TRANSACTIONS WITH RELATED PARTIES - Schedule of Cash Distributions (Details) - USD ($) $ in Thousands			6 Months Ended
	May 12, 2017	Feb. 17, 2017	Jun. 30, 2017
USDG
Related Party Transaction [Line Items]
Amount Paid to USDG	$ 3,872	$ 3,814	$ 7,686
USD Group LLC
Related Party Transaction [Line Items]
Amount Paid to USD Partners GP LLC	$ 170	$ 152	$ 322