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Inventories (Tables) | 12 Months Ended
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Sep. 30, 2018
Inventory Disclosure [Abstract] |
Inventories | Inventories consisted of the following (in thousands):
|  | AS OF SEPTEMBER 30, |
|  | 2018 |  |  | 2017 |
Finished goods |  | $ | 18,802 |  |  | $ | 33,690 |
Work in process |  |  | 7,926 |  |  |  | 2,512 |
Raw material |  |  | 54,290 |  |  |  | 70,099 |
Obsolescence reserve |  |  | (30,551 | ) |  |  | (29,614 | )
|  |  | 50,467 |  |  |  | 76,687 |
Less current portion |  |  | 18,812 |  |  |  | 20,752 |
Non-current portion |  | $ | 31,655 |  |  | $ | 55,935 |

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