Commitments and Contingencies - Additional Information (Details) $ in Millions |
Dec. 31, 2019
USD ($)
vessel
|
Dec. 31, 2018
USD ($)
|
Mar. 31, 2018
vessel
|
|---|---|---|---|
| Commitments And Contingencies Disclosure [Abstract] | |||
| Number of multi-purpose service vessels | vessel | 2 | 2 | |
| Net contract asset | $ | $ 12.5 | $ 12.5 |
| X | ||||||||||
- Definition Construction in progress, number of multi-purpose service vessels. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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