Other Balance Sheet Information (Tables)

3 Months Ended

Dec. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Accounts Receivable

The following is a summary of accounts receivable at December 31, 2022 and September 30, 2022 (in thousands):

	December 31,		September 30,
	2022		2022
Accounts receivable	$	208,862	$	168,920
Less allowance for expected credit losses		(6,942)		(5,162)
Accounts receivable, net	$	201,920	$	163,758

Allowance for Doubtful Accounts Activity

The allowance for expected credit losses for the fiscal years ended December 31, 2022 and September 30, 2022 (in thousands):

	Balance at				Reversals of		Balance at
	Beginning of				Bad Debt		End of
Description	Period		Provisions		Expense		Period
Fiscal year 2023 allowance for expected credit losses	$	5,162		2,716		(936)	$	6,942
Fiscal year 2022 allowance for expected credit losses		4,318		3,020		(2,924)		4,414

Summary of Inventories

The following is a summary of inventories at December 31, 2022 and September 30, 2022 (in thousands):

	December 31,		September 30,
	2022		2022
Inventories
Raw materials and purchased parts	$	80,269	$	39,685
Work-in-process		4,740		4,816
Finished goods		60,930		41,043
Total inventories	$	145,939	$	85,544

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 months ended December 31, 2022 and 2021 (in thousands):

Activity -Three Months Ended December 31, 2022
Balance							Balance
September 30,							December 31,
2022		Adjustments for Acquisitions	Accruals		Costs Incurred		2022
$	2,890	2,303	$	307	$	(321)	$	5,179
Activity -Three Months Ended December 31, 2021
Balance							Balance
September 30,							December 31,
2021		Adjustments for Acquisitions	Accruals		Costs Incurred		2021
$	2,330	—	$	673	$	(660)	$	2,342