Impairment of Assets

12 Months Ended

Dec. 31, 2018

Other Income and Expenses [Abstract]

Impairment of Assets

IMPAIRMENT OF ASSETS

	Successor		Predecessor
(in thousands)	February 9, 2018 Through December 31, 2018		January 1, 2018 Through February 8, 2018		Year Ended December 31, 2017		Year Ended December 31, 2016
Impairment of unproved properties	$	742,065	$	—	$	—	$	16
Impairment of proved properties	1,291,647		—		1,188		366
Total impairment of assets	$	2,033,712	$	—	$	1,188	$	382

In late fourth quarter of 2018, the combination of depressed prevailing oil and gas prices, changes to assumed spacing in conjunction with evolving views on the viability of multiple benches and reduced individual well expectations resulted in impairment charges of $2.0 billion to our proved and unproved oil and gas properties.