Condensed Consolidating Financial Statements (Statements of Income) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 25, 2012	Dec. 27, 2011	Dec. 28, 2010
Condensed Consolidating Statements of Income
Income tax expense (benefit)	$ 2,287	$ (3,503)	$ 5,665
Successor [Member]
Condensed Consolidating Statements of Income
Total sales	1,048,923
Total costs and expenses	970,698
Operating income	78,225
Interest expense	46,691
Loss on debt extinguishment	14,227
Equity in net income of subsidiary
Income before income taxes	17,307
Income tax expense (benefit)	2,287
Net income	15,020
Predecessor [Member]
Condensed Consolidating Statements of Income
Total sales		980,973	978,284
Total costs and expenses		954,569	921,872
Operating income		26,404	56,412
Interest expense		25,201	29,283
Loss on debt extinguishment
Equity in net income of subsidiary
Income before income taxes		1,203	27,129
Income tax expense (benefit)		(3,503)	5,665
Net income		4,706	21,464
Parent Guarantor: Holdings [Member] | Successor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Loss on debt extinguishment
Equity in net income of subsidiary	15,020
Income before income taxes	15,020
Income tax expense (benefit)
Net income	15,020
Parent Guarantor: Holdings [Member] | Predecessor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Equity in net income of subsidiary		4,706	21,464
Income before income taxes		4,706	21,464
Income tax expense (benefit)
Net income		4,706	21,464
Subsidiary Issuer: NPC [Member] | Successor [Member]
Condensed Consolidating Statements of Income
Total sales	1,048,923
Total costs and expenses	970,698
Operating income	78,225
Interest expense	46,691
Loss on debt extinguishment	14,227
Equity in net income of subsidiary
Income before income taxes	17,307
Income tax expense (benefit)	2,287
Net income	15,020
Subsidiary Issuer: NPC [Member] | Predecessor [Member]
Condensed Consolidating Statements of Income
Total sales		980,973	978,284
Total costs and expenses		954,569	921,872
Operating income		26,404	56,412
Interest expense		25,201	29,283
Equity in net income of subsidiary
Income before income taxes		1,203	27,129
Income tax expense (benefit)		(3,503)	5,665
Net income		4,706	21,464
Subsidiary Co-Issuer: NPC Op Co A [Member] | Successor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Equity in net income of subsidiary
Income before income taxes
Income tax expense (benefit)
Net income
Subsidiary Co-Issuer: NPC Op Co A [Member] | Predecessor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Equity in net income of subsidiary
Income before income taxes
Income tax expense (benefit)
Net income
Subsidiary Co-Issuer: NPC Op Co B [Member] | Successor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Equity in net income of subsidiary
Income before income taxes
Income tax expense (benefit)
Net income
Subsidiary Co-Issuer: NPC Op Co B [Member] | Predecessor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Equity in net income of subsidiary
Income before income taxes
Income tax expense (benefit)
Net income
Eliminations [Member] | Successor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Loss on debt extinguishment
Equity in net income of subsidiary	(15,020)
Income before income taxes	(15,020)
Income tax expense (benefit)
Net income	(15,020)
Eliminations [Member] | Predecessor [Member]
Condensed Consolidating Statements of Income
Total sales
Total costs and expenses
Operating income
Interest expense
Equity in net income of subsidiary		(4,706)	(21,464)
Income before income taxes		(4,706)	(21,464)
Income tax expense (benefit)
Net income		$ (4,706)	$ (21,464)