Quarterly report pursuant to Section 13 or 15(d)

Debt (Details Textual)

v3.22.1
Debt (Details Textual)
3 Months Ended
Feb. 05, 2021
USD ($)
Apr. 15, 2019
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]        
Outstanding borrowings     $ 35,230,000 $ 33,397,000
Revolving Credit Facility        
Debt Instrument [Line Items]        
Long-term line of credit     35,000,000 32,974,000
Outstanding borrowings     $ 35,000,000 32,974,000
The 2021 Credit Agreement        
Debt Instrument [Line Items]        
Percentage of total depreciation expense 50.00%      
Debt instrument, covenant, minimum fixed coverage ratio 1.20      
Debt instrument, covenant, maximum leverage ratio 3.50      
The 2021 Credit Agreement | Eurodollar Loan        
Debt Instrument [Line Items]        
Effective percentage     2.37%  
LIBOR rate     0.37%  
The 2021 Credit Agreement | ABR Loans        
Debt Instrument [Line Items]        
Effective percentage     4.25%  
Lender prime rate     3.25%  
The 2021 Credit Agreement | London Interbank Offered Rate (LIBOR) | Eurodollar Loan        
Debt Instrument [Line Items]        
Basis spread on variable rate     2.00%  
The 2021 Credit Agreement | Base Rate | ABR Loans        
Debt Instrument [Line Items]        
Basis spread on variable rate     1.00%  
The 2021 Credit Agreement | Minimum | London Interbank Offered Rate (LIBOR) | Eurodollar Loan        
Debt Instrument [Line Items]        
Basis spread on variable rate     2.00%  
The 2021 Credit Agreement | Minimum | Base Rate | ABR Loans        
Debt Instrument [Line Items]        
Basis spread on variable rate     1.00%  
The 2021 Credit Agreement | Maximum | London Interbank Offered Rate (LIBOR) | Eurodollar Loan        
Debt Instrument [Line Items]        
Basis spread on variable rate     3.00%  
The 2021 Credit Agreement | Maximum | Base Rate | ABR Loans        
Debt Instrument [Line Items]        
Basis spread on variable rate     2.00%  
The 2021 Credit Agreement | Revolving Credit Facility        
Debt Instrument [Line Items]        
Line of credit facility $ 75,000,000      
Revolving credit facility 25,000,000      
Borrowings under revolving credit facility 30,000,000      
The 2021 Credit Agreement | Letter of Credit        
Debt Instrument [Line Items]        
Line of credit facility 7,000,000      
The 2015 Credit Agreement        
Debt Instrument [Line Items]        
Long-term line of credit 800,000      
The 2015 Credit Agreement | Revolving Credit Facility        
Debt Instrument [Line Items]        
Repayments $ 8,200,000      
Financing Agreement        
Debt Instrument [Line Items]        
Outstanding borrowings     $ 230,000 $ 423,000
Financing Agreement | Medical Equipment        
Debt Instrument [Line Items]        
Line of credit facility   $ 2,000,000    
Debt term   36 months    
Outstanding borrowings     $ 200,000