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INVESTMENT SECURITIES - Schedule of Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Securities held-to-maturity: |  |
Amortized Cost | $ 328,641 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (66,181) |
Fair Value | 262,460 |
Securities available-for-sale: |  |
Amortized Cost | 909,563 | $ 1,304,723
Gross Unrealized Gains | 32 | 18,324
Gross Unrealized Losses | (41,298) | (7,344)
Securities available-for-sale, carried at fair value | 868,297 | 1,315,703
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities |  |
Securities held-to-maturity: |  |
Amortized Cost | 153,033 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (29,807) |
Fair Value | 123,226 |
Securities available-for-sale: |  |
Amortized Cost | 40,431 | 190,382
Gross Unrealized Gains | 0 | 2,898
Gross Unrealized Losses | (225) | (1,311)
Securities available-for-sale, carried at fair value | 40,206 | 191,969
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations |  |
Securities held-to-maturity: |  |
Amortized Cost | 61,404 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (11,946) |
Fair Value | 49,458 |
Securities available-for-sale: |  |
Amortized Cost | 99,075 | 242,458
Gross Unrealized Gains | 0 | 1,171
Gross Unrealized Losses | (5,884) | (2,088)
Securities available-for-sale, carried at fair value | 93,191 | 241,541
Municipal securities |  |
Securities held-to-maturity: |  |
Amortized Cost | 114,204 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (24,428) |
Fair Value | 89,776 |
Securities available-for-sale: |  |
Amortized Cost |  | 117,913
Gross Unrealized Gains |  | 2,641
Gross Unrealized Losses |  | (1,539)
Securities available-for-sale, carried at fair value |  | 119,015
SBA loan pools securities |  |
Securities available-for-sale: |  |
Amortized Cost | 11,241 | 14,679
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (54) | (88)
Securities available-for-sale, carried at fair value | 11,187 | 14,591
Non-agency residential mortgage-backed securities |  |
Securities available-for-sale: |  |
Amortized Cost | 90,832 | 56,014
Gross Unrealized Gains | 0 | 11
Gross Unrealized Losses | (10,340) | 0
Securities available-for-sale, carried at fair value | 80,492 | 56,025
Collateralized loan obligations |  |
Securities available-for-sale: |  |
Amortized Cost | 492,203 | 521,275
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (15,600) | (2,311)
Securities available-for-sale, carried at fair value | 476,603 | 518,964
Corporate debt securities |  |
Securities available-for-sale: |  |
Amortized Cost | 175,781 | 162,002
Gross Unrealized Gains | 32 | 11,603
Gross Unrealized Losses | (9,195) | (7)
Securities available-for-sale, carried at fair value | $ 166,618 | $ 173,598

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