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Inventories (Tables)
6 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consist of:
 
March 31, 
 2019
 
September 30, 
 2018
Raw materials and supplies
$
3,773

 
$
6,202

Work-in-process
3,669

 
6,626

Finished goods
2,900

 
5,441

Total inventories
$
10,342

 
$
18,269