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12) Mortgage Servicing Rights: Schedule of Mortgage Servicing Rights (Details) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Details    
Balance before valuation allowance at beginning of year $ 18,872,362 $ 12,679,755
MSRs proceeds from loan sales 4,057,974 8,603,154
Amortization (2,533,768) (2,410,547)
Balance before valuation allowance at year end 20,396,568 18,872,362
Mortgage servicing rights, net 20,396,568 18,872,362
Estimated fair value of MSRs at end of period $ 26,785,380 $ 25,496,832