Schedule II - Valuation of Qualifying Accounts of Continuing Operations (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		$ 8,180	$ 6,044	$ 3,879
Charged to Costs and Expenses		7,163	7,507	5,710
Charged to Other Accounts		0	0	0
Other		0	0	0
(Write-offs) net of Recoveries		(5,017)	(5,371)	(3,545)
Balance at End of Period		10,326	8,180	6,044
Professional Liability Reserve
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		21,618	25,163	27,067
Charged to Costs and Expenses		6,423	5,213	5,930
Charged to Other Accounts	[1]	0	1,010	2,440
Other		114	0	0
Payments	[2]	(8,178)	(9,768)	(10,274)
Balance at End of Period		19,977	21,618	25,163
Workers Compensation Reserve
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		227	250	176
Charged to Costs and Expenses		372	364	372
Charged to Other Accounts	[1]	0	0	0
Other		0	0	18
Payments	[2]	(428)	(387)	(316)
Balance at End of Period		171	227	250
Health Insurance Reserve
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		686	687	843
Charged to Costs and Expenses		8,896	6,294	6,748
Charged to Other Accounts	[1]	0	0	237
Other		(137)	0	0
Payments	[2]	(8,426)	(6,295)	(7,141)
Balance at End of Period		$ 1,019	$ 686	$ 687

[1] As discussed in Note 3, "Discontinued Operations" of the Consolidated Financial Statements, the Company has presented the results of certain divestiture and lease termination transactions as discontinued operations. The amounts charged to Other Accounts represent the amounts charged to discontinued operations.

[2] Payments for the Professional Liability Reserve include amounts paid for claims settled during the period as well as payments made under structured arrangements for claims settled in earlier periods.