Significant Customers (Details) (USD $)	3 Months Ended			12 Months Ended	3 Months Ended			12 Months Ended	3 Months Ended			12 Months Ended	3 Months Ended					12 Months Ended
	Jun. 30, 2013 Electric Vehicles International [Member]	Jun. 30, 2012 Electric Vehicles International [Member]	Jun. 30, 2013 Electric Vehicles International [Member] Accounts Receivable [Member]	Mar. 31, 2013 Electric Vehicles International [Member] Accounts Receivable [Member]	Jun. 30, 2013 Proterra [Member]	Jun. 30, 2012 Proterra [Member]	Jun. 30, 2013 Proterra [Member] Accounts Receivable [Member]	Mar. 31, 2013 Proterra [Member] Accounts Receivable [Member]	Jun. 30, 2013 Regional Transportation District [Member]	Jun. 30, 2012 Regional Transportation District [Member]	Jun. 30, 2013 Regional Transportation District [Member] Accounts Receivable [Member]	Mar. 31, 2013 Regional Transportation District [Member] Accounts Receivable [Member]	Jun. 30, 2013 Audi [Member]	Jun. 30, 2012 Audi [Member]	Jun. 30, 2013 United States Government and Government Prime Contractors [Member]	Jun. 30, 2012 United States Government and Government Prime Contractors [Member]	Jun. 30, 2013 United States Government and Government Prime Contractors [Member] Accounts Receivable [Member]	Mar. 31, 2013 United States Government and Government Prime Contractors [Member] Accounts Receivable [Member]
Concentration Risk [Line Items]
Revenue from major customer, amount	$ 413,560	$ 138,880			$ 229,041	$ 146,460			$ 199,800	$ 0			$ 0	$ 728,000	$ 256,251	$ 293,635
Revenue from major customer, percentage	21.00%	6.00%			12.00%	6.00%			10.00%	0.00%			0.00%	30.00%	13.00%	12.00%
Concentration risk, percentage			2.00%	3.00%			7.00%	4.00%			2.00%	0.00%					77.00%	77.00%