Long-Term Debt (GO Zone Act Senior Notes Due 2029) (Details) (USD $) In Thousands, unless otherwise specified		12 Months Ended				1 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Redeemed Prior To August First Twenty Twenty [Member]	Dec. 31, 2013 Redeemed On Or After August First Twenty Twenty [Member]	Dec. 31, 2013 GO Zone 6 1/2% Senior Notes Due 2029 [Member]	Dec. 31, 2012 GO Zone 6 1/2% Senior Notes Due 2029 [Member]	Jul. 31, 2010 Gulf Opportunity Zone Act Of 2005 [Member]	Dec. 31, 2007 Gulf Opportunity Zone Act Of 2005 [Member]	Jul. 02, 2010 Gulf Opportunity Zone Act Of 2005 [Member]	Dec. 13, 2007 Gulf Opportunity Zone Act Of 2005 [Member]	Jul. 02, 2010 Gulf Opportunity Zone Act Of 2005 [Member] GO Zone 6 1/2% Senior Notes Due 2029 [Member]
Debt Instrument [Line Items]
Senior notes, principal amount issued								$ 100,000	$ 250,000
Stated interest rate	6.50%			6.50%	6.50%					6.50%
Maturity date						Aug. 01, 2029	Nov. 01, 2032
Percentage of principal required if called		100.00%	100.00%
Senior notes				100,000	100,000
Minimum debt amount guaranteed by subsidiaries				$ 5,000