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Investment Securities - Schedule of Held-to-Maturity Amortized Cost and Fair Value (Details) - USD ($) | Sep. 30, 2024 | Dec. 31, 2023
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Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | $ 888,804,000 | $ 925,198,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 888,804,000 | 925,198,000
Held-to-maturity, gross unrealized gains | 127,000 | 75,000
Held-to-maturity, gross unrealized losses | (89,407,000) | (110,443,000)
Fair Value | 799,524,000 | 814,830,000
Accrued interest | 2,500,000 | 3,600,000
CMBS issued by FHLMC, FNMA and GNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 243,622,000 | 247,441,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 243,622,000 | 247,441,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (28,231,000) | (35,071,000)
Fair Value | 215,391,000 | 212,370,000
CMOs issued by FHLMC, FNMA and GNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 214,385,000 | 228,761,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 214,385,000 | 228,761,000
Held-to-maturity, gross unrealized gains | 97,000 | 28,000
Held-to-maturity, gross unrealized losses | (12,732,000) | (16,882,000)
Fair Value | 201,750,000 | 211,907,000
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 | 196,247,000 | 208,983,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 196,247,000 | 208,983,000
Held-to-maturity, gross unrealized gains | 24,000 | 0
Held-to-maturity, gross unrealized losses | (23,301,000) | (27,326,000)
Fair Value | 172,970,000 | 181,657,000
SBA-backed securities |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Debt securities, held-to-maturity | 1,514,000 | 1,853,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 1,514,000 | 1,853,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (43,000) | (90,000)
Fair Value | 1,471,000 | 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 | 141,357,000 | 146,126,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 141,357,000 | 146,126,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (17,775,000) | (21,994,000)
Fair Value | 123,582,000 | 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 | 61,679,000 | 62,034,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 61,679,000 | 62,034,000
Held-to-maturity, gross unrealized gains | 6,000 | 47,000
Held-to-maturity, gross unrealized losses | (6,698,000) | (7,884,000)
Fair Value | 54,987,000 | 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 | (627,000) | (1,196,000)
Fair Value | $ 29,373,000 | $ 28,804,000

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