Inventories (Tables)

12 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories comprise the following at September 30:

	2016		2015
Gas Utility natural gas	$	29,223	$	37,510
Materials, supplies and other	13,117		14,206
Total inventories	$	42,340	$	51,716