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Fair Value Measurements (Available for Sale) (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost $ 284,087 $ 248,947
Unrealized Gains 2,443 1,050
Unrealized Losses (1,962) (3,246)
Fair Value 284,568 246,751
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 22,134 53,530
Less than 12 Months, Unrealized Losses (286) (364)
12 Months or Greater, Fair Value 36,858 84,579
12 Months or Greater, Unrealized Losses (1,676) (2,882)
Total, Fair Value 58,992 138,109
Total, Unrealized Losses (1,962) (3,246)
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]    
Amortized Cost, Due within one year 48,220  
Fair Value, Due within one year 47,953  
Amortized Cost, Due after one year through five years 224,643  
Fair Value, Due after one year through five years 226,073  
Amortized Cost, Due after five years 11,224  
Fair Value, Due after five years 10,542  
Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 157,432 142,103
Unrealized Gains 1,668 638
Unrealized Losses (1,727) (2,755)
Fair Value 157,373 139,986
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 4,634 29,060
Less than 12 Months, Unrealized Losses (51) (215)
12 Months or Greater, Fair Value 36,858 46,824
12 Months or Greater, Unrealized Losses (1,676) (2,540)
Total, Fair Value 41,492 75,884
Total, Unrealized Losses (1,727) (2,755)
Investments in lieu of retention:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 126,655 106,844
Unrealized Gains 775 412
Unrealized Losses (235) (491)
Fair Value 127,195 106,765
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 17,500 24,470
Less than 12 Months, Unrealized Losses (235) (149)
12 Months or Greater, Fair Value 0 37,755
12 Months or Greater, Unrealized Losses 0 (342)
Total, Fair Value 17,500 62,225
Total, Unrealized Losses (235) (491)
Corporate debt securities | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 137,782 118,421
Unrealized Gains 1,611 603
Unrealized Losses (600) (1,242)
Fair Value 138,793 117,782
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 3,192 23,985
Less than 12 Months, Unrealized Losses (12) (159)
12 Months or Greater, Fair Value 24,301 30,384
12 Months or Greater, Unrealized Losses (588) (1,083)
Total, Fair Value 27,493 54,369
Total, Unrealized Losses (600) (1,242)
Corporate debt securities | Investments in lieu of retention:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 118,759 106,014
Unrealized Gains 605 224
Unrealized Losses (41) (491)
Fair Value 119,323 105,747
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 10,631 24,470
Less than 12 Months, Unrealized Losses (41) (149)
12 Months or Greater, Fair Value 0 37,755
12 Months or Greater, Unrealized Losses 0 (342)
Total, Fair Value 10,631 62,225
Total, Unrealized Losses (41) (491)
U.S. government agency securities | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 12,367 16,323
Unrealized Gains 47 35
Unrealized Losses (453) (663)
Fair Value 11,961 15,695
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 918 4,371
Less than 12 Months, Unrealized Losses (36) (43)
12 Months or Greater, Fair Value 7,076 10,699
12 Months or Greater, Unrealized Losses (417) (620)
Total, Fair Value 7,994 15,070
Total, Unrealized Losses (453) (663)
Municipal bonds | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 7,084 7,159
Unrealized Gains 10 0
Unrealized Losses (657) (831)
Fair Value 6,437 6,328
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 524 704
Less than 12 Months, Unrealized Losses (3) (13)
12 Months or Greater, Fair Value 5,299 5,560
12 Months or Greater, Unrealized Losses (654) (818)
Total, Fair Value 5,823 6,264
Total, Unrealized Losses (657) (831)
Municipal bonds | Investments in lieu of retention:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 7,896 830
Unrealized Gains 170 188
Unrealized Losses (194) 0
Fair Value 7,872 1,018
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Less than 12 Months, Fair Value 6,869  
Less than 12 Months, Unrealized Losses (194)  
12 Months or Greater, Fair Value 0  
12 Months or Greater, Unrealized Losses 0  
Total, Fair Value 6,869  
Total, Unrealized Losses (194)  
Corporate certificates of deposit | Restricted investments:    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Amortized Cost 199 200
Unrealized Gains 0 0
Unrealized Losses (17) (19)
Fair Value 182 181
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 182 181
12 Months or Greater, Unrealized Losses (17) (19)
Total, Fair Value 182 181
Total, Unrealized Losses $ (17) $ (19)