Note 16 - Lines of Credit and Total Debt Obligations (Details) - Debt obligations (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Note 16 - Lines of Credit and Total Debt Obligations (Details) - Debt obligations [Line Items]
Senior Notes	$ 1,095,620	$ 744,842
5.375% Senior Notes Due December 2014 [Member]
Note 16 - Lines of Credit and Total Debt Obligations (Details) - Debt obligations [Line Items]
Senior Notes	249,814	249,621
5.375% Senior Notes Due July 2015 [Member]
Note 16 - Lines of Credit and Total Debt Obligations (Details) - Debt obligations [Line Items]
Senior Notes	249,935	249,895
5.625% Senior Notes Due 2020 [Member]
Note 16 - Lines of Credit and Total Debt Obligations (Details) - Debt obligations [Line Items]
Senior Notes	245,871	245,326
6.000% Senior Notes Due January 2043 [Member]
Note 16 - Lines of Credit and Total Debt Obligations (Details) - Debt obligations [Line Items]
Senior Notes	$ 350,000