Benefit Plans (Details Textuals) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011
Benefit Plans (Textuals) [Abstract]
Discount Rate		3.50%	4.50%
Actuarial loss on remeasurement, net of income tax	$ 302
Actuarial Loss on Remeasurement of Postemployment Benefits, Gross	492
Tax effect of actuarial loss on remeasurement	190
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	8,860
Tax Effect on Other Comprehensive Income, Impact of Reduction in Postemployment Benefit Liability Due to the Plan Curtailment	3,411
Impact of reduction in postemployment benefit liability (as future forecasted salary increases will not be realized) due to the plan curtailment, net of income tax	5,449
Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, before Tax	3,117
Tax Effect on Other Comprehensive Income, Reclassification of Prior Service Cost into Selling, Distribution and Administrative Expense Upon Plan Curtailment	1,200
Pension Benefits [Member]
Benefit Plans (Textuals) [Abstract]
Contribution to benefit plan	570
Expected contribution to benefit plans for remainder of fiscal year	3,650
Retiree Health Care Benefits [Member]
Benefit Plans (Textuals) [Abstract]
Contribution to benefit plan	139
Expected contribution to benefit plans for remainder of fiscal year	$ 100