Consolidated Condensed Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Revenue:
Product sales	$ 594,808	$ 1,825,351	$ 2,264,123	$ 5,351,287
Contract services	240,827	214,898	707,839	679,431
Total Revenues	835,635	2,040,249	2,971,962	6,030,718
Operating costs and expenses:
Costs of product sales	369,769	1,053,716	1,323,078	3,134,230
Costs of contract services	291,701	153,647	667,802	552,797
Research and development	40,183	44,307	217,388	158,852
Production engineering	934,239	818,460	3,227,240	2,851,416
Reimbursement of costs under DOE grant	(557,327)	(451,026)	(1,812,670)	(2,576,685)
Selling, general and administrative	1,133,787	1,220,184	4,034,031	4,079,660
Impairment of assets under supply agreement		(726,640)		(726,640)
Gain on sale of facility held for sale				(40,032)
Total Costs and Expenses	2,212,352	2,112,648	7,656,869	7,433,598
Loss before other income	(1,376,717)	(72,399)	(4,684,907)	(1,402,880)
Other income:
Interest income	4,935	339	12,124	1,409
Other	317	6,147	567	6,935
Total nonoperating income	5,252	6,486	12,691	8,344
Net loss	$ (1,371,465)	$ (65,913)	$ (4,672,216)	$ (1,394,536)
Net loss per common share - basic and diluted	$ (0.03)		$ (0.12)	$ (0.04)
Weighted average number of shares of common stock outstanding - basic and diluted	39,999,984	36,878,092	39,921,424	36,794,834