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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2017
INCOME TAXES |
Schedule of reconciliation of cash dividends paid with the dividends paid deduction | The following table reconciles cash dividends paid with the dividends paid deduction for the years indicated (amounts in thousands):
|  | 2017 Estimate |  | 2016 Actual |  | 2015 Actual |
Dividends paid |  | $ | 32,393 |  | $ | 29,135 |  | $ | 26,179 |
Dividend reinvestment plan(a) |  |  | 252 |  |  | 181 |  |  | 228 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 32,645 |  |  | 29,316 |  |  | 26,407 |
Less: Spillover dividends designated to previous year |  |  | (11,916 | ) |  | (15,209 | ) |  | (18,177 | )
Plus: Dividends designated from following year |  |  | 10,263 |  |  | 11,916 |  |  | 15,209 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Dividends paid deduction |  | $ | 30,992 |  | $ | 26,023 |  | $ | 23,439 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) | Reflects the up to 5% discount on common stock purchased through the dividend reinvestment plan.

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