Retirement and Profit Sharing Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Retirement and Profit Sharing Plans [Abstract]
Employer matching contributions (in hundredths)	50.00%
Maximum employee's pretax contribution that can be matched (in hundredths)	6.00%
Employer matching contributions	$ 1.8	$ 1.8	$ 1.8

The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement.

No definition available.

Name:	us-gaap_DeferredCompensationArrangementWithIndividualEmployerContribution
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration