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Securities, Unrealized Loss Position (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]    
Less than 12 months, fair value $ 193,587 $ 235,668
More than 12 months, fair value 133,454 87,969
Total, fair value 327,041 323,637
Less than 12 months, unrealized losses (4,420) (11,785)
More than 12 months, unrealized losses (16,738) (12,832)
Total, unrealized losses (21,158) (24,617)
Debt Securities Available-for-Sale [Abstract]    
Securities in nonaccrual status 0 0
Securities purchased with deterioration in credit quality 0 0
Collateral dependent securities 0 0
Federal Agency Mortgage-backed Securities [Member]    
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]    
Less than 12 months, fair value 13,826 38,380
More than 12 months, fair value 58,935 35,526
Total, fair value 72,761 73,906
Less than 12 months, unrealized losses (562) (4,807)
More than 12 months, unrealized losses (9,257) (5,981)
Total, unrealized losses (9,819) (10,788)
Federal Agency Collateralized Mortgage Obligations (CMO) [Member]    
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]    
Less than 12 months, fair value 20,691 20,997
More than 12 months, fair value 5,058 5,103
Total, fair value 25,749 26,100
Less than 12 months, unrealized losses (663) (885)
More than 12 months, unrealized losses (665) (791)
Total, unrealized losses (1,328) (1,676)
Federal Agency Debt [Member]    
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]    
Less than 12 months, fair value 23,548 26,383
More than 12 months, fair value 28,482 21,956
Total, fair value 52,030 48,339
Less than 12 months, unrealized losses (580) (1,529)
More than 12 months, unrealized losses (3,124) (2,759)
Total, unrealized losses (3,704) (4,288)
Municipal Bonds [Member]    
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]    
Less than 12 months, fair value 0 2,176
More than 12 months, fair value 4,299 2,021
Total, fair value 4,299 4,197
Less than 12 months, unrealized losses 0 (315)
More than 12 months, unrealized losses (559) (354)
Total, unrealized losses (559) (669)
US Treasuries [Member]    
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]    
Less than 12 months, fair value 135,522 143,989
More than 12 months, fair value 26,574 16,600
Total, fair value 162,096 160,589
Less than 12 months, unrealized losses (2,615) (3,884)
More than 12 months, unrealized losses (1,544) (1,524)
Total, unrealized losses (4,159) (5,408)
SBA Pools [Member]    
Debt Securities Available-for-Sale, Unrealized Loss Position [Abstract]    
Less than 12 months, fair value 0 3,743
More than 12 months, fair value 10,106 6,763
Total, fair value 10,106 10,506
Less than 12 months, unrealized losses 0 (365)
More than 12 months, unrealized losses (1,589) (1,423)
Total, unrealized losses $ (1,589) $ (1,788)