Pensions and Other Postretirement Benefits (Tables)

6 Months Ended

Feb. 28, 2017

Pensions and Other Postretirement Benefits

Schedule of components of net periodic benefit cost

	Three Months Ended				Six Months Ended
	February 28, 2017		February 29, 2016		February 28, 2017		February 29, 2016
Components of net periodic benefit cost
Service cost	$	72	$	74	$	144	$	148
Interest cost		170		182		340		364
Expected return on plan assets		(132)		(129)		(264)		(258)
Amortization of prior service cost		1		1		2		2
Amortization of accumulated loss		224		143		448		286
Net periodic benefit cost	$	335	$	271	$	670	$	542