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Commitments and Contingencies 2 (Details) (USD $) In Thousands | Dec. 31, 2010 | Dec. 31, 2009
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Operating Leases - Future Minimum Rental Payments |  |
Operating Leases - Future Minimum Rental Payments 2011 | $ 142,437 |
Operating Leases - Future Minimum Rental Payments 2012 | 120,887 |
Operating Leases - Future Minimum Rental Payments 2013 | 101,211 |
Operating Leases - Future Minimum Rental Payments 2014 | 77,111 |
Operating Leases - Future Minimum Rental Payments 2015 | 59,812 |
Operating Leases - Future Minimum Rental Payments After 2015 | 676,671 |
Operating Leases - Future Minimum Rental Payments Total | 1,178,129 |
Operating Leases - Future Minimum Rental Receipts |  |
Operating Leases - Future Minimum Rental Receipts 2011 | 33,813 |
Operating Leases - Future Minimum Rental Receipts 2012 | 28,723 |
Operating Leases - Future Minimum Rental Receipts 2013 | 22,100 |
Operating Leases - Future Minimum Rental Receipts 2014 | 16,170 |
Operating Leases - Future Minimum Rental Receipts 2015 | 7,237 |
Operating Leases - Future Minimum Rental Receipts After 2015 | 634 |
Operating Leases - Future Minimum Rental Receipts Total | 108,677 |
Capital Leases - Future Minimum Rental Payments |  |
Capital Leases - Future Minimum Rental Payments 2011 | 532 |
Capital Leases - Future Minimum Rental Payments 2012 | 544 |
Capital Leases - Future Minimum Rental Payments 2013 | 560 |
Capital Leases - Future Minimum Rental Payments 2014 | 568 |
Capital Leases - Future Minimum Rental Payments 2015 | 576 |
Capital Leases - Future Minimum Rental Payments After 2015 | 5,811 |
Capital Leases - Future Minimum Rental Payments Total | 8,591 |
Less: Interest expense | (4,206) |
Present value of minimum lease payments | 4,385 |
Short-term capital lease obligation | (101) | (76)
Long-term portion of obligations under capital leases | $ 4,284 | $ 4,320

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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 and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 7, 10, 13 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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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 and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 7, 10, 13 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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- Definition The total of contractually required rental payments on leases meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition Contractually required rental payments on leases meeting the criteria for capitalization, due within one year of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition Contractually required rental payments on leases meeting the criteria for capitalization, due within the fifth year from the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition Contractually required rental payments on leases meeting the criteria for capitalization, due within the fourth year from the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition Contractually required rental payments on leases meeting the criteria for capitalization, due within the third year from the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition Contractually required rental payments on leases meeting the criteria for capitalization, due within the second year from the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition Contractually required rental payments due on leases meeting the criteria for capitalization, after the fifth year from the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition Amount necessary to reduce net minimum lease payments to present value calculated at the entity's incremental borrowing rate at the inception of the lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition The discounted value of future cash flows under leases meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph a(ii) + Details
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- Definition The total of future contractually required payments on leases defined as operating. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) + Details
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- Definition For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within one year of the balance sheet date relating to leases defined as operating. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 122 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 16 -Subparagraph b(i) + Details
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- Definition Future rental payments receivable within one year of the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 23 -Subparagraph b(ii) + Details
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