Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Solar Turbines (Details)

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Intangible Assets - Solar Turbines (Details) - Solar - USD ($)
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Intangible Assets      
Years subject to payment of per-unit royalty fees 17 years    
Royalties earned $ 35,000 $ 71,100 $ 83,000
Unpaid earned royalties $ 35,000 $ 19,300