Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,749	$ 4,652
Restricted cash	37,320	23,951
Accounts receivable, net	293,890	216,175
Other current assets	25,694	24,213
Current assets before funds held for clients	359,653	268,991
Funds held for clients	175,451	167,440
Total current assets	535,104	436,431
Non-current assets:
Property and equipment, net	42,531	41,346
Goodwill and other intangible assets, net	843,246	756,750
Assets of deferred compensation plan	136,059	127,332
Operating lease right-of-use assets, net	152,131	147,843
Other non-current assets	3,697	4,052
Total non-current assets	1,177,664	1,077,323
Total assets	1,712,768	1,513,754
Current liabilities:
Accounts payable	75,607	64,119
Income taxes payable	7,971	2,788
Accrued personnel costs	96,924	79,978
Contingent purchase price liabilities	32,747	20,288
Operating lease liabilities	31,449	30,483
Other current liabilities	21,769	13,629
Current liabilities before client fund obligations	266,467	211,285
Client fund obligations	175,364	166,989
Total current liabilities	441,831	378,274
Non-current liabilities:
Bank debt	190,200	108,000
Debt issuance costs	(538)	(808)
Total long-term debt	189,662	107,192
Income taxes payable	1,836	1,775
Deferred income taxes, net	16,226	8,752
Deferred compensation plan obligations	136,059	127,332
Contingent purchase price liabilities	51,881	34,103
Operating lease liabilities	145,229	142,020
Other non-current liabilities	9,397	11,686
Total non-current liabilities	550,290	432,860
Total liabilities	992,121	811,134
STOCKHOLDERS' EQUITY
Common stock	1,351	1,341
Additional paid in capital	765,329	740,970
Retained earnings	638,382	557,875
Treasury stock	(683,217)	(595,297)
Accumulated other comprehensive loss	(1,198)	(2,269)
Total stockholders’ equity	720,647	702,620
Total liabilities and stockholders’ equity	$ 1,712,768	$ 1,513,754