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SECURITIES (Debt Securities, Held-to-Maturity, Allowance for Credit Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | $ (94) |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | (94) |
New credit standard (ASC 326) - impact in year of adoption |  | $ 11,215
Ending Balance | 98 |
U.S. Government and agency obligations |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | 0 | 0
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0
New credit standard (ASC 326) - impact in year of adoption |  | 0
Provision for credit losses | 0 | 0
Ending Balance | 0 | 0
Municipal bonds |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | 59 | 0
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 59 | 61
New credit standard (ASC 326) - impact in year of adoption |  | 28
Provision for credit losses | 2 | 33
Ending Balance | 61 | 61
Corporate bonds |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | 35 | 0
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 35 | 37
New credit standard (ASC 326) - impact in year of adoption |  | 35
Provision for credit losses | 2 | 2
Ending Balance | 37 | 37
Mortgage-backed or related securities |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | 0 | 0
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 0 | 0
New credit standard (ASC 326) - impact in year of adoption |  | 0
Provision for credit losses | 0 | 0
Ending Balance | 0 | 0
Held-to-maturity Securities |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |
Beginning Balance | (94) | 0
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 98 | 98
New credit standard (ASC 326) - impact in year of adoption |  | 63
Provision for credit losses | 4 | 35
Ending Balance | $ 98 | $ 98

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- Definition Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aaa) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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- Definition Amount of increase (decrease) in allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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