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INCOME TAXES, Effective Tax Rate Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Effective tax rate reconciliation [Abstract] |  |  |
Federal statutory income tax rate | 21.00% | 21.00% | 35.00%
Increase (reduction) in taxes resulting from [Abstract] |  |  |
Tax-exempt interest | (1.50%) | (1.60%) | (3.80%)
State income taxes, net of federal benefit | 2.50% | 3.40% | 2.50%
Stock-based compensation | (1.60%) | (0.90%) | (2.00%)
Federal deferred tax revaluation adjustment | 0.00% | 0.00% | (23.70%)
Federal tax credits | (1.30%) | (1.40%) | (1.50%)
Other, net | 0.10% | 0.30% | (0.70%)
Effective income tax rate | 19.20% | 20.80% | 5.80%

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- Definition Percentage of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to increase (decrease) in income tax rate and transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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