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Revenue Recognition - Additional Information (Detail)
$ in Thousands
Mar. 31, 2020
USD ($)
Unsatisfied Performance Obligations  
Disaggregation Of Revenue [Line Items]  
Deferred mobilization revenue included within other current liabilities $ 617
Vessel Mobilization  
Disaggregation Of Revenue [Line Items]  
Deferred costs included within other current assets and other assets 6,100
Vessel Mobilization | Unsatisfied Performance Obligations  
Disaggregation Of Revenue [Line Items]  
Deferred mobilization revenue included within other current liabilities 600
Vessel Mobilization | Other Assets  
Disaggregation Of Revenue [Line Items]  
Deferred costs included within other current assets and other assets $ 700