Long-Term Debt and Interest Rate Swap (Narrative) (Details)		9 Months Ended
	Feb. 26, 2016 USD ($) center	Sep. 30, 2016 USD ($) letter_of_credit	Dec. 31, 2015 USD ($)
Line of Credit Facility [Line Items]
Accumulated other comprehensive income (loss)		$ (370,000)	$ (387,000)
Interest rate swap | Designated as hedging instrument
Line of Credit Facility [Line Items]
Annual fixed rate percentage		5.79%
Interest rate swap | Designated as hedging instrument | Accumulated net gain (loss) from cash flow hedges attributable to parent
Line of Credit Facility [Line Items]
Accumulated other comprehensive income (loss)		$ (593,000)
Income tax benefit		364,000
Interest rate swap | Designated as hedging instrument | Other noncurrent liabilities | Level 2
Line of Credit Facility [Line Items]
Net liability based on interest rate swap valuation model		$ 957,000
Amended and restated credit agreement
Line of Credit Facility [Line Items]
Loan acquisition costs	$ 1,812,000
Credit agreement | Amended and restated credit agreement
Line of Credit Facility [Line Items]
Borrowing capacity	100,000,000
Mortgage loan | Amended and restated credit agreement
Line of Credit Facility [Line Items]
Borrowing capacity	$ 72,500,000
Term of agreements	5 years
Period of amortization		25 years
Debt interest rate at period end	5.79%	4.52%
Number of owned nursing centers to secure Amended Mortgage Loan | center	17
Amended mortgage loan balance		$ 61,484,000
Mortgage loan | Amended and restated credit agreement | Interest rate swap | Designated as hedging instrument
Line of Credit Facility [Line Items]
Notional amount of interest rate derivatives	$ 30,000,000
Term loan facility | Amended and restated credit agreement
Line of Credit Facility [Line Items]
Borrowing capacity	$ 60,000,000
Amended mortgage loan balance		59,195,000
Term loan facility | Amended and restated credit agreement | LIBOR
Line of Credit Facility [Line Items]
Interest rate percentage	4.00%
Acquisition loan facility | Amended and restated credit agreement
Line of Credit Facility [Line Items]
Borrowing capacity	$ 12,500,000
Amended mortgage loan balance		$ 2,289,000
Acquisition loan facility | Amended and restated credit agreement | LIBOR
Line of Credit Facility [Line Items]
Interest rate percentage	4.75%
Amended revolver | Amended and restated credit agreement
Line of Credit Facility [Line Items]
Borrowing capacity	$ 27,500,000
Term of agreements		5 years
Borrowings outstanding		$ 9,000,000	$ 12,900,000
Balance available for borrowing under revolving credit center		6,981,000
Amended revolver | Amended and restated credit agreement | LIBOR
Line of Credit Facility [Line Items]
Interest rate percentage	4.00%
Letter of credit | Amended and restated credit agreement
Line of Credit Facility [Line Items]
Borrowings outstanding		$ 7,868,000
Annual fees for letters of credit issued under Revolver (as a percentage)		3.00%
Number of letters of credit | letter_of_credit		10