Commitments and Contingencies

12 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

14.

Commitments and Contingencies

The Company leases certain real property, equipment and machinery under non-cancelable operating leases. Rental expense under these operating leases was $6.9 million, $6.8 million and $6.0 million for 2018, 2017 and 2016, 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, 2018, are:

(Dollars in thousands)
Years ending September 30:
2019	$	6,702
2020		5,428
2021		3,540
2022		2,822
2023 and thereafter		3,467
Total	$	21,959

At September 30, 2018, the Company had $7.8 million in letters of credit outstanding as guarantees of contract performance. As a normal incident of the businesses in which the Company is engaged, various claims, charges and litigation are asserted or commenced from time to time against the Company. Additionally, the Company is currently involved in various stages of investigation and remediation relating to environmental matters. It is the opinion of Management that the aggregate costs involved in the resolution of these matters, and final judgments, if any, which might be rendered against the Company are adequately accrued, are covered by insurance or are not likely to have a material adverse effect on the Company’s results from continuing operations, capital expenditures or competitive position.