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Leases - Other Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating cash flows from operating leases $ 140 $ 182
Investing cash flow from operating leases 10,272 24,263
Investing cash flow from operating leases - related party $ 6,800 $ 84,750