Note 2. Long-Term Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2013

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

	Three Months
	Ended March 31,
	2013			2012
Expected volatility		76.23	%		69.82	%
Risk-free interest rate		1.06	%		1.48	%
Expected dividend yield		0.00	%		0.00	%
Expected life (in years)		6.0			6.0
Estimated fair value per option granted	$	0.87		$	1.01

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Number of Options
Outstanding at January 1, 2013		4,294,273
Granted		60,000
Exercised		(50,000	)
Forfeited and cancelled		(98,411	)
Outstanding at March 31, 2013		4,205,862

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

	Shares
Nonvested at January 1, 2013		343,161
Granted		329,164
Vested and settled in shares		(168,995	)
Nonvested at March 31, 2013		503,330

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three Months
	Ended March 31,
	2013		2012
Cost of sales	$	17	$	19
Research and development		87		96
Selling, general and administrative		236		189
	$	340	$	304