Share Components of Outstanding Common Stock (Detail) - shares	Jan. 03, 2016	Dec. 28, 2014
Components Of Common Stock [Line Items]
Total Common Stock	49,838,221	55,553,149
Voting [Member]
Components Of Common Stock [Line Items]
Total Common Stock	49,820,467	55,535,395
Non-Voting [Member]
Components Of Common Stock [Line Items]
Total Common Stock	17,754	17,754