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Fair Value Measurements (Available for Sale) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | $ 233,488 | $ 222,134
Unrealized Gains | 2,898 | 1,272
Unrealized Losses | (3,060) | (6,158)
Fair Value | 233,326 | 217,248
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 3,559 | 17,748
Less than 12 Months, Unrealized Losses | (63) | (64)
12 Months or Greater, Fair Value | 88,611 | 120,731
12 Months or Greater, Unrealized Losses | (2,997) | (6,094)
Total, Fair Value | 92,170 | 138,479
Total, Unrealized Losses | (3,060) | (6,158)
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] |  |
Amortized Cost, Due within one year | 73,458 |
Fair Value, Due within one year | 72,601 |
Amortized Cost, Due after one year through five years | 149,868 |
Fair Value, Due after one year through five years | 151,220 |
Amortized Cost, Due after five years | 10,162 |
Fair Value, Due after five years | 9,505 |
Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 135,926 | 133,710
Unrealized Gains | 1,959 | 785
Unrealized Losses | (2,392) | (4,208)
Fair Value | 135,493 | 130,287
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 1,051 | 6,350
Less than 12 Months, Unrealized Losses | (33) | (9)
12 Months or Greater, Fair Value | 49,672 | 71,005
12 Months or Greater, Unrealized Losses | (2,359) | (4,199)
Total, Fair Value | 50,723 | 77,355
Total, Unrealized Losses | (2,392) | (4,208)
Investments in lieu of retention: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 97,562 | 88,424
Unrealized Gains | 939 | 487
Unrealized Losses | (668) | (1,950)
Fair Value | 97,833 | 86,961
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 2,508 | 11,398
Less than 12 Months, Unrealized Losses | (30) | (55)
12 Months or Greater, Fair Value | 38,939 | 49,726
12 Months or Greater, Unrealized Losses | (638) | (1,895)
Total, Fair Value | 41,447 | 61,124
Total, Unrealized Losses | (668) | (1,950)
Corporate debt securities | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 111,009 | 95,903
Unrealized Gains | 1,881 | 762
Unrealized Losses | (1,132) | (2,202)
Fair Value | 111,758 | 94,463
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 742 | 4,971
Less than 12 Months, Unrealized Losses | 0 | (3)
12 Months or Greater, Fair Value | 31,397 | 40,649
12 Months or Greater, Unrealized Losses | (1,132) | (2,199)
Total, Fair Value | 32,139 | 45,620
Total, Unrealized Losses | (1,132) | (2,202)
Corporate debt securities | Investments in lieu of retention: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 96,733 | 87,601
Unrealized Gains | 712 | 246
Unrealized Losses | (668) | (1,950)
Fair Value | 96,777 | 85,897
U.S. government agency securities | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 17,946 | 29,082
Unrealized Gains | 71 | 18
Unrealized Losses | (602) | (1,054)
Fair Value | 17,415 | 28,046
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 309 | 1,280
Less than 12 Months, Unrealized Losses | (33) | (4)
12 Months or Greater, Fair Value | 12,202 | 22,858
12 Months or Greater, Unrealized Losses | (569) | (1,050)
Total, Fair Value | 12,511 | 24,138
Total, Unrealized Losses | (602) | (1,054)
Municipal bonds | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 6,630 | 8,227
Unrealized Gains | 7 | 5
Unrealized Losses | (641) | (914)
Fair Value | 5,996 | 7,318
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 0 | 99
Less than 12 Months, Unrealized Losses | 0 | (2)
12 Months or Greater, Fair Value | 5,749 | 7,038
12 Months or Greater, Unrealized Losses | (641) | (912)
Total, Fair Value | 5,749 | 7,137
Total, Unrealized Losses | (641) | (914)
Municipal bonds | Investments in lieu of retention: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 829 | 823
Unrealized Gains | 227 | 241
Unrealized Losses | 0 | 0
Fair Value | 1,056 | 1,064
Corporate certificates of deposit | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 341 | 498
Unrealized Gains | 0 | 0
Unrealized Losses | (17) | (38)
Fair Value | 324 | 460
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 0 | 0
Less than 12 Months, Unrealized Losses | 0 | 0
12 Months or Greater, Fair Value | 324 | 460
12 Months or Greater, Unrealized Losses | (17) | (38)
Total, Fair Value | 324 | 460
Total, Unrealized Losses | $ (17) | $ (38)

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