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Fair Value Measurements (Schedule of Available-for-Sale Securities Reconciliation and Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value and Investments Classified by Contractual Maturity Date ) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | $ 312,422 | $ 248,947
Unrealized Gains | 2,963 | 1,050
Unrealized Losses | (1,618) | (3,246)
Fair Value | 313,767 | 246,751
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 30,770 | 53,530
Less than 12 Months, Unrealized Losses | (296) | (364)
12 Months or Greater, Fair Value | 32,751 | 84,579
12 Months or Greater, Unrealized Losses | (1,322) | (2,882)
Total, Fair Value | 63,521 | 138,109
Total, Unrealized Losses | (1,618) | (3,246)
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] |  |
Amortized Cost, Due within one year | 62,604 |
Fair Value, Due within one year | 62,446 |
Amortized Cost, Due after one year through five years | 238,129 |
Fair Value, Due after one year through five years | 240,124 |
Amortized Cost, Due after five years | 11,689 |
Fair Value, Due after five years | 11,197 |
Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 172,887 | 142,103
Unrealized Gains | 1,951 | 638
Unrealized Losses | (1,403) | (2,755)
Fair Value | 173,435 | 139,986
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 18,431 | 29,060
Less than 12 Months, Unrealized Losses | (81) | (215)
12 Months or Greater, Fair Value | 32,751 | 46,824
12 Months or Greater, Unrealized Losses | (1,322) | (2,540)
Total, Fair Value | 51,182 | 75,884
Total, Unrealized Losses | (1,403) | (2,755)
Investments in lieu of retention: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 139,535 | 106,844
Unrealized Gains | 1,012 | 412
Unrealized Losses | (215) | (491)
Fair Value | 140,332 | 106,765
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 12,339 | 24,470
Less than 12 Months, Unrealized Losses | (215) | (149)
12 Months or Greater, Fair Value | 0 | 37,755
12 Months or Greater, Unrealized Losses | 0 | (342)
Total, Fair Value | 12,339 | 62,225
Total, Unrealized Losses | (215) | (491)
Corporate debt securities | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 153,219 | 118,421
Unrealized Gains | 1,909 | 603
Unrealized Losses | (450) | (1,242)
Fair Value | 154,678 | 117,782
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 17,881 | 23,985
Less than 12 Months, Unrealized Losses | (76) | (159)
12 Months or Greater, Fair Value | 22,344 | 30,384
12 Months or Greater, Unrealized Losses | (374) | (1,083)
Total, Fair Value | 40,225 | 54,369
Total, Unrealized Losses | (450) | (1,242)
Corporate debt securities | Investments in lieu of retention: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 131,638 | 106,014
Unrealized Gains | 817 | 224
Unrealized Losses | (32) | (491)
Fair Value | 132,423 | 105,747
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 5,459 | 24,470
Less than 12 Months, Unrealized Losses | (32) | (149)
12 Months or Greater, Fair Value | 0 | 37,755
12 Months or Greater, Unrealized Losses | 0 | (342)
Total, Fair Value | 5,459 | 62,225
Total, Unrealized Losses | (32) | (491)
U.S. government agency securities | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 12,038 | 16,323
Unrealized Gains | 18 | 35
Unrealized Losses | (356) | (663)
Fair Value | 11,700 | 15,695
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 289 | 4,371
Less than 12 Months, Unrealized Losses | (1) | (43)
12 Months or Greater, Fair Value | 5,236 | 10,699
12 Months or Greater, Unrealized Losses | (355) | (620)
Total, Fair Value | 5,525 | 15,070
Total, Unrealized Losses | (356) | (663)
Municipal bonds | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 7,432 | 7,159
Unrealized Gains | 24 | 0
Unrealized Losses | (583) | (831)
Fair Value | 6,873 | 6,328
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 261 | 704
Less than 12 Months, Unrealized Losses | (4) | (13)
12 Months or Greater, Fair Value | 4,986 | 5,560
12 Months or Greater, Unrealized Losses | (579) | (818)
Total, Fair Value | 5,247 | 6,264
Total, Unrealized Losses | (583) | (831)
Municipal bonds | Investments in lieu of retention: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 7,897 | 830
Unrealized Gains | 195 | 188
Unrealized Losses | (183) | 0
Fair Value | 7,909 | 1,018
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 Months, Fair Value | 6,880 |
Less than 12 Months, Unrealized Losses | (183) |
12 Months or Greater, Fair Value | 0 |
12 Months or Greater, Unrealized Losses | 0 |
Total, Fair Value | 6,880 |
Total, Unrealized Losses | (183) |
Corporate certificates of deposit | Restricted investments: |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized Cost | 198 | 200
Unrealized Gains | 0 | 0
Unrealized Losses | (14) | (19)
Fair Value | 184 | 181
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 | 185 | 181
12 Months or Greater, Unrealized Losses | (14) | (19)
Total, Fair Value | 185 | 181
Total, Unrealized Losses | $ (14) | $ (19)

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