Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(In thousands)

	Successor														Predecessor
	Six months ended June 30				Year ended December 31,
	2017		2016		2016		2015		2014		2013		Period from November 17, through December 31, 2012		Period from January 1, through November 16, 2012
Fixed Charges:
Interest expense	$	108,639		92,865	$	197,965	$	161,339	$	147,511	$	114,476	$	12,645	$	106,620
Capitalized interest		—		—		—		—		—		—		—		—
Portion of rental expense which represents interest factor (1)		2,743		2,653		5,318		5,047		3,624		2,028		217		1,649
Total Fixed Charges		111,382		95,518		203,283		166,386		151,135		116,504		12,862		108,269
Earnings Available for Fixed Charges:
Pretax loss from continuing operations		(165,722)		(134,143)		(275,890)		(278,756)		(238,146)		(120,921)		(41,005)		(149,674)
Distributed equity income of affiliated companies		—		—		—		—		—		—		216		6
Add: Fixed Charges		111,382		95,518		203,283		166,386		151,135		116,504		12,862		108,269
Total earnings available for fixed charges	$	(54,340)		(38,625)	$	(72,607)	$	(112,370)	$	(87,011)	$	(4,417)	$	(27,927)	$	(41,399)
Earnings for the period were insufficient to cover fixed charges by the following amounts:	$	(165,722)		(134,413)		(275,890)		(278,756)		(238,146)		(120,921)		(40,789)		(149,668)
Ratio of earnings to fixed charges (2)		NM		NM		NM		NM		NM		NM		NM		NM

(1) Represents the portion of rental expense deemed to be attributable to interest

(2) NM - Not meaningful