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Revenue (Tables)

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Summary of Contract Revenues by Type of Work and Customer

The Company’s contract revenues by type of work, for the periods indicated, are as follows:

		Three Months Ended
		March 31,
Revenues		2024				2023
Dredging:
Capital—U.S.		$	69,900			$	32,475
Coastal protection			63,926				51,305
Maintenance			64,411				71,928
Rivers & lakes			423				2,336
Total revenues		$	198,660			$	158,044

The Company’s contract revenues by type of customer, for the periods indicated, are as follows:

		Three Months Ended
		March 31,
Revenues		2024				2023
Dredging:
Federal government		$	134,789			$	142,162
State and local government			47,700				15,882
Private			16,171				—
Total revenues		$	198,660			$	158,044

Schedule of Accounts Receivable

Accounts receivable at March 31, 2024 and December 31, 2023 are as follows:

		March 31,				December 31,
		2024				2023
Completed contracts		$	6,157			$	2,920
Contracts in progress			22,566				40,743
Retainage			12,123				11,511
			40,846				55,174
Allowance for credit losses			(364	)			(364	)
Total accounts receivable—net		$	40,482			$	54,810

Components of Contracts in Progress

The components of contracts in progress at March 31, 2024 and December 31, 2023 are as follows:

		March 31,				December 31,
		2024				2023
Costs and earnings in excess of billings:
Costs and earnings for contracts in progress		$	477,609			$	206,330
Amounts billed			(476,587	)			(196,520	)
Costs and earnings in excess of billings for contracts in progress			1,022				9,810
Costs and earnings in excess of billings for completed contracts			67,739				58,925
Total contract revenues in excess of billings		$	68,761			$	68,735
Current portion of contract revenues in excess of billings		$	68,761			$	68,735
Long-term contract revenues in excess of billings			—				—
Total contract revenues in excess of billings		$	68,761			$	68,735
Billings in excess of costs and earnings:
Amounts billed		$	(54,924	)		$	(258,948	)
Costs and earnings for contracts in progress			36,858				229,388
Total billings in excess of contract revenues		$	(18,066	)		$	(29,560	)

X

- Definition

Tabular disclosure of long-term contract or program.

+ References

No definition available.

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-5

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- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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