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Merger - Intangible Assets Acquired (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 12, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 30,050
Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	6,700
Useful Life	Indefinite
Customer lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	5,200
Useful Life	7 years
Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	13,500
Useful Life	20 years
Favorable leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets	$ 4,650
Favorable leases [Member] \| Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	7 years
Favorable leases [Member] \| Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life	22 years