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Fair Value Measurements (Tables) | 12 Months Ended
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Sep. 30, 2020
Fair Value Disclosures [Abstract] |
Fair Value, by Balance Sheet Grouping | Our significant financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2020 and 2019 were as follows:
(in thousands) |  | September 30, 2020 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents(1) |  | $ | 105,299 |  |  | $ | — |  |  | $ | — |  |  | $ | 105,299 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate notes/bonds |  |  | 59,099 |  |  |  | — |  |  |  | — |  |  |  | 59,099 |
Forward contracts |  |  | — |  |  |  | 903 |  |  |  | — |  |  |  | 903 |
|  | $ | 164,398 |  |  | $ | 903 |  |  | $ | — |  |  | $ | 165,301 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward contracts |  |  | — |  |  |  | 1,073 |  |  |  | — |  |  |  | 1,073 |
|  | $ | — |  |  | $ | 1,073 |  |  | $ | — |  |  | $ | 1,073 |
(in thousands) |  | September 30, 2019 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents(1) |  | $ | 108,020 |  |  | $ | — |  |  | $ | — |  |  | $ | 108,020 |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | — |  |  |  | 999 |  |  |  | — |  |  |  | 999 |
Corporate notes/bonds |  |  | 56,436 |  |  |  | — |  |  |  | — |  |  |  | 56,436 |
Forward contracts |  |  | — |  |  |  | 3,064 |  |  |  | — |  |  |  | 3,064 |
|  | $ | 164,456 |  |  | $ | 4,063 |  |  | $ | — |  |  | $ | 168,519 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward contracts |  |  | — |  |  |  | 2,771 |  |  |  | — |  |  |  | 2,771 |
|  | $ | — |  |  | $ | 2,771 |  |  | $ | — |  |  | $ | 2,771 |
(1) | Money market funds and time deposits.

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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