7. Other Real Estate Owned: Other Real Estate, Roll Forward (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Real Estate, Beginning Balance			$ 626,071
Additions, transfers from loans	$ 0	$ 0	0	$ 0
Sales	(10,000)	0	(229,000)	0
Other Real Estate, Period Increase (Decrease)	392,000	447,000	397,000	447,000
Less: write-downs	0	0	(5,000)	0
Other Real Estate, Ending Balance	391,571		391,571
Thousand
Other Real Estate, Beginning Balance	402,000	447,000	626,000	447,000
Other Real Estate, Ending Balance	$ 392,000	$ 447,000	$ 392,000	$ 447,000