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Financial Instruments - Schedule of Maintenance Fee Payment to Our Equity Affiliate (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Related Party Transactions [Abstract]        
Maintenance Fee Payments $ 414 $ 394 $ 845 $ 827