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12) Mortgage Servicing Rights: Schedule of Mortgage Servicing Rights (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Details    
Balance before valuation allowance at beginning of year $ 20,016,822 $ 21,376,937
MSRs proceeds from loan sales 459,414 3,922,816
Amortization (2,971,759) (5,282,931)
Application of valuation allowance to write down MSRs with other than temporary impairment 0 0
Balance before valuation allowance at year end 17,504,477 20,016,822
Mortgage servicing rights, net 17,504,477 20,016,822
Estimated fair value of MSRs at end of period $ 22,084,565 $ 28,885,316