Note 16 - Stockholders' Equity (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,634,246,000		$ 1,602,888,000
Increase (Decrease) in Total Equity	31,400,000
Percentage Change in Total Equity	2.00%
Net Income (Loss) Attributable to Parent	35,980,000	31,259,000
Other Comprehensive Income (Loss), Net of Tax	4,923,000	7,639,000
Dividends, Common Stock, Cash	$ 8,000,000