EQUITY (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
EQUITY [Abstract]
Common stock, par value	$ 1	$ 1	$ 1
Preferred stock issued	0
Number of shares held in treasury	0	0	0
Shares purchased and retired during the period	257,000	0	228,000
Cost of shares purchased and retired	$ 26,597,000		$ 21,475,000
Cash payment for stock repurchase	23,433,000	$ 0
Accrued liabilities for purchase and retirement of stock	$ 3,164,000	$ 0
Shares remaining under the current authorization repurchase program	2,926,416