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Acquisitions (Details) (Salvage vehicle auction business and online marketing company, USD $) In Thousands, unless otherwise specified | Jan. 31, 2014 | Jan. 31, 2013
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Salvage vehicle auction business and online marketing company |  |
Business Acquisition [Line Items] |  |
Total cash paid, net of cash acquired | $ 14,228 | $ 31,243
Contingent consideration | 533 | 3,690
Total acquisition price | $ 14,761 | $ 34,933

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