Note 11 - Derivative Financial Instruments (Details) - Effect of derivative instruments on income: (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Financial Derivatives:
Financial Derivatives, Net gain (loss)	$ 558	[1]	$ 140	[1]	$ 2,880	[1]	$ (2,860)	[1]
Interest Rate Cap [Member]
Financial Derivatives:
Financial Derivatives, Net gain (loss)	(7)		(52)		(18)		(314)
Interest Rate Swap [Member]
Financial Derivatives:
Financial Derivatives, Net gain (loss)	$ 565		$ 192		$ 2,898		$ (2,546)

[1] Net gains and (losses) are recorded as part of "Net gain/loss from fair value adjustments" in the Consolidated Statements of Income.