Employee Benefit Plans

9 Months Ended

Jun. 30, 2018

Employee Benefit Plans

The Company maintains multiple employee benefit plans.

Certain of the Company’s employees in the UK were participants in a Siemens defined benefit plan established for employees of a UK-based operation acquired by Siemens in 2004. The plan was frozen with respect to future service credits for active employees, however the benefit formula recognized future compensation increases. The Company agreed to establish a replacement defined benefit plan, with the assets of the Siemens scheme transferring to the new scheme on April 1, 2015.

The Company’s employees in Germany also participate in a defined benefit plan. Assets equaling the plan’s accumulated benefit obligation were transferred to a German defined benefit plan sponsored by the Company upon the acquisition of EWT from Siemens. The German entity also sponsors a defined benefit plan for a small group of employees located in France.

Pension expense for the German and UK plans were as follows:



	Three Months Ended June 30,
	2017		2018
Service cost	$	267	$	230
Interest cost	82		116
Expected return on plan assets	(40)		(30)
Amortization of actuarial losses	188		75
Pension expense for defined benefit plans	$	497	$	391

	Nine Months Ended June 30,
	2017		2018
Service cost	$	802	$	705
Interest cost	246		357
Expected return on plan assets	(121)		(93)
Amortization of actuarial losses	563		230
Pension expense for defined benefit plans	$	1,490	$	1,199