Long-Term Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Debt obligations	$ 796,230	$ 735,230
Capital lease obligations and other debt	57,031	59,538
Long-term debt including capital lease obligation	853,261	794,768
Less — current portion	(33,881)	(19,356)
Current potion of long-term debt	819,380	775,412
Senior Notes [Member]
Debt Instrument [Line Items]
Debt obligations	$ 600,000	$ 600,000
Stated interest rate (percentage)	1.68%	1.67%
Secured Seller Notes [Member]
Debt Instrument [Line Items]
Debt obligations	$ 230	$ 230
Stated interest rate (percentage)	10.00%	10.00%
Revolving line of credit [Member]
Debt Instrument [Line Items]
Debt obligations	$ 196,000	$ 135,000
Effective interest rate (percentage)	1.68%	1.67%

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13,16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Capital Debt Obligations and Other Borrowings

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