Unaudited Quarterly Financial Information - Additional Information (Detail) - USD ($)	3 Months Ended			4 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 08, 2016	Jul. 16, 2016	Apr. 23, 2016	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Quarterly Financial Information Disclosure [Abstract]
Impairment charges	$ 24,900,000
Settlement funds	9,250,000
Pension plan settlement loss	173,000	$ 1,832,000	$ 4,641,000	$ 0	$ 6,646,000		$ 15,387,000
Intangible asset impairment	2,300,000					$ 0	0
Deferred income taxes	(900,000)				$ (14,457,000)	$ 18,293,000	$ 9,241,000
Net impact of intangible asset impairment and reduction to deferred tax expense	$ 500,000