Exhibit 12.1

STATEMENT RE COMPUTATION OF EARNINGS TO FIXED CHARGES

	Year Ended December 31,
	2011			2010			2009			2008			2007
	(In thousands, except ratios)
Ratio of Earnings to Fixed Charges
Earnings:
Income before income taxes	$	174,584		$	79,252		$	7,769		$	56,564		$	47,610
Add:
Amortization of capitalized interest		38			36			35			32			19
Fixed charges, net of capitalized interest		1,403			1,749			1,966			2,151			2,060
Income before income taxes and fixed charges, net	$	176,025		$	81,037		$	9,770		$	58,747		$	49,689
Fixed Charges:
Total interest expense	$	1,141		$	1,508		$	1,695		$	1,669		$	1,630
Capitalized interest		46			18			75			390			186
Interest factor in rents		262			241			271			482			430
Total fixed charges	$	1,449		$	1,767		$	2,041		$	2,541		$	2,246
Ratio of earnings to fixed charges		121.5	x		45.9	x		4.8	x		23.1	x		22.1	x