Inventories

12 Months Ended

Sep. 30, 2021

Inventory Disclosure [Abstract]

Inventories

8. 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

Inventory obsolescence expense totaled approximately $3.0 million and $4.7 million during fiscal years 2021 and 2020, respectively.  Raw materials include semi-finished goods and component parts that totaled approximately $22.7 million and $24.3 million at September 30, 2021 and 2020, respectively.  Finished goods and raw materials that totaled $23.3 million and $21.8 million were fully reserved at September 30, 2021 and 2020, respectively.