| **Commitments and Contingencies (Summary of minimum future lease payments) (Details) (USD $)In Thousands, unless otherwise specified** | Dec. 31, 2012 |
|----------------------------------------------------------------------------------------------------------------------------------------|---------------|
| **OperatingLeasesFutureMinimumPaymentsDueAbstract**                                                                                    |          |
| 2013                                                                                                                                   | $ 27,764      |
| 2014                                                                                                                                   | 23,809        |
| 2015                                                                                                                                   | 22,527        |
| 2016                                                                                                                                   | 19,600        |
| 2017                                                                                                                                   | 15,411        |
| 2018 and thereafter                                                                                                                    | 64,944        |
| Total minimum lease payments                                                                                                           | 174,055       |
| **Capital Leases Future Minimum Payments [Abstract]**                                                                                  |          |
| 2013                                                                                                                                   | 11,775        |
| 2014                                                                                                                                   | 11,784        |
| 2015                                                                                                                                   | 11,794        |
| 2016                                                                                                                                   | 11,804        |
| 2017                                                                                                                                   | 11,783        |
| 2018 and thereafter                                                                                                                    | 54,948        |
| Total minimum lease payments                                                                                                           | 113,888       |
| Less amount representing interest                                                                                                      | 33,276        |
| Less currency maturity of obligations under capital leases                                                                             | 5,995         |
| Long-term obligations under capital leases, excluding current maturity                                                                 | $ 74,617      |

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Amount, including related party amounts, 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 and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.
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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 and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.
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Amount of minimum lease payments for capital leases.
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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.
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Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.
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Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.
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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 minimum lease payments maturing after the fifth fiscal year following the latest fiscal year for capital leases.
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| - Definition
Amount necessary to reduce net minimum lease payments to present value for capital leases.
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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.
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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.
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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.
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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.
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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) -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.Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 -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.Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717
+ Details**Name:**us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**instant |