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INVESTMENT SECURITIES (Schedule of Securities with Unrealized Losses) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 USD ($) item | Dec. 31, 2020 USD ($) item
Marketable equity securities |  |
Number of securities of one issuer | item | 0 | 0
Impairment loss | $ 0 | $ 0
Equity securities |  |
Marketable equity securities |  |
Less than 12 Months, Estimated Fair Value | 2,281 |
Less than 12 Months, Unrealized/Unrecognized Losses | (27) |
Total, Estimated Fair Value | 2,281 |
Total, Unrealized Losses | (27) |
Available-for-sale Securities |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 325,695 | 83,964
Less than 12 Months, Unrealized/Unrecognized Losses | (5,954) | (248)
12 months or more, Estimated Fair Value | 383 | 385
12 months or more, Unrealized/Unrecognized Losses | (1) | (1)
Total, Estimated Fair Value | 326,078 | 84,349
Total, Unrealized/Unrecognized Losses | (5,955) | (249)
Residential mortgage-backed securities | Available-for-sale Securities |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 233,408 | 33,734
Less than 12 Months, Unrealized/Unrecognized Losses | (3,546) | (74)
Total, Estimated Fair Value | 233,408 | 33,734
Total, Unrealized/Unrecognized Losses | (3,546) | (74)
Commercial mortgage-backed securities | Available-for-sale Securities |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 9,520 | 12,314
Less than 12 Months, Unrealized/Unrecognized Losses | (270) | (93)
12 months or more, Estimated Fair Value | 383 | 385
12 months or more, Unrealized/Unrecognized Losses | (1) | (1)
Total, Estimated Fair Value | 9,903 | 12,699
Total, Unrealized/Unrecognized Losses | (271) | (94)
Asset-backed Securities | Available-for-sale Securities |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 4,974 |
Less than 12 Months, Unrealized/Unrecognized Losses | (29) |
Total, Estimated Fair Value | 4,974 |
Total, Unrealized/Unrecognized Losses | (29) |
U.S. Government agency securities | Available-for-sale Securities |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 66,423 | 37,916
Less than 12 Months, Unrealized/Unrecognized Losses | (1,570) | (81)
Total, Estimated Fair Value | 66,423 | 37,916
Total, Unrealized/Unrecognized Losses | (1,570) | $ (81)
Securities issued by states and political subdivisions in the U.S | Available-for-sale Securities |  |
Available-for-sale Securities |  |
Less than 12 Months, Estimated Fair Value | 11,370 |
Less than 12 Months, Unrealized/Unrecognized Losses | (539) |
Total, Estimated Fair Value | 11,370 |
Total, Unrealized/Unrecognized Losses | (539) |
CRA mutual fund | Equity securities |  |
Marketable equity securities |  |
Less than 12 Months, Estimated Fair Value | 2,281 |
Less than 12 Months, Unrealized/Unrecognized Losses | (27) |
Total, Estimated Fair Value | 2,281 |
Total, Unrealized Losses | $ (27) |

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