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Inventories (Tables)
 3 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Components of Inventory The components of inventory were as follows (in thousands):

 

 

 

December 31,

2018

 

 

September 30,

2018

 

Product

 

$

54,631

 

 

$

34,618

 

Parts and equipment

 

 

21,934

 

 

 

21,759

 

Total inventory

 

$

76,565

 

 

$

56,377