Receivables (Schedule of Other Receivables and Advances) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	$ 47,316	$ 36,537
Other receivables	862	1,118
Medicare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	16,312	12,889
Medicaid and other non-federal government programs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	14,710	13,131
Other patient and resident receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	$ 16,294	$ 10,517