Pension and Postretirement Benefit Plans (Other) (Details) (Key Officers and Retirees [Member], Split-Dollar Life Insurance Arrangements [Member], USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Key Officers and Retirees [Member] | Split-Dollar Life Insurance Arrangements [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Net periodic pension cost	$ 224,000	$ 189,000	$ 172,000
Accrued liability	$ 3,600,000	$ 3,200,000