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3) Investments: Commercial Real Estate Held for Investment (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Bank and other loans payable $ 245,973,378   $ 297,824,368
Impairment losses on commercial real estate held for sale 0 $ 31,429  
Commercial Real Estate      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross 99,547,615   71,517,902
Bank and other loans payable $ 55,831,600   $ 46,153,283