Note 1 - Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Number of Operating Segments	1
Number of Reportable Segments	1
Trading Securities	$ 0	$ 0	$ 0
Federal Home Loan Bank Stock and Federal Reserve Bank Stock	9,500,000	9,500,000
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	492,000	574,000
Net Deferred Loan Costs Percent of Average Loans Outstanding	0.05%	0.06%
Interest Receivable Percent of Average Loans Outstanding	0.30%	0.40%
Loans Held-for-sale, Mortgages	4,100,000	2,500,000
Mortgage Banking Revenues Percent of Total Revenue	1.60%	2.40%	1.28%
Servicing Asset at Fair Value, Amount	785,000	795,000
Mortgage Loans Serviced for Others	200,000,000	172,000,000
Cash Reserve Deposit Required and Made	19,900,000	17,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in Shares)	8,893	23,368	34,769
Adjustments to Additional Paid in Capital, Share-based Compensation, Employee Stock Purchase Program, Requisite Service Period Recognition	36,000	36,000	42,000
Impact of Method Change [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Allowance for Loan and Lease Losses, Period Increase (Decrease)	320,000
Equity Option [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)	22,049	24,049	24,049
Warrant [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)			223,992
Furniture and Fixtures [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Furniture and Fixtures [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Building and Building Improvements [Member] | Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Building and Building Improvements [Member] | Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Loans [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Interest Receivable	$ 3,400,000	$ 3,700,000
Minimum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years