Inventories (Tables)

6 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories comprise the following:

	March 31, 2017		September 30, 2016		March 31, 2016
Gas Utility natural gas	$	2,394	$	29,223	$	3,786
Materials, supplies and other	14,780		13,117		12,899
Total inventories	$	17,174	$	42,340	$	16,685