Commitments and Contingencies (Details) $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($)
Commitments and Contingencies [Abstract]
Protection and indemnity insurance coverage for pollution per vessel per incident	$ 1,000,000
Commitments under Long-Term Lease Contracts [Abstract]
2026	4,620
Total	$ 4,620
Period to average index for index-linked contracts	15 days

Period of time preceding the calculation date used to average the relevant index for index-linked contracts, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

+ Details

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Namespace Prefix:	icon_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum protection and indemnity insurance coverage for pollution per vessel per incident.

+ References

No definition available.

+ Details

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Namespace Prefix:	icon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-12

+ Details

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Period Type:	instant

- Definition

Amount of lease payment to be received by lessor for operating lease in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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