Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO COMBINED FIXED CHARGES

	Three Months Ended March 31,					Year Ended December 31,
	2013			2012		2012			2011			2010			2009			2008
Pre-tax income (loss) from continuing operations	$	(10,008	)	$	5,718	$	14,951		$	2,842		$	(13,096	)	$	(10,969	)	$	(40,465	)
Add:
Fixed Charges	$	19,169			13,206		57,019			52,724			54,456			51,300			57,896
Amortization of capitalized interest		99			97		382			388			216			320			438
Distributed income of equity investees		82			98		440			426			190
Interest capitalized		—			—		(119	)		(28	)		(24	)		—			18
Total adjusted earnings (loss) available for payment of fixed charges	$	9,342		$	19,119	$	72,673		$	56,352		$	41,742		$	40,651		$	17,887
Fixed Charges:
Interest expense	$	11,935			7,667		34,411		$	30,688		$	32,661		$	30,999		$	38,299
Amortization of debt related expenses		363			596		1,593			3,425			3,324			2,068			2,420
Portion of rental expense representing interest		6,871			4,943		21,015			18,611			18,471			18,233			17,177
Total fixed charges	$	19,169			13,206		57,019		$	52,724		$	54,456		$	51,300		$	57,896
Ratio of earnings to fixed charges (1)		0.49 x			1.45 x		1.27 x			1.07 x			0.77 x			0.79 x			0.31 x

(1) Our earnings were inadequate to cover fixed charges by $9.8 million, $12.7 million, $10.6 million and $40.0 million for the three months ended March 31, 2013 and the years ended December 31, 2010, 2009 and 2008, respectively.