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
Sep. 19, 2018
USD ($)
Jun. 30, 2021
USD ($)
kW
Sep. 30, 2013
Mar. 31, 2021
USD ($)
Sep. 18, 2018
USD ($)
Jul. 25, 2018
USD ($)
Other Assets            
Prepaid royalty   $ 2,702   $ 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