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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2011
Commitments and Contingencies [Abstract] |
Schedule of rent expense associated with operating leases | The table below presents rent expenses associated with operating leases for the past three years (in thousands):
| 2011 |  |  | 2010 |  |  | 2009
$ | 62,099 |  | $ | 64,995 |  | $ | 67,898
Future minimum lease payments related to non-cancelable operating leases | The table below sets forth the approximate future minimum lease payments as of December 31, 2011 related to non-cancelable operating leases and the non-cancelable portion of certain vehicle operating leases with initial terms of one year or more (in thousands):
2012 |  | 41,952 |
2013 |  | 33,801 |
2014 |  | 26,387 |
2015 |  | 19,582 |
2016 |  | 13,682 |
Thereafter |  | 14,253 |

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 840 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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- Definition Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 840 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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