Stock-Based Compensation (Tables)

3 Months Ended

Mar. 30, 2013

Stock-Based Compensation

Summary of option activity

	Shares UnderOption		Weighted Average Exercise Price
Options outstanding at December 31, 2012	1,174,250		$	3.64
Granted	340,000		0.67
Exercised	—		—
Cancelled	(22,813	)	4.07
Options outstanding at March 30, 2013	1,491,437		$	2.95

Schedule of assumptions used in the Black-Scholes option-pricing model

	March 30, 2013
Risk free interest rate	0.88%-1.16%
Dividend yield	0%
Expected volatility	56%
Expected term	5.50-6.25 years
Weighted average grant date fair value	$0.35

Summary of restricted stock award activity

	Number of Shares		Weighted Average Fair Value
Awards outstanding at December 31, 2012	67,500		$	8.00
Granted	60,000		$	0.79
Vested	(22,500	)	—
Cancelled	—		—
Awards outstanding at March 30, 2013	105,000		3.88

Schedule of stock-based compensation expense

Stock-based compensation expense for each of the periods presented is as follows (in thousands):

	Three Months Ended
	March 30, 2013		March 31, 2012
Manufacturing	$	—	$	15
Research and development	49		55
Selling, general and administrative	93		110
Total stock-based compensation	$	142	$	180