Note 16 - Stockholders' Equity (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Note 16 - Stockholders' Equity (Details) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,494,401,000		$ 1,458,971,000
Increase (Decrease) in Total Equity	35,400,000
Percentage Change in Total Equity	2.40%
Net Income (Loss) Attributable to Parent	31,259,000	28,847,000
Series B Preferred Stock [Member]
Note 16 - Stockholders' Equity (Details) [Line Items]
Net Income (Loss) Attributable to Parent	31,300,000
Available-for-sale Securities, Gross Unrealized Loss	7,600,000
Dividends, Common Stock, Cash	$ 4,000,000