Note 8 - Supplementary Balance Sheet Information

3 Months Ended

Dec. 31, 2024

Notes to Financial Statements

Supplemental Balance Sheet Disclosures [Text Block]

8. Supplementary Balance Sheet Information

Inventories

The following is a summary of inventories at December 31, 2024 and  September 30, 2024 (in thousands):

	December 31,		September 30,
	2024		2024
Raw materials and purchased parts	$	39,916	$	34,134
Work-in-process		7,585		8,402
Finished goods		33,505		36,387
Total inventories	$	81,006	$	78,923

Inventory reserves were $7.2 million and $6.1 million, respectively, at December 31, 2024 and  September 30, 2024.

Warranty and Retrofit Costs

The following is a summary of product and warranty retrofit activity for the three months ended December 31, 2024 and 2023 (in thousands):

	Three Months Ended December 31,
	2024			2023
Balance at beginning of period	$	5,213		$	3,974
Accruals for warranties during the period		187			903
Costs incurred during the period		(427	)		(320	)
Balance at end of period	$	4,973		$	4,557