Finance Receivables (Narrative) (Detail) (USD $)	Mar. 30, 2014	Dec. 31, 2013	Mar. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 0	$ 0	$ 0
Greater than 90 Days Past Due	17,059,000	24,801,000	21,060,000
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0	0
Wholesale finance receivables, gross	17,000,000	24,600,000	20,300,000
Greater than 90 Days Past Due	16,969,000	24,594,000	20,258,000
Wholesale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0	0
Greater than 90 Days Past Due	90,000	207,000	802,000
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