Loans and Allowance For Loan Losses: Purchased Credit Impaired Loans Aging Policy (Details) (USD $)	Dec. 31, 2012
30-59 Days Past Due
Purchased Credit Impaired Loans	$ 206,000
60-89 Days Past Due
Purchased Credit Impaired Loans	0
Greater Than 90 Days Past Due
Purchased Credit Impaired Loans	0
Total Past Due
Purchased Credit Impaired Loans	206,000
Current
Purchased Credit Impaired Loans	4,400,000
Greater Than 90 Days and Accruing
Purchased Credit Impaired Loans	$ 0