Options pending award offshore wind contracts.

No definition available.

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- Definition

Percentage of performance obligation to be recognized as revenue.

+ References

No definition available.

+ Details

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- Definition

Performance obligation expected to be recognized as revenue, year.

+ References

No definition available.

+ Details

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- Definition

Performance obligations domestic low bids pending formal award and additional phases.

+ References

No definition available.

+ Details

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- Definition

Performance obligations exclude from dredging backlog.

+ References

No definition available.

+ Details

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- Definition

Revenue from contract with customer line items.

+ References

No definition available.

+ Details

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-3

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-3

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-SubTopic 10
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

+ Details

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- Definition

Year in which remaining performance obligation is expected to be recognized, in YYYY format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-SubTopic 10
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

+ Details

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Revenue (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Revenue (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Revenue From Contract With Customer [Line Items]
Revenue, remaining performance obligation	$ 1,210		$ 1,210
Performance obligations exclude from dredging backlog	44,900		44,900
Performance obligations domestic low bids pending formal award and additional phases	$ 465,000		$ 465,000
Percentage of performance obligation to be recognized as revenue			18.00%
Performance obligation, expected to be recognized as revenue year			2024
Remaining performance obligation, expected timing of satisfaction, year	2025 2026		2025 2026
Amortization on pre-construction costs	$ 4,400	$ 1,600	$ 12,800	$ 6,600
Options pending award related to offshore wind contracts	12,700		12,700
Other Current and Noncurrent Assets [Member]
Revenue From Contract With Customer [Line Items]
Costs to fulfill a contract with customer recognized as an asset	$ 22,100		$ 22,100		$ 22,200