Fair Value Measurements, Quantitative Information (Details) - Mortgage Loans on Real Estate [Member] - Market Comparables [Member] $ in Thousands	Dec. 31, 2019 USD ($)
Residential 1-4 Family [Member]
Investments, Fair Value Disclosure [Abstract]
Fair Value	$ 74
Residential 1-4 Family [Member] | Selling Costs [Member] | Weighted Average [Member]
Investments, Fair Value Disclosure [Abstract]
Fair value measurement	0.0725
Residential 1-4 Family [Member] | Liquidation Discount [Member] | Weighted Average [Member]
Investments, Fair Value Disclosure [Abstract]
Fair value measurement	0.0400
Commercial Real Estate [Member]
Investments, Fair Value Disclosure [Abstract]
Fair Value	$ 1,294
Commercial Real Estate [Member] | Selling Costs [Member] | Weighted Average [Member]
Investments, Fair Value Disclosure [Abstract]
Fair value measurement	0.0600
Commercial Real Estate [Member] | Liquidation Discount [Member] | Weighted Average [Member]
Investments, Fair Value Disclosure [Abstract]
Fair value measurement	0.3500
Construction [Member]
Investments, Fair Value Disclosure [Abstract]
Fair Value	$ 74
Construction [Member] | Selling Costs [Member] | Weighted Average [Member]
Investments, Fair Value Disclosure [Abstract]
Fair value measurement	0.0725
Construction [Member] | Liquidation Discount [Member] | Weighted Average [Member]
Investments, Fair Value Disclosure [Abstract]
Fair value measurement	0.0400