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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Assets
Asset transfers between levels	$ 0
Liabilities
Liability transfers between levels	0
Recurring | Total
Assets
Receivables from derivative contracts	31,866	$ 5,923
Liabilities
Liabilities from derivative contracts	643	16,920
Recurring | Level 2
Assets
Receivables from derivative contracts	31,866	5,923
Liabilities
Liabilities from derivative contracts	$ 643	16,920
Predecessor
Assets
Asset transfers between levels		0
Liabilities
Liability transfers between levels		$ 0

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