Condensed Consolidating Financial Statements (Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 25, 2012 Successor [Member]	Dec. 25, 2012 Successor [Member] Parent Guarantor: Holdings [Member]	Dec. 25, 2012 Successor [Member] Subsidiary Issuer: NPC [Member]	Dec. 25, 2012 Successor [Member] Subsidiary Co-Issuer: NPC Op Co A [Member]	Dec. 25, 2012 Successor [Member] Subsidiary Co-Issuer: NPC Op Co B [Member]	Dec. 25, 2012 Successor [Member] Eliminations [Member]	Dec. 27, 2011 Predecessor [Member]	Dec. 28, 2010 Predecessor [Member]	Dec. 27, 2011 Predecessor [Member] Parent Guarantor: Holdings [Member]	Dec. 28, 2010 Predecessor [Member] Parent Guarantor: Holdings [Member]	Dec. 27, 2011 Predecessor [Member] Subsidiary Issuer: NPC [Member]	Dec. 28, 2010 Predecessor [Member] Subsidiary Issuer: NPC [Member]	Dec. 27, 2011 Predecessor [Member] Subsidiary Co-Issuer: NPC Op Co A [Member]	Dec. 28, 2010 Predecessor [Member] Subsidiary Co-Issuer: NPC Op Co A [Member]	Dec. 27, 2011 Predecessor [Member] Subsidiary Co-Issuer: NPC Op Co B [Member]	Dec. 28, 2010 Predecessor [Member] Subsidiary Co-Issuer: NPC Op Co B [Member]	Dec. 27, 2011 Predecessor [Member] Eliminations [Member]	Dec. 28, 2010 Predecessor [Member] Eliminations [Member]
Operating activities
Net cash flows provided by operating activities	$ 70,418		$ 70,418				$ 86,201	$ 76,178			$ 86,201	$ 76,178
Investing activities
Capital expenditures	(40,464)		(40,464)				(23,775)	(18,331)			(23,775)	(18,331)
Purchase of the stock of the Company	(431,540)	(216,635)	(431,540)			216,635	0	0
Purchase of business assets, net of cash acquired	(19,371)		(19,371)				0	0
Proceeds from sale or disposition of assets	240		240				993	2,118			993	2,118
Net cash flows used in investing activities	(491,135)	(216,635)	(491,135)			216,635	(22,782)	(16,213)			(22,782)	(16,213)
Financing activities
Retirement of predecessor entity debt and other obligations	(372,700)		(372,700)				0	0
Proceeds from equity contributions, net	216,635	216,635	216,635			(216,635)	0	0
Issuance of debt	565,000		565,000				0	0
Payments on term bank facilities	(6,875)		(6,875)				(29,670)	(31,340)			(29,670)	(31,340)
Debt issue costs	(34,614)		(34,614)				0	0
Proceeds from sale-leaseback transactions	1,006		1,006				486	865			486	865
Interest rate derivative	(636)		(636)				0	0
Net cash provided by financing activities	367,816	216,635	367,816			(216,635)	(29,184)	(30,475)			(29,184)	(30,475)
Net change in cash and cash equivalents	(52,901)		(52,901)				34,235	29,490			34,235	29,490
Beginning cash and cash equivalents	78,394		78,394				44,159	14,669			44,159	14,669
Ending cash and cash equivalents	$ 25,493		$ 25,493				$ 78,394	$ 44,159			$ 78,394	$ 44,159