Inventories (Tables)

6 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories comprise the following:

	March 31, 2019		September 30, 2018		March 31, 2018
Gas Utility natural gas	$	3,396	$	37,287	$	3,459
Materials, supplies and other	16,546		15,126		16,258
Total inventories	$	19,942	$	52,413	$	19,717