Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

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 tax expense for the three-month periods ended March 31, 2012 and 2011, consisted of the following (in thousands):

	Three Months Ended
	March 31,
	2012		2011
Cost of goods sold	$	82	$	51
Research and development	32		13
Selling, general, and administrative	441		271
Stock-based compensation expense before taxes	$	555	$	335