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Schedule of Amounts Due from Affiliate (Detail) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items] |  |
Beginning balance | $ 125,972 |
Ending balance | 128,204 |
Sonatide Marine, Ltd. |  |
Schedule of Equity Method Investments [Line Items] |  |
Beginning balance | 89,246 |
Revenue earned by the company through Sonatide | 11,812 |
Less amounts received from Sonatide | (2,691) |
Less amounts used to offset Due to Sonatide obligations | (4,864) | [1]
Other | 1,455 |
Ending balance | $ 94,958 |
[1] | We reduced the respective due from affiliates and due to affiliates balances each period through netting transactions based on agreement with the joint venture.

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