Leased Properties - Components of Rent Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
LEASED PROPERTIES
Rental expense	$ 9,651	$ 10,032	$ 7,992
Cold Storage [Member]
LEASED PROPERTIES
Rental expense	3,995	3,931	2,919
Real estate
LEASED PROPERTIES
Rental expense	1,554	1,994	1,795
Equipment
LEASED PROPERTIES
Rental expense	$ 4,102	$ 4,107	$ 3,278

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration