Fair Value Measurements - Schedule of Marketable Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	$ 79,404	$ 73,693
Gross Unrealized Gains	422	742
Gross Unrealized Losses	(1,486)	(1,309)
Estimated Fair Value	78,340	73,126
Credit Impairment Losses	0	0
Unrestricted
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	43,804	43,942
Gross Unrealized Gains	57	125
Gross Unrealized Losses	(1,419)	(1,293)
Estimated Fair Value	42,442	42,774
Credit Impairment Losses	0	0
Unrestricted | Municipal bonds — taxable
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	4,146	4,115
Gross Unrealized Gains	6	1
Gross Unrealized Losses	(87)	(70)
Estimated Fair Value	4,065	4,046
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	39,658	39,827
Gross Unrealized Gains	51	124
Gross Unrealized Losses	(1,332)	(1,223)
Estimated Fair Value	38,377	38,728
Credit Impairment Losses	0	0
Restricted
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	35,600	29,751
Gross Unrealized Gains	365	617
Gross Unrealized Losses	(67)	(16)
Estimated Fair Value	35,898	30,352
Credit Impairment Losses	0	0
Restricted | Municipal bonds — taxable
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	9,260	9,222
Gross Unrealized Gains	201	284
Gross Unrealized Losses	(5)	0
Estimated Fair Value	9,456	9,506
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	13,688	9,904
Gross Unrealized Gains	72	148
Gross Unrealized Losses	(38)	(15)
Estimated Fair Value	13,722	10,037
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	1,222	1,210
Gross Unrealized Gains	2	5
Gross Unrealized Losses	0	0
Estimated Fair Value	1,224	1,215
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	731	733
Gross Unrealized Gains	0	3
Gross Unrealized Losses	0	0
Estimated Fair Value	731	736
Credit Impairment Losses	0	0
Restricted | Corporate bonds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Amortized Cost	10,699	8,682
Gross Unrealized Gains	90	177
Gross Unrealized Losses	(24)	(1)
Estimated Fair Value	10,765	8,858
Credit Impairment Losses	$ 0	$ 0