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INVESTMENT SECURITIES - Continuous Unrealized Loss on Position (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | $ (95,493) | $ (2,503)
Less than 12 months, fair value | 1,187,577 | 181,901
12 months or more, gross unrealized losses | (35,604) | (822)
12 months or more, fair value | 146,230 | 15,712
Total gross unrealized losses | (131,097) | (3,325)
Total fair value | 1,333,807 | 197,613
Residential Mortgage Backed Securities |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | (8,845) | (38)
Less than 12 months, fair value | 191,398 | 5,324
12 months or more, gross unrealized losses | (1,338) | (300)
12 months or more, fair value | 5,763 | 2,406
Total gross unrealized losses | (10,183) | (338)
Total fair value | 197,161 | 7,730
Commercial Mortgage Backed Securities |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | (5,729) | (235)
Less than 12 months, fair value | 41,416 | 18,127
12 months or more, gross unrealized losses | (3,633) | 0
12 months or more, fair value | 14,619 | 0
Total gross unrealized losses | (9,362) | (235)
Total fair value | 56,035 | 18,127
Collateralized Residential Mortgage Obligations |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | (27,789) | (1,007)
Less than 12 months, fair value | 498,333 | 53,068
12 months or more, gross unrealized losses | (11,633) | (314)
12 months or more, fair value | 45,689 | 7,116
Total gross unrealized losses | (39,422) | (1,321)
Total fair value | 544,022 | 60,184
Collateralized Commercial Mortgage Obligations |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | (4,787) | (135)
Less than 12 months, fair value | 56,671 | 14,806
12 months or more, gross unrealized losses | (2,603) | (198)
12 months or more, fair value | 13,848 | 5,132
Total gross unrealized losses | (7,390) | (333)
Total fair value | 70,519 | 19,938
Municipal bonds |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | (44,513) | (914)
Less than 12 months, fair value | 350,918 | 64,237
12 months or more, gross unrealized losses | (13,326) | (10)
12 months or more, fair value | 46,377 | 1,058
Total gross unrealized losses | (57,839) | (924)
Total fair value | 397,295 | 65,295
Held-to-Maturity Securities |  |
Less than 12 months, Gross unrealized losses | (56) |
Less than 12 months, Fair value | 2,385 |
12 months or more, Gross unrealized losses | 0 |
12 months or more, Fair value | 0 |
HTM securities in unrealized loss position, gross unrealized losses | (56) |
HTM securities in unrealized loss position, gross unrealized losses, fair value | 2,385 |
Corporate debt securities |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | (3,801) | (1)
Less than 12 months, fair value | 32,871 | 3,164
12 months or more, gross unrealized losses | 0 | 0
12 months or more, fair value | 0 | 0
Total gross unrealized losses | (3,801) | (1)
Total fair value | 32,871 | 3,164
U.S. Treasury securities |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | 0 | (173)
Less than 12 months, fair value | 0 | 23,175
12 months or more, gross unrealized losses | (3,071) | 0
12 months or more, fair value | 19,934 | 0
Total gross unrealized losses | (3,071) | (173)
Total fair value | 19,934 | $ 23,175
Agency debentures |  |
Available-for-sale Securities |  |
Less than 12 months, gross unrealized losses | (29) |
Less than 12 months, fair value | 15,970 |
12 months or more, gross unrealized losses | 0 |
12 months or more, fair value | 0 |
Total gross unrealized losses | (29) |
Total fair value | $ 15,970 |

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