Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Jun. 28, 2014	Sep. 27, 2014	Sep. 28, 2013
Income Taxes [Line Items]
Income tax interest and penalties accrued	$ 0	$ 0		$ 0	$ 0
Unrealized tax benefit	4,000			4,000
Effective tax rate	39.80%	18.10%		23.10%	18.40%
Income tax expense benefit	5,900,000		(5,900,000)
Additional tax income tax expense	9,861,000	8,541,000		25,240,000	20,921,000
Intercompany Debt [Member]
Income Taxes [Line Items]
Income tax expense benefit	5,900,000
Additional tax income tax expense	$ 2,600,000