Note 21 - Dividend Reinvestment Plan (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock Issued During Period, Shares, Dividend Reinvestment Plan	17,956	21,281	28,778
Stock Issued During Period, Value, Dividend Reinvestment Plan (in Dollars)	$ 291,000	$ 287,000	$ 310,000