Equity contributions to joint venture.

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- Definition

Income (Loss) From Equity Method Investments, Excluding Amortized Costs

+ References

No definition available.

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- Definition

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of other-than-temporary decline in value that has been recognized against investment accounted for under equity method of accounting.

+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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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.

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Equity Method Investments - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 GBP (£)	Jun. 03, 2026	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Oct. 25, 2023
Schedule of Equity Method Investments [Line Items]
Share of results from equity method investment excluding amortized costs	$ 9,700	$ 3,900
Equity method investments	247,737				$ 247,935	$ 253,729
Enterprise Navigator Ethylene Terminal L.L.C. ("Export Terminal Joint Venture")
Schedule of Equity Method Investments [Line Items]
Equity contributions to joint venture	274,500
Difference in the carrying amount and the underlying equity	4,900				$ 4,900
Costs amortized	$ 100	$ 100
Ownership percentage	50.00%		50.00%		50.00%
Azane Fuel Solutions AS ("Azane")
Schedule of Equity Method Investments [Line Items]
Ownership percentage	16.10%		16.10%	16.10%	9.50%		9.50%
Unigas International B.V. ("Unigas")
Schedule of Equity Method Investments [Line Items]
Ownership percentage	33.30%		33.30%		33.30%
Luna Pool Agency Limited
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%		50.00%		50.00%
Equity method investments \| £			£ 1
Bluestreak CO2 Limited ("Bluestreak")
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%		50.00%		50.00%