12) Mortgage Servicing Rights: Schedule of Finite-Lived Intangible Assets, Future Amortization Expense, Mortgage Servicing Rights (Details)	Mar. 31, 2021 USD ($)
Text Block [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 5,760,982
Finite-Lived Intangible Assets, Amortization Expense, Year One	4,670,850
Finite-Lived Intangible Assets, Amortization Expense, Year Two	4,116,524
Finite-Lived Intangible Assets, Amortization Expense, Year Three	3,617,054
Finite-Lived Intangible Assets, Amortization Expense, Year Four	3,191,065
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	21,422,886
Finite-Lived Intangible Assets, Accumulated Amortization	$ 42,779,361