Share Components of Outstanding Common Stock (Detail) - shares	Jan. 01, 2017	Jan. 03, 2016
Components Of Common Stock [Line Items]
Total Common Stock	48,100,143	49,838,221
Voting [Member]
Components Of Common Stock [Line Items]
Total Common Stock	48,083,721	49,820,467
Non-Voting [Member]
Components Of Common Stock [Line Items]
Total Common Stock	16,422	17,754