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Inventories (Tables) | 6 Months Ended
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Mar. 31, 2020
Inventory Disclosure [Abstract] |
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 |

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