7. Other Real Estate Owned: Other Real Estate, Roll Forward (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other Real Estate, Beginning Balance			$ 626,071
Additions, transfers from loans	$ 0	$ 0	0	$ 0
Sales	(162,000)	0	(219,000)	0
Other Real Estate, Period Increase (Decrease)	407,000	447,000	407,000	447,000
Less: write-downs	(5,000)	0	(5,000)	0
Other Real Estate, Ending Balance	402,371		402,371
Thousand
Other Real Estate, Beginning Balance	569,000	447,000	626,000	447,000
Other Real Estate, Ending Balance	$ 402,000	$ 447,000	$ 402,000	$ 447,000