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Investment Securities - Held-to-Maturity Amortized Cost and Fair Value (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | $ 972,207,000 | $ 342,222,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 972,207,000 | 342,222,000
Held-to-maturity, gross unrealized gains | 70,000 | 3,400,000
Held-to-maturity, gross unrealized losses | (127,038,000) | (2,867,000)
Held to maturity, fair value | 845,239,000 | 342,755,000
Accrued interest | 3,700,000 | 1,100,000
MBS pass-through securities issued by FHLMC, FNMA and GNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 331,281,000 | 126,990,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 331,281,000 | 126,990,000
Held-to-maturity, gross unrealized gains | 0 | 2,110,000
Held-to-maturity, gross unrealized losses | (50,147,000) | (712,000)
Held to maturity, fair value | 281,134,000 | 128,388,000
CMOs issued by FHLMC |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 235,971,000 | 106,851,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 235,971,000 | 106,851,000
Held-to-maturity, gross unrealized gains | 59,000 | 668,000
Held-to-maturity, gross unrealized losses | (29,503,000) | (1,045,000)
Held to maturity, fair value | 206,527,000 | 106,474,000
CMOs issued by FNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 111,904,000 | 4,866,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 111,904,000 | 4,866,000
Held-to-maturity, gross unrealized gains | 0 | 128,000
Held-to-maturity, gross unrealized losses | (5,419,000) | 0
Held to maturity, fair value | 106,485,000 | 4,994,000
CMOs issued by GNMA |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 52,356,000 |
Allowance for Credit Losses | 0 |
Net Carrying Amount | 52,356,000 |
Held-to-maturity, gross unrealized gains | 11,000 |
Held-to-maturity, gross unrealized losses | (3,076,000) |
Held to maturity, fair value | 49,291,000 |
SBA-backed securities |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 2,372,000 | 4,840,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 2,372,000 | 4,840,000
Held-to-maturity, gross unrealized gains | 0 | 198,000
Held-to-maturity, gross unrealized losses | (133,000) | 0
Held to maturity, fair value | 2,239,000 | 5,038,000
Debentures of government sponsored agencies |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 145,823,000 | 51,472,000
Allowance for Credit Losses |  |
Net Carrying Amount | 145,823,000 | 51,472,000
Held-to-maturity, gross unrealized gains | 0 | 0
Held-to-maturity, gross unrealized losses | (26,467,000) | (901,000)
Held to maturity, fair value | 119,356,000 | 50,571,000
Obligations of state and political subdivisions |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 62,500,000 | 47,203,000
Allowance for Credit Losses | 0 | 0
Net Carrying Amount | 62,500,000 | 47,203,000
Held-to-maturity, gross unrealized gains | 0 | 296,000
Held-to-maturity, gross unrealized losses | (10,741,000) | (209,000)
Held to maturity, fair value | 51,759,000 | 47,290,000
Corporate bonds |  |
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items] |  |
Held to maturity, amortized cost | 30,000,000 | $ 0
Allowance for Credit Losses | 0 |
Net Carrying Amount | 30,000,000 |
Held-to-maturity, gross unrealized gains | 0 |
Held-to-maturity, gross unrealized losses | (1,552,000) |
Held to maturity, fair value | $ 28,448,000 |

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