Quarterly report pursuant to Section 13 or 15(d)

Other Assets - General Information (Details)

v3.21.2
Other Assets - General Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 19, 2018
USD ($)
Sep. 30, 2013
Sep. 30, 2021
USD ($)
kW
Mar. 31, 2021
USD ($)
Sep. 18, 2018
USD ($)
Jul. 25, 2018
USD ($)
Other Assets            
Prepaid royalty     $ 2,676 $ 2,737    
Carrier            
Other Assets            
Reduction in fixed rate royalty (as a percent)   50.00%        
Accrued royalties     $ 0     $ 3,000
Payment of royalty settlement $ 3,000          
Prepaid royalty         $ 3,000  
Amortization period of prepaid royalty     15 years      
Carrier | C200            
Other Assets            
Capacity of microturbine (in kW) | kW     200