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Investments | 3 Months Ended
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Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Investments | INVESTMENTS The Company’s investments consisted of the following:
| As of December 31, 2023
| (in thousands)
| Adjusted Basis |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Available-for-sale debt securities | $ | 163,119 |  |  | $ | — |  |  | $ | (1,055) |  |  | $ | 162,064 |
Total current investments | $ | 163,119 |  |  | $ | — |  |  | $ | (1,055) |  |  | $ | 162,064 |
| As of September 30, 2023
| (in thousands)
| Adjusted Basis |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Available-for-sale debt securities | $ | 295,699 |  |  | $ | — |  |  | $ | (2,964) |  |  | $ | 292,735 |
Total current investments | $ | 295,699 |  |  | $ | — |  |  | $ | (2,964) |  |  | $ | 292,735 |
The Company has determined that the available-for-sale debt securities that were in an unrealized loss position did not have any credit loss impairment as of December 31, 2023 and 2022.

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