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Revenue (Tables)

6 Months Ended

Jun. 30, 2022

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								Six Months Ended
		June 30,								June 30,
Revenues		2022				2021				2022				2021
Dredging:
Capital—U.S.		$	89,693			$	79,399			$	190,704			$	157,005
Capital—foreign			—				1,613				—				6,322
Coastal protection			45,119				46,631				117,036				93,262
Maintenance			12,648				37,278				32,460				82,579
Rivers & lakes			1,968				4,993				3,577				8,379
Total revenues		$	149,428			$	169,914			$	343,777			$	347,547

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

		Three Months Ended								Six Months Ended
		June 30,								June 30,
Revenues		2022				2021				2022				2021
Dredging:
Federal government		$	95,360			$	127,331			$	262,934			$	258,063
State and local government			50,922				37,069				75,523				71,844
Private			3,146				3,901				5,320				11,318
Foreign			—				1,613				—				6,322
Total revenues		$	149,428			$	169,914			$	343,777			$	347,547

Schedule of Accounts Receivable

Accounts receivable at June 30, 2022 and December 31, 2021 are as follows:

		June 30,				December 31,
		2022				2021
Completed contracts		$	34,030			$	10,612
Contracts in progress			31,211				65,415
Retainage			4,648				7,490
			69,889				83,517
Allowance for doubtful accounts			(564	)			(564	)
Total accounts receivable—net		$	69,325			$	82,953

Components of Contracts in Progress

The components of contracts in progress at June 30, 2022 and December 31, 2021 are as follows:

		June 30,				December 31,
		2022				2021
Costs and earnings in excess of billings:
Costs and earnings for contracts in progress		$	277,373			$	270,998
Amounts billed			(239,568	)			(240,941	)
Costs and earnings in excess of billings for contracts in progress			37,805				30,057
Costs and earnings in excess of billings for completed contracts			25,917				10,894
Total contract revenues in excess of billings		$	63,722			$	40,951
Current portion of contract revenues in excess of billings		$	62,615			$	39,844
Long-term contract revenues in excess of billings			1,107				1,107
Total contract revenues in excess of billings		$	63,722			$	40,951
Billings in excess of costs and earnings:
Amounts billed		$	(155,455	)		$	(224,381	)
Costs and earnings for contracts in progress			152,841				209,567
Total billings in excess of contract revenues		$	(2,614	)		$	(14,814	)

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
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