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Capital Notes (Narrative) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |
Proceeds used to pay off debt | $ 5,000,000
2020 Offering [Member] |
Debt Instrument [Line Items] |
Capital notes, interest rate | 3.25%
Capital notes, maturity date | Sep. 30, 2025
Principal notes | $ 10,050,000
Capital Notes 4% Due 1/24/2022 [Member] |
Debt Instrument [Line Items] |
Capital notes, interest rate | 4.00%
Proceeds used to pay off debt | $ 5,000,000

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