Pension and Post-Retirement Benefit Plans

9 Months Ended

May 31, 2013

Compensation And Retirement Disclosure [Abstract]

Pension and Post-Retirement Benefit Plans

9—PENSION AND POST-RETIREMENT BENEFIT PLANS

The components of the net periodic pension and post-retirement benefit costs are as follows:

	Three months ended						Nine months ended
	May 31,						May 31,
Defined benefit pension plans	2013			2012			2013			2012
	(In thousands)
Service cost	$	486		$	380		$	1,458		$	1,140
Interest cost		662			682			1,986			2,046
Expected return on plan assets		(717	)		(729	)		(2,151	)		(2,187	)
Amortization of prior service cost		60			57			180			171
Amortization of actuarial losses		483			193			1,449			579
Net periodic benefit cost	$	974		$	583		$	2,922		$	1,749
	Three months ended						Nine months ended
	May 31,						May 31,
Post-retirement health care plans	2013			2012			2013			2012
	(In thousands)
Service cost	$	59		$	57		$	177		$	171
Interest cost		215			243			645			729
Amortization of prior service cost		(38	)		(38	)		(114	)		(114	)
Amortization of actuarial losses		67			—			201			—
Net periodic benefit cost	$	303		$	262		$	909		$	786