Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Income Taxes [Line Items]
INCOME TAX (BENEFIT) EXPENSE	$ (2,118,000)	$ 1,763,000	$ 1,974,000	$ 4,161,000
Income tax expense increase (decrease)	(3,900,000)		(2,200,000)
Discrete tax benefit due to the reversal of a valuation allowance	$ (4,500,000)
Effective tax rate	(23.30%)	25.90%	8.10%	23.90%
Increase (decrease) in income tax rate related to tax benefit of exercise of employee stock option			15.80%
Percentage of discrete tax benefit recognized in the prior year related to the retroactive legislative reinstatement				2.40%