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Financial Services Arrangements - Additional Information (Detail) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Investments in and Advances to Affiliates [Line Items]    
Investment in affiliates $ 88,690,000 $ 89,107,000
Net amount financed for dealers 1,321,137,000  
Trade receivables, net 176,221,000 $ 204,876,000
Aggregate repurchase obligation, amount $ 146,440,000  
Maximum    
Investments in and Advances to Affiliates [Line Items]    
Aggregate repurchase obligation, percentage 15.00%  
Finance affiliate    
Investments in and Advances to Affiliates [Line Items]    
Investment in affiliates $ 88,690,000  
Polaris Acceptance    
Investments in and Advances to Affiliates [Line Items]    
Equity method investment ownership percentage 50.00%  
Trade receivables, net $ 414,510,000  
Securitization Facility    
Investments in and Advances to Affiliates [Line Items]    
Outstanding balance of receivables $ 906,627,000