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v3.23.1

Other Balance Sheet Information (Tables) | 6 Months Ended
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Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Summary of Accounts Receivable | The following is a summary of accounts receivable at March 31, 2023 and September 30, 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | September 30, | ​
​ |  | 2023 |  | 2022 |
Accounts receivable | ​ | $ | 175,656 | ​ | $ | 168,920 | ​
Less allowance for expected credit losses | ​ |  | (7,696) | ​ |  | (5,162) | ​
Accounts receivable, net | ​ | $ | 167,960 | ​ | $ | 163,758 | ​
​
Allowance for Doubtful Accounts Activity | The allowance for expected credit losses for the six months ended March 31, 2023 and fiscal year ended September 30, 2022 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | ​ | ​ | ​ | Reversals of | ​ | Write- | ​ | Balance at
​ | ​ | Beginning of | ​ | ​ | ​ | ​ | Bad Debt | ​ | offs and | ​ | End of
Description |  | Period |  | Provisions |  | Expense |  | Adjustments |  | Period
Six months ended March 31, 2023 allowance for expected credit losses | ​ | $ | 5,162 | ​ | ​ | 4,858 | ​ | ​ | (2,254) | ​ | $ | (70) | ​ | $ | 7,696
Fiscal year 2022 allowance for expected credit losses | ​ |  | 4,318 | ​ | ​ | 3,020 | ​ | ​ | (2,510) | ​ | $ | (414) | ​ | ​ | 4,414
​
Summary of Inventories | The following is a summary of inventories at March 31, 2023 and September 30, 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, |  | September 30, | ​
​ |  | 2023 |  | 2022 |
Inventories |  | ​ |  |  |  |  |
Raw materials and purchased parts |  | $ | 71,912 |  | $ | 39,685 | ​
Work-in-process |  | ​ | 5,065 |  | ​ | 4,816 | ​
Finished goods |  | ​ | 73,750 |  | ​ | 41,043 | ​
Total inventories |  | $ | 150,727 |  | $ | 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 and six months ended March 31, 2023 and 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Activity -Three Months Ended March 31, 2023
Balance | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Balance
December 31, | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | March 31,
2022 | ​ | ​ | Adjustments for Acquisitions | ​ | Accruals | ​ | Costs Incurred | ​ | 2023
$ | 5,179 | ​ | ​ | — | ​ | $ | 1,222 | ​ | $ | (1,021) | ​ | $ | 5,380
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Activity -Three Months Ended March 31, 2022
Balance | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Balance
December 31, | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | March 31,
2021 | ​ | ​ | Adjustments for Acquisitions | ​ | Accruals | ​ | Costs Incurred | ​ | 2022
$ | 2,342 | ​ | ​ | — | ​ | $ | 539 | ​ | $ | (390) | ​ | $ | 2,491
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Activity -Six Months Ended March 31, 2023
Balance | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Balance
September 30, | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | March 31,
2022 | ​ | ​ | Adjustments for Acquisitions | ​ | Accruals | ​ | Costs Incurred | ​ | 2023
$ | 2,890 | ​ | ​ | 2,303 | ​ | $ | 1,529 | ​ | $ | (1,342) | ​ | $ | 5,380
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Activity -Six Months Ended March 31, 2022
Balance | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Balance
September 30, | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | March 31,
2021 | ​ | ​ | Adjustments for Acquisitions | ​ | Accruals | ​ | Costs Incurred | ​ | 2022
$ | 2,330 | ​ | ​ | — | ​ | $ | 1,212 | ​ | $ | (1,051) | ​ | $ | 2,491

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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126907703&loc=d3e12565-110249 + Details
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