Pension and Postretirement Benefit Plans (Tables)

9 Months Ended

Mar. 31, 2013

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The following table presents the components of net periodic benefit costs:

	Three Months						Nine Months
Periods ended March 31,	2013			2012			2013			2012
(In thousands)
Pension benefits
Service cost	$	2,525		$	2,359		$	7,575		$	7,077
Interest cost	1,228			1,497			3,684			4,491
Expected return on plan assets	(2,366		)	(2,504		)	(7,098		)	(7,512		)
Prior service cost amortization	90			92			270			276
Actuarial loss amortization	813			401			2,438			1,203
Net periodic benefit costs	$	2,290		$	1,845		$	6,869		$	5,535
Postretirement benefits
Service cost	$	94		$	113		$	282		$	339
Interest cost	153			240			459			720
Prior service cost amortization	(134		)	(134		)	(402		)	(402		)
Actuarial loss amortization	—			15			—			45
Net periodic benefit costs	$	113		$	234		$	339		$	702