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Note 11 - Supplementary Balance Sheet Information

12 Months Ended

Sep. 30, 2025

Supplemental Balance Sheet Disclosures [Text Block]

11. Supplementary Balance Sheet Information

The following is a summary of accounts receivable at September 30, 2025 and 2024 (in thousands):

	*September 30,*
	*2025*			*2024*
Accounts receivable	$	146,830		$	159,521
Less allowance for expected credit losses		(4,649	)		(5,349	)
Accounts receivable, net	$	142,181		$	154,172

The allowance for expected credit losses for the fiscal years ended September 30, 2025, 2024 and 2023 is as follows (in thousands):

	*Year Ended September 30,*
	*2025*			*2024*			*2023*

Balance at beginning of period	$	5,349		$	7,745		$	5,162
Provisions		3,745			7,250			8,849
Payments received		(3,872	)		(8,352	)		(6,196	)
Write-offs and adjustments		(573	)		(1,294	)		(70	)
Balance at end of period	$	4,649		$	5,349		$	7,745

The following is a summary of inventories at September 30, 2025 and 2024 (in thousands):

	*September 30,*
	*2025*		*2024*

Raw materials and purchased parts	$	33,319	$	27,461
Work-in-process		5,050		7,739
Finished goods		36,587		36,120
Total inventories	$	74,956	$	71,320

The activity for excess and obsolete inventory reserves is as follows for the fiscal years ended September 30, 2025, 2024 and 2023 (in thousands):

	*Year Ended September 30,*
	*2025*			*2024*			*2023*

Balance at beginning of period	$	6,067		$	4,732		$	4,082
Provisions		5,421			4,018			1,844
Inventory disposals and adjustments		(5,620	)		(2,683	)		(1,194	)
Balance at end of period	$	5,868		$	6,067		$	4,732

The activity for valuation allowance for deferred tax assets is as follows for the fiscal years ended September 30, 2025, 2024 and 2023 (in thousands):

	*Year Ended September 30,*
	*2025*		*2024*		*2023*

Balance at beginning of period	$	44,222	$	7,214	$	5,927
Charge to income tax provision (benefit)		36,475		31,793		(7	)
Charged to other accounts		21,324		5,215		1,294
Balance at end of period	$	102,021	$	44,222	$	7,214

The following is a summary of product warranty and retrofit activity on a gross basis for the fiscal years ended September 30, 2025, 2024 and 2023 (in thousands):

	*Year Ended September 30,*
	*2025*			*2024*			*2023*

Balance at beginning of period	$	5,213		$	3,974		$	2,890
Accruals for warranties during the year		927			2,741			2,564
Costs incurred during the year		(1,427	)		(1,502	)		(1,480	)
Balance at end of period	$	4,713		$	5,213		$	3,974