Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue:
Contract services	$ 135,547	$ 43,262	$ 211,849	$ 345,490
Product sales	2,198,676	1,984,296	3,437,434	4,237,392
Total Revenues	2,334,223	2,027,558	3,649,283	4,582,882
Operating costs and expenses:
Costs of contract services	86,123	161,434	131,693	350,750
Costs of product sales	1,227,559	1,639,515	1,909,154	3,041,451
Research and development	647	152,628	4,810	271,947
Production engineering	1,622,163	856,682	3,196,986	1,660,316
Reimbursement of costs under DOE grant	(1,111,034)	(2,551,944)	(2,232,670)	(2,551,944)
Selling, general and administrative	2,099,025	2,177,981	3,288,628	3,000,822
Gain on sale of long-lived asset	(3,138)	0	(3,138)	(1,004)
Total Costs and Expenses	3,921,345	2,436,296	6,295,463	5,772,338
Loss before other income (expense)	(1,587,122)	(408,738)	(2,646,180)	(1,189,456)
Other income (expense):
Interest income	641	30,945	15,895	59,653
Other	296	0	557	265,140
Total nonoperating income (expense)	937	30,945	16,452	324,793
Net loss	$ (1,586,185)	$ (377,793)	$ (2,629,728)	$ (864,663)
Net loss per common share - basic and diluted	$ (0.04)	$ (0.01)	$ (0.07)	$ (0.02)
Weighted average number of shares of common stock outstanding - basic and diluted	36,304,613	36,005,413	36,263,640	35,976,580