Inventory (Tables)

9 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Schedule Of Inventory Current [Table Text Block]

	June 30,		September 30,
	2018		2017
Raw materials	$	4,175	$	4,104
Work in process		4,396		3,731
Finished goods		1,608		1,692
Parts and supplies		8,538		7,396
Total inventories	$	18,717	$	16,923