Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018	Dec. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 17,466	$ 16,993	$ 16,155
Income tax benefit	8,067	4,467	6,331
Compensation and Related Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	16,903	16,458	15,558
Compensation and Related Expenses [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	16,320	15,561	14,809
Compensation and Related Expenses [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	583	897	749
General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	563	535	597
General and Administrative Expenses [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 563	$ 535	$ 597