XML 46 R31.htm IDEA: XBRL DOCUMENT v3.25.0.1

Leases (Tables)

12 Months Ended

Dec. 31, 2024

Leases [Abstract]

Schedule of Lease Costs

The Company’s lease costs are recorded in costs of contract revenues and general and administrative expenses. For the years ended December 31, 2024, 2023 and 2022, respectively, lease costs are as follows:

Lease terms and commitments

	2024				2023				2022
Operating lease costs	$	34,663			$	29,945			$	24,224
Finance lease costs
Amortization of finance lease assets		1,792				95				—
Interest expense on lease liabilities		380				24				—
Short-term lease costs		61,139				68,119				94,842
Total lease cost	$	97,974			$	98,183			$	119,066

Schedule of Maturity Analysis of Operating Lease Liabilities

As recorded on the balance sheet, the Company’s maturity analysis of its operating lease liabilities as of December 31, 2024 is as follows:

	Operating				Finance
2025	$	50,484			$	2,089
2026		19,718				2,014
2027		13,986				572
2028		9,663				165
2029		7,676				—
Thereafter		4,732				—
Minimum lease payments		106,259				4,840
Imputed interest		(8,559	)			(546	)
Present value of minimum lease liabilities	$	97,700			$	4,294

Schedule of Additional Information Related to Leases

Additional information related to the Company’s leases as of December 31, 2024, 2023 and 2022 respectively, is as follows:

	2024				2023				2022
Operating
Weighted average remaining lease term (years)		3.2				4.5				4.2
Weighted average discount rate		6.5	%			5.6	%			4.7	%
Finance
Weighted average remaining lease term (years)		2.3				3.3				—
Weighted average discount rate		7.9	%			7.9	%			—

Supplemental Balance Sheet Information Related to Finance Leases

Supplemental balance sheet information related to finance leases as of December 31, 2024 and 2023 respectively, is as follows:

	2024				2023
Finance lease assets:
Other noncurrent assets	$	6,020			$	3,757
Accumulated depreciation		(1,887	)			(95	)
Total other noncurrent assets	$	4,133			$	3,662
Finance lease liabilities:
Accrued expenses		1,829				1,047
Other noncurrent liabilities		2,465				2,626
Total finance lease liabilities	$	4,294			$	3,673

Supplemental Cash Flow Information Related to Leases

Supplemental cash flow information related to leases during the years ended December 31, 2024, 2023 and 2022 respectively, is as follows:

	2024				2023				2022
Operating cash flows from operating leases	$	(31,970	)		$	(29,016	)		$	(22,775	)
Operating cash flows from finance leases		(380	)			(24	)			—
Financing cash flows from finance leases		(1,643	)			(84	)			—
Lease liabilities arising from obtaining new operating lease assets		39,539				24,808				57,618
Lease liabilities arising from obtaining new finance lease assets		2,264				3,757				—

X

- Definition

Schedule of additional information related to leases.

+ References

No definition available.

+ Details

Name:	gldd_ScheduleOfAdditionalInformationRelatedToLeasesTableTextBlock
Namespace Prefix:	gldd_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Supplemental balance sheet information related to finance leases.

+ References

No definition available.

+ Details

Name:	gldd_SupplementalBalanceSheetInformationRelatedToFinanceLeasesTableTextBlock
Namespace Prefix:	gldd_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Supplemental cash flow information related to leases.

+ References

No definition available.

+ Details

Name:	gldd_SupplementalCashFlowInformationRelatedToLeasesTableTextBlock
Namespace Prefix:	gldd_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

Name:	us-gaap_LeaseCostTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

+ Details

Name:	us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration