Finance Receivables (Wholesale And Retail Receivables Accruing Interest And Are Past Due) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment, Past Due [Line Items]
Receivables past due and accruing interest	$ 28,918	$ 24,801	$ 28,033	$ 28,378	$ 35,742
United States [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Receivables past due and accruing interest	27,800	23,770	26,500	27,171	34,391
Canada [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Receivables past due and accruing interest	$ 1,118	$ 1,031	$ 1,533	$ 1,207	$ 1,351