Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 4,677	$ 4,652
Restricted cash	39,268	23,951
Accounts receivable, net	292,496	216,175
Other current assets	33,310	24,213
Current assets before funds held for clients	369,751	268,991
Funds held for clients	139,420	167,440
Total current assets	509,171	436,431
Non-current assets:
Property and equipment, net	40,069	41,346
Goodwill and other intangible assets, net	807,939	756,750
Assets of deferred compensation plan	142,330	127,332
Operating lease right-of-use assets, net	153,457	147,843
Other non-current assets	3,662	4,052
Total non-current assets	1,147,457	1,077,323
Total assets	1,656,628	1,513,754
Current liabilities:
Accounts payable	99,018	64,119
Income taxes payable	2,397	2,788
Accrued personnel costs	72,917	79,978
Contingent purchase price liabilities	22,407	20,288
Operating lease liabilities	30,880	30,483
Other current liabilities	56,979	13,629
Current liabilities before client fund obligations	284,598	211,285
Client fund obligations	139,166	166,989
Total current liabilities	423,764	378,274
Non-current liabilities:
Bank debt	163,300	108,000
Debt issuance costs	(628)	(808)
Total long-term debt	162,672	107,192
Income taxes payable	1,396	1,775
Deferred income taxes, net	14,399	8,752
Deferred compensation plan obligations	142,330	127,332
Contingent purchase price liabilities	43,780	34,103
Operating lease liabilities	146,087	142,020
Other non-current liabilities	9,868	11,686
Total non-current liabilities	520,532	432,860
Total liabilities	944,296	811,134
STOCKHOLDERS' EQUITY
Common stock	1,349	1,341
Additional paid in capital	757,421	740,970
Retained earnings	616,691	557,875
Treasury stock	(661,772)	(595,297)
Accumulated other comprehensive loss	(1,357)	(2,269)
Total stockholders’ equity	712,332	702,620
Total liabilities and stockholders’ equity	$ 1,656,628	$ 1,513,754