Note 7. Stock-Based Awards (Tables)

3 Months Ended

Jun. 30, 2012

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

	Number of Shares			Exercise Price Range			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life
Outstanding at March 31, 2012		6,007,661		$0.79	–	$4.88	$	2.23		6.9
Granted		67,750		$1.30	–	$1.69		1.55
Exercised		(4,885	)	$0.97	–	$1.28		1.17
Canceled		(152,446	)	$1.28	–	$3.73		1.51
Outstanding at June 30, 2012		5,918,080		$0.79	–	$4.88	$	2.25		6.8
Vested and expected to vest at June 30, 2012		5,533,867		$0.79	–	$4.88	$	2.22		6.8
Exercisable at June 30, 2012		3,650,763		$0.79	–	$4.88	$	2.24		5.7

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Number of Shares			Weighted Average Grant Price
Nonvested at March 31, 2012		306,606		$	2.50
Granted		-			-
Vested		(73,436	)		2.46
Forfeited		(32,839	)		2.61
Nonvested at June 30, 2012		200,331		$	2.50

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

	Three Months Ended June 30,
	2012			2011
Risk-free interest rate		1.13	%		2.02	%
Expected life (in years)		6.7			7.1
Expected volatility		83	%		85	%
Expected dividend yield		--			--

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

	Three Months Ended June 30,
	2012		2011
Cost of sales	$	47	$	40
Selling, general, and administrative expenses		369		420
Research and development expenses		27		16
Total stock-based compensation expense	$	443	$	476