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AVAILABLE-FOR-SALE INVESTMENTS - Investments by Contractual Maturity (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Amortized Cost |  |
Due within one year | $ 12,033 | $ 92,253
Due after one year through five years | 0 | 6,981
Amortized Cost | 12,033 | 99,234
Fair Value |  |
Due within one year | 12,026 | 91,669
Due after one year through five years | 0 | 6,923
Debt securities available for sale | $ 12,026 | $ 98,592

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