			December 31,

	Three Months Ended March 31, 2013		December 31,
	Three Months Ended March 31, 2013		2012		2011		2010		2009		2008
	(dollars in thousands)
Earnings:
Income before income taxes and before adjustment for noncontrolling interest	$	12,460	$	48,320	$	19,420	$	27,038	$	35,563	$	22,207
Plus fixed charges		10,784		42,973		36,604		25,894		16,887		22,577

Total earnings	$	23,244	$	91,293	$	56,024	$	52,932	$	52,450	$	44,784

Fixed Charges:
Interest expense	$	8,916	$	36,268	$	31,209	$	22,310	$	15,188	$	20,799
Amortization of deferred financing fees		1,571		5,753		4,723		3,007		1,169		938
Interest portion of rental expense		297		952		672		577		530		840

Total fixed charges	$	10,784	$	42,973	$	36,604	$	25,894	$	16,887	$	22,577

Ratio of earnings to fixed charges(a)		2.16		2.12		1.53		2.04		3.11		1.98

(a): We calculated the ratio of earnings to fixed charges by dividing earnings by fixed charges. Earnings consist of income from continuing operations before income taxes and before adjustment for noncontrolling interest, plus fixed charges. Fixed charges consist of (i) interest expense, including accretion of senior notes discount, (ii) amortization of deferred financing fees and (iii) the portion of rental expense we estimate to be representative of the interest factor in rent expense