Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
Dec. 31, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Short-term investment maturity period	3 months
Exploration license impairments	$ 0	$ 0
Initial lease term	12 months
Net income loss attributable to parent diluted	$ 4,811
Number of operating segments \| Segment	1
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

Exploration license impairments.

No definition available.

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- Definition

Short-term investments maturity period.

+ References

No definition available.

+ Details

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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

+ References

No definition available.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-18

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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.

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