Property, Plant and Equipment

12 Months Ended

Sep. 30, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

7. Property, Plant and Equipment

Depreciation expense of property, plant and equipment was $9.7 million, $9.6 million and $8.6 million for 2015, 2014 and 2013, respectively.

The Company leases certain real property, equipment and machinery under non-cancelable operating leases. Rental expense under these operating leases was $5.2 million, $5.3 million and $5.0 million for 2015, 2014 and 2013, respectively. Future aggregate minimum lease payments under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of September 30, 2015, are:

(Dollars in thousands)
Years ending September 30:
2016		4,750
2017		3,565
2018		2,772
2019		2,007
2020 and thereafter		1,458
Total	$	14,552