Note 12 - Derivative Financial Instruments and Hedging Activities (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Derivative, Number of Instruments Held	4
Loan Swaps [Member]
Notional Amount of Interest Rate Cash Flow Hedge Derivatives	$ 10,600,000
Derivative Liability, Fair Value, Net	(382,000)		(453,000)
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 67,000	$ 109,000