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INVESTMENT SECURITIES (Schedule of Amortized Cost and Approximate Fair Value of Securities Available for Sale) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Securities Available for Sale: |  |
Amortized Cost | $ 828,282 | $ 883,874
Gross Unrealized Gains | 3,534 | 1,191
Gross Unrealized Losses | (75,238) | (100,521)
Fair Value | 756,578 | 784,544
Securities Held to Maturity: |  |
Amortized Cost | 97,414 | 101,635
Gross Unrealized Gains | 2 |
Gross Unrealized Losses | (9,157) | (12,985)
Fair Value | 88,259 | 88,650
U.S. Government-Sponsored Agencies [Member] |  |
Securities Available for Sale: |  |
Amortized Cost | 244,828 | 244,813
Gross Unrealized Losses | (35,524) | (47,899)
Fair Value | 209,304 | 196,914
Securities Held to Maturity: |  |
Amortized Cost | 40,000 | 40,000
Gross Unrealized Losses | (1,429) | (2,666)
Fair Value | 38,571 | 37,334
Mortgage-Backed Securities-Residential [Member] |  |
Securities Available for Sale: |  |
Amortized Cost | 547,769 | 595,789
Gross Unrealized Gains | 3,325 | 1,086
Gross Unrealized Losses | (36,861) | (48,263)
Fair Value | 514,233 | 548,612
Securities Held to Maturity: |  |
Amortized Cost | 57,414 | 61,635
Gross Unrealized Gains | 2 |
Gross Unrealized Losses | (7,728) | (10,319)
Fair Value | 49,688 | 51,316
SBA Pool Securities [Member] |  |
Securities Available for Sale: |  |
Amortized Cost | 20,185 | 27,772
Gross Unrealized Losses | (2,361) | (3,290)
Fair Value | 17,824 | 24,482
Corporate Bond [Member] |  |
Securities Available for Sale: |  |
Amortized Cost | 15,500 | 15,500
Gross Unrealized Gains | 209 | 105
Gross Unrealized Losses | (492) | (1,069)
Fair Value | $ 15,217 | $ 14,536

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