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		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Noninterest Income (in scope of Topic 606)	$ 153	$ 168	$ 302	$ 322
Noninterest income (out-of-scope of Topic 606)	68	139	279	226
Total noninterest income	221	307	581	548
Customer Service Fees
Noninterest Income (in scope of Topic 606)	103	102	203	197
ATM Fee Income
Noninterest Income (in scope of Topic 606)	27	32	51	63
Other Income
Noninterest Income (in scope of Topic 606)	$ 23	$ 34	$ 48	$ 62