Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Successor																		Predecessor
	Three months ended						Year ended
	March 31, 2016			March 31, 2015			December 31, 2015			December 31, 2014			December 31, 2013			Period from November 17, through December 31, 2012			Period from January 1, through November 16, 2012			Year Ended December 31, 2011
	(in thousands, except ratios)
Fixed Charges:
Interest expense	$	45,418		$	38,257		$	161,339		$	147,511		$	114,476		$	12,645		$	106,620		$	102,069
Capitalized interest		—			—			—			—			—			—			—			—
Portion of rental expense which represents interest factor (1)		1,324			1,195			5,047			3,624			2,028			217			1,649			1,676
Total Fixed Charges	$	46,742		$	39,452		$	166,386		$	151,135		$	116,504		$	12,862		$	108,269		$	103,745
Earnings available for fixed charges:
Pretax loss from continuing operations		(43,973	)		(47,916	)		(278,756	)		(238,146	)		(120,921	)		(41,005	)		(149,674	)		(63,227	)
Distributed equity income of affiliated companies		—			—			—			—			—			216			6			39
Add: Fixed charges		46,742			39,452			166,386			151,135			116,504			12,862			108,269			103,745
Total Earnings available for fixed charges	$	2,769		$	(8,464	)	$	(112,370	)	$	(87,011	)	$	(4,417	)	$	(27,927	)	$	(41,399	)	$	40,557
Earnings for the period were insufficient to cover fixed charges by the following amounts:	$	(43,973	)	$	(47,916	)	$	(278,756	)	$	(238,146	)	$	(120,921	)	$	(40,789	)	$	(149,668	)	$	(63,188	)
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