Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2012 Successor	Sep. 30, 2012 Successor	Mar. 25, 2012 Predecessor	Sep. 30, 2011 Predecessor	Sep. 30, 2011 Predecessor
Statement of Income and Comprehensive Income
Net income	$ 36,619	$ 47,388	$ 40,482	$ 35,425	$ 121,256
Other comprehensive income (loss), net of tax:
Reclassification of unrealized loss on interest rate hedges into earnings	0	0	2,515	3,320	9,802
Change in fair value of interest rate hedges	0	0	0	28	(761)
Reclassification of prior service cost (credit) relating to other postretirement benefits into earnings	0	0	398	(379)	(1,135)
Total other comprehensive income, net of tax	0	0	2,913	2,969	7,906
Comprehensive income	$ 36,619	$ 47,388	$ 43,395	$ 38,394	$ 129,162