EX-12.1 5 w82658exv12w1.htm EX-12.1

exv12w1

Exhibit 12.1

Calculation of Ratio of Earnings to Fixed Charges

		Three
		Months
		Ended
		March				Years Ended December 31,
		31, 2011				2010				2009				2008				2007				2006
Earnings available for fixed charges:
Net income		$	4,532			$	13,289			$	18,693			$	24,623			$	15,951			$	12,410
Income tax expense			2,766				10,221				14,395				20,079				9,946				8,516
Fixed charges excluding capitalized interest			891				1,277				1,134				1,452				1,353				1,337
Total earnings available for fixed charges			8,189				24,787				34,222				46,154				27,250				22,263
Fixed charges:
Rent deemed interest			891				1,277				1,134				1,452				1,353				1,337
Total fixed charges			891				1,277				1,134				1,452				1,353				1,337
Ratio of earnings to fixed charges			9.2x				19.4x				30.2x				31.8x				20.1x				16.6x