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Revenue Recognition (Tables) | 9 Months Ended
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Jun. 30, 2022
Revenue from Contract with Customer [Abstract] |
Summary of Revenues Classified by Major Geographic Region | Revenues, classified by the major geographic region in which our customers are located, for the three and nine months ended June 30, 2022 and 2021 (dollars in thousands):
|  | Three Months Ended June 30, |  |  | Nine Months Ended June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 23,317 |  |  | $ | 31,632 |  |  | $ | 80,401 |  |  | $ | 100,507 |
Other Americas |  |  | 20 |  |  |  | 37 |  |  |  | 57 |  |  |  | 105 |
Germany |  |  | 18,880 |  |  |  | 24,519 |  |  |  | 61,520 |  |  |  | 81,230 |
Other Europe, Middle East and Africa |  |  | 4,561 |  |  |  | 10,574 |  |  |  | 11,091 |  |  |  | 27,239 |
Japan |  |  | 17,476 |  |  |  | 19,032 |  |  |  | 68,965 |  |  |  | 45,484 |
Other Asia-Pacific |  |  | 24,787 |  |  |  | 11,007 |  |  |  | 47,713 |  |  |  | 34,541 |
Total net revenues |  | $ | 89,041 |  |  | $ | 96,801 |  |  | $ | 269,747 |  |  | $ | 289,106 |
Summary of Significant Changes in Contract Assets and Deferred Revenue | The table below shows significant changes in contract assets (dollars in thousands):
|  | Contract assets |
Balance as of September 30, 2021 |  | $ | 59,143 |
Revenues recognized but not billed |  |  | 81,375 |
Amounts reclassified to accounts receivable, net |  |  | (49,514 | )
Foreign exchange impact on ending balance |  |  | (10,544 | )
Balance as of June 30, 2022 |  | $ | 80,460 |
The table below shows significant changes in deferred revenue (dollars in thousands):
|  | Deferred revenue |
Balance as of September 30, 2021 |  | $ | 276,737 |
Amounts billed but not recognized |  |  | 76,526 |
Revenue recognized |  |  | (101,104 | )
Foreign exchange impact on ending balance |  |  | (3,474 | )
Balance as of June 30, 2022 |  | $ | 248,685 |
Summary of Estimated Revenue Expected to be Recognized in Future Related to Performance Obligations Unsatisfied or Partially Unsatisfied | The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied or partially unsatisfied at June 30, 2022 (dollars in thousands):
|  | Within One Year |  |  | Two to Five Years |  |  | Greater than Five Years |  |  | Total |
Total revenue |  | $ | 155,697 |  |  | $ | 158,849 |  |  | $ | 27,041 |  |  | $ | 341,587 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
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- Definition Tabular disclosure of expected timing for satisfying remaining performance obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045 + Details
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