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Leases (Tables) | 12 Months Ended
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Dec. 31, 2011
Leases [Abstract] |
Minimum Lease Payments |
|  | Capital Leases |  |  | Operating Leases |
2012 |  | $ | 18,553 |  |  | $ | 2,661 |
2013 |  |  | 11,574 |  |  |  | 1,816 |
2014 |  |  | 10,851 |  |  |  | 1,275 |
2015 |  |  | 8,574 |  |  |  | 804 |
2016 |  |  | 5,863 |  |  |  | 617 |
Thereafter |  |  | — |  |  |  | 1,120 |
|  |  | 55,415 |  |  | $ | 8,293 |
Less amount representing interest (2.3% to 5.9%) |  |  | 3,073 |  |  |  |  |
Present value of minimum lease payments |  | $ | 52,342 |  |  |  |  |

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- Definition Schedule Of Future Minimum Lease Payments For Non Cancelable Leases [Table Text Block] + References No definition available. + Details
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- Details
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