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Restricted Available-for-Sale Investments - Summary of Amortized Cost And Estimated Fair Values of Restricted Available-For-Sale Investments by Contractual Maturity (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Estimated Fair Value |  |
Total restricted available-for-sale investments | $ 21,687 | $ 21,712
Restricted Investments |  |
Amortized Cost |  |
Due in one year | 19,663 |
Due within one year to five years | 2,241 |
Due within five years to ten years | 0 |
Due after ten years | 0 |
Amortized Cost | 21,904 | 21,633
Estimated Fair Value |  |
Due in one year | 19,473 |
Due within one year to five years | 2,214 |
Due within five years to ten years | 0 |
Due after ten years | 0 |
Total restricted available-for-sale investments | $ 21,687 | $ 21,712

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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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