CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 455,387	$ 554,846
Restricted cash	46,128	45,522
Marketable securities	34,597	34,529
Accounts receivable, net	595,836	392,746
Prepaid insurance	17,143	10,164
Other current assets	47,070	39,461
Income taxes receivable	5,128	0
Total current assets	1,201,289	1,077,268
Property and equipment, net of accumulated depreciation	219,611	216,256
Right-of-use (“ROU”) leased assets	66,463	60,663
Prepaid health insurance	9,000	9,000
Deposits – health insurance	7,900	7,900
Deposits – workers’ compensation	203,612	186,331
Goodwill and other intangible assets, net	12,707	12,707
Deferred income taxes, net	442	9,603
Other assets	7,060	4,548
Total assets	1,728,084	1,584,276
Current liabilities:
Accounts payable	4,063	6,203
Payroll taxes and other payroll deductions payable	262,975	377,960
Accrued worksite employee payroll cost	529,881	334,836
Accrued health insurance costs	29,064	32,685
Accrued workers’ compensation costs	49,845	48,186
Accrued corporate payroll and commissions	63,901	44,277
Other accrued liabilities	62,960	60,777
Total current liabilities	1,002,689	904,924
Noncurrent liabilities:
Accrued workers’ compensation costs	192,703	195,239
Long-term debt	369,400	369,400
Operating lease liabilities, net of current	69,736	64,289
Other accrued liabilities, net of current	6,294	6,292
Total noncurrent liabilities	638,133	635,220
Commitments and contingencies
Stockholders’ equity:
Common stock	555	555
Additional paid-in capital	94,396	95,528
Treasury stock, at cost	(635,627)	(626,984)
Retained earnings	627,938	575,033
Total stockholders’ equity	87,262	44,132
Total liabilities and stockholders’ equity	$ 1,728,084	$ 1,584,276