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Significant Accounting Policies - Trade Accounts Receivable and Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Trade Receivables    
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Allowance for Credit Losses - Trade, Beginning of Year $ 84 $ 84
Provision for Expected Credit Losses 0 0
Allowance for Credit Losses - Other Receivables, End of Period 84 84
Other Receivables    
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Allowance for Credit Losses - Trade, Beginning of Year 2,937 3,322
Provision for Expected Credit Losses 32 (198)
Write-off of Uncollectible Accounts (122) (187)
Allowance for Credit Losses - Other Receivables, End of Period $ 2,847 $ 2,937