Long-Term Debt - Summary of Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term Debt	$ 55,463us-gaap_LongTermDebt	$ 56,278us-gaap_LongTermDebt
Current maturities of long-term debt	(50,907)us-gaap_LongTermDebtCurrent	(952)us-gaap_LongTermDebtCurrent
Long-term debt, less current maturities	4,556us-gaap_LongTermDebtNoncurrent	55,326us-gaap_LongTermDebtNoncurrent
Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes	50,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	5.50%
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 5,463	$ 6,278

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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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.

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