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Financial Instruments - Schedule of Maintenance Fee Payment to Our Equity Affiliate (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Related Party Transactions [Abstract]        
Maintenance Fee Payments $ 411 $ 374 $ 1,256 $ 1,201