Note 3 - Loans (Detail) - Loan modifications that were classified as TDRs (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Number of Loans	1	1
Post-Modification Recorded Investment (in Dollars)	$ 6	$ 108
Commercial real estate lending interest rate concession [Member]
Number of Loans	1	-
Post-Modification Recorded Investment (in Dollars)	6
Consumer - Interest Reduction [Member]
Number of Loans	-	1
Post-Modification Recorded Investment (in Dollars)		108
Commercial real estate lending [Member]
Number of Loans	1	-
Post-Modification Recorded Investment (in Dollars)	$ 3