Postretirement and Other Employee Benefits (Tables)

6 Months Ended

Feb. 28, 2017

Postretirement and Other Employee Benefits [Abstract]

Information about 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 six months ended February 28, 2017 and February 29, 2016 (in thousands):
			Three months ended				Six months ended
			February 28,		February 29,		February 28,		February 29,
			2017		2016		2017		2016
	Service cost		$	253	$	218	$	512	$	440
	Interest cost			732		1,217		1,478		2,485
	Expected long-term return on plan assets			(1,109)		(1,397)		(2,238)		(2,860)
	Recognized actuarial loss			467		260		943		526
	Amortization of prior service credit			(33)		(34)		(67)		(69)
	Net periodic benefit cost		$	310	$	264	$	628	$	522