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Related Party Transactions (Details) (Navistar, USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended |  | 0 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Jul. 18, 2007 | Jul. 18, 2007 Common stock | Dec. 31, 1996 Common stock
Related party transactions: |  |  |  |  |
Common stock issued (in shares) |  |  |  |  | 4,264,000
Number of shares repurchased |  |  |  | 3,600,000 |
Percent ownership interest of third party |  |  | 9.10% |  |
Total sales | $ 63,303 | $ 63,182 |  |  |
Accounts receivable | $ 7,617 | $ 11,495 |  |  |

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