Benefit Plans (Tables)

12 Months Ended

Sep. 30, 2017

Retirement Benefits [Abstract]

Schedule of contributions to multi-employer pension plans

Below is a table of our contributions to multi-employer pension plans:

	Years Ended September 30,
	2017		2016		2015
	(dollars in thousands)
Pensioenfonds Metaal en Techniek (PMT)	$	805	$	796	$	805
Other plans	188		187		158
Total	$	993	$	983	$	963