COMMITMENTS AND CONTINGENCIES 7 (Details) - $ / claims	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Resolution Values Per Claim [Line Items]
Malignant claims	56,000	44,000	44,000	53,500	51,000
Nonmalignant claims	2,800	4,485	100	120	850