Borrowed Funds (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 item entity	Dec. 31, 2011 item
Federal funds purchase line available under repurchase agreements	$ 70,000,000
Number of Entities with Repurchase Agreement Lines Available	4
Repurchase Agreement transaction period	one-to-four day
Number of Repurchase Agreements that Exceed Ten Percent of Equity Capital	0	0
Loans pledged under FHLB agreement	532,900,000	694,000,000
Investment Securities Pledged Under FHLB Agreement	12,200,000	38,800,000
Total Amount Available Under the Borrower-In-Custody Program	0	0
First Year of Scheduled FHLB Principlal Payments	2016
Line of Credit Facility, Maximum Borrowing Capacity	33,200,000
Stillwater National [Member]
Advances by Federal Home Loan Bank	20,000,000
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Weighted Average Interest Rate	3.51%
Bank Of Kansas [Member]
Advances by Federal Home Loan Bank	$ 5,000,000
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Weighted Average Interest Rate	3.07%