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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Sep. 30, 2021
Fair Value Disclosures [Abstract] |
Fair Value of Company's Contingent Consideration, Investment in Debt Security and Foreign Currency Forward Contracts by Valuation Hierarchy | The following tables present the fair value of the Company’s short-term investments and contingent consideration by valuation hierarchy and input (in thousands):
|  | AS OF SEPTEMBER 30, 2021 |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable (Level 2) |  |  | Significant Unobservable (Level 3) |  |  | Totals |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | — |  |  | $ | 9,496 |  |  | $ | — |  |  | $ | 9,496 |
Total assets |  | $ | — |  |  | $ | 9,496 |  |  | $ | — |  |  | $ | 9,496 |
Contingent consideration liabilities |  |  | — |  |  |  | — |  |  |  | (5,210 | ) |  |  | (5,210 | )
Total liabilities |  | $ | — |  |  | $ | — |  |  | $ | (5,210 | ) |  | $ | (5,210 | )
|  | AS OF SEPTEMBER 30, 2020 |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable (Level 2) |  |  | Significant Unobservable (Level 3) |  |  | Totals |
Contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | (10,962 | ) |  | $ | (10,962 | )
Changes in Fair Value of Company Level 3 Financial Instruments | The following table summarizes changes in the fair value of the Company’s Level 3 financial instruments for the fiscal year s ended September 30, 20 20 and 20 2 1:
Balance at October 1, 2019 |  | $ | 9,940 |
Fair value adjustments |  |  | 1,100 |
Payment of contingent consideration |  |  | (78 | )
Balance at September 30, 2020 |  |  | 10,962 |
Fair value adjustments |  |  | (3,524 | )
Payment of contingent consideration |  |  | (1,421 | )
|  |  | 6,017 |
Less: Consideration payable |  |  | (807 | )
Balance at September 30, 2021 |  | $ | 5,210 |

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- Definition Fair value liabilities measured on nonrecurring basis unobservable input reconciliation. + References No definition available. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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