Derivative Instruments Derivative Instruments (Details) (USD $)	3 Months Ended		12 Months Ended			0 Months Ended										12 Months Ended		12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2012 Interest Rate Swap [Member]	Jun. 30, 2011 Interest Rate Swap [Member] Derivatives	Apr. 30, 2011 Interest Rate Swap [Member] Derivatives	Jun. 30, 2011 Interest Rate Swap [Member] Swap, Interest Rate Swaps, Prior Periods [Member]	Jun. 30, 2011 Interest Rate Swap [Member] Swap, Interest Rate Swaps, Maturity Fiscal 2013 [Member]	Jun. 30, 2011 Interest Rate Swap [Member] Swap, Interest Rate Swaps, Maturity Fiscal 2015 [Member] Derivatives	Jun. 30, 2012 Revolving Credit Facility [Member]	Mar. 30, 2012 Revolving Credit Facility [Member]	Dec. 07, 2010 Revolving Credit Facility [Member]	Mar. 30, 2012 Cedit Agreement [Member] Term Loan [Member]	Jun. 30, 2012 Maximum [Member] Cedit Agreement [Member] Revolving Credit Facility [Member]	Dec. 07, 2010 Maximum [Member] Cedit Agreement [Member] Revolving Credit Facility [Member]	Jun. 30, 2012 Maximum [Member] Cedit Agreement [Member] Term Loan [Member]	Mar. 30, 2012 Maximum [Member] Cedit Agreement [Member] Term Loan [Member]
Derivative [Line Items]
Number of Interest Rate Derivatives Held							2	3			2
Derivative, Notional Amount							$ 950,000,000		$ 375,000,000	$ 325,000,000	$ 312,500,000
Debt Instrument, Interest Rate, Effective Percentage										9.44%	6.26%
Interest Rate Derivative Liabilities, at Fair Value						30,100,000	19,800,000
Line of Credit Facility, Maximum Borrowing Capacity												328,300,000	348,600,000	442,500,000	350,000,000
Debt Instrument, Description of Variable Rate Basis																LIBOR		LIBOR
Stated Percentage																	0.50%		1.25%
Debt Instrument, Basis Spread on Variable Rate																4.00%	3.00%	4.00%	7.00%
Periodic Revaluation		2,500,000
Revaluation Loss	100,000
Net change in unrecognized loss on interest rate swaps, net of tax			(13,646,000)	(14,901,000)	(10,881,000)	17,600,000
Estimated Net Transfer, Current			$ 7,100,000