Note 15 - Financial Derivatives (Details) (USD $)	12 Months Ended		1 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 Interest Rate Swap [Member]	Dec. 31, 2013 Positive Fair Value Member	Dec. 31, 2012 Positive Fair Value Member	Dec. 31, 2013 Negative Fair Value Member	Dec. 31, 2012 Negative Fair Value Member
Note 15 - Financial Derivatives (Details) [Line Items]
Number Of Swap Agreements			5
Interest Rate Swaps Notional Amount			$ 300,000,000
Interest Rate Swap Term			3 years
Net Accrued On Interest Rate Swaps	288,000	4,900,000
Notional Amount Of Option Contract				200,000	209,000
Open Option Contracts Written, at Fair Value				83	2,000
Sum of Spot and Forward Contract Notional Amount				267,600,000	188,100,000	236,300,000	133,700,000
Increase Decrease in Fair Value				$ 6,200,000	$ 2,900,000	$ 6,100,000	$ 1,600,000