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12) Mortgage Servicing Rights: Schedule of Finite-Lived Intangible Assets, Future Amortization Expense, Mortgage Servicing Rights (Details)
Mar. 31, 2018
USD ($)
Details  
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year $ 4,091,450
Finite-Lived Intangible Assets, Amortization Expense, Year Two 4,091,450
Finite-Lived Intangible Assets, Amortization Expense, Year Three 4,091,450
Finite-Lived Intangible Assets, Amortization Expense, Year Four 4,091,303
Finite-Lived Intangible Assets, Amortization Expense, Year Five 3,269,025
Finite-Lived Intangible Assets, Amortization Expense, after Year Five 1,919,372
Finite-Lived Intangible Assets, Accumulated Amortization $ 21,554,050