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Inventories (Tables)
12 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories at September 30 consist of:
 
2019
 
2018
Raw materials and supplies
$
4,512

 
$
6,202

Work-in-process
2,721

 
6,626

Finished goods
3,276

 
5,441

Total inventories
$
10,509

 
$
18,269