Finance Receivables (Narrative) (Detail) (USD $)	Sep. 28, 2014	Dec. 31, 2013	Sep. 29, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 0	$ 0	$ 0
Greater than 90 Days Past Due	20,500,000	24,801,000	18,386,000
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0	0
Wholesale finance receivables, gross	20,300,000	24,600,000	17,800,000
Greater than 90 Days Past Due	20,343,000	24,594,000	17,759,000
Wholesale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0	0
Greater than 90 Days Past Due	157,000	207,000	627,000
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0	0
Nonperforming Financing Receivable [Member] | Wholesale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 0	$ 0	$ 0