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Investment Securities - Unrealized losses (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Schedule of Available-for-sale Securities |  |
Debt securities, amortized cost | $ 669,646 | $ 740,468
Less than 12 Months, Fair Value | 392 | 237,917
12 Months or More, Fair Value | 595,686 | 410,654
Total Fair Value | 596,078 | 648,571
Less than 12 Months, Unrealized Losses | (3) | (27,795)
12 Months or More, Unrealized Losses | (72,460) | (63,866)
Total Unrealized Losses | (72,463) | (91,661)
Held-to-maturity Securities, Less than 12 Months, Fair Value | 108 | 91,701
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses | (1) | (8,982)
Held-to-maturity Securities, 12 Months or More, Fair Value | 274,360 | 176,980
Held-to-maturity Securities, 12 Months or More,Unrealized Losses | (26,559) | (24,943)
Held-to-maturity Securities, Total Fair Value | 274,468 | 268,681
Held-to-maturity Securities, Total Unrealized Losses | (26,560) | (33,925)
U.S. Government agencies |  |
Schedule of Available-for-sale Securities |  |
Debt securities, amortized cost | 102 | 107
Less than 12 Months, Fair Value | 0 | 0
12 Months or More, Fair Value | 95 | 98
Total Fair Value | 95 | 98
Less than 12 Months, Unrealized Losses | 0 | 0
12 Months or More, Unrealized Losses | (7) | (9)
Total Unrealized Losses | (7) | (9)
Obligations of states and political subdivisions |  |
Schedule of Available-for-sale Securities |  |
Debt securities, amortized cost | 198,070 | 201,638
Less than 12 Months, Fair Value | 0 | 90,808
12 Months or More, Fair Value | 180,222 | 84,177
Total Fair Value | 180,222 | 174,985
Less than 12 Months, Unrealized Losses | 0 | (12,208)
12 Months or More, Unrealized Losses | (17,848) | (14,445)
Total Unrealized Losses | (17,848) | (26,653)
Held-to-maturity Securities, Less than 12 Months, Fair Value | 108 | 48,311
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses | (1) | (5,505)
Held-to-maturity Securities, 12 Months or More, Fair Value | 175,309 | 118,026
Held-to-maturity Securities, 12 Months or More,Unrealized Losses | (14,187) | (17,661)
Held-to-maturity Securities, Total Fair Value | 175,417 | 166,337
Held-to-maturity Securities, Total Unrealized Losses | (14,188) | (23,166)
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations |  |
Schedule of Available-for-sale Securities |  |
Debt securities, amortized cost | 88,874 | 117,292
Less than 12 Months, Fair Value | 392 | 20,825
12 Months or More, Fair Value | 82,760 | 88,520
Total Fair Value | 83,152 | 109,345
Less than 12 Months, Unrealized Losses | (3) | (1,058)
12 Months or More, Unrealized Losses | (5,522) | (6,745)
Total Unrealized Losses | (5,525) | (7,803)
Held-to-maturity Securities, Less than 12 Months, Fair Value | 0 | 0
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses | 0 | 0
Held-to-maturity Securities, 12 Months or More, Fair Value | 9,066 | 8,668
Held-to-maturity Securities, 12 Months or More,Unrealized Losses | (1,692) | (1,762)
Held-to-maturity Securities, Total Fair Value | 9,066 | 8,668
Held-to-maturity Securities, Total Unrealized Losses | (1,692) | (1,762)
Private label residential mortgage and asset backed securities |  |
Schedule of Available-for-sale Securities |  |
Debt securities, amortized cost | 372,610 | 411,441
Less than 12 Months, Fair Value | 0 | 126,284
12 Months or More, Fair Value | 323,655 | 229,152
Total Fair Value | 323,655 | 355,436
Less than 12 Months, Unrealized Losses | 0 | (14,529)
12 Months or More, Unrealized Losses | (48,047) | (41,384)
Total Unrealized Losses | (48,047) | (55,913)
Held-to-maturity Securities, Less than 12 Months, Fair Value | 0 | 19,393
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses | 0 | (1,916)
Held-to-maturity Securities, 12 Months or More, Fair Value | 48,635 | 31,367
Held-to-maturity Securities, 12 Months or More,Unrealized Losses | (5,944) | (4,015)
Held-to-maturity Securities, Total Fair Value | 48,635 | 50,760
Held-to-maturity Securities, Total Unrealized Losses | (5,944) | (5,931)
Corporate Debt Securities |  |
Schedule of Available-for-sale Securities |  |
Debt securities, amortized cost |  | 0
Held-to-maturity Securities, Less than 12 Months, Fair Value | 0 | 23,997
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses | 0 | (1,561)
Held-to-maturity Securities, 12 Months or More, Fair Value | 41,350 | 18,919
Held-to-maturity Securities, 12 Months or More,Unrealized Losses | (4,736) | (1,505)
Held-to-maturity Securities, Total Fair Value | 41,350 | 42,916
Held-to-maturity Securities, Total Unrealized Losses | (4,736) | (3,066)
US Treasury Securities |  |
Schedule of Available-for-sale Securities |  |
Debt securities, amortized cost | 9,990 | 9,990
Less than 12 Months, Fair Value | 0 | 0
12 Months or More, Fair Value | 8,954 | 8,707
Total Fair Value | 8,954 | 8,707
Less than 12 Months, Unrealized Losses | 0 | 0
12 Months or More, Unrealized Losses | (1,036) | (1,283)
Total Unrealized Losses | $ (1,036) | $ (1,283)

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