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Note 11 - Supplementary Balance Sheet Information

12 Months Ended

Sep. 30, 2024

Supplemental Balance Sheet Disclosures [Text Block]

11. Supplementary Balance Sheet Information

The following is a summary of accounts receivable at September 30, 2024 and 2023 (in thousands):

	*September 30,*
	*2024*			*2023*
Accounts receivable	$	179,269		$	164,592
Less allowance for expected credit losses		(6,558	)		(8,057	)
Accounts receivable, net	$	172,711		$	156,535

The allowance for expected credit losses for the fiscal years ended September 30, 2024, 2023 and 2022 is as follows (in thousands):

	*Year Ended September 30,*
	*2024*			*2023*			*2022*

Balance at beginning of period	$	8,057		$	5,162		$	4,318
Provisions		7,250			8,849			3,536
Payments received		(7,455	)		(5,884	)		(2,278	)
Write-offs and adjustments		(1,294	)		(70	)		(414	)
Balance at end of period	$	6,558		$	8,057		$	5,162

The following is a summary of inventories at September 30, 2024 and 2023 (in thousands):

	*September 30,*
	*2024*		*2023*

Raw materials and purchased parts	$	57,230	$	59,861
Work-in-process		9,118		11,400
Finished goods		48,908		56,937
Total inventories	$	115,256	$	128,198

The activity for excess and obsolete inventory reserves is as follows for the fiscal years ended September 30, 2024, 2023 and 2022 (in thousands):

	*Year Ended September 30,*
	*2024*			*2023*			*2022*

Balance at beginning of period	$	4,991		$	4,082		$	3,681
Provisions		8,186			3,324			1,752
Inventory disposals and adjustments		(3,022	)		(2,415	)		(1,351	)
Balance at end of period	$	10,155		$	4,991		$	4,082

The activity for valuation allowance for deferred tax assets is as follows for the fiscal years ended September 30, 2024, 2023 and 2022 (in thousands):

	*Year Ended September 30,*
	*2024*		*2023*		*2022*

Balance at beginning of period	$	8,348	$	5,927	$	8,592
Charge to income tax provision (benefit)		37,677		1,137		1,337
Charged to other accounts		1,840		1,284		(4,002	)
Balance at end of period	$	47,865	$	8,348	$	5,927

The following is a summary of product warranty and retrofit activity on a gross basis for the fiscal years ended September 30, 2024, 2023 and 2022 (in thousands):

	*Year Ended September 30,*
	*2024*			*2023*			*2022*

Balance at beginning of period	$	10,223		$	2,890		$	2,330
Adjustments for acquisitions and divestitures		—			2,475			254
Accruals for warranties during the year		2,736			8,198			2,438
Costs incurred during the year		(2,830	)		(3,340	)		(2,132	)
Balance at end of period	$	10,129		$	10,223		$	2,890