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Other Balance Sheet Information | 9 Months Ended
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Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Other Balance Sheet Information | ​ ​ 10. Other Balance Sheet Information 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 | ​
​ ​ 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 | ​
​ ​ Reserves for excess and obsolete inventory were $4.1 million and $3.7 million, respectively, at June 30, 2022 and September 30, 2021. At June 30, 2022 and September 30, 2021, the Company had cumulative capitalized direct costs of $25.5 million and $22.7 million, respectively, associated with the development of software for its internal use. As of June 30, 2022, this balance included $7.5 million associated with software assets that are still in the development stage and not yet placed in service. During the three and nine months ended June 30, 2022, the Company capitalized direct costs of $1.2 million and $2.8 million, respectively, associated with the development of software for its internal use. The Company establishes reserves for estimated costs of product warranties based on historical information. Product warranty reserves are recorded at the time product revenue is recognized, and retrofit accruals are recorded at the time retrofit programs are established. The Company’s warranty obligation is affected by product failure rates, utilization levels, material usage, service delivery costs incurred in correcting a product failure and supplier warranties on parts delivered to the Company. 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):
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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
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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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