Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Accounting Policies [Abstract]
Deferred contract costs	$ 935,000	$ 37,000
Power purchase agreement product revenue is recognized term	10 years
Solar power systems completion period minimum	3 months
Solar power systems completion period maximum	15 months
Advertising costs	$ 94,000	4,000	$ 149,000
Deferred tax assets valuation allowance	4,630,000
Tax benefit (expense)	$ 0	$ 0	$ 0