Benefit Plans - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 29, 2015	Apr. 30, 2014
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Entity contribution in its owned sponsored pension plan during the period	0
Rehabilitation Plan [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Multi-employer pension plan Rehabilitation Plan adoption effective date	Jan. 01, 2015
Collective bargaining agreement, effective date	Apr. 28, 2014
Likely withdrawal liability if Company withdraws from multi-employer pension plan		4,500,000
Minimum [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Benefit pension plan, anticipated contribution remainder of year	7,000,000
Maximum [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Benefit pension plan, anticipated contribution remainder of year	10,000,000