REVENUE (Schedule of Topic 606 Impact) (Details) - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues		$ 138,600
Lease operating expenses		64,100
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Lease operating expenses		2,937
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Lease operating expenses		61,163
Predecessor
Revenues	$ 111,031
Lease operating expenses	45,372		$ 101,591	$ 103,371
Predecessor | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Lease operating expenses	2,054
Predecessor | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Lease operating expenses	43,318
Oil And Gas [Member]
Revenues		137,169
Oil And Gas [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenues		2,937
Oil And Gas [Member] | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues		$ 134,232
Oil And Gas [Member] | Predecessor
Revenues	110,307
Oil And Gas [Member] | Predecessor | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenues	2,054
Oil And Gas [Member] | Predecessor | Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues	$ 108,253