Earnings Per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 02, 2021	Jan. 01, 2022	Jan. 02, 2021
Net loss from continuing operations	$ (10,435)	$ (23,057)	$ (10,435)
Net income from discontinued operations, net of tax	11,491	49,677	11,491
Net income	$ 1,056	$ 26,620	$ 1,056
Weighted-average shares - basic		24,348	23,669
Effect of dilutive potential common shares		0	0
Weighted-average shares – diluted		24,348	23,669
Basic and diluted net income (loss) per share:
Basic and diluted—continuing operations	$ (0.44)	$ (0.95)	$ (0.44)
Discontinued operations	0.49	2.04	0.49
Net income per share	$ 0.04	$ 1.09	$ 0.04