Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Narrative) (Details)

v3.20.1
Commitments and Contingencies (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Commitments and Contingencies [Line Items]    
(Income) expense for long-term compensation plan $ 164,000 $ (11,000)
Accrual for long-term compensation plans 164,000 0
Line of Credit [Member]    
Commitments and Contingencies [Line Items]    
Line of credit, amount outstanding 0 $ 0
Line of credit, maximum borrowing capacity 15,000,000  
Line of credit, remaining borrowing capacity $ 7,335,000  
Line of credit, basis spread on variable rate 2.00%  
Line of credit facility, interest rate at period end 3.80%  
Line of credit, expiration date Aug. 12, 2021  
Long-Term Compensation Plan [Member]    
Commitments and Contingencies [Line Items]    
Award payouts, stock 0 0
Award payouts, cash $ 0 $ 0
Plans 2017 to 2019 and 2018 to 2020 [Member]    
Commitments and Contingencies [Line Items]    
Percentage paid out in stock 50.00%  
Percentage paid out in cash 50.00%  
Plans 2019 to 2021 [Member]    
Commitments and Contingencies [Line Items]    
Percentage paid out in stock 75.00%  
Percentage paid out in cash 25.00%  
Minimum [Member] | Line of Credit [Member]    
Commitments and Contingencies [Line Items]    
Line of credit, covenant, liquidity requirement $ 10,000,000