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Long-Term Debt, Interest Rate Swap and Finance Lease Obligations - Narrative (Details)
12 Months Ended
Oct. 14, 2020
USD ($)
Dec. 31, 2020
USD ($)
nursing_center
letter_of_credit
Dec. 31, 2019
USD ($)
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Long-term debt   $ 61,087,000 $ 74,143,000
Weighted average interest rate of long term debt   5.00%  
Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Number of owned nursing centers | nursing_center   15  
Number of letters of credit | letter_of_credit   4  
Amount available for borrowing under the revolvers   $ 16,446,000  
Acquisition loan      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Borrowing capacity     12,500,000
Affiliated revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Borrowing capacity     2,000,000
Mortgage term loan | Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Debt instrument, floor interest rate 1.00%    
Mortgage term loan | Revolver | LIBOR      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Long-term debt basis spread based on LIBOR 4.00%    
Loans Payable | Acquisition loan      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Long-term debt   0 9,400,000
Loans Payable | Mortgage loan      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Long-term debt   $ 61,087,000 49,743,000
Mortgages      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Borrowing capacity     67,500,000
Mortgages | Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Borrowing capacity $ 62,000,000    
Mortgage loan with principal and interest payable monthly based 25 years    
Mortgages | Mortgage term loan | Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Stated interest rate   5.00%  
Revolving Credit Facility      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Borrowing capacity     40,250,000
Revolving Credit Facility | Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Borrowing capacity $ 2,000,000    
Term of loan 3 years    
Letters of credit security deposit for a lease   $ 12,387,000  
Revolving Credit Facility | Mortgage loan      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Borrowing capacity $ 36,000,000    
Revolving Credit Facility | Line of Credit | Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Long-term debt   0 14,000,000
Revolving Credit Facility | Line of Credit | Affiliated revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Long-term debt   0 1,000,000
Revolving Credit Facility | Line of Credit | Revolver and Affiliated Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Long-term debt   $ 0 $ 15,000,000
Letter of credit | Revolver      
Long-Term Debt and Interest Rate Swap (Textual) [Abstract]      
Annual fee for letters of credit issued under Revolver outstanding   3.00%