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Inventories
 6 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Inventories

6.   Inventories

Inventories consist of the following (in thousands):

 

 

 

March 31, 2020

 

 

September 30, 2019

 

Finished goods

 

$

16,940

 

 

$

17,967

 

Work in process

 

 

4,733

 

 

 

3,681

 

Raw materials

 

 

47,809

 

 

 

55,781

 

Obsolescence reserve

 

 

(34,144

)

 

 

(32,050

)

 

 

 

35,338

 

 

 

45,379

 

Less current portion

 

 

(18,488

)

 

 

(23,855

)

Non-current portion

 

$

16,850

 

 

$

21,524

 

 

Raw materials included semi-finished goods and component parts that totaled approximately $21.9 million and $25.2 million at March 31, 2020 and September 30, 2019, respectively.