Receivables (Schedule of Other Receivables and Advances) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	$ 72,478	$ 51,999
Other receivables and advances	1,193	1,407
Medicare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	20,402	14,415
Medicaid and other non-federal government programs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	31,208	20,133
Other patient and resident receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables before the allowance for doubtful accounts	$ 20,868	$ 17,451