Inventories (Tables)

3 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories comprise the following:

	December 31, 2016		September 30, 2016		December 31, 2015
Gas Utility natural gas	$	25,777	$	29,223	$	35,923
Materials, supplies and other	13,916		13,117		13,442
Total inventories	$	39,693	$	42,340	$	49,365