Guarantor/Non-Guarantor Financial Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	1 Months Ended				1 Months Ended
	Jun. 25, 2011	Jun. 30, 2011 6.625% senior unsecured notes due in April 2020	Apr. 30, 2010 6.625% senior unsecured notes due in April 2020	Jun. 25, 2011 6.625% senior unsecured notes due in April 2020	Apr. 08, 2010 6.625% senior unsecured notes due in April 2020	Jun. 30, 2011 6.875% Senior Subordinated Notes	May 31, 2004 6.875% Senior Subordinated Notes	Jun. 25, 2011 6.875% Senior Subordinated Notes	May 04, 2004 6.875% Senior Subordinated Notes
Long-term debt:
Face amount of debt issued to finance acquisition	$ 150,000	$ 150,000	$ 300,000				$ 150,000
Interest rate on notes (as a percent)				6.625%	6.625%			6.875%	6.875%
Redemption price of debt instrument (as a percent)						101.46%
Parent company's percentage ownership of Guarantors (as a percent)	100.00%