Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

(dollars in thousands)

													(Unaudited)
													Nine months ended
	Year ended December 31												September 30
	2007		2008		2009			2010			2011		2011		2012
Earnings
Pre-tax income		105,415		69,397		(18,121	)		(40,380	)		12,141		1,511		27,686
Fixed charges		39,926		42,193		35,756			33,284			32,988		24,729		26,910
Capitalized interest amortization		—		—		—			88			88		66		66
Less:
Interest capitalized		—		—		442			176			128		22		197
Total earnings		145,341		111,590		18,077			(6,832	)		45,345		26,328		54,859
Fixed Charges
Interest expense		36,771		38,255		31,339			29,076			28,727		21,607		23,668
Interest capitalized		—		—		442			176			128		22		197
Portion of rent estimated to represent the interest factor		3,155		3,938		3,975			4,032			4,133		3,100		3,045
Total fixed charges		39,926		42,193		35,756			33,284			32,988		24,729		26,910
Ratio (A)		3.64		2.64		—			—			1.37		1.06		2.04

(A) Due to the registrant’s loss, the ratio coverage was less than 1:1 in 2009 and 2010.

To achieve a coverage ratio of 1:1, the registrant would need additional pre-tax earnings of $17,679, and $40,116 in 2009 and 2010, respectively.