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v3.20.2

Summary of Debt Outstanding (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2019 | Jun. 30, 2020
Debt Instrument [Line Items] |  |
Restricted cash | $ 5,755 | $ 19,880
Percentage of net proceeds from asset dispositions |  | 65.00%
Troms Offshore Supply AS |  |
Debt Instrument [Line Items] |  |
Description of frequency of periodic payments on notes |  | semi-annually
Weighted average interest rate of debt borrowings |  | 5.00%
Troms Offshore Supply AS | Level 2 |  |
Debt Instrument [Line Items] |  |
Fair value of debt outstanding | $ 72,900 | $ 65,200
8.00% Senior Secured Notes Due August 2022 |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 8.00% | 8.00%
Debt Instrument Maturity Period | August 2022 | August 2022
8.00% Senior Secured Notes Due August 2022 | Level 2 |  |
Debt Instrument [Line Items] |  |
Fair value of debt outstanding | $ 237,600 | $ 202,300
Norwegian Kroner Denominated Notes Due May 2024 | Troms Offshore Supply AS |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity Period | May 2024 | May 2024
Norwegian Kroner Denominated Notes Due January 2026 | Troms Offshore Supply AS |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity Period | January 2026 | January 2026
United States Dollar Denominated Notes Due January 2027 | Troms Offshore Supply AS |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity Period | January 2027 | January 2027
United States Dollar Denominated Notes Due April 2027 | Troms Offshore Supply AS |  |
Debt Instrument [Line Items] |  |
Debt Instrument Maturity Period | April 2027 | April 2027

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