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Basis of Presentation - Schedule of Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Trade Receivables    
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Allowance for Credit Losses, Beginning of Year $ 84 $ 0
Provision for Expected Credit Losses 0 78
Allowance for Credit Losses, End of Period 84 78
Other Receivables    
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Allowance for Credit Losses, Beginning of Year 3,248 2,463
Provision for Expected Credit Losses (55) 2,736
Write-off of Uncollectible Accounts (15) (69)
Allowance for Credit Losses, End of Period $ 3,178 $ 5,130