Fair Value Measurements: Schedule of Fair Value of Assets on a Nonrecurring Basis (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Impaired Loans
Assets, Fair Value Disclosure, Nonrecurring	$ 1,501	$ 1,379
Other Real Estate Owned
Assets, Fair Value Disclosure, Nonrecurring	775	1,284
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(233)	(4)
Fair Value, Inputs, Level 3 | Impaired Loans
Assets, Fair Value Disclosure, Nonrecurring	1,501	1,379
Fair Value, Inputs, Level 3 | Other Real Estate Owned
Assets, Fair Value Disclosure, Nonrecurring	$ 775	$ 1,284