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Operating Leases (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Operating Leases [Abstract] | |||
| Operating lease renewal option, minimum (in years) | 1 year | ||
| Operating lease renewal option, maximum (in years) | 10 years | ||
| Operating lease original term, for tractors, trucks and trailers, minimum (in years) | 3 years | ||
| Operating lease original term, for tractors, trucks and trailers, maximum (in years) | 6 years | ||
| Sublease rental income | $ 770 | $ 556 | $ 356 |
| Expected future sublease rental income | 95 | ||
| Operating Leases, Future Minimum Payments Due [Abstract] | |||
| 2012 | 19,682 | ||
| 2013 | 16,673 | ||
| 2014 | 14,882 | ||
| 2015 | 11,422 | ||
| 2016 | 7,104 | ||
| Thereafter | 8,950 | ||
| Total | $ 78,713 | ||
| X | ||||||||||
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- Definition
Operating Lease Maximum Years In Renewal Option No definition available.
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- Definition
Operating Lease Minimum Years in Renewal Option No definition available.
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- Definition
Operating Lease Original Term Maximum No definition available.
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- Definition
Operating Lease Original Term Minimum No definition available.
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- Details
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- Definition
The total of future contractually required payments on leases defined as operating. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Contractually required future rental payments receivable on noncancelable subleasing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 the fifth year of the balance sheet date relating to leases defined as operating. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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 the fourth year of the balance sheet date relating to leases defined as operating. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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 the third year of the balance sheet date relating to leases defined as operating. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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 the second year of the balance sheet date relating to leases defined as operating. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 after the fifth year from the balance sheet date on leases defined as operating. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of revenue recognized for the period under subleasing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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