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INVESTMENT SECURITIES (Schedule of Securities with Unrealized Losses) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) item | Dec. 31, 2021 USD ($) item
Held-to-maturity Securities |  |
Number of securities of one issuer | item | 0 | 0
Impairment loss | $ 0 | $ 0
Available-for-sale Securities. |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 320,856 | 477,140
Less than 12 Months, Unrealized/Unrecognized Losses | (25,866) | (11,075)
12 months or more, Estimated Fair Value | 181,002 | 53,509
12 months or more, Unrealized/Unrecognized Losses | (18,359) | (1,751)
Total, Estimated Fair Value | 501,858 | 530,649
Total, Unrealized/Unrecognized Losses | (44,225) | (12,826)
Held-to-maturity Securities |  |
Held-to-maturity Securities |  |
Less than 12 Months, Estimated Fair Value | 436,825 | 319,632
Less than 12 Months, Unrealized/Unrecognized Losses | (31,068) | (2,401)
Total, Estimated Fair Value | 436,825 | 319,632
Total, Unrealized Losses | (31,068) | (2,401)
Residential MBS |  |
Held-to-maturity Securities |  |
Less than 12 Months, Estimated Fair Value | 386,461 |
Less than 12 Months, Unrealized/Unrecognized Losses | (27,486) |
Total, Estimated Fair Value | 386,461 |
Total, Unrealized Losses | (27,486) |
Residential MBS | Available-for-sale Securities. |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 304,552 | 423,686
Less than 12 Months, Unrealized/Unrecognized Losses | (24,766) | (9,727)
12 months or more, Estimated Fair Value | 106,793 | 12,931
12 months or more, Unrealized/Unrecognized Losses | (11,575) | (738)
Total, Estimated Fair Value | 411,345 | 436,617
Total, Unrealized/Unrecognized Losses | (36,341) | (10,465)
Residential MBS | Held-to-maturity Securities |  |
Held-to-maturity Securities |  |
Less than 12 Months, Estimated Fair Value |  | 301,896
Less than 12 Months, Unrealized/Unrecognized Losses |  | (2,259)
Total, Estimated Fair Value |  | 301,896
Total, Unrealized Losses |  | (2,259)
Commercial MBS |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 5,595 |
Less than 12 Months, Unrealized/Unrecognized Losses | (410) |
12 months or more, Estimated Fair Value | 7,519 |
12 months or more, Unrealized/Unrecognized Losses | (640) |
Total, Estimated Fair Value | 13,114 |
Total, Unrealized/Unrecognized Losses | (1,050) |
Commercial MBS | Available-for-sale Securities. |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value |  | 11,202
Less than 12 Months, Unrealized/Unrecognized Losses |  | (296)
12 months or more, Estimated Fair Value |  | 3,511
12 months or more, Unrealized/Unrecognized Losses |  | (83)
Total, Estimated Fair Value |  | 14,713
Total, Unrealized/Unrecognized Losses |  | (379)
Commercial MBS | Held-to-maturity Securities |  |
Held-to-maturity Securities |  |
Less than 12 Months, Estimated Fair Value | 7,433 | 8,039
Less than 12 Months, Unrealized/Unrecognized Losses | (697) | (99)
Total, Estimated Fair Value | 7,433 | 8,039
Total, Unrealized Losses | (697) | (99)
Asset-backed Securities | Available-for-sale Securities. |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 4,415 | 4,613
Less than 12 Months, Unrealized/Unrecognized Losses | (62) | (22)
Total, Estimated Fair Value | 4,415 | 4,613
Total, Unrealized/Unrecognized Losses | (62) | (22)
U.S. Government agency securities | Available-for-sale Securities. |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value |  | 29,267
Less than 12 Months, Unrealized/Unrecognized Losses |  | (730)
12 months or more, Estimated Fair Value | 62,746 | 37,067
12 months or more, Unrealized/Unrecognized Losses | (5,249) | (930)
Total, Estimated Fair Value | 62,746 | 66,334
Total, Unrealized/Unrecognized Losses | (5,249) | (1,660)
U.S. Government agency securities | Held-to-maturity Securities |  |
Held-to-maturity Securities |  |
Less than 12 Months, Estimated Fair Value |  | 9,697
Less than 12 Months, Unrealized/Unrecognized Losses |  | (43)
Total, Estimated Fair Value |  | 9,697
Total, Unrealized Losses |  | (43)
U.S. State and Municipal securities |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 6,294 |
Less than 12 Months, Unrealized/Unrecognized Losses | (628) |
12 months or more, Estimated Fair Value | 3,944 |
12 months or more, Unrealized/Unrecognized Losses | (895) |
Total, Estimated Fair Value | 10,238 |
Total, Unrealized/Unrecognized Losses | (1,523) |
Held-to-maturity Securities |  |
Less than 12 Months, Estimated Fair Value | 14,442 |
Less than 12 Months, Unrealized/Unrecognized Losses | (1,553) |
Total, Estimated Fair Value | 14,442 |
Total, Unrealized Losses | (1,553) |
U.S. State and Municipal securities | Available-for-sale Securities. |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value |  | 8,372
Less than 12 Months, Unrealized/Unrecognized Losses |  | (300)
Total, Estimated Fair Value |  | 8,372
Total, Unrealized/Unrecognized Losses |  | $ (300)
US Treasury Securities |  |
Held-to-maturity Securities |  |
Less than 12 Months, Estimated Fair Value | 28,489 |
Less than 12 Months, Unrealized/Unrecognized Losses | (1,332) |
Total, Estimated Fair Value | 28,489 |
Total, Unrealized Losses | $ (1,332) |

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