INCENTIVE PLANS (Aggregate Intrinsic Values of Options Exercised) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
SOSARs [Member] | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Aggregate intrinsic value of SOSARs exercised | $ 74,838 | $ 49,248 | $ 13,758 |