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Fair Value Measurements - Schedule of Marketable Debt Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | $ 81,846 | $ 78,573
Gross Unrealized Gains | 372 | 123
Gross Unrealized Losses | (2,671) | (3,056)
Estimated Fair Value | 79,547 | 75,640
Credit Impairment Losses | 0 | 0
Unrestricted |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 53,158 | 53,531
Gross Unrealized Gains | 9 | 0
Gross Unrealized Losses | (2,671) | (2,996)
Estimated Fair Value | 50,496 | 50,535
Credit Impairment Losses | 0 | 0
Unrestricted | Municipal bonds — taxable |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 10,249 | 10,276
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (528) | (676)
Estimated Fair Value | 9,721 | 9,600
Credit Impairment Losses | 0 | 0
Unrestricted | Municipal bonds — non-taxable |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 42,909 | 43,255
Gross Unrealized Gains | 9 | 0
Gross Unrealized Losses | (2,143) | (2,320)
Estimated Fair Value | 40,775 | 40,935
Credit Impairment Losses | 0 | 0
Restricted |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 28,688 | 25,042
Gross Unrealized Gains | 363 | 123
Gross Unrealized Losses | 0 | (60)
Estimated Fair Value | 29,051 | 25,105
Credit Impairment Losses | 0 | 0
Restricted | Municipal bonds — taxable |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 9,168 | 9,131
Gross Unrealized Gains | 142 | 40
Gross Unrealized Losses | 0 | (41)
Estimated Fair Value | 9,310 | 9,130
Credit Impairment Losses | 0 | 0
Restricted | U.S. treasury bonds |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 9,296 | 7,276
Gross Unrealized Gains | 106 | 38
Gross Unrealized Losses | 0 | (5)
Estimated Fair Value | 9,402 | 7,309
Credit Impairment Losses | 0 | 0
Restricted | U.S. government agency bonds |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 1,223 | 1,208
Gross Unrealized Gains | 11 | 10
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 1,234 | 1,218
Credit Impairment Losses | 0 | 0
Restricted | International fixed income bonds |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 715 | 647
Gross Unrealized Gains | 5 | 5
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 720 | 652
Credit Impairment Losses | 0 | 0
Restricted | Corporate bonds |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Amortized Cost | 8,286 | 6,780
Gross Unrealized Gains | 99 | 30
Gross Unrealized Losses | 0 | (14)
Estimated Fair Value | 8,385 | 6,796
Credit Impairment Losses | $ 0 | $ 0

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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