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Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022
Earnings Per Share Basic [Line Items]
Net (loss) income	$ (282)	$ 8,934	$ (89)	$ 18,037
Weighted-average shares of common stock outstanding:
Basic	21,762	21,675	21,696	21,677
Dilutive effect of common stock equivalents arising from share option and nonvested share awards		364		520
Diluted	21,762	22,039	21,696	22,197
Basic (loss) earnings per share	$ (0.01)	$ 0.41	$ 0.00	$ 0.83
Diluted (loss) earnings per share	$ (0.01)	$ 0.41	$ 0.00	$ 0.81
Share Option Awards [Member]
Weighted-average shares of common stock outstanding:
Antidilutive shares/awards excluded from diluted calculation	20	14	20	12
Nonvested Share Awards and Nonvested Share Unit Awards [Member]
Weighted-average shares of common stock outstanding:
Antidilutive shares/awards excluded from diluted calculation	298	403	327

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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