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Debt (Details Narrative)
$ in Thousands
1 Months Ended 3 Months Ended
May 31, 2020
USD ($)
Apr. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
May 29, 2018
USD ($)
Credit facility, Average amount outstanding     $ 77,800 $ 77,300    
Long-term debt     101,929   $ 74,929  
Debt issuance costs, net     677   803  
Borrowings on credit facility     32,000 7,000    
Payments on credit facility     $ 5,000      
Base Rate [Member] | Minimum [Member]            
Spread on variable rate borrowings     1.50%      
Base Rate [Member] | Maximum [Member]            
Spread on variable rate borrowings     3.00%      
LIBOR [Member] | Minimum [Member]            
Spread on variable rate borrowings     2.50%      
LIBOR [Member] | Maximum [Member]            
Spread on variable rate borrowings     4.00%      
Amended and Restated Credit Agreement [Member]            
Line of credit facility, maximum borrowing capacity           $ 110,000
Line of credit facility maturity date     May 28, 2021      
Debt issuance costs     $ 700   $ 800  
Debt instrument, interest rate, effective percentage     3.87%      
Debt covenant total adjusted leverage ratio maximum     4.0      
Debt covenant interest coverage ratio minimum     3.0      
Total adjusted leverage ratio     3.5      
Interest coverage ratio     7.5      
Credit agreement minimum unused capacity at time of distributions     $ 5,000      
Credit agreement available borrowings     7,300      
Finance lease liabilities     700      
Borrowings on credit facility     $ 29,600      
Amended and Restated Credit Agreement [Member] | Subsequent Event [Member]            
Borrowings on credit facility   $ 7,100        
Payments on credit facility $ 5,000          
Line of Credit [Member]            
Commitment fee rate, percentage     0.50%      
Interest expense including commitment fee     $ 900 $ 1,200    
Line of Credit [Member] | Minimum [Member]            
Debt instrument, interest rate, effective percentage during period     3.61% 5.98%    
Line of Credit [Member] | Maximum [Member]            
Debt instrument, interest rate, effective percentage during period     4.80% 6.02%