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3) Investments: Commercial Real Estate Held for Investment (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Bank and other loans payable $ 253,965,181   $ 217,572,612
Impairment losses on commercial real estate held for sale 31,429 $ 0  
Commercial Real Estate      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross 86,326,000   87,815,000
Bank and other loans payable $ 54,641,000   $ 54,917,000