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Inventories (Tables)
6 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories consist of:
 
March 31, 
 2018
 
September 30, 
 2017
Raw materials and supplies
$
5,515

 
$
6,108

Work-in-process
6,808

 
7,650

Finished goods
6,551

 
6,623

Total inventories
$
18,874

 
$
20,381