Indebtedness and Interest Expense - Interest Expense (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended						3 Months Ended	7 Months Ended	3 Months Ended		7 Months Ended	3 Months Ended	7 Months Ended	3 Months Ended	7 Months Ended		3 Months Ended	7 Months Ended	3 Months Ended	7 Months Ended	2 Months Ended	3 Months Ended	2 Months Ended	3 Months Ended	2 Months Ended	3 Months Ended	2 Months Ended	3 Months Ended	2 Months Ended		3 Months Ended	2 Months Ended	3 Months Ended	9 Months Ended
	Sep. 29, 2013	Sep. 29, 2013 Term Loan Facility [Member]	Sep. 29, 2013 Senior Notes [Member]	Sep. 29, 2013 Predecessor Facility [Member]	Sep. 29, 2013 Bridge Loan [Member]	Sep. 29, 2013 Capital Lease Obligations [Member]	Sep. 28, 2014 Successor [Member]	Sep. 28, 2014 Successor [Member]	Sep. 28, 2014 Successor [Member] Term Loan Facility [Member]		Sep. 28, 2014 Successor [Member] Term Loan Facility [Member]	Sep. 28, 2014 Successor [Member] Senior Notes [Member]	Sep. 28, 2014 Successor [Member] Senior Notes [Member]	Sep. 28, 2014 Successor [Member] Predecessor Facility [Member]	Sep. 28, 2014 Successor [Member] Predecessor Facility [Member]	Sep. 28, 2014 Successor [Member] Bridge Loan [Member]	Sep. 28, 2014 Successor [Member] Capital Lease Obligations [Member]	Sep. 28, 2014 Successor [Member] Capital Lease Obligations [Member]	Sep. 28, 2014 Successor [Member] Sale Leaseback Obligations [Member]	Sep. 28, 2014 Successor [Member] Sale Leaseback Obligations [Member]	Feb. 14, 2014 Predecessor [Member]	Sep. 29, 2013 Predecessor [Member]	Feb. 14, 2014 Predecessor [Member] Term Loan Facility [Member]	Sep. 29, 2013 Predecessor [Member] Term Loan Facility [Member]	Feb. 14, 2014 Predecessor [Member] Senior Notes [Member]	Sep. 29, 2013 Predecessor [Member] Senior Notes [Member]	Feb. 14, 2014 Predecessor [Member] Predecessor Facility [Member]	Sep. 29, 2013 Predecessor [Member] Predecessor Facility [Member]	Feb. 14, 2014 Predecessor [Member] Bridge Loan [Member]	Feb. 14, 2014 Predecessor [Member] Capital Lease Obligations [Member]	Sep. 29, 2013 Predecessor [Member] Capital Lease Obligations [Member]	Feb. 14, 2014 Predecessor [Member] Sale Leaseback Obligations [Member]	Sep. 29, 2013 Predecessor [Member] Sale Leaseback Obligations [Member]	Sep. 29, 2013 Predecessor [Member] Sale Leaseback Obligations [Member]
Debt Instrument [Line Items]
Interest Expense, Debt		$ 0							$ 8,725	[1]	$ 21,586												$ 0	$ 0
Interest expense, excluding amortization			0	4,372	0							5,169	12,592	0	0	4,943									0	0	745	1,488	0
Capital Leases, Income Statement, Interest Expense						1,191												1,082												275	422
InteretExpenseSaleLeaseback																			932	932												0	0	0
Interest Expense, Lessee, Assets under Capital Lease																	469
Amortization of debt issuance costs	347						1,001	2,487													58	112
Other		(401)					(322)				(366)											(744)	73
Interest expense	$ 5,509						$ 15,974	$ 43,256													$ 1,151	$ 1,278

[1] Includes amortization of original issue discount.