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12) Mortgage Servicing Rights: Schedule of Finite-Lived Intangible Assets, Future Amortization Expense, Mortgage Servicing Rights (Details)
Sep. 30, 2020
USD ($)
Text Block [Abstract]  
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year $ 4,926,285
Finite-Lived Intangible Assets, Amortization Expense, Year One 3,690,972
Finite-Lived Intangible Assets, Amortization Expense, Year Two 3,094,986
Finite-Lived Intangible Assets, Amortization Expense, Year Three 2,609,308
Finite-Lived Intangible Assets, Amortization Expense, Year Four 2,213,796
Finite-Lived Intangible Assets, Amortization Expense, after Year Five 11,852,129
Finite-Lived Intangible Assets, Accumulated Amortization $ 28,387,476