SHARE-BASED COMPENSATION (Shares Authorized) (Details)	12 Months Ended
	Dec. 31, 2017 shares
Share-based Compensation
Number of shares granted	0
2017 Stock Plan
Share-based Compensation
Number of shares authorized	1,400,000
2012 Stock Plan
Share-based Compensation
Number of shares authorized	2,400,000
2012 Stock Plan | Stock Options
Share-based Compensation
Number of shares authorized	1,680,000
2012 Stock Plan | Stock and Stock Unit Awards
Share-based Compensation
Number of shares authorized	720,000
2009 Stock Plan
Share-based Compensation
Number of shares authorized	4,400,000
2009 Stock Plan | Stock Options
Share-based Compensation
Number of shares authorized	3,200,000
2009 Stock Plan | Stock Awards
Share-based Compensation
Number of shares authorized	1,200,000