Condensed Consolidating Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 25, 2012 Successor [Member]	Sep. 25, 2012 Successor [Member]	Sep. 27, 2011 Predecessor [Member]	Sep. 27, 2011 Predecessor [Member]	Sep. 25, 2012 Parent Guarantor: Holdings [Member] Successor [Member]	Sep. 25, 2012 Parent Guarantor: Holdings [Member] Successor [Member]	Sep. 27, 2011 Parent Guarantor: Holdings [Member] Predecessor [Member]	Sep. 27, 2011 Parent Guarantor: Holdings [Member] Predecessor [Member]	Sep. 25, 2012 Subsidiary Issuer: NPC [Member] Successor [Member]	Sep. 25, 2012 Subsidiary Issuer: NPC [Member] Successor [Member]	Sep. 27, 2011 Subsidiary Issuer: NPC [Member] Predecessor [Member]	Sep. 27, 2011 Subsidiary Issuer: NPC [Member] Predecessor [Member]	Sep. 25, 2012 Subsidiary Co-Issuer: NPC Op Co A [Member] Successor [Member]	Sep. 25, 2012 Subsidiary Co-Issuer: NPC Op Co A [Member] Successor [Member]	Sep. 27, 2011 Subsidiary Co-Issuer: NPC Op Co A [Member] Predecessor [Member]	Sep. 27, 2011 Subsidiary Co-Issuer: NPC Op Co A [Member] Predecessor [Member]	Sep. 25, 2012 Subsidiary Co-Issuer: NPC Op Co B [Member] Successor [Member]	Sep. 25, 2012 Subsidiary Co-Issuer: NPC Op Co B [Member] Successor [Member]	Sep. 27, 2011 Subsidiary Co-Issuer: NPC Op Co B [Member] Predecessor [Member]	Sep. 27, 2011 Subsidiary Co-Issuer: NPC Op Co B [Member] Predecessor [Member]	Sep. 25, 2012 Eliminations [Member] Successor [Member]	Sep. 25, 2012 Eliminations [Member] Successor [Member]	Sep. 27, 2011 Eliminations [Member] Predecessor [Member]	Sep. 27, 2011 Eliminations [Member] Predecessor [Member]
Condensed Consolidating Statements of Income
Total sales	$ 256,233	$ 790,208	$ 237,851	$ 727,602					$ 256,233	$ 790,208	$ 237,851	$ 727,602
Total costs and expenses	243,565	731,942	228,731	685,564					243,565	731,942	228,731	685,564
Operating income	12,668	58,266	9,120	42,038					12,668	58,266	9,120	42,038
Interest expense	11,416	35,797	6,131	19,075					11,416	35,797	6,131	19,075
Loss on debt extinguishment		5,144								5,144
Equity in net income of subsidiary					2,378	14,372	3,469	18,125				22,963									(2,378)	(14,372)	(3,469)	(18,125)
Income before income taxes	1,252	17,325	2,989	22,963	2,378	14,372	3,469	18,125	1,252	17,325	2,989	19,075									(2,378)	(14,372)	(3,469)	(18,125)
Income tax expense	(1,126)	2,953	(480)	4,838					(1,126)	2,953	(480)	4,838
Net income	$ 2,378	$ 14,372	$ 3,469	$ 18,125	$ 2,378	$ 14,372	$ 3,469	$ 18,125	$ 2,378	$ 14,372	$ 3,469	$ 18,125									$ (2,378)	$ (14,372)	$ (3,469)	$ (18,125)