Note 16 - Stockholders' Equity (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Stockholders' Equity Note [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,570,384,000		$ 1,570,384,000		$ 1,458,971,000
Increase (Decrease) in Total Equity			111,400,000
Percentage Change in Total Equity			7.60%
Net Income (Loss) Attributable to Parent	35,909,000	32,478,000	102,252,000	91,241,000
Other Comprehensive Income (Loss), Net of Tax	61,000	(6,110,000)	20,894,000	(21,648,000)
Dividends, Common Stock, Cash			$ 15,100,000