Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

Stock-based compensation expense before income taxes for the three-month periods ended March 31, 2013 and 2012, consisted of the following (in thousands):

	Three Months Ended
	March 31,
	2013		2012
Cost of goods sold	$	54	$	82
Research and development	25		32
Selling, general, and administrative	380		441
Stock-based compensation expense before income taxes	$	459	$	555

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

During the three-months ended March 31, 2013, we granted awards representing 50,000 shares of our common stock. 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:

	Three Months Ended
	March 31,
	2013
Risk-free interest rate	0.65%
Expected option life	4.2 years
Expected dividend yield	—
Expected price volatility	40.2%