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Inventories (Tables)
 6 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Inventories

Inventories consist of the following (in thousands):

 

 

 

March 31, 2019

 

 

September 30, 2018

 

Finished goods

 

$

18,750

 

 

$

18,802

 

Work in process

 

 

3,745

 

 

 

7,926

 

Raw material

 

 

58,570

 

 

 

54,290

 

Obsolescence reserve

 

 

(31,503

)

 

 

(30,551

)

 

 

 

49,562

 

 

 

50,467

 

Less current portion

 

 

(15,525

)

 

 

(18,812

)

Non-current portion

 

$

34,037

 

 

$

31,655