Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Stock-based compensation expense before income tax expense for the three and nine-month periods ended September 30, 2012 and 2011, consisted of the following (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Cost of goods sold	$	49	$	69	$	190	$	158
Research and development	26		24		93		53
Selling, general, and administrative	354		343		1,171		871
Stock-based compensation expense before taxes	$	429	$	436	$	1,454	$	1,082

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

During the three and nine-month periods ended September 30, 2012, we granted 7,500 and 127,500 stock awards, respectively. During the three and nine-month periods ended September 30, 2011, there were 844,000 awards granted. We use the Black-Scholes methodology to value the stock-based compensation expense for options. In applying the Black-Scholes methodology to our outstanding option grants, we used the following assumptions:

	Nine Months Ended
	September 30,
	2012			2011
Risk-free interest rate	0.54%	-	0.95%	0.68%	-	1.34%
Expected option life	4.2 years	-	6.0 years	4.2 years	-	6.0 years
Expected dividend yield	—			—
Expected price volatility	42.01%	-	44.56%	42.11%	-	45.29%