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Investments (Tables) | 3 Months Ended
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Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract] |
Summary of Contractual Maturities of Investments | The contractual maturities of available-for-sale investments were as follows (in thousands):
| December 31, 2021 | October 1, 2021
Less than one year | $ | 132,074 |  | $ | 120,590 |
Over one year | 72,240 |  | 67,775 |
Total available-for-sale investments | $ | 204,314 |  | $ | 188,365 |
Debt Securities, Available-for-sale | The amortized cost, gross unrealized holding gains or losses and fair value of our available-for-sale investments by major investment type are summarized in the tables below (in thousands):
| December 31, 2021
| Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Aggregate Fair Value
Corporate bonds | $ | 89,230 |  |  | $ | 48 |  |  | $ | (617) |  |  | $ | 88,661 |
Commercial paper | 115,706 |  |  | — |  |  | (53) |  |  | 115,653 |
Total short-term investments | $ | 204,936 |  |  | $ | 48 |  |  | $ | (670) |  |  | $ | 204,314 |
| October 1, 2021
| Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Aggregate Fair Value
Corporate bonds | $ | 73,653 |  |  | $ | 151 |  |  | $ | (171) |  |  | $ | 73,633 |
Commercial paper | 114,718 |  |  | 21 |  |  | (7) |  |  | 114,732 |
Total short-term investments | $ | 188,371 |  |  | $ | 172 |  |  | $ | (178) |  |  | $ | 188,365 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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