OTHER SUPPLEMENTAL INFORMATION (Schedule of Accounts Payable and Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	May 31, 2018	Dec. 31, 2017
Total	$ 26,146	$ 36,787
Predecessor
Lease operating expenses			$ 11,411
Production and ad valorem taxes			6,351
General and administrative expenses			3,331
Current portion of ARO			3,170
Costs for additions to oil and natural gas properties			12,748
Interest			5,820
Derivative settlements			573
Other			413
Total		$ 34,922	$ 43,817
Successor
Lease operating expenses	10,035
San Juan royalties	5,000
Production and ad valorem taxes	4,680
General and administrative expenses	3,321
Current portion of ARO	2,077
Costs for additions to oil and natural gas properties	419
Interest	12
Other	602
Total	$ 26,146