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Investment Securities - Investment Securities by Classification Type and Maturity (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
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Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 883,832,000 | $ 770,195,000
Gross Unrealized Gains | 15,341,000 | 32,521,000
Gross Unrealized Losses | (4,838,000) | (553,000)
Fair Value | 894,335,000 | 802,163,000
Total | 383,393,000 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 120,000 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (7,182,000) |
Total | 376,331,000 | 0
U.S. government and agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 21,494,000 | 44,713,000
Gross Unrealized Gains | 55,000 | 947,000
Gross Unrealized Losses | (176,000) | 0
Fair Value | 21,373,000 | 45,660,000
Total | 141,011,000 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 120,000 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (1,768,000) |
Total | 139,363,000 |
Municipal securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 213,158,000 | 197,634,000
Gross Unrealized Gains | 8,908,000 | 12,561,000
Gross Unrealized Losses | (854,000) | (227,000)
Fair Value | 221,212,000 | 209,968,000
Residential CMO and MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 307,366,000 | 196,956,000
Gross Unrealized Gains | 2,111,000 | 5,125,000
Gross Unrealized Losses | (2,593,000) | (209,000)
Fair Value | 306,884,000 | 201,872,000
Total | 24,529,000 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (153,000) |
Total | 24,376,000 |
Commercial CMO and MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 313,169,000 | 290,638,000
Gross Unrealized Gains | 3,891,000 | 13,198,000
Gross Unrealized Losses | (1,199,000) | (90,000)
Fair Value | 315,861,000 | 303,746,000
Total | 217,853,000 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (5,261,000) |
Total | 212,592,000 |
Corporate obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,007,000 | 10,971,000
Gross Unrealized Gains | 7,000 | 125,000
Gross Unrealized Losses | 0 | 0
Fair Value | 2,014,000 | 11,096,000
Other asset-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 26,638,000 | 29,283,000
Gross Unrealized Gains | 369,000 | 565,000
Gross Unrealized Losses | (16,000) | (27,000)
Fair Value | $ 26,991,000 | $ 29,821,000

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