Income Taxes - Additional Information (Detail) (USD $)	0 Months Ended	2 Months Ended	7 Months Ended		3 Months Ended	7 Months Ended	2 Months Ended	3 Months Ended	9 Months Ended
	Feb. 14, 2014	Feb. 14, 2014	Sep. 28, 2014	Dec. 29, 2013	Sep. 28, 2014 Successor [Member]	Sep. 28, 2014 Successor [Member]	Feb. 14, 2014 Predecessor [Member]	Sep. 29, 2013 Predecessor [Member]	Sep. 29, 2013 Predecessor [Member]	Sep. 28, 2014 State and Local Jurisdiction [Member]	Dec. 29, 2013 State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Effective income tax rate					34.30%	28.40%	59.10%	37.70%	38.10%
Tax Credit Carryforward, Amount										$ 1,400,000	$ 1,400,000
Tax Credit Carryforward, Valuation Allowance										500,000	100,000
Deferred Tax Liabilities, Net			210,600,000	55,700,000
Increase in deferred tax liability resulting from tax effect of purchase accounting adjustments	213,200,000
Deferred income taxes		(1,800,000)	(56,500,000)			(56,431,000)	(1,785,000)		(477,000)
Unrecognized tax benefits			2,200,000	2,600,000
Unrecognized tax benefits that would decrease effective tax rate and provision for income taxes, if recognized			1,400,000
Expected decrease in unrecognized tax benefits within next twelve months			400,000
Total amount of interest and penalties accrued related to unrecognized tax benefits			$ 1,600,000	$ 1,900,000