CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 326,773	$ 354,260
Restricted cash	42,227	41,137
Marketable securities	60,781	1,960
Accounts receivable, net	400,623	333,981
Prepaid insurance	8,411	10,782
Other current assets	27,721	26,991
Income taxes receivable	0	9,824
Total current assets	866,536	778,935
Property and equipment, net	117,213	95,659
Prepaid health insurance	9,000	9,000
Deposits	172,674	159,515
Goodwill and other intangible assets, net	12,726	12,762
Deferred income taxes, net	8,816	4,283
Other assets	4,851	3,541
Total assets	1,191,816	1,063,695
Liabilities and stockholders’ equity
Accounts payable	10,622	6,447
Payroll taxes and other payroll deductions payable	261,166	303,247
Accrued worksite employee payroll cost	329,979	267,402
Accrued health insurance costs	35,153	26,075
Accrued workers’ compensation costs	45,818	42,974
Accrued corporate payroll and commissions	60,704	52,595
Other accrued liabilities	28,890	25,989
Total current liabilities	772,332	724,729
Accrued workers’ compensation costs	187,412	166,493
Long-term debt	144,400	104,400
Other Liabilities, Noncurrent	9,996	1,752
Total noncurrent liabilities	341,808	272,645
Commitments and contingencies
Stockholders’ equity:
Preferred stock, par value $0.01 per share: Shares authorized - 20,000 Shares issued and outstanding - none	0	0
Common stock, par value $0.01 per share: Shares authorized - 60,000 Shares issued - 55,489 at December 31, 2018 and 2017	555	555
Additional paid-in capital	36,752	25,337
Treasury stock, at cost (14,555 and 14,009 shares held in treasury)	(357,569)	(256,363)
Accumulated other comprehensive income, net of tax	(9)	(5)
Retained earnings	397,947	296,797
Total stockholders’ equity	77,676	66,321
Total liabilities and stockholders’ equity	$ 1,191,816	$ 1,063,695