8. Fair Value: Schedule of Fair Value of Assets Measured on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Impaired Loans, Carrying Value
Assets, Fair Value, Nonrecurring	$ 1,687	$ 1,731
Total fair value loss during the year	0	(142)
Other Real Estate Owned
Assets, Fair Value, Nonrecurring	719	564
Total fair value loss during the year	88	(13)
Fair Value, Inputs, Level 1 | Impaired Loans, Carrying Value
Assets, Fair Value, Nonrecurring	0	0
Fair Value, Inputs, Level 1 | Other Real Estate Owned
Assets, Fair Value, Nonrecurring	0	0
Fair Value, Inputs, Level 2 | Impaired Loans, Carrying Value
Assets, Fair Value, Nonrecurring	0	0
Fair Value, Inputs, Level 2 | Other Real Estate Owned
Assets, Fair Value, Nonrecurring	0	0
Fair Value, Inputs, Level 3 | Impaired Loans, Carrying Value
Assets, Fair Value, Nonrecurring	1,687	1,731
Fair Value, Inputs, Level 3 | Other Real Estate Owned
Assets, Fair Value, Nonrecurring	$ 719	$ 564