Impairments

The following table summarizes impairment charges recorded during the periods presented:



	Successor				Predecessor
	Year Ended		September 13 Through		January 1 Through		Year Ended
	December 31,		December 31,		September 12,		December 31,
	2017		2016		2016		2015
Oil and gas properties	$	—	$	—	$	—	$	1,396,340
Other – tubular inventory and well materials	—		—		—		1,084
	$	—	$	—	$	—	$	1,397,424

The following table summarizes the aggregate fair values of the assets described below, by asset category and the classification of inputs within the fair value measurement hierarchy, at the respective dates of impairment:



	Fair Value Measurement		Level 1		Level 2		Level 3
Year Ended December 31, 2015 (Predecessor)
Long-lived assets held for use	$	311,886	$	—	$	—	$	311,886

We recorded no impairment charges during 2017 and 2016. The significant deterioration of commodity prices in 2015, as reflected in the future strip pricing as of December 31, 2015, triggered an impairment of approximately $1.4 billion to our proved and unproved Eagle Ford properties, which required us to reduce their carrying value to a fair value of approximately $312 million. In 2015, we also recorded an impairment charge of $1.1 million attributable to surplus tubular inventory and well materials.