Retirement and Profit Sharing Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Retirement and Profit Sharing Plans
Employer matching contributions (as a percent)	50.00%
Maximum employee's pretax contribution that can be matched (as a percent)	6.00%
Employer matching contributions	$ 1.9	$ 1.8	$ 1.8

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration