Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details 2)

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Intangible Assets (Details 2) (USD $)
3 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Mar. 31, 2012
Minimum
     
Intangible Assets      
Estimated useful lives of acquired intangible assets (in years) 1 year    
Maximum
     
Intangible Assets      
Estimated useful lives of acquired intangible assets (in years) 10 years    
Solar
     
Intangible Assets      
Royalties earned $ 16,000 $ 18,600  
Unpaid earned royalties $ 16,000   $ 17,500
Years subject to payment of per-unit royalty fees 17 years    
CPS
     
Intangible Assets      
Capacity of microturbine product line (in kW) 100