Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
Sep. 27, 2013	Mar. 29, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Income Tax Disclosure [Abstract]
Tax expense	$ 144,000		$ 4,496,000	$ 5,721,000	$ 11,260,000
Rate against income before income taxes	2.70%		35.70%	21.60%	33.70%
Discrete income tax charge	700,000	600,000	500,000		400,000
Impact of lower effective tax rate	$ 700,000
Per share impact of lower effective tax rate	$ 0.03

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration