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Acquisitions - Summary of preliminary purchase price allocation (Details) (Salvage vehicle auction business in Brazil and auction platform in Germany, USD $)
In Thousands, unless otherwise specified
Jan. 31, 2013
Salvage vehicle auction business in Brazil and auction platform in Germany
 
Business Acquisition [Line Items]  
Total cash paid, net of cash acquired $ 31,243
Contingent consideration 3,690
Total acquisition price 34,933
Allocation of the acquisition price:  
Accounts receivable and prepaid expenses 848
Property and equipment 9,054
Property in escrow 6,371
Intangible assets 9,197
Goodwill recorded during the period 13,456
Liabilities assumed (3,993)
Fair value of net assets and liabilities acquired $ 34,933