OIL AND NATURAL GAS PROPERTIES (Tables)

12 Months Ended

Dec. 31, 2019

Extractive Industries [Abstract]

Schedule of capitalized costs of unproved properties excluded from amortization

The following table sets forth a summary of oil and natural gas property costs (net of divestitures) at December 31, 2019 and 2018:

	December 31,
	2019			2018
	(In thousands)
Oil and natural gas properties:
Proved	$	478,569		$	358,858
Unproved	109,590			169,863
Total oil and natural gas properties	588,159			528,721
Accumulated depletion, depreciation, amortization and impairment	(359,304		)	(98,342		)
Oil and natural gas properties, net	$	228,855		$	430,379

The following table sets forth a summary of costs withheld from amortization as of December 31, 2019:

	Year of Acquisition
	Total		2019		2018		2017
	(In thousands)
Unamortized costs:
Unproved leasehold costs	$	109,590	$	1,643	$	85,598	$	22,349
Total	$	109,590	$	1,643	$	85,598	$	22,349