Stock-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)	9 Months Ended
	Sep. 28, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning Balance, Shares	274,000
Exercised, Shares	(89,000)
Cancelled, Shares	(20,000)
Ending Balance, Shares	165,000
Options exercisable, Shares	115,000
Beginning Balance, Weighted Average Price	$ 8.62
Exercised, Weighted Average Price	$ 7.29
Cancelled, Weighted Average Price	$ 12.39
Ending Balance, Weighted Average Price	$ 8.60
Options exercisable, Weighted Average Price	$ 6.57
Ending Balance, Weighted Average Remaining Term (In years)	4 years 4 months 24 days
Options exercisable, Weighted Average Remaining Term (In years)	3 years 4 months 24 days
Ending Balance, Aggregate Intrinsic Value	$ 6,778,000
Options exercisable, Aggregate Intrinsic Value	$ 4,957,000