Schedule II - Valuation of Qualifying Accounts of Continuing Operations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 3,879		$ 3,047		$ 2,160
Charged to Costs and Expenses	5,710		4,066		2,845
Charged to Other Accounts	0		0		0
Other	0		0		0
(Write-offs) net of Recoveries	(3,545)		(3,234)		(1,958)
Balance at End of Period	6,044		3,879		3,047
Professional Liability Reserve
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	27,067		22,740		19,357
Charged to Costs and Expenses	5,930		4,870		3,831
Charged to Other Accounts	2,440	[1]	8,136	[1]	7,824	[1]
Other	0		0		0
Payments	(10,274)	[2]	(8,679)	[2]	(8,272)	[2]
Balance at End of Period	25,163		27,067		22,740
Workers Compensation Reserve
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	176		287		309
Charged to Costs and Expenses	372		473		142
Charged to Other Accounts	0	[1]	0	[1]	0	[1]
Other	18		(87)		311
Payments	(316)	[2]	(497)	[2]	(475)	[2]
Balance at End of Period	250		176		287
Health Insurance Reserve
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	843		679		853
Charged to Costs and Expenses	6,748		8,321		6,320
Charged to Other Accounts	237	[1]	879	[1]	887	[1]
Other	0		0		0
Payments	(7,141)	[2]	(9,036)	[2]	(7,381)	[2]
Balance at End of Period	$ 687		$ 843		$ 679

[1] As discussed in Note 3 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.