SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Weighted-Average Common Shares Outstanding Assuming Dilution) (Details) - shares shares in Thousands |
3 Months Ended | |
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Mar. 31, 2020 |
Mar. 31, 2019 |
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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] | ||
Weighted-average common shares outstanding | 132,567 | 132,043 |
Dilutive effect of Stock-Only Stock Appreciation Rights | 345 | 742 |
Dilutive effect of Other stock compensation plans | 347 | 269 |
Weighted-average common shares outstanding, assuming dilution | 133,259 | 133,054 |