Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Jan. 03, 2021
Earnings Per Share Basic [Line Items]
Net income	$ 26,134	$ 102,386	$ 55,940
Weighted-average shares of common stock outstanding:
Basic	21,634,000	21,670,000	21,260,000
Dilutive effect of common stock equivalents arising from share option, nonvested share and nonvested share unit awards	455,000	842,000	403,000
Diluted	22,089,000	22,512,000	21,663,000
Basic earnings per share	$ 1.21	$ 4.73	$ 2.63
Diluted earnings per share	$ 1.18	$ 4.55	$ 2.58
Share Option Awards [Member]
Weighted-average shares of common stock outstanding:
Antidilutive shares/unit awards excluded from diluted calculation	16,000	2,000	494,000
Nonvested Share Awards and Nonvested Share Unit Awards [Member]
Weighted-average shares of common stock outstanding:
Antidilutive shares/unit awards excluded from diluted calculation	185,000	0	46,000