Inventories (Tables)

9 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories comprise the following:

	June 30, 2017		September 30, 2016		June 30, 2016
Gas Utility natural gas	$	21,826	$	29,223	$	13,561
Materials, supplies and other	15,303		13,117		13,448
Total inventories	$	37,129	$	42,340	$	27,009