Finance Receivables (Narrative) (Detail) (USD $)	Mar. 29, 2015	Dec. 31, 2014	Mar. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 0	$ 0	$ 0
Greater than 90 Days Past Due	19,139,000	28,918,000	17,059,000
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0	0
Wholesale finance receivables, gross	19,000,000	28,700,000	17,000,000
Greater than 90 Days Past Due	18,995,000	28,712,000	16,969,000
Wholesale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0	0
Greater than 90 Days Past Due	144,000	206,000	90,000
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

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The balance of financing receivables that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

+ Details

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524

+ Details

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- Definition

Financing receivables that are equal to or greater than 90 days past due.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524

+ Details

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

+ Details

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- Details

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- Details

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- Details

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