Note 11 - Earnings Per Share (Details) - Earnings Per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basic EPS:
Net income from continuing operations (in Dollars)	$ 52,622	$ 50,453	$ 71,233
Assumed conversions of Senior Notes (in Dollars)	5,005	4,771	4,898
Adjusted income from continuing operations (in Dollars)	$ 57,627	$ 55,224	$ 76,131
Weighted average number of common shares outstanding - basic	85,095	87,522	90,022
Add: Dilutive effect of stock options and restricted stock awards	1,767	876	965
Dilutive effect of Senior Notes	15,682	15,682	15,682
Diluted weighted average number of common shares outstanding	102,544	104,080	106,669
Diluted income from continuing operations per common share (in Dollars per share)	$ 0.56	$ 0.53	$ 0.71
Stock options and warrants excluded from calculation of diluted earnings per share because anti-dilutive for the period	415	2,671	2,907
Basic income from continuing operations per common share (in Dollars per share)	$ 0.62	$ 0.58	$ 0.79