SHARE INCENTIVE PLANS (Shares reserved for future issuance) (Details) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock issued during period, shares, employee stock ownership plan	568,876	491,968
Employee Stock Ownership Plan (ESOP), weighted average purchase price of shares purchased (in USD per share)	$ 38.83	$ 35.50