CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 467,921	$ 554,846
Restricted cash	47,813	45,522
Marketable securities	32,697	34,529
Accounts receivable, net	579,503	392,746
Prepaid insurance	19,657	10,164
Other current assets	53,293	39,461
Income taxes receivable	5,584	0
Total current assets	1,206,468	1,077,268
Property and equipment, net of accumulated depreciation	212,322	216,256
Right-of-use (“ROU”) leased assets	63,673	60,663
Prepaid health insurance	9,000	9,000
Deposits – health insurance	7,900	7,900
Deposits – workers’ compensation	208,236	186,331
Goodwill and other intangible assets, net	12,707	12,707
Deferred income taxes, net	1,653	9,603
Other assets	12,093	4,548
Total assets	1,734,052	1,584,276
Current liabilities:
Accounts payable	4,250	6,203
Payroll taxes and other payroll deductions payable	232,862	377,960
Accrued worksite employee payroll cost	534,890	334,836
Accrued health insurance costs	40,366	32,685
Accrued workers’ compensation costs	51,368	48,186
Accrued corporate payroll and commissions	69,621	44,277
Other accrued liabilities	70,824	60,777
Total current liabilities	1,004,181	904,924
Noncurrent liabilities:
Accrued workers’ compensation costs	191,193	195,239
Long-term debt	369,400	369,400
Operating lease liabilities, net of current	65,979	64,289
Other accrued liabilities, net of current	6,293	6,292
Total noncurrent liabilities	632,865	635,220
Commitments and contingencies
Stockholders’ equity:
Common stock	555	555
Additional paid-in capital	104,587	95,528
Treasury stock, at cost	(645,993)	(626,984)
Retained earnings	637,857	575,033
Total stockholders’ equity	97,006	44,132
Total liabilities and stockholders’ equity	$ 1,734,052	$ 1,584,276