Quarterly report pursuant to Section 13 or 15(d)

Other Current Liabilities (Details)

v3.6.0.2
Other Current Liabilities (Details) - Carrier
$ in Millions
3 Months Ended 9 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
kW
Dec. 31, 2015
USD ($)
Mar. 31, 2016
USD ($)
Other Current Liabilities          
Capacity of microturbine (in kW) | kW     200    
Royalties earned $ 0.2 $ 0.3 $ 0.6 $ 0.9  
Unpaid earned royalties $ 0.2   $ 0.2   $ 0.2