Long-term Debt and Credit Facilities (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Long-term debt
2013	$ 346,407
Capital leases
2013	302
2014	276
2015	252
2016	65
Future minimum payments
2013	346,709
2014	276
2015	252
2016	65
Interest on capital leases
2013	(18)
2014	(11)
2015	(5)
2016	(1)
Net future minimum payments
2013	346,691
2014	265
2015	247
2016	$ 64

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Represents the interest amount by which the minimum long-term debt and capital lease payments are reduced to calculate the present value of long-term debt and capital lease in the fourth fiscal year following the latest fiscal year.

+ References

No definition available.

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- Definition

Represents the interest amount by which the minimum long-term debt and capital lease payments are reduced to calculate the present value of long-term debt and capital lease in the next twelve months following the latest fiscal year.

+ References

No definition available.

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Represents the interest amount by which the minimum long-term debt and capital lease payments are reduced to calculate the present value of long-term debt and capital lease in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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- Definition

Represents the interest amount by which the minimum long-term debt and capital lease payments are reduced to calculate the present value of long-term debt and capital lease in the second fiscal year following the latest fiscal year.

+ References

No definition available.

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Amount of long-term debt maturing and contractually required rental payments due on leases meeting the criteria for capitalization maturing in the fourth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Amount of long-term debt and contractually required rental payments due on leases meeting the criteria for capitalization, maturing in the next twelve months following the latest fiscal year.

+ References

No definition available.

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Amount of long-term debt maturing and contractually required rental payments due on leases meeting the criteria for capitalization maturing in the third fiscal year following the latest fiscal year.

+ References

No definition available.

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Amount of long-term debt maturing and contractually required rental payments due on leases meeting the criteria for capitalization maturing in the second fiscal year following the latest fiscal year.

+ References

No definition available.

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Represents the present value of minimum future payments for long-term debt capital leases, net of interest on capital leases in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Represents the present value of minimum future payments for long-term debt and capital leases, net of interest on capital leases in the next twelve months following the latest fiscal year ended.

+ References

No definition available.

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Represents the present value of minimum future payments for long-term debt capital leases, net of interest on capital leases in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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- Definition

Represents the present value of minimum future payments for long-term debt capital leases, net of interest on capital leases in the second fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 30

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- Definition

Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.

+ References

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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