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FAIR VALUE OF ASSETS AND LIABILITIES (Level 3 Assets and Liabilities) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) bond security | Dec. 31, 2020 USD ($)
Additional disclosures |  |
Transfers of financial assets (liability) into Level 3 | $ 0 |
Transfers of financial assets (liability) out of Level 3 | 0 |
Mortgage revenue bonds |  |
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis |  |
Aggregate fair value / Balance at the beginning of the period | 12,326,000 | $ 11,255,000
Principal payments received | (2,863,000) | (428,000)
Purchases | 0 | 989,000
Unrealized net gain included in other comprehensive income | (844,000) | 510,000
Aggregate fair value / Balance at the end of the period | $ 8,619,000 | 12,326,000
Additional disclosures |  |
Number of investment securities held | bond | 2 |
Mortgage revenue bonds | States and political subdivisions |  |
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis |  |
Aggregate fair value / Balance at the beginning of the period | $ 11,337,000 | 11,255,000
Principal payments received | (2,841,000) | (428,000)
Purchases | 0 | 0
Unrealized net gain included in other comprehensive income | (815,000) | 510,000
Aggregate fair value / Balance at the end of the period | 7,681,000 | 11,337,000
Mortgage revenue bonds | Residential - Non-Government Agencies |  |
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis |  |
Aggregate fair value / Balance at the beginning of the period | 989,000 | 0
Principal payments received | (22,000) | 0
Purchases | 0 | 989,000
Unrealized net gain included in other comprehensive income | (29,000) | 0
Aggregate fair value / Balance at the end of the period | $ 938,000 | $ 989,000
Additional disclosures |  |
Number of investment securities held | security | 2 |
Measurement Input, Discount Rate [Member] | Mortgage revenue bonds | Weighted average |  |
Fair Value Of Financial Assets And Liabilities |  |
Debt Instrument, Measurement Input | 0.0346 |

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- Definition Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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