,052
Total non-current assets	1,080,368	1,077,323
Total assets	1,551,843	1,513,754
Current liabilities:
Accounts payable	60,216	64,119
Income taxes payable	15,028	2,788
Accrued personnel costs	50,223	79,978
Contingent purchase price liabilities	22,767	20,288
Operating lease liabilities	30,638	30,483
Other current liabilities	14,312	13,629
Current liabilities before client fund obligations	193,184	211,285
Client fund obligations	140,490	166,989
Total current liabilities	333,674	378,274
Non-current liabilities:
Bank debt	162,000	108,000
Debt issuance costs	(718)	(808)
Total long-term debt	161,282	107,192
Income taxes payable	1,339	1,775
Deferred income taxes, net	12,371	8,752
Deferred compensation plan obligations	133,478	127,332
Contingent purchase price liabilities	31,463	34,103
Operating lease liabilities	140,150	142,020
Other non-current liabilities	10,303	11,686
Total non-current liabilities	490,386	432,860
Total liabilities	824,060	811,134
STOCKHOLDERS' EQUITY
Common stock	1,346	1,341
Additional paid in capital	749,207	740,970
Retained earnings	608,084	557,875
Treasury stock	(629,439)	(595,297)
Accumulated other comprehensive loss	(1,415)	(2,269)
Total stockholders’ equity	727,783	702,620
Total liabilities and stockholders’ equity	$ 1,551,843	$ 1,513,754