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Revenue (Tables)

9 Months Ended

Sep. 30, 2023

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								Nine Months Ended
		September 30,								September 30,
Revenues		2023				2022				2023				2022
Dredging:
Capital—U.S.		$	54,602			$	90,574			$	125,234			$	281,278
Coastal protection			23,567				36,934				131,362				153,970
Maintenance			33,816				26,202				141,553				58,662
Rivers & lakes			5,200				4,636				9,747				8,213
Total revenues		$	117,185			$	158,346			$	407,896			$	502,123

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

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
Revenues		2023				2022				2023				2022
Dredging:
Federal government		$	78,681			$	62,228			$	328,211			$	325,162
State and local government			33,316				91,544				74,497				167,067
Private			5,188				4,574				5,188				9,894
Total revenues		$	117,185			$	158,346			$	407,896			$	502,123

Schedule of Accounts Receivable

Accounts receivable at September 30, 2023 and December 31, 2022 are as follows:

		September 30,				December 31,
		2023				2022
Completed contracts		$	1,530			$	4,682
Contracts in progress			18,172				32,546
Retainage			11,204				8,226
			30,906				45,454
Allowance for credit losses			(564	)			(564	)
Total accounts receivable—net		$	30,342			$	44,890

Components of Contracts in Progress

The components of contracts in progress at September 30, 2023 and December 31, 2022 are as follows:

		September 30,				December 31,
		2023				2022
Costs and earnings in excess of billings:
Costs and earnings for contracts in progress		$	296,736			$	262,125
Amounts billed			(263,110	)			(210,068	)
Costs and earnings in excess of billings for contracts in progress			33,626				52,057
Costs and earnings in excess of billings for completed contracts			15,664				14,972
Total contract revenues in excess of billings		$	49,290			$	67,029
Current portion of contract revenues in excess of billings		$	49,290			$	65,922
Long-term contract revenues in excess of billings			-				1,107
Total contract revenues in excess of billings		$	49,290			$	67,029
Billings in excess of costs and earnings:
Amounts billed		$	(257,790	)		$	(95,013	)
Costs and earnings for contracts in progress			228,398				85,099
Total billings in excess of contract revenues		$	(29,392	)		$	(9,914	)

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Tabular disclosure of long-term contract or program.

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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
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