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SECURITIES - Summary of available for sale securities with unrealized losses (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Unrealized Losses | $ (2,275) | $ (63)
Estimated Fair Value | 153,211 | 7,525
Unrealized Losses | (368) | (148)
Estimated Fair Value | 11,899 | 10,442
Unrealized Losses | (2,643) | (211)
Estimated Fair Value | 165,110 | 17,967
U.S. Treasury Note |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Unrealized Losses | (105) |
Estimated Fair Value | 16,814 |
Unrealized Losses | 0 |
Estimated Fair Value | 0 |
Unrealized Losses | (105) |
Estimated Fair Value | 16,814 |
Corporate Bonds |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Unrealized Losses | (290) |
Estimated Fair Value | 17,183 |
Unrealized Losses | 0 |
Estimated Fair Value | 0 |
Unrealized Losses | (290) |
Estimated Fair Value | 17,183 |
U.S. Government agency obligations |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Unrealized Losses | (49) | (54)
Estimated Fair Value | 9,951 | 3,559
Unrealized Losses | (130) | (147)
Estimated Fair Value | 7,980 | 10,014
Unrealized Losses | (179) | (201)
Estimated Fair Value | 17,931 | 13,573
Residential one-to-four family |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Unrealized Losses | (1,761) | (7)
Estimated Fair Value | 104,805 | 3,228
Unrealized Losses | (144) | (1)
Estimated Fair Value | 3,009 | 115
Unrealized Losses | (1,905) | (8)
Estimated Fair Value | 107,814 | 3,343
Multifamily |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Unrealized Losses | 0 | (2)
Estimated Fair Value | 0 | 738
Unrealized Losses | (94) | 0
Estimated Fair Value | 910 | 313
Unrealized Losses | (94) | (2)
Estimated Fair Value | 910 | $ 1,051
Asset-backed securities |  |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |  |
Unrealized Losses | (70) |
Estimated Fair Value | 4,458 |
Unrealized Losses | 0 |
Estimated Fair Value | 0 |
Unrealized Losses | (70) |
Estimated Fair Value | $ 4,458 |

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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