Benefit Plans - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 28, 2015	Apr. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Entity contribution in its owned sponsored pension plan during the period	$ 0
Rehabilitation Plan [Member]
Defined Benefit Plan Disclosure [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]
Defined Benefit Plan Disclosure [Line Items]
Benefit pension plan, anticipated contribution remainder of year	$ 7,000,000
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit pension plan, anticipated contribution remainder of year	$ 10,000,000