Stock-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)	6 Months Ended
	Jun. 29, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning Balance, Shares	274,000
Exercised, Shares	(65,000)
Ending Balance, Shares	209,000
Options exercisable, Shares	139,000
Beginning Balance, Weighted Average Price	$ 8.62
Exercised, Weighted Average Price	$ 7.74
Ending Balance, Weighted Average Price	$ 8.90
Options exercisable, Weighted Average Price	$ 6.49
Ending Balance, Weighted Average Remaining Term (In years)	4 years 10 months 24 days
Options exercisable, Weighted Average Remaining Term (In years)	3 years 10 months 24 days
Ending Balance, Aggregate Intrinsic Value	$ 7,677,000
Options exercisable, Aggregate Intrinsic Value	$ 5,441,000