Inventory (Tables)

6 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Schedule Of Inventory Current [Table Text Block]

	March 31,		September 30,
	2017		2016
Raw materials	$	3,099	$	2,538
Work in process		5,517		4,158
Finished goods		1,565		1,558
Parts and supplies		8,130		4,982
Total inventories	$	18,311	$	13,236