12) Mortgage Servicing Rights: Assumptions used in determining MSR value (Details) - Decimal	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Text Block [Abstract]
Prepayment Speeds	21.20	15.30
Average Life in Years of MSR	3 years 10 months 6 days	5 years 3 months 8 days
Discount Rate	9.51	9.51