Other Balance Sheet Information (Tables)

9 Months Ended

Jun. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Accounts Receivable

The following is a summary of accounts receivable at June 30, 2022 and September 30, 2021 (in thousands):

	June 30,		September 30,
	2022		2021
Accounts receivable	$	154,600	$	124,195
Less allowance for expected credit losses		(4,326)		(4,318)
Accounts receivable, net	$	150,274	$	119,877

Summary of Inventories

The following is a summary of inventories at June 30, 2022 and September 30, 2021 (in thousands):

	June 30,		September 30,
	2022		2021
Inventories
Raw materials and purchased parts	$	35,594	$	27,644
Work-in-process		5,855		4,787
Finished goods		39,764		27,967
Total inventories	$	81,213	$	60,398

Product Warranty and Retrofit Activity on Gross Basis

The following is a summary of product warranty and retrofit activity on a gross basis for the three and nine months ended June 30, 2022 and 2021 (in thousands):

Activity -Three Months Ended June 30, 2022
Balance						Balance
March 31,						June 30,
2022		Accruals		Costs Incurred		2022
$	2,491	$	663	$	(630)	$	2,524
Activity -Three Months Ended June 30, 2021
Balance						Balance
March 31,						June 30,
2021		Accruals		Costs Incurred		2021
$	2,182	$	858	$	(703)	$	2,337
Activity -Nine Months Ended June 30, 2022
Balance						Balance
September 30,						June 30,
2021		Accruals		Costs Incurred		2022
$	2,330	$	1,875	$	(1,681)	$	2,524
Activity -Nine Months Ended June 30, 2021
Balance						Balance
September 30,						June 30,
2020		Accruals		Costs Incurred		2021
$	2,211	$	1,671	$	(1,545)	$	2,337