Earnings Per Share - Schedule of Computation of Basic Earnings per Share and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018		Sep. 29, 2018		Jun. 30, 2018		Mar. 31, 2018		Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Numerator:
Net income	$ 17,548	$ 21,308	$ 21,499	$ 23,407	$ 34,599		$ 34,017		$ 34,339		$ 30,647		$ 83,762	$ 133,602	$ 106,599
Denominator:
Weighted average basic shares outstanding													32,606	33,097	33,964
Effect of compensation awards													82	110	88
Weighted average diluted shares outstanding													32,688	33,207	34,052
Earnings Per Share:
Basic													$ 2.57	$ 4.04	$ 3.14
Diluted	$ 0.54	$ 0.65	$ 0.66	$ 0.71	$ 1.05	[1]	$ 1.03	[1]	$ 1.03	[1]	$ 0.93	[1]	$ 2.56	$ 4.02	$ 3.13

[1] Quarterly information does not add to year to date information due to rounding