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INVESTMENT SECURITIES (Schedule of amortized cost and fair value of securities available-for-sale) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Investment securities available for sale, at fair value, substantially restricted | $ 266,096 | $ 234,942
Available-for-sale Securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 262,749 | 233,186
Gross Unrealized/Unrecognized Gains | 3,596 | 1,891
Gross Unrealized/Unrecognized Losses | (249) | (135)
Investment securities available for sale, at fair value, substantially restricted | 266,096 | 234,942
Available-for-sale Securities | Residential mortgage-backed securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 192,163 | 175,902
Gross Unrealized/Unrecognized Gains | 2,599 | 1,478
Gross Unrealized/Unrecognized Losses | (74) | (117)
Investment securities available for sale, at fair value, substantially restricted | 194,688 | 177,263
Available-for-sale Securities | Commercial mortgage-backed securities issued by U.S. government sponsored entities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 32,589 | 32,284
Gross Unrealized/Unrecognized Gains | 997 | 206
Gross Unrealized/Unrecognized Losses | (94) | (18)
Investment securities available for sale, at fair value, substantially restricted | 33,492 | 32,472
Available-for-sale Securities | U.S. Government agency securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 37,997 | 25,000
Gross Unrealized/Unrecognized Gains |  | 207
Gross Unrealized/Unrecognized Losses | (81) |
Investment securities available for sale, at fair value, substantially restricted | $ 37,916 | $ 25,207

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
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