Other Contingencies (Details) (USD $)	1 Months Ended	3 Months Ended		1 Months Ended
	Jul. 31, 2011	Mar. 31, 2014 financial_covenant state	Mar. 31, 2014 Standby Letter Of Credit [Member]	Jan. 31, 2013 Maximum [Member]
Short-term Debt [Line Items]
Bank line of credit		$ 125,000,000
Borrowings under line of credit		0
Irrevocable standby letter of credit, outstanding			51,520,000
Reduction of bank line of credit		$ 51,520,000
Number of financial covenants		1
Credit line, term		5 years
Line of credit expiration date		Dec. 18, 2018
Number of states in which entity operates		48
Percentage of reduction to Medicare payments to nursing centers	11.10%
Percentage of reduction of Medicare payments to plans and providers				2.00%