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SECURITIES (Securities Debt Maturities) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Investments, Debt and Equity Securities [Abstract] |  |
Trading Securities, Amortized Cost, Maturing in one year or less | $ 0 |
Trading Securities, Amortized Cost, Maturing after one year through five years | 0 |
Trading Securities, Amortized Cost, Maturing after five years through ten years | 0 |
Debt Securities, Trading, Debt Maturities, After Year Ten, Amortized Cost Basis | 27,203 |
Debt Securities, Trading, Amortized Cost | 27,203 | $ 27,203
Trading Securities, Fair Value, Maturing in one year or less | 0 |
Trading Securities, Fair Value, Maturing after one year through five years | 0 |
Trading Securities, Fair Value, Maturing after five years through ten years | 0 |
Debt Securities, Trading, Debt Maturities, After Year Ten, Fair Value | 25,268 |
Trading Securities, Fair Value | 25,268 | 28,694
Available-for-sale Securities, Amortized Cost, Maturing in one year or less | 0 |
Available-for-sale Securities, Amortized Cost, Maturing after one year through five years | 169,465 |
Available-for-sale Securities, Amortized Cost, Maturing after five years through ten years | 385,977 |
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 | 2,219,530 |
Debt Securities, Available-for-sale, Amortized Cost | 2,774,972 | 3,218,777
Available-for-sale Securities, Fair Value, Maturing in one year or less | 0 |
Available-for-sale Securities, Fair Value, Maturing after one year through five years | 151,453 |
Available-for-sale Securities, Fair Value, Maturing after five years through ten years | 334,298 |
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 1,802,242 |
Debt Securities, Available-for-sale | 2,287,993 | 2,789,031
Held-to-maturity Securities, Amortized Cost, Maturing in one year or less | 17,239 |
Held-to-maturity Securities, Amortized Cost, Maturing after one year through five years | 19,702 |
Held-to-maturity Securities, Amortized Cost, Maturing after five years through ten years | 25,857 |
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 | 1,019,707 |
Held-to-maturity Securities, Amortized Cost | 1,082,505 | 1,117,967
Held-to-maturity Securities, Fair Value, Maturing in one year or less | 16,820 |
Held-to-maturity Securities, Fair Value, Maturing after one year through five years | 18,871 |
Held-to-maturity Securities, Fair Value, Maturing after five years through ten years | 24,234 |
Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 793,728 |
Debt Securities, Held-to-maturity, Fair Value | $ 853,653 | $ 942,180

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- Definition Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480832/942-320-50-3 + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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