Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 23,134	$ 22,841
Accounts receivable—net	56,279	54,810
Contract revenues in excess of billings	70,509	68,735
Inventories	31,952	33,912
Prepaid expenses	2,258	1,486
Other current assets	35,134	44,544
Total current assets	219,266	226,328
PROPERTY AND EQUIPMENT—Net	653,283	614,608
OPERATING LEASE ASSETS	74,670	88,398
GOODWILL	76,576	76,576
INVENTORIES—Noncurrent	86,905	86,325
OTHER	16,967	18,605
TOTAL	1,127,667	1,110,840
LIABILITIES AND EQUITY
Accounts payable	90,447	83,835
Accrued expenses	27,892	37,361
Operating lease liabilities	26,851	28,687
Billings in excess of contract revenues	20,574	29,560
Total current liabilities	165,764	179,443
LONG-TERM DEBT	411,475	412,070
OPERATING LEASE LIABILITIES—Noncurrent	49,169	61,444
DEFERRED INCOME TAXES	72,338	62,232
OTHER	10,898	10,103
Total liabilities	709,644	725,292
COMMITMENTS AND CONTINGENCIES (Note 8)
EQUITY:
Common stock-$.0001 par value; 90,000 authorized, 67,189 and 66,623 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively.	7	6
Additional paid-in capital	319,776	317,337
Retained earnings	98,917	70,220
Accumulated other comprehensive loss	(677)	(2,015)
Total equity	418,023	385,548
TOTAL	$ 1,127,667	$ 1,110,840

Accounts receivable excluding contract receivable current.

No definition available.

Name:	gldd_AccountsReceivableExcludingContractReceivableCurrent
Namespace Prefix:	gldd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).