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Financing Agreements Financing Arrangements, Interest Rates and Maturities (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Jun. 30, 2014
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Dec. 31, 2013
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| Debt Instrument [Line Items] | ||
| Debt Instrument, Interest Rate, Effective Percentage | 4.87% | |
| Capital Lease Obligations | $ 30,625 | $ 7,123 |
| Debt and Capital Lease Obligations | 367,625 | 287,623 |
| Capital Lease Obligations, Current | 3,119 | 3,281 |
| Long-term Debt and Capital Lease Obligations | 364,506 | 284,342 |
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Master Notes [Member] | Senior Unsecured Notes Three Point Eight One Percent Due May Twenty Eighteen [Member]
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| Debt Instrument [Line Items] | ||
| Debt Instrument, Interest Rate, Stated Percentage | 3.81% | |
| Debt Instrument, Maturity Date | May 31, 2018 | |
| Long-term Debt | 25,000 | 25,000 |
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Master Notes [Member] | Senior Unsecured Notes Four Point Six Zero Percent Due May Twenty Twenty One [Member]
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| Debt Instrument [Line Items] | ||
| Debt Instrument, Interest Rate, Stated Percentage | 4.60% | |
| Debt Instrument, Maturity Date | May 31, 2021 | |
| Long-term Debt | 75,000 | 75,000 |
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Master Notes [Member] | Senior Unsecured Notes Three Point One Three Percent Due December Twenty Twenty [Member]
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| Debt Instrument [Line Items] | ||
| Debt Instrument, Interest Rate, Stated Percentage | 3.13% | |
| Debt Instrument, Maturity Date | Dec. 31, 2020 | |
| Long-term Debt | 100,000 | 100,000 |
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Line of Credit [Member]
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| Debt Instrument [Line Items] | ||
| Line of Credit Facility, Interest Rate at Period End | 1.03% | |
| Line of Credit Facility, Expiration Date | Jan. 31, 2018 | |
| Long-term Line of Credit | $ 137,000 | $ 80,500 |
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Minimum [Member]
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| Debt Instrument [Line Items] | ||
| Lease Expiration Date | Jul. 01, 2014 | |
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Maximum [Member]
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| Debt Instrument [Line Items] | ||
| Lease Expiration Date | Jul. 31, 2029 |
| X | ||||||||||
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- Definition
Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of capital lease obligation due within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
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
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| X | ||||||||||
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- Definition
Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Date which lease or group of leases is set to expire, in CCYY-MM-DD format. No definition available.
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| X | ||||||||||
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- Definition
The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Date the credit facility terminates, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The effective interest rate at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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