SUBSEQUENT EVENT (Details) - New Jersey Board of Public Utilities - USD ($)	1 Months Ended	9 Months Ended
	Oct. 31, 2016	Sep. 30, 2016
Subsequent Event [Line Items]
Base rate		$ 11,000,000
Remaining balance of prior AIRP investments		$ 74,500,000
Subsequent event
Subsequent Event [Line Items]
Approved request to extend Accelerated Infrastructure Replacement Program (AIRP) (up to)	5 years
Authorized investment for AIRP	$ 302,500,000.0