Note 2. Long-Term Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2012

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Expected volatility		68.49	%		71.48	%		69.44	%		71.51	%
Risk-free interest rate		0.94	%		2.17	%		1.32	%		2.18	%
Expected dividend yield		0.00	%		0.00	%		0.00	%		0.00	%
Expected life (in years)		6.0			6.0			6.0			6.0
Estimated fair value per option granted	$	0.85		$	1.37		$	0.97		$	1.37

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

	Number of Options
Outstanding at January 1, 2012		3,224,879
Granted		1,419,500
Forfeited and cancelled		(160,031	)
Outstanding at June 30, 2012		4,484,348

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

	Shares
Nonvested at January 1, 2012		528,443
Granted		152,328
Vested		(278,143	)
Forfeited and cancelled		(394	)
Nonvested at June 30, 2012		402,234

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Cost of sales	$	19	$	28	$	38	$	52
Research and development		69		99		165		186
Selling, general and administrative		87		150		276		280
	$	175	$	277	$	479	$	518