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Investments - Available-for-sale Securities in Unrealized Loss Positions (Details)
$ in Thousands
Dec. 31, 2022
USD ($)
Security
Dec. 31, 2021
USD ($)
Security
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 205 134
Debt securities, 12 months or More, number of issues | Security 133 10
Debt securities, number of issues | Security 338 144
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 38,757 $ 95,923
Debt securities, 12 months or More, fair value 71,142 7,801
Debt securities, fair value 109,899 103,724
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (4,857) (1,750)
Debt securities, 12 months or More, unrealized losses (12,062) (97)
Debt securities, total unrealized losses $ (16,919) $ (1,847)
U.S. Government    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 8 6
Debt securities, 12 months or More, number of issues | Security 5 1
Debt securities, number of issues | Security 13 7
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 3,534 $ 10,323
Debt securities, 12 months or More, fair value 3,964 4,728
Debt securities, fair value 7,498 15,051
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (135) (47)
Debt securities, 12 months or More, unrealized losses (200) (30)
Debt securities, total unrealized losses $ (335) $ (77)
State and local government    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 77 41
Debt securities, 12 months or More, number of issues | Security 45 4
Debt securities, number of issues | Security 122 45
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 12,966 $ 8,875
Debt securities, 12 months or More, fair value 7,147 446
Debt securities, fair value 20,113 9,321
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (2,318) (172)
Debt securities, 12 months or More, unrealized losses (2,354) (17)
Debt securities, total unrealized losses $ (4,672) $ (189)
Corporate debt    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 27 41
Debt securities, 12 months or More, number of issues | Security 42 1
Debt securities, number of issues | Security 69 42
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 10,069 $ 22,748
Debt securities, 12 months or More, fair value 20,890 705
Debt securities, fair value 30,959 23,453
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (1,373) (505)
Debt securities, 12 months or More, unrealized losses (3,415) (45)
Debt securities, total unrealized losses $ (4,788) $ (550)
Asset-backed securities    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 6 24
Debt securities, 12 months or More, number of issues | Security 20 2
Debt securities, number of issues | Security 26 26
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 3,188 $ 24,305
Debt securities, 12 months or More, fair value 17,308 1,893
Debt securities, fair value 20,496 26,198
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (76) (219)
Debt securities, 12 months or More, unrealized losses (1,170) (5)
Debt securities, total unrealized losses $ (1,246) $ (224)
Mortgage-backed securities    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 57 12
Debt securities, 12 months or More, number of issues | Security 12 0
Debt securities, number of issues | Security 69 12
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 4,006 $ 27,034
Debt securities, 12 months or More, fair value 20,031 0
Debt securities, fair value 24,037 27,034
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (573) (762)
Debt securities, 12 months or More, unrealized losses (4,584) 0
Debt securities, total unrealized losses $ (5,157) $ (762)
Commercial mortgage-backed securities    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 4 0
Debt securities, 12 months or More, number of issues | Security 0 0
Debt securities, number of issues | Security 4 0
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 3,205 $ 0
Debt securities, 12 months or More, fair value 0 0
Debt securities, fair value 3,205 0
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (186) 0
Debt securities, 12 months or More, unrealized losses 0 0
Debt securities, total unrealized losses $ (186) $ 0
Collateralized mortgage obligations    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]    
Debt securities, less than 12 months, number of issues | Security 26 10
Debt securities, 12 months or More, number of issues | Security 9 2
Debt securities, number of issues | Security 35 12
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]    
Debt securities, less than 12 months, fair value $ 1,789 $ 2,638
Debt securities, 12 months or More, fair value 1,802 29
Debt securities, fair value 3,591 2,667
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]    
Debt securities, less than 12 months, unrealized losses (196) (45)
Debt securities, 12 months or More, unrealized losses (339) 0
Debt securities, total unrealized losses $ (535) $ (45)