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Securities - Unrealized Loss Positions (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) security | Jun. 30, 2024 USD ($) security | Dec. 31, 2023 USD ($) security
Securities Available-for-Sale, Number of Securities |  |  |
Less than 12 months in an unrealized loss position | security | 40 | 40 | 14
Greater than 12 months in an unrealized loss position | security | 337 | 337 | 353
Total | 377 | 377 | 367
Securities Available-for-Sale, Unrealized Losses |  |  |
Less than 12 months in an unrealized loss position | $ 844,000 | $ 844,000 | $ 145,000
Greater than 12 months in an unrealized loss position | 82,918,000 | 82,918,000 | 85,825,000
Total | 83,762,000 | 83,762,000 | 85,970,000
Securities Available-for-Sale, Fair Value |  |  |
Less than 12 months in an unrealized loss position | 153,920,000 | 153,920,000 | 28,708,000
Greater than 12 months in an unrealized loss position | 793,910,000 | 793,910,000 | 1,030,120,000
Total | 947,830,000 | $ 947,830,000 | 1,058,828,000
Effective duration (in years) |  | 3 years |
Credit losses were determined | 0 | $ 0 | $ 0
Provision for credit losses on securities | $ 0 |  |
U.S. Treasury |  |  |
Securities Available-for-Sale, Number of Securities |  |  |
Less than 12 months in an unrealized loss position | security | 2 | 2 |
Greater than 12 months in an unrealized loss position | security | 2 | 2 | 4
Total | 4 | 4 | 4
Securities Available-for-Sale, Unrealized Losses |  |  |
Less than 12 months in an unrealized loss position | $ 12,000 | $ 12,000 |
Greater than 12 months in an unrealized loss position | 2,475,000 | 2,475,000 | $ 5,028,000
Total | 2,487,000 | 2,487,000 | 5,028,000
Securities Available-for-Sale, Fair Value |  |  |
Less than 12 months in an unrealized loss position | 29,806,000 | 29,806,000 |
Greater than 12 months in an unrealized loss position | 97,328,000 | 97,328,000 | 169,574,000
Total | $ 127,134,000 | $ 127,134,000 | $ 169,574,000
U.S. government agencies |  |  |
Securities Available-for-Sale, Number of Securities |  |  |
Greater than 12 months in an unrealized loss position | security | 8 | 8 | 9
Total | 8 | 8 | 9
Securities Available-for-Sale, Unrealized Losses |  |  |
Greater than 12 months in an unrealized loss position | $ 2,355,000 | $ 2,355,000 | $ 3,052,000
Total | 2,355,000 | 2,355,000 | 3,052,000
Securities Available-for-Sale, Fair Value |  |  |
Greater than 12 months in an unrealized loss position | 37,298,000 | 37,298,000 | 56,959,000
Total | $ 37,298,000 | $ 37,298,000 | $ 56,959,000
Mortgage Backed Securities, Issued by US Government Agencies |  |  |
Securities Available-for-Sale, Number of Securities |  |  |
Greater than 12 months in an unrealized loss position | security | 128 | 128 | 128
Total | 128 | 128 | 128
Securities Available-for-Sale, Unrealized Losses |  |  |
Greater than 12 months in an unrealized loss position | $ 12,618,000 | $ 12,618,000 | $ 12,122,000
Total | 12,618,000 | 12,618,000 | 12,122,000
Securities Available-for-Sale, Fair Value |  |  |
Greater than 12 months in an unrealized loss position | 96,872,000 | 96,872,000 | 106,370,000
Total | $ 96,872,000 | $ 96,872,000 | $ 106,370,000
States and political subdivisions |  |  |
Securities Available-for-Sale, Number of Securities |  |  |
Less than 12 months in an unrealized loss position | security | 33 | 33 | 12
Greater than 12 months in an unrealized loss position | security | 35 | 35 | 25
Total | 68 | 68 | 37
Securities Available-for-Sale, Unrealized Losses |  |  |
Less than 12 months in an unrealized loss position | $ 763,000 | $ 763,000 | $ 137,000
Greater than 12 months in an unrealized loss position | 11,815,000 | 11,815,000 | 10,195,000
Total | 12,578,000 | 12,578,000 | 10,332,000
Securities Available-for-Sale, Fair Value |  |  |
Less than 12 months in an unrealized loss position | 86,106,000 | 86,106,000 | 27,974,000
Greater than 12 months in an unrealized loss position | 125,519,000 | 125,519,000 | 106,138,000
Total | $ 211,625,000 | $ 211,625,000 | $ 134,112,000
Collateralized mortgage obligations |  |  |
Securities Available-for-Sale, Number of Securities |  |  |
Less than 12 months in an unrealized loss position | security |  |  | 2
Greater than 12 months in an unrealized loss position | security | 142 | 142 | 143
Total | 142 | 142 | 145
Securities Available-for-Sale, Unrealized Losses |  |  |
Less than 12 months in an unrealized loss position |  |  | $ 8,000
Greater than 12 months in an unrealized loss position | $ 50,889,000 | $ 50,889,000 | 50,856,000
Total | 50,889,000 | 50,889,000 | 50,864,000
Securities Available-for-Sale, Fair Value |  |  |
Less than 12 months in an unrealized loss position |  |  | 734,000
Greater than 12 months in an unrealized loss position | 349,308,000 | 349,308,000 | 376,236,000
Total | $ 349,308,000 | $ 349,308,000 | $ 376,970,000
Asset-backed Securities |  |  |
Securities Available-for-Sale, Number of Securities |  |  |
Less than 12 months in an unrealized loss position | security | 2 | 2 |
Greater than 12 months in an unrealized loss position | security | 18 | 18 | 19
Total | 20 | 20 | 19
Securities Available-for-Sale, Unrealized Losses |  |  |
Less than 12 months in an unrealized loss position | $ 10,000 | $ 10,000 |
Greater than 12 months in an unrealized loss position | 2,753,000 | 2,753,000 | $ 3,222,000
Total | 2,763,000 | 2,763,000 | 3,222,000
Securities Available-for-Sale, Fair Value |  |  |
Less than 12 months in an unrealized loss position | 5,064,000 | 5,064,000 |
Greater than 12 months in an unrealized loss position | 59,306,000 | 59,306,000 | 63,941,000
Total | $ 64,370,000 | $ 64,370,000 | $ 63,941,000
Collateralized loan obligations. |  |  |
Securities Available-for-Sale, Number of Securities |  |  |
Less than 12 months in an unrealized loss position | security | 3 | 3 |
Greater than 12 months in an unrealized loss position | security | 4 | 4 | 25
Total | 7 | 7 | 25
Securities Available-for-Sale, Unrealized Losses |  |  |
Less than 12 months in an unrealized loss position | $ 59,000 | $ 59,000 |
Greater than 12 months in an unrealized loss position | 13,000 | 13,000 | $ 1,350,000
Total | 72,000 | 72,000 | 1,350,000
Securities Available-for-Sale, Fair Value |  |  |
Less than 12 months in an unrealized loss position | 32,944,000 | 32,944,000 |
Greater than 12 months in an unrealized loss position | 28,279,000 | 28,279,000 | 150,902,000
Total | $ 61,223,000 | $ 61,223,000 | $ 150,902,000

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