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INVESTMENT SECURITIES - Amortized Cost (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost | $ 111,809 | $ 118,132
Gross unrealized gains | 3,944 | 1,951
Gross unrealized losses | (163) | (194)
Securities available for sale, fair value | 115,590 | 119,889
U.S. Treasuries |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost |  | 999
Securities available for sale, fair value |  | 999
U.S. Government Agencies |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost | 5,523 | 10,033
Gross unrealized gains | 25 | 64
Gross unrealized losses | (4) | (7)
Securities available for sale, fair value | 5,544 | 10,090
Municipal securities |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost | 15,992 | 17,888
Gross unrealized gains | 695 | 408
Gross unrealized losses |  | (5)
Securities available for sale, fair value | 16,687 | 18,291
Mortgage-backed securities |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost | 34,567 | 42,931
Gross unrealized gains | 2,033 | 860
Gross unrealized losses | (22) | (48)
Securities available for sale, fair value | 36,578 | 43,743
Collateralized mortgage obligation |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost | 26,649 | 28,197
Gross unrealized gains | 1,054 | 476
Gross unrealized losses | (8) | (68)
Securities available for sale, fair value | 27,695 | 28,605
SBA securities |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost | 7,661 | 9,550
Gross unrealized gains | 52 | 2
Gross unrealized losses | (46) | (66)
Securities available for sale, fair value | 7,667 | 9,486
Corporate Bonds |  |
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] |  |
Amortized cost | 21,417 | 8,534
Gross unrealized gains | 85 | 141
Gross unrealized losses | (83) |
Securities available for sale, fair value | $ 21,419 | $ 8,675

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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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