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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Property, Plant and Equipment [Line Items] |  |
Short-term investment maturity period | 3 months |
Exploration license impairments | $ 0 | $ 0
Asset impairment charges | $ 0 | $ 0
Computer Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and Equipment, estimated useful life | 3 years |
Furniture And Office Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and Equipment, estimated useful life | 5 years |
Minimum [Member] | Marine Services Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and Equipment, estimated useful life | 5 years |
Maximum [Member] | Marine Services Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property and Equipment, estimated useful life | 10 years |

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- Definition Short-term investments maturity period. + References No definition available. + Details
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482130/360-10-45-4 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Details
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- Details
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- Details
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