Note 3 - Loans and Allowance for Loan Losses (Details) - Loans Modified as Troubled Debt Restructurings (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Commercial:
Financing Receivable Modification- Number of Contracts	3	3
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	$ 368,000	$ 2,943,000
Financing Receivable Modification- Post Modification Recorded Principal Balance	337,000	2,943,000
Commercial and Industrial [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	1	1
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	14,000	875,000
Financing Receivable Modification- Post Modification Recorded Principal Balance	14,000	875,000
Vacant Land,Land Developement and Residential Construction [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	0	0
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	0	0
Financing Receivable Modification- Post Modification Recorded Principal Balance	0	0
Real Estate-Owner Occupied [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	0	0
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	0	0
Financing Receivable Modification- Post Modification Recorded Principal Balance	0	0
Real Estate-Non-Owner Occupied [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	2	2
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	354,000	2,068,000
Financing Receivable Modification- Post Modification Recorded Principal Balance	323,000	2,068,000
Real Estate-Multi Family And Residential Rental [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	0	0
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	0	0
Financing Receivable Modification- Post Modification Recorded Principal Balance	0	0
Commercial [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	3	3
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	368,000	2,943,000
Financing Receivable Modification- Post Modification Recorded Principal Balance	337,000	2,943,000
Home Equity and Other [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	0	0
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	0	0
Financing Receivable Modification- Post Modification Recorded Principal Balance	0	0
One-Four Family Mortgages [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	0	0
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	0	0
Financing Receivable Modification- Post Modification Recorded Principal Balance	0	0
Retail [Member]
Commercial:
Financing Receivable Modification- Number of Contracts	0	0
Financing Receivable Modification- Pre-Modification Recorded Principal Balance	0	0
Financing Receivable Modification- Post Modification Recorded Principal Balance	$ 0	$ 0