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Investment Securities - Schedule of Held-to-Maturity Amortized Cost and Fair Value (Details) - USD ($) | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | $ 904,610,000 | $ 925,198,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 904,610,000 | 925,198,000
Held-to-maturity, gross unrealized gains | 0 | 75,000
Held-to-maturity, gross unrealized losses | (121,213,000) | (110,443,000)
Total | 783,397,000 | 814,830,000
Accrued interest | 3,500,000 | 3,600,000
MBS pass-through securities issued by FHLMC, FNMA and GNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 295,940,000 | 306,261,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 295,940,000 | 306,261,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (48,998,000) | (44,396,000)
Total | 246,942,000 | 261,865,000
CMOs issued by FHLMC |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 222,619,000 | 226,416,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 222,619,000 | 226,416,000
Held-to-maturity, gross unrealized gains | 0 | 28,000
Held-to-maturity, gross unrealized losses | (27,340,000) | (24,869,000)
Total | 195,279,000 | 201,575,000
CMOs issued by FNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 95,887,000 | 101,502,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 95,887,000 | 101,502,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (6,307,000) | (4,779,000)
Total | 89,580,000 | 96,723,000
CMOs issued by GNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 50,437,000 | 51,006,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 50,437,000 | 51,006,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (5,680,000) | (5,235,000)
Total | 44,757,000 | 45,771,000
SBA-backed securities |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 1,652,000 | 1,853,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 1,652,000 | 1,853,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (91,000) | (90,000)
Total | 1,561,000 | 1,763,000
Debentures of government- sponsored agencies |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 146,277,000 | 146,126,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 146,277,000 | 146,126,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (23,209,000) | (21,994,000)
Total | 123,068,000 | 124,132,000
Obligations of state and political subdivisions |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 61,798,000 | 62,034,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 61,798,000 | 62,034,000
Held-to-maturity, gross unrealized gains | 0 | 47,000
Held-to-maturity, gross unrealized losses | (8,391,000) | (7,884,000)
Total | 53,407,000 | 54,197,000
Corporate bonds |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 30,000,000 | 30,000,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 30,000,000 | 30,000,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (1,197,000) | (1,196,000)
Total | $ 28,803,000 | $ 28,804,000

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