SECURITIES (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details) - USD ($) $ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Schedule of Held-to-maturity Securities [Line Items] | ||
| Held-to-maturity Securities, Total | $ 555,144 | $ 492,272 |
| Gross Unrealized Gains | 48,359 | |
| Gross Unrealized Losses | 0 | |
| Held-to-maturity Securities, Fair Value | 603,503 | 499,501 |
| Obligations of states and political subdivisions | ||
| Schedule of Held-to-maturity Securities [Line Items] | ||
| Held-to-maturity Securities, Total | 545,148 | 492,272 |
| Gross Unrealized Gains | 48,274 | 7,375 |
| Gross Unrealized Losses | 0 | (146) |
| Held-to-maturity Securities, Fair Value | 593,422 | $ 499,501 |
| Mortgage-backed securities | ||
| Schedule of Held-to-maturity Securities [Line Items] | ||
| Held-to-maturity Securities, Total | 9,996 | |
| Gross Unrealized Gains | 85 | |
| Gross Unrealized Losses | 0 | |
| Held-to-maturity Securities, Fair Value | $ 10,081 |
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- Definition Amount of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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