Quarterly report pursuant to Section 13 or 15(d)

Other Current Liabilities (Details)

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Other Current Liabilities (Details) (USD $)
0 Months Ended 3 Months Ended 12 Months Ended
Jan. 14, 2011
Jun. 30, 2013
Jun. 30, 2012
Mar. 31, 2013
UTCP
       
Other Current Liabilities        
Capacity of microturbine (in kW)   200    
Cash contribution   $ 12,000,000    
In-kind services contribution   800,000    
Royalty payable (as a percent)   10.00%    
Royalty payable after recovery of cash and in-kind services (as a percent)   5.00%    
Carrier
       
Other Current Liabilities        
Reduction in predetermined fixed rate after recovery of cash and in-kind services (as a percent) 50.00%      
Royalties earned   800,000 900,000  
Unpaid earned royalties   $ 800,000   $ 1,400,000