Quarterly report pursuant to Section 13 or 15(d)

Additional Cash Flow Information - Supplemental Disclosure of Cash Flow Information (Details)

v3.20.2
Additional Cash Flow Information - Supplemental Disclosure of Cash Flow Information (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Supplemental Cash Flow Information [Abstract]        
Non-cash accruals of property, plant and equipment and other non-current assets $ 7,955 $ 7,875    
Non-cash settlement of Final Payment Fee (Note 9) 8,539 0    
Future proceeds from sale of Magellan Petroleum UK 0 4,940    
Tradable equity securities 0 3,705    
Non-cash settlement of withholding taxes associated with the 2019 and 2018 bonus and vesting of certain awards, respectively 878 6,686    
Non-cash settlement of the 2019 and 2018 bonus, respectively 4,344 18,396    
Noncash activities related to debt amendment 78,500      
Noncash activities related to replacement warrant 2,100      
Cash and cash equivalents 77,947 91,057 $ 64,615  
Non-current restricted cash 3,441 4,300 3,867  
Total cash, cash equivalents and restricted cash shown in the statements of cash flows $ 81,388 $ 95,357 $ 68,482 $ 183,589