Acquisition (Alpine Valley Bread Company) - Additional Information (Detail) - Alpine Valley Bread Company $ in Thousands		12 Months Ended
	Oct. 13, 2015 USD ($) shares	Jan. 02, 2016 USD ($) ProductionFacility
Business Acquisition [Line Items]
Percentage of stock acquired	100.00%
Date of acquisition		Oct. 13, 2015
Business acquisition, description		On October 13, 2015, the company completed the acquisition of 100% of the outstanding common stock of Alpine, a leading organic bread baker, from its shareholders for total consideration of approximately $121.9 million inclusive of payments for certain tax benefits. We paid cash of $109.3 million and issued 481,540 shares of our common stock to the sellers in a private placement.
Total consideration paid	$ 121,942
Business acquisition	$ 109,340
Common shares issued for acquisition | shares	481,540
Goodwill acquired	$ 36,000
Acquisition-related costs		$ 1,600
Sales related to acquisition		$ 11,900
Number of production facility | ProductionFacility		2
Fair value of trade receivable		$ 4,800
Gross amount receivable		$ 4,800