Discontinued Operations (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 01, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of discontinued operations, net of income taxes		$ 25,703	$ 0	$ 30,840
Cash and cash equivalents		23,869	31,714	37,350	$ 27,479
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents			(2,854)
Cash		23,869	28,860
Accounts receivable, net of allowance of $6,682 and $4,404, respectively		354,808	277,146
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net			(21,615)
Prepaid expenses and income taxes		12,686	13,308
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets			(1,205)
Workers' Compensation and Medical Malpractice Receivable, Current			13,370
Disposal Group, Including Discontinued Operations, Workers' Compensation and Medical Malpractice Receivable, Current			(5,358)
Other current assets		9,607	2,310
Disposal Group, Including Discontinued Operation, Other Assets, Current			0
Disposal Group, Including Discontinued Operation, Assets, Current		0	31,032
Assets, Current		414,208	366,026
Property and equipment, net		53,196	44,311
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment			(2,508)
Goodwill		874,906	512,060
Disposal Group, Including Discontinued Operation, Goodwill			(58,637)
Identifiable intangible assets, net		417,925	250,609
Disposal Group, Including Discontinued Operation, Intangible Assets			(11,960)
Other non-current assets		7,072	5,160
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent			(568)
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		0	73,673
Assets		1,767,307	1,251,839
Other Long-term Debt, Current			17,439
Accounts payable		9,132	7,925
Disposal Group, Including Discontinued Operation, Accounts Payable			(951)
Accrued payroll and contract professional pay		88,100	82,563
Disposal Group, Including Discontinued Operation, Accrued Liabilities			(4,626)
Workers' compensation and medical malpractice liability, current			15,564
Disposal Group Workers' Compensation and Medical Malpractice Liability, Current			(13,571)
Accrued Income Taxes, Current			340
Other current liabilities		47,425	20,729
Disposal Group, Including Discontinued Operation, Other Liabilities, Current			(1,047)
Disposal Group, Including Discontinued Operation, Liabilities, Current		0	20,195
Liabilities, Current		160,350	164,755
Long-term Debt, Excluding Current Maturities		755,508	394,418
Deferred income tax liabilities		61,539	48,075
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities, Noncurrent			(767)
Other long-term liabilities		5,116	7,937
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent			(1,479)
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent		0	2,246
Liabilities		982,513	617,431
Cash Provided by (Used in) Operating Activities, Discontinued Operations		(1,778)	836	(108)
Proceeds from Divestiture of Businesses, Net of Cash Divested		115,440	0	59,899
Other Cash Provided by (Used in) Investing Activities, Discontinued Operations		(14)	(308)	(183)
Cash Provided by (Used in) Investing Activities, Discontinued Operations		115,426	(308)	(183)
Disposal Group, Including Discontinued Operation, Revenue		12,068	137,166	153,465
Disposal Group Including Discontinued Operations Cost of Services		8,653	94,848	106,728
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)		3,415	42,318	46,737
Disposal Group, Including Discontinued Operation, General and Administrative Expense		2,385	33,078	38,991
Disposal Group Including Discontinued Operations Amortization of Intangible Assets		155	2,721	808
Disposal Group, Including Discontinued Operation, Operating Income (Loss)		875	6,519	6,938
Disposal Group, Including Discontinued Operation, Interest Expense		0	0	(2,456)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		875	6,519	4,482
Discontinued Operation, Tax Effect of Discontinued Operation		350	2,830	1,950
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		525	3,689	2,532
Scenario, Previously Reported [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents			31,714
Accounts receivable, net of allowance of $6,682 and $4,404, respectively			298,761
Prepaid expenses and income taxes			14,513
Workers' Compensation and Medical Malpractice Receivable, Current			18,728
Other current assets			2,310
Disposal Group, Including Discontinued Operation, Assets, Current			0
Assets, Current			366,026
Property and equipment, net			46,819
Goodwill			570,697
Identifiable intangible assets, net			262,569
Other non-current assets			5,728
Disposal Group, Including Discontinued Operation, Assets, Noncurrent			0
Assets			1,251,839
Other Long-term Debt, Current			17,439
Accounts payable			8,876
Accrued payroll and contract professional pay			87,189
Workers' compensation and medical malpractice liability, current			29,135
Accrued Income Taxes, Current			340
Other current liabilities			21,776
Disposal Group, Including Discontinued Operation, Liabilities, Current			0
Liabilities, Current			164,755
Long-term Debt, Excluding Current Maturities			394,418
Deferred income tax liabilities			48,842
Other long-term liabilities			9,416
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent			0
Liabilities			617,431
Physician Segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses	$ 123,000
Gain on sale of discontinued operations, net of income taxes	25,700
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation	$ 14,400
Proceeds from Divestiture of Businesses, Net of Cash Divested		$ 115,440	$ 0	0
AlliedHealthcareandNurseTravel [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses				62,400
Gain on sale of discontinued operations, net of income taxes				30,800
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation				$ 19,500