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, 2016	Dec. 31, 2015
Assets, Fair Value, Nonrecurring	$ 6,284	$ 7,572
Fair Value, Inputs, Level 1
Assets, Fair Value, Nonrecurring	130	130
Fair Value, Inputs, Level 2
Assets, Fair Value, Nonrecurring	6,154	7,442
Fair Value, Inputs, Level 3
Assets, Fair Value, Nonrecurring	0	0
Impaired Loans, Carrying Value
Assets, Fair Value, Nonrecurring	741	479
Total fair value loss during the year	0	0
Impaired Loans, Carrying Value | Fair Value, Inputs, Level 1
Assets, Fair Value, Nonrecurring	0	0
Impaired Loans, Carrying Value | Fair Value, Inputs, Level 2
Assets, Fair Value, Nonrecurring	0	0
Impaired Loans, Carrying Value | Fair Value, Inputs, Level 3
Assets, Fair Value, Nonrecurring	741	479
Other Real Estate Owned
Assets, Fair Value, Nonrecurring	447	480
Total fair value loss during the year	0	39
Other Real Estate Owned | Fair Value, Inputs, Level 1
Assets, Fair Value, Nonrecurring	0	0
Other Real Estate Owned | Fair Value, Inputs, Level 2
Assets, Fair Value, Nonrecurring	0	0
Other Real Estate Owned | Fair Value, Inputs, Level 3
Assets, Fair Value, Nonrecurring	$ 447	$ 480