CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 77,900	$ 36,667
Accounts receivable, net of allowance	443,338	428,536
Prepaid expenses and income taxes	10,646	18,592
Workers' compensation receivable	15,338	12,702
Other current assets	5,049	3,026
Total current assets	552,271	499,523
Property and equipment, net	57,067	57,996
Goodwill	894,888	894,095
Identifiable intangible assets, net	345,370	352,766
Other non-current assets	8,563	5,749
Total assets	1,858,159	1,810,129
Current liabilities:
Accounts payable	14,467	6,870
Accrued payroll and contract professional pay	120,356	114,832
Workers’ compensation loss reserves	17,479	14,777
Income taxes payable	777	1,229
Other current liabilities	29,669	29,009
Total current liabilities	182,748	166,717
Long-term debt	565,929	575,213
Deferred income tax liabilities	69,439	69,436
Other long-term liabilities	9,827	7,372
Total liabilities	827,943	818,738
Commitments and contingencies (Note 6)
Stockholders’ equity:
Preferred Stock, Value, $0.01 par value	0	0
Common stock, $0.01 par value	523	521
Paid-in capital	574,346	566,090
Retained earnings	457,511	428,419
Accumulated other comprehensive loss	(2,164)	(3,639)
Total stockholders’ equity	1,030,216	991,391
Total liabilities and stockholders’ equity	$ 1,858,159	$ 1,810,129