Pension Plans (Tables)

6 Months Ended

Mar. 31, 2018

Pension Plans

Components of net periodic pension cost (benefit)

The components of net periodic pension cost (benefit) are as follows (in thousands):

	Six Months Ended				Three Months Ended
	March 31,				March 31,
	2018		2017		2018		2017
Service cost	$	306	$	302	$	155	$	151
Interest cost		3,781		3,518		1,901		1,759
Expected return on plan assets		(7,095)		(6,400)		(3,570)		(3,201)
Amortization of actuarial loss		1,398		1,822		706		912
Administrative expenses		220		94		110		47
Net pension cost (benefit)	$	(1,390)	$	(664)	$	(698)	$	(332)