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Fair Value Measurements (Available for Sale) (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost $ 228,737 $ 248,947
Unrealized Gains 1,675 1,050
Unrealized Losses (2,227) (3,246)
Fair Value 228,185 246,751
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 18,424 53,530
Less than 12 Months, Unrealized Losses (132) (364)
12 Months or Greater, Fair Value 65,419 84,579
12 Months or Greater, Unrealized Losses (2,095) (2,882)
Total, Fair Value 83,843 138,109
Total, Unrealized Losses (2,227) (3,246)
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]    
Amortized Cost, Due within one year 70,227  
Fair Value, Due within one year 69,949  
Amortized Cost, Due after one year through five years 146,911  
Fair Value, Due after one year through five years 147,405  
Amortized Cost, Due after five years 11,599  
Fair Value, Due after five years 10,831  
Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 136,531 142,103
Unrealized Gains 1,126 638
Unrealized Losses (2,065) (2,755)
Fair Value 135,592 139,986
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 4,582 29,060
Less than 12 Months, Unrealized Losses (63) (215)
12 Months or Greater, Fair Value 41,932 46,824
12 Months or Greater, Unrealized Losses (2,002) (2,540)
Total, Fair Value 46,514 75,884
Total, Unrealized Losses (2,065) (2,755)
Investments in lieu of retention:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 92,206 106,844
Unrealized Gains 549 412
Unrealized Losses (162) (491)
Fair Value 92,593 106,765
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 13,842 24,470
Less than 12 Months, Unrealized Losses (69) (149)
12 Months or Greater, Fair Value 23,487 37,755
12 Months or Greater, Unrealized Losses (93) (342)
Total, Fair Value 37,329 62,225
Total, Unrealized Losses (162) (491)
Corporate debt securities | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 115,378 118,421
Unrealized Gains 1,079 603
Unrealized Losses (818) (1,242)
Fair Value 115,639 117,782
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 3,476 23,985
Less than 12 Months, Unrealized Losses (23) (159)
12 Months or Greater, Fair Value 27,630 30,384
12 Months or Greater, Unrealized Losses (795) (1,083)
Total, Fair Value 31,106 54,369
Total, Unrealized Losses (818) (1,242)
Corporate debt securities | Investments in lieu of retention:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 90,604 106,014
Unrealized Gains 372 224
Unrealized Losses (151) (491)
Fair Value 90,825 105,747
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 13,468 24,470
Less than 12 Months, Unrealized Losses (58) (149)
12 Months or Greater, Fair Value 23,487 37,755
12 Months or Greater, Unrealized Losses (93) (342)
Total, Fair Value 36,955 62,225
Total, Unrealized Losses (151) (491)
U.S. government agency securities | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 14,059 16,323
Unrealized Gains 45 35
Unrealized Losses (519) (663)
Fair Value 13,585 15,695
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 571 4,371
Less than 12 Months, Unrealized Losses (35) (43)
12 Months or Greater, Fair Value 8,710 10,699
12 Months or Greater, Unrealized Losses (484) (620)
Total, Fair Value 9,281 15,070
Total, Unrealized Losses (519) (663)
Municipal bonds | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 6,894 7,159
Unrealized Gains 2 0
Unrealized Losses (709) (831)
Fair Value 6,187 6,328
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 535 704
Less than 12 Months, Unrealized Losses (5) (13)
12 Months or Greater, Fair Value 5,411 5,560
12 Months or Greater, Unrealized Losses (704) (818)
Total, Fair Value 5,946 6,264
Total, Unrealized Losses (709) (831)
Municipal bonds | Investments in lieu of retention:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 1,602 830
Unrealized Gains 177 188
Unrealized Losses (11) 0
Fair Value 1,768 1,018
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 374  
Less than 12 Months, Unrealized Losses (11)  
12 Months or Greater, Fair Value 0  
12 Months or Greater, Unrealized Losses 0  
Total, Fair Value 374  
Total, Unrealized Losses (11)  
Corporate certificates of deposit | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 200 200
Unrealized Gains 0 0
Unrealized Losses (19) (19)
Fair Value 181 181
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 181 181
12 Months or Greater, Unrealized Losses (19) (19)
Total, Fair Value 181 181
Total, Unrealized Losses $ (19) $ (19)