Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		0 Months Ended			6 Months Ended					1 Months Ended	6 Months Ended			0 Months Ended			6 Months Ended				0 Months Ended			6 Months Ended					0 Months Ended		1 Months Ended	6 Months Ended
	Mar. 31, 2013	Sep. 30, 2012	Mar. 21, 2013 Term loan B-2	Mar. 31, 2013 Term loan B-2	Sep. 30, 2012 Term loan B-2	Mar. 31, 2013 Term loan B-2 Eurodollar (LIBOR)	Mar. 31, 2013 Term loan B-2 Base rate	Mar. 31, 2013 Revolving credit facility	Mar. 01, 2011 Revolving credit facility	Oct. 02, 2010 Revolving credit facility	Nov. 30, 2012 Revolving credit facility Balance Bar Company	Mar. 31, 2013 Revolving credit facility Balance Bar Company	Mar. 31, 2013 Revolving credit facility Eurodollar (LIBOR)	Mar. 31, 2013 Revolving credit facility Base rate	Oct. 02, 2010 Notes	Mar. 31, 2013 Notes	Sep. 30, 2012 Notes	Mar. 31, 2013 Notes On or after October 1, 2014	Mar. 31, 2013 Notes On or after October 1, 2015	Mar. 31, 2013 Notes On and after October 1, 2016 and thereafter	Mar. 31, 2013 Notes Prior to October 1, 2014	Mar. 21, 2013 Term loan B-1	Dec. 30, 2011 Term loan B-1	Mar. 01, 2011 Term loan B-1	Mar. 31, 2013 Term loan B-1 Eurodollar (LIBOR)	Mar. 31, 2013 Term loan B-1 Base rate	Oct. 02, 2010 Term loan A	Oct. 02, 2010 Term loan B	Oct. 11, 2012 Holdco Notes	Oct. 17, 2012 Holdco Notes Holdings	Oct. 11, 2012 Holdco Notes Holdings	Oct. 31, 2012 Holdco Notes Holdings	Mar. 31, 2013 Holdco Notes Holdings	Mar. 31, 2013 Holdco Notes Holdings Equal or exceed 75%, but less than 100%	Mar. 31, 2013 Holdco Notes Holdings Equal or exceed 50%, but less than 75%	Mar. 31, 2013 Holdco Notes Holdings Equal or exceed 25%, but less than 50%	Mar. 31, 2013 Holdco Notes Minimum Holdings Equal or exceed 75%, but less than 100%	Mar. 31, 2013 Holdco Notes Minimum Holdings Equal or exceed 50%, but less than 75%	Mar. 31, 2013 Holdco Notes Minimum Holdings Equal or exceed 25%, but less than 50%	Mar. 31, 2013 Holdco Notes Maximum Holdings Equal or exceed 75%, but less than 100%	Mar. 31, 2013 Holdco Notes Maximum Holdings Equal or exceed 50%, but less than 75%	Mar. 31, 2013 Holdco Notes Maximum Holdings Equal or exceed 25%, but less than 50%	Mar. 31, 2013 Holdco Notes Maximum Holdings Less than 25%
Long-Term Debt
Long-term debt, gross	$ 2,182,500	$ 2,157,500		$ 1,507,500	$ 1,507,500			$ 25,000								$ 650,000	$ 650,000
Total long-term debt	2,182,500	2,157,500
Face amount of debt			1,507,500																					1,750,000			250,000	1,500,000
Portion of excess cash flow (as defined) as part of additional prepayments on term loan (as a percent)				50.00%
Borrowing capacity									200,000	250,000
Reference rate for variable interest rate						Eurodollar (LIBOR)	Base rate						Eurodollar (LIBOR)	Base rate											Eurodollar (LIBOR)	Base rate
Floor for reference rate (as a percent)						1.00%	2.00%																		1.00%	2.00%
Margin rate over reference rate (as a percent)						2.50%	1.50%						3.25%	2.25%											3.25%	2.25%
Write off deferred financing cost			4,232																				9,289
Call premium on term loan	(15,075)		13,924																			1,151
Financing costs capitalized			15,190																										6,121
Prepayment penalty payable (as a percent)	1.00%
Period after Second Refinancing Date when prepayment penalty becomes payable	1 year
Future principal payments																							225,000
Debt issued															650,000															550,000
Cash interest rate (as a percent)																														7.75%
PIK interest (as a percent)																														8.50%
Cash on hand from Company used to pay transaction fees and expenses and a dividend																														200,000
Dividend paid																															193,956	722,000
Increase in the general restricted payments basket																															50,000
Interest rate on debt instrument (as a percent)															9.00%	9.00%
Additional borrowings of senior credit facilities to finance the acquisition											80,000
Repayment of senior credit facilities												$ 55,000
Unused line fee percentage								0.50%
Fronting fee Percentage								0.25%
Redemption price as a percentage of principal amount																		104.50%	102.25%	100.00%	100.00%
Applicable amount for interest period expressed as a percentage of the aggregate amount of cash interest																																					75.00%	50.00%	25.00%	100.00%	75.00%	50.00%	25.00%
Percentage of outstanding principal amount in which interest is payable by increasing the principal amount of outstanding notes or by issuing PIK Notes equal to such interest																																		25.00%
Percentage of outstanding principal amount in which interest is payable in kind																																			50.00%	75.00%
Percentage of outstanding principal amount in which interest is payable in cash																																		75.00%	50.00%	25.00%
Period to file Registration Statement to offer to exchange outstanding notes for principal amount of exchange notes in registered offering																																	270 days
Period to consummate exchange offer																																	360 days