Exhibit 12

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Amounts in Thousands)

	Company
	Year Ended December 31, 2006		Year Ended December 31, 2007		Year Ended December 31, 2008		Year Ended December 31, 2009		Year Ended December 31, 2010		Six Months Ended June 30, 2011		Six Months Ended June 30, 2010
Pretax (loss) income from operations (a)	$	40,407	$	61,319	$	109,595	$	84,542	$	28,498	$	27,293	$	5,254
Fixed charges:
Interest expense		25,461		22,174		17,953		15,817		16,196		7,997		8,241
Financing costs amortization		1,536		1,646		1,857		1,616		3,063		649		2,366
Interest portion of rental expense (b)		1,458		2,159		2,388		2,407		2,827		1,483		1,384
Total fixed charges		28,455		25,979		22,198		19,840		22,086		10,129		11,991
Earnings (loss) before income taxes and fixed charges	$	68,862	$	87,298	$	131,793	$	104,382	$	50,584	$	37,422	$	17,245
Ratio of earnings to fixed charges (c)		2.4		3.4		5.9		5.3		2.3		3.7		1.4
Earnings Deficiency (d)	$	—	$	—	$	—	$	—	$	—	$	—	$	—

(a) For this purpose, earnings include pre-tax income from continuing operations before adjustments for minority interests in consolidated subsidiaries and income or loss from equity investees.

(b) The Company uses one-third of rental expense as an estimation of interest within rental expense.

(c) The ratio of earnings to fixed charges is computed by dividing earnings by fixed charges.

(d) The deficiencies for the periods where earnings were inadequate to cover fixed charges are noted in the schedule above.