Quarterly report pursuant to Section 13 or 15(d)

Other Current Liabilities (Details)

v3.5.0.2
Other Current Liabilities (Details)
$ in Millions
1 Months Ended 3 Months Ended
Sep. 30, 2007
kW
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2016
USD ($)
UTCP        
Other Current Liabilities        
Capacity of microturbine (in kW) | kW 200      
Carrier        
Other Current Liabilities        
Royalties earned   $ 0.2 $ 0.4  
Unpaid earned royalties   $ 0.2   $ 0.2