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INVESTMENT SECURITIES - Available-for-Sale Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Summary of amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale |  |
Amortized Cost | $ 179,744 | $ 190,344
Gross Unrealized Gains | 95 | 173
Gross Unrealized Losses | 24,096 | 24,526
Estimated Fair Value | 155,743 | 165,991
U.S. government agency obligations |  |
Summary of amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale |  |
Amortized Cost | 16,655 | 18,373
Gross Unrealized Gains | 77 | 173
Gross Unrealized Losses | 156 | 233
Estimated Fair Value | 16,576 | 18,313
Mortgage-backed securities |  |
Summary of amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale |  |
Amortized Cost | 91,091 | 97,458
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 17,611 | 18,848
Estimated Fair Value | 73,480 | 78,610
Corporate debt securities |  |
Summary of amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale |  |
Amortized Cost | 47,158 | 44,636
Gross Unrealized Gains | 6 | 0
Gross Unrealized Losses | 5,990 | 4,385
Estimated Fair Value | 41,174 | 40,251
Asset-backed securities |  |
Summary of amortized cost, estimated fair value and related unrealized gains and losses on securities available for sale |  |
Amortized Cost | 24,840 | 29,877
Gross Unrealized Gains | 12 | 0
Gross Unrealized Losses | 339 | 1,060
Estimated Fair Value | $ 24,513 | $ 28,817

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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://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of 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://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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