Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Minimum Debt Amount Guaranteed By Subsidiaries

+ References

No definition available.

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- Definition

Percentage of the principal required in the event bonds are redeemed

+ References

No definition available.

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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, 2014	Jul. 31, 2010	Dec. 31, 2013	Jul. 02, 2010
Debt Instrument [Line Items]
Stated interest rate	6.50%
Minimum debt amount guaranteed by subsidiaries	5,000
GO Zone 6 1/2% Senior Notes Due 2029 [Member]
Debt Instrument [Line Items]
Stated interest rate	6.50%		6.50%
Senior notes	100,000		100,000
Redeemed Prior To August First Twenty Twenty [Member] \| GO Zone 6 1/2% Senior Notes Due 2029 [Member]
Debt Instrument [Line Items]
Percentage of principal required if called	100.00%
Redeemed On Or After August First Twenty Twenty [Member] \| GO Zone 6 1/2% Senior Notes Due 2029 [Member]
Debt Instrument [Line Items]
Percentage of principal required if called	100.00%
Gulf Opportunity Zone Act Of 2005 [Member]
Debt Instrument [Line Items]
Senior notes, principal amount issued				$ 100,000
Maturity date		Aug. 01, 2029
Gulf Opportunity Zone Act Of 2005 [Member] \| GO Zone 6 1/2% Senior Notes Due 2029 [Member]
Debt Instrument [Line Items]
Stated interest rate				6.50%