9. Revenue Recognition: Noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Noninterest Income (in scope of Topic 606)	$ 150	$ 155
Noninterest income (out-of-scope of Topic 606)	165	86
Total noninterest income	315	241
Customer Service Fees
Noninterest Income (in scope of Topic 606)	100	96
ATM Fee Income
Noninterest Income (in scope of Topic 606)	25	31
Other Income
Noninterest Income (in scope of Topic 606)	$ 25	$ 28