Stock-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)	3 Months Ended
	Mar. 28, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Beginning Balance, Shares	75,000
Exercised, Shares	(29,000)
Ending Balance, Shares	46,000
Options Exercisable, Shares	44,000
Beginning Balance, Weighted Average Price	$ 7.28
Exercised, Weighted Average Price	$ 6.16
Ending Balance, Weighted Average Price	$ 7.98
Options Exercisable, Weighted Average Price	$ 7.47
Ending Balance, Weighted Average Remaining Term (In years)	3 years 3 months 18 days
Options Exercisable, Weighted Average Remaining Term (In years)	3 years 2 months 12 days
Ending Balance, Aggregate Intrinsic Value	$ 1,866,000
Options Exercisable, Aggregate Intrinsic Value	$ 1,807,000