EARNINGS PER SHARE (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income (Numerator)
Net income	$ 65,000	$ 32,566	$ 138,304	$ 149,303
Net income attributable to noncontrolling interests	(1,125)	(1,929)	(3,264)	(16,820)
Numerator for basic and diluted earnings per common share available to common shareholders	$ 63,875	$ 30,637	$ 135,040	$ 132,483
Shares (Denominator)
Weighted-average common shares outstanding (shares)	102,083	102,245	102,069	99,210
Dilutive effect of stock-settled appreciation rights, restricted stock awards and outstanding stock options (shares)	706	810	829	963
Weighted-average common and common equivalent shares outstanding (shares)	102,789	103,055	102,898	100,173

Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.

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