Exhibit 12.1

STATEMENT RE COMPUTATION OF EARNINGS TO FIXED CHARGES

	Year Ended December 31,
(in thousands)	2010			2009			2008			2007			2006
Ratio of Earnings to Fixed Charges
Earnings:
Income before income taxes	$	79,252		$	7,769		$	56,564		$	47,610		$	28,119
Add:
Amortization of capitalized interest		36			35			32			19			13
Fixed charges, net of capitalized interest		1,749			1,966			2,151			2,060			1,857
Income before income taxes and fixed charges, net	$	81,037		$	9,770		$	58,747		$	49,689		$	29,989
Fixed Charges:
Total interest expense	$	1,508		$	1,695		$	1,669		$	1,630		$	1,629
Capitalized interest		18			75			390			186			149
Interest factor in rents		241			271			482			430			228
Total fixed charges	$	1,767		$	2,041		$	2,541		$	2,246		$	2,006
Ratio of earnings to fixed charges		45.9	x		4.8	x		23.1	x		22.1	x		15.0	x