Inventories (Tables)

12 Months Ended

Sep. 30, 2021

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following (in thousands):

	AS OF SEPTEMBER 30,
	2021			2020
Finished goods	$	19,368		$	20,798
Work in process		8,247			984
Raw materials		43,620			47,041
Obsolescence reserve (net realizable value adjustment)		(36,936	)		(34,960	)
		34,299			33,863
Less current portion		16,196			16,933
Non-current portion	$	18,103		$	16,930