Postretirement and Other Employee Benefits (Tables)

9 Months Ended

May 31, 2013

Compensation And Retirement Disclosure [Abstract]

Net Periodic Benefit Cost for Pension Plans

The following table provides information about net periodic benefit cost for the pension plans during the three months and nine months ended May 31, 2013 and 2012 (in thousands):

	Three months ended						Nine months ended
	May 31, 2013			May 31, 2012			May 31, 2013			May 31, 2012
Service cost	$	492		$	370		$	1,518		$	1,060
Interest cost		1,848			1,986			5,686			5,609
Expected long-term return on plan assets		(1,667	)		(1,650	)		(5,136	)		(4,524	)
Amortization of prior service cost		(6	)		(7	)		(19	)		(21	)
Recognized actuarial loss		670			308			2,037			913
Net periodic benefit cost	$	1,337		$	1,007		$	4,086		$	3,037