CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 41,826	$ 36,667
Accounts receivable, net	613,825	428,536
Prepaid expenses and income taxes	11,446	18,592
Workers' compensation receivable	15,011	12,702
Other current assets	4,264	3,026
Total current assets	686,372	499,523
Property and equipment, net	79,123	57,996
Identifiable intangible assets, net	488,691	352,766
Goodwill	1,421,076	894,095
Other non-current assets	12,589	5,749
Total assets	2,687,851	1,810,129
Current liabilities:
Accounts payable	43,125	6,870
Accrued payroll and contract professional pay	194,807	114,832
Workers' compensation loss reserves	17,382	14,777
Income taxes payable	3,411	1,229
Other current liabilities	49,524	29,009
Total current liabilities	308,249	166,717
Long-term debt	1,100,424	575,213
Deferred income tax liabilities	79,833	69,436
Other long-term liabilities	17,283	7,372
Total liabilities	1,505,789	818,738
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	525	521
Paid-in capital	601,754	566,090
Retained earnings	586,125	428,419
Accumulated other comprehensive loss	(6,342)	(3,639)
Total stockholders’ equity	1,182,062	991,391
Total liabilities and stockholders’ equity	$ 2,687,851	$ 1,810,129