Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

	Fiscal Year Ended December 31,
	2008			2009			2010		2011		2012
	(dollars in thousands)
Ratio of earnings to fixed charges
Earnings:
Earnings available for fixed charges	$	(38	)	$	(1,596	)	$	20,184	$	27,473	$	5,965
Add:
Fixed charges		231			64			74		-		1
Total income/(loss) for computation of ratio	$	193		$	(1,532	)	$	20,258	$	27,473	$	5,966
Fixed charges:
Total interest expense	$	193		$	47		$	57	$	0	$	1
Interest factor in rents a		38			17			17		-		-
Total fixed charges	$	231		$	64		$	74	$	0	$	1
Ratio of earnings to fixed charges b		0.84			(23.94	)		273.76	NM			5,966.00

(a) Interest component of rental expense is estimated based on interest on tenant improvement loan at 4%, which is considered a reasonable approximation of the interest factor.

(b) In 2009, earnings were weak from the global financial crisis. In 2011, there was no fixed charge.

NM = ratio not meaningful