Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Years Ended December 31,															Nine Months Ended September 30,
	2012			2011			2010			2009			2008			2013			2012
	(in thousands, except ratios)
Fixed Charges:
Interest expense	$	119,265		$	102,069		$	69,534		$	41,823		$	20,856		$	83,309		$	89,932
Capitalized interest		—			—			—			—			—			—			—
Portion of rental expense which represents interest factor (1)		1,866			1,676			1,460			640			451			1,351			1,232
Total Fixed Charges	$	121,131		$	103,745		$	70,994		$	42,463		$	21,307		$	84,660		$	91,164
Earnings available for fixed charges:
Pretax loss from continuing operations		(190,679	)		(63,227	)		(24,638	)		(48,218	)		(27,171	)		(75,743	)		(34,413	)
Distributed equity income of affiliated companies		222			39			15			134			—			—			6
Add: Fixed charges		121,131			103,745			70,994			42,463			21,307			84,660			91,164
Total Earnings available for fixed charges	$	(69,326	)	$	40,557		$	46,371		$	(5,621	)	$	(5,864	)	$	8,917		$	56,757
Earnings for the period were insufficient to cover fixed charges by the following amounts:	$	(190,457	)	$	(63,188	)	$	(24,623	)	$	(48,084	)	$	(27,171	)	$	(75,743	)	$	(34,407	)
Ratio of earnings to fixed charges (2)		NM			NM			NM			NM			NM			NM			NM

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

(2) NM - Not meaningful