7. Other Real Estate Owned: Other Real Estate, Roll Forward (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other Real Estate, Beginning Balance	$ 626,071
Additions, transfers from loans	0	$ 0
Sales	(57,000)	0
Other Real Estate, Period Increase (Decrease)	569,000	447,000
Less: write-downs	0	0
Other Real Estate, Ending Balance	569,371
Thousand
Other Real Estate, Beginning Balance	626,000	447,000
Other Real Estate, Ending Balance	$ 569,000	$ 447,000