Inventory (Tables)

12 Months Ended

Sep. 30, 2018

InventoryDisclosureAbstract

Schedule Of Inventory Current [Table Text Block]

	September 30,
	2018		2017
Raw materials	$	4,453	$	4,104
Work in process		5,168		3,731
Finished goods		1,746		1,692
Parts and supplies		9,599		7,396
Total inventories	$	20,966	$	16,923