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Capital Notes (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2019
Jan. 25, 2017
2017 Notes [Member]      
Debt Instrument [Line Items]      
Capital note issued     $ 5,000,000
Capital notes, interest rate     4.00%
Capital notes, maturity date   Jan. 24, 2022  
Capital Notes 4% Due 1/24/2022 [Member] | 2017 Notes [Member]      
Debt Instrument [Line Items]      
Duration of written notice to holders   30 days  
Capital Notes 4% Due 1/24/2022 [Member] | Equity Capital [Member]      
Debt Instrument [Line Items]      
Capital note proceeds $ 3,000,000    
Capital Notes 4% Due 1/24/2022 [Member] | Debt Services [Member]      
Debt Instrument [Line Items]      
Capital note proceeds   $ 2,000,000