Great Lakes Dredge & Dock (GLDD) 10-Q 7 Nov 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 03, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	GLDD
Entity Registrant Name	Great Lakes Dredge & Dock CORP
Entity Central Index Key	1,372,020
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		61,675,785

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 10,469	$ 11,167
Accounts receivable—net	79,336	88,091
Contract revenues in excess of billings	82,642	95,012
Inventories	35,540	37,137
Prepaid expenses and other current assets	47,984	75,819
Total current assets	255,971	307,226
PROPERTY AND EQUIPMENT—Net	413,612	413,008
GOODWILL AND OTHER INTANGIBLE ASSETS—Net	84,631	85,075
INVENTORIES—Noncurrent	57,597	52,602
INVESTMENTS IN JOINT VENTURES	7,344	4,734
ASSETS HELD FOR SALE—Noncurrent	8,569	9,299
OTHER	13,967	21,644
TOTAL	841,691	893,588
LIABILITIES AND EQUITY
Accounts payable	67,230	103,185
Accrued expenses	51,996	69,043
Billings in excess of contract revenues	4,646	5,141
Current portion of long term debt	2,819	2,465
Total current liabilities	126,691	179,834
REVOLVING CREDIT FACILITY	90,000	104,111
NOTES PAYABLE	12,392	13,293
DEFERRED INCOME TAXES	54,491	68,449
OTHER	8,559	7,013
Total liabilities	612,967	645,698
COMMITMENTS AND CONTINGENCIES (Note 9)
Common stock—$.0001 par value; 90,000 authorized, 61,853 and 61,240 shares issued; 61,576 and 60,962 shares outstanding at September 30, 2017 and December 31, 2016, respectively.	6	6
Treasury stock, at cost	(1,433)	(1,433)
Additional paid-in capital	289,357	286,303
Accumulated deficit	(58,269)	(35,841)
Accumulated other comprehensive loss	(937)	(1,145)
Total equity	228,724	247,890
TOTAL	841,691	893,588
8% SENIOR NOTES [Member]
LIABILITIES AND EQUITY
SENIOR NOTES	$ 320,834
7 3/8% SENIOR NOTES [Member]
LIABILITIES AND EQUITY
SENIOR NOTES		$ 272,998

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	61,853,000	61,240,000
Common stock, shares outstanding	61,576,000	60,962,000
8% SENIOR NOTES [Member]
Debt instrument, interest rate, stated percentage	8.00%	8.00%
7 3/8% SENIOR NOTES [Member]
Debt instrument, interest rate, stated percentage	7.375%	7.375%

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Contract revenues	$ 163,317	$ 198,869	$ 510,762	$ 554,180
Costs of contract revenues	146,622	178,824	452,111	489,889
Gross profit	16,695	20,045	58,651	64,291
General and administrative expenses	17,522	7,187	51,584	47,027
(Gain) loss on sale of assets—net	175	(2)	355	675
Operating income (loss)	(1,002)	12,860	6,712	16,589
Interest expense—net	(6,417)	(4,819)	(18,440)	(16,443)
Equity in earnings (loss) of joint ventures	26	6	(1,441)	19
Loss on extinguishment of debt			(2,330)
Other expense	(266)	(637)	(343)	(1,918)
Income (loss) from continuing operations before income taxes	(7,659)	7,410	(15,842)	(1,753)
Income tax (provision) benefit	2,714	(2,850)	6,112	559
Income (loss) from continuing operations	(4,945)	4,560	(9,730)	(1,194)
Loss from discontinued operations, net of income taxes			(12,697)
Net income (loss)	$ (4,945)	$ 4,560	$ (22,427)	$ (1,194)
Basic earnings (loss) per share attributable to continuing operations	$ (0.08)	$ 0.08	$ (0.16)	$ (0.02)
Basic loss per share attributable to discontinued operations, net of tax			(0.21)
Basic earnings (loss) per share	$ (0.08)	$ 0.08	$ (0.37)	$ (0.02)
Basic weighted average shares	61,462	60,811	61,290	60,676
Diluted earnings (loss) per share attributable to continuing operations	$ (0.08)	$ 0.08	$ (0.16)	$ (0.02)
Diluted loss per share attributable to discontinued operations, net of tax			(0.21)
Diluted earnings (loss) per share	$ (0.08)	$ 0.08	$ (0.37)	$ (0.02)
Diluted weighted average shares	61,462	61,526	61,290	60,676

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)		$ (4,945)	$ 4,560	$ (22,427)	$ (1,194)
Currency translation adjustment—net of tax	[1]	(2)	39	(24)	596
Net unrealized gain (loss) on derivatives—net of tax	[2]	1,684	(17)	232	(17)
Other comprehensive income (loss)—net of tax		1,682	22	208	579
Comprehensive income (loss)		$ (3,263)	$ 4,582	$ (22,219)	$ (615)
[1]	Net of income tax provision of $13 and $25 for the three months ended September 30, 2017 and 2016, respectively. Net of income tax (provision) benefit of $46 and $(395) for the nine months ended September 30, 2017 and 2016, respectively.
[2]	Net of income tax benefit of $1,098 and $11 for the three months ended September 30, 2017 and 2016, respectively. Net of income tax provision of $151 and $11 for the nine months ended September 30, 2017 and 2016, respectively.

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Currency translation adjustment, tax	$ 13	$ 25	$ 46	$ (395)
Net unrealized (gain) loss on derivatives, tax	$ 1,098	$ 11	$ 151	$ 11

Condensed Consolidated Stateme7

Condensed Consolidated Statements Of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
BALANCE - value at Dec. 31, 2015	$ 252,173	$ 6	$ (1,433)	$ 283,247	$ (27,664)	$ (1,983)
BALANCE - shares at Dec. 31, 2015		60,709	(278)
Share-based compensation, value	2,276			2,276
Share-based compensation, shares		126
Vesting of restricted stock units, including impact of shares withheld for taxes, value	(162)			(162)
Vesting of restricted stock units, including impact of shares withheld for taxes, shares		71
Exercise of options and purchases from employee stock plans, value	905			905
Exercise of options and purchases from employee stock plans, shares		309
Net loss	(1,194)				(1,194)
Other comprehensive income—net of tax	579					579
BALANCE - value at Sep. 30, 2016	254,577	$ 6	$ (1,433)	286,266	(28,858)	(1,404)
BALANCE - shares at Sep. 30, 2016		61,215	(278)
BALANCE - value at Dec. 31, 2016	247,890	$ 6	$ (1,433)	286,303	(35,841)	(1,145)
BALANCE - shares at Dec. 31, 2016		61,240	(278)
Share-based compensation, value	2,514			2,514
Share-based compensation, shares		208
Vesting of restricted stock units, including impact of shares withheld for taxes, value	(328)			(328)
Vesting of restricted stock units, including impact of shares withheld for taxes, shares		147
Exercise of options and purchases from employee stock plans, value	867			867
Exercise of options and purchases from employee stock plans, shares		258
Net loss	(22,427)				(22,427)
Other comprehensive income—net of tax	208					208
BALANCE - value at Sep. 30, 2017	$ 228,724	$ 6	$ (1,433)	$ 289,357	$ (58,269)	$ (937)
BALANCE - shares at Sep. 30, 2017		61,853	(278)

Condensed Consolidated Stateme8

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES:
Net income (loss)	$ (22,427)	$ (1,194)
Loss from discontinued operations, net of income taxes	(12,697)
Income (loss) from continuing operations	(9,730)	(1,194)
Adjustments to reconcile net loss to net cash flows provided by (used in) operating activities:
Depreciation and amortization	38,186	45,692
Equity in earnings of joint ventures	(5,726)	(6,313)
Cash distributions from joint ventures	4,486	3,234
Loss on extinguishment of 7 3/8% senior notes	2,330
Deferred income taxes	(5,904)	152
Loss on sale of assets	355	675
Gain on adjustment of contingent consideration		(8,940)
Amortization of deferred financing fees	2,468	1,879
Unrealized net (gain) loss from mark-to-market valuations of derivatives	1,747	(5,285)
Unrealized foreign currency gain	(64)	(213)
Share-based compensation expense	2,514	2,276
Changes in assets and liabilities:
Accounts receivable	8,794	14,163
Contract revenues in excess of billings	12,409	5,712
Inventories	(3,443)	(6,831)
Prepaid expenses and other current assets	2,409	(6,839)
Accounts payable and accrued expenses	(27,055)	(26,317)
Billings in excess of contract revenues	(316)	2,593
Other noncurrent assets and liabilities	(482)	(1,466)
Net cash flows provided by operating activities of continuing operations	22,977	12,978
Net cash flows used in operating activities of discontinued operations	(20,900)
Cash provided by operating activities	2,077	12,978
INVESTING ACTIVITIES:
Purchases of property and equipment	(49,377)	(58,842)
Proceeds from dispositions of property and equipment	9,198	10,455
Changes in restricted cash	7,035
Cash used in investing activities	(33,144)	(48,387)
FINANCING ACTIVITIES:
Proceeds from issuance of 8% senior notes	325,000
Redemption of 7 3/8% senior notes	(275,000)
7 3/8% senior notes tender premium	744
Deferred financing fees	(4,522)	(332)
Repayments of long term note payable	(855)	(803)
Repayments of term loan facility		(3,750)
Proceeds from equipment debt	1,241
Repayments of equipment debt	(1,171)	(1,064)
Taxes paid on settlement of vested share awards	(328)	(162)
Exercise of options and purchases from employee stock plans	867	905
Borrowings under revolving loans	89,425	133,000
Repayments of revolving loans	(103,536)	(93,000)
Cash provided by financing activities	30,377	34,794
Effect of foreign currency exchange rates on cash and cash equivalents	(8)	26
Net decrease in cash and cash equivalents	(698)	(589)
Cash and cash equivalents at beginning of period	11,167	14,184
Cash and cash equivalents at end of period	10,469	13,595
Supplemental Cash Flow Information
Cash paid for interest	20,986	23,846
Cash paid (refunded) for income taxes	574	(226)
Non-cash Investing and Financing Activities
Property and equipment purchased but not yet paid	$ 2,021	$ 14,511

Condensed Consolidated Stateme9

Condensed Consolidated Statements Of Cash Flows (Parenthetical)	Sep. 30, 2017	May 31, 2017	Dec. 31, 2016
8% SENIOR NOTES [Member]
Debt instrument, interest rate, stated percentage	8.00%	8.00%	8.00%
7 3/8% SENIOR NOTES [Member]
Debt instrument, interest rate, stated percentage	7.375%	7.375%	7.375%

Basis Of Presentation

Basis Of Presentation	9 Months Ended
	Sep. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis Of Presentation	1. Basis of presentation The unaudited condensed consolidated financial statements and notes herein should be read in conjunction with the audited consolidated financial statements of Great Lakes Dredge & Dock Corporation and Subsidiaries (the “Company” or “Great Lakes”) and the notes thereto, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016. The condensed consolidated financial statements included herein have been prepared by the Company without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to the SEC’s rules and regulations, although management believes that the disclosures are adequate and make the information presented not misleading. In the opinion of management, all adjustments, which are of a normal and recurring nature (except as otherwise noted), that are necessary to present fairly the Company’s financial position as of September 30, 2017, and its results of operations for the three and nine months ended September 30, 2017 and 2016 and cash flows for the nine months ended September 30, 2017 and 2016 have been included. The components of costs of contract revenues include labor, equipment (including depreciation, maintenance, insurance and long-term rentals), subcontracts, fuel, supplies, short-term rentals and project overhead. Hourly labor is generally hired on a project-by-project basis. Costs of contract revenues vary significantly depending on the type and location of work performed and assets utilized. The Company’s cost structure includes significant annual equipment-related costs, including depreciation, maintenance, insurance and long-term rentals. These costs have averaged approximately 23% of total costs of contract revenues over the prior three years. During the year, both equipment utilization and the timing of fixed cost expenditures fluctuate significantly. Accordingly, the Company allocates these fixed equipment costs to interim periods in proportion to revenues recognized over the year, to better match revenues and expenses. Specifically, at each interim reporting date the Company compares actual revenues earned to date on its dredging contracts to expected annual revenues and recognizes equipment costs on the same proportionate basis. In the fourth quarter, any over or under allocated equipment costs are recognized such that the expense for the year equals actual equipment costs incurred during the year. The Company has two operating segments: dredging and environmental & infrastructure, which are also the Company’s reportable segments and reporting units of which the Company tests goodwill for impairment. The Company performed its most recent annual test of impairment as of July 1, 2017 with no indication of impairment as of the test date. The Company will perform its next scheduled annual test of goodwill in the third quarter of 2018 should no triggering events occur which would require a test prior to the next annual test. The condensed consolidated results of operations and comprehensive income for the interim periods presented herein are not necessarily indicative of the results to be expected for the full year. Recent Accounting Pronouncements In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update No. 2017-04 (“ASU 2017-04”), Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The Company does not anticipate that the adoption of ASU 2017-04 will have a material effect on the Company’s consolidated financial statements. In November 2016, the FASB issued Accounting Standard Update No. 2016-18 (“ASU 2016-18”), Statement of Cashflows (Topic 230): Restricted Cash The Company does not anticipate that the adoption of ASU 2016-18 will have a material effect on the Company’s consolidated financial statements. In August 2016, the FASB issued Accounting Standard Update No. 2016-15 (“ASU 2016-15”), Classification of Certain Cash Receipts and Cash Payments, In February 2016, the FASB issued Accounting Standard Update No. 2016-02 (“ASU 2016-02”), Leases (Topic 842) In May 2014, the FASB issued Accounting Standard Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) Accounting Standard Updates related to Accounting Standards Codification Topic 606 (collectively, “ASC 606”),

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	2. Earnings per share Basic earnings per share is computed by dividing net income attributable to common stockholders by the weighted-average number of common shares outstanding during the reporting period. Diluted earnings per share is computed similarly to basic earnings per share except that it reflects the potential dilution that could occur if dilutive securities or other obligations to issue common stock were exercised or converted into common stock. For the three months ended September 30, 2017, the dilutive effect of 611 thousand stock options and restricted stock units were excluded from the diluted weighted-average common shares outstanding as the Company incurred a loss during this period. For the nine months ended September 30, 2017 and 2016, the dilutive effect of 646 thousand and 576 thousand stock options and restricted stock units, respectively, were excluded from the diluted weighted-average common shares outstanding as the Company incurred a loss during these periods. For the three months ended September 30, 2017 and 2016, 1,288 thousand and 1,594 thousand stock options and restricted stock units, respectively, were excluded from the calculation of diluted earnings per share based on the application of the treasury stock method, as such stock options and restricted stock units were determined to be anti-dilutive. Similarly, for the nine months ended September 30, 2017 and 2016, 1,399 thousand and 1,603 thousand stock options and restricted stock units, respectively, were excluded from the calculation of diluted earnings per share as such stock options and restricted stock units were determined to be anti-dilutive. The computations for basic and diluted earnings (loss) per share are as follows: Three Months Ended Nine Months Ended (shares in thousands) September 30, September 30, 2017 2016 2017 2016 Income (loss) from continuing operations $ (4,945 ) $ 4,560 $ (9,730 ) $ (1,194 ) Loss from discontinued operations, net of income taxes — — (12,697 ) — Net income (loss) (4,945 ) 4,560 (22,427 ) (1,194 ) Weighted-average common shares outstanding — basic 61,462 60,811 61,290 60,676 Effect of stock options and restricted stock units — 715 — — Weighted-average common shares outstanding — diluted 61,462 61,526 61,290 60,676 Earnings (loss) per share from continuing operations — basic $ (0.08 ) $ 0.08 $ (0.16 ) $ (0.02 ) Earnings (loss) per share from continuing operations — diluted $ (0.08 ) $ 0.08 $ (0.16 ) $ (0.02 )

Accounts Receivable And Contrac

Accounts Receivable And Contracts In Progress	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Accounts receivable and contracts in progress	3. Accounts receivable and contracts in progress Accounts receivable at September 30, 2017 and December 31, 2016 are as follows: September 30, December 31, 2017 2016 Completed contracts $ 10,206 $ 18,727 Contracts in progress 54,587 53,137 Retainage 19,785 21,399 84,578 93,263 Allowance for doubtful accounts (767 ) (747 ) Total accounts receivable—net $ 83,811 $ 92,516 Current portion of accounts receivable—net $ 79,336 $ 88,091 Long-term accounts receivable and retainage 4,475 4,425 Total accounts receivable—net $ 83,811 $ 92,516 The components of contracts in progress at September 30, 2017 and December 31, 2016 are as follows: September 30, December 31, 2017 2016 Costs and earnings in excess of billings: Costs and earnings for contracts in progress $ 495,877 $ 587,371 Amounts billed (432,544 ) (511,548 ) Costs and earnings in excess of billings for contracts in progress 63,333 75,823 Costs and earnings in excess of billings for completed contracts 19,309 19,189 Total contract revenues in excess of billings $ 82,642 $ 95,012 Billings in excess of costs and earnings: Amounts billed $ (347,656 ) $ (268,754 ) Costs and earnings for contracts in progress 343,010 263,613 Total billings in excess of contract revenues $ (4,646 ) $ (5,141 ) The Company has $17,860 included in costs in excess of billings that are dependent upon the sale of environmental credits earned for a wetland mitigation project. The sale of these credits is subject to market factors that could cause the amount of expected revenue to be higher or lower than currently estimated. If the amount of proceeds received from the sale of the environmental credits is lower than our expectations, we could sustain a loss of part or all of the costs incurred related to this project. Additionally, the timing of realization may be impacted by a delay in the sale of these environmental credits, resulting in a longer period to recover our investment.

Accrued Expenses

Accrued Expenses	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Accrued Expenses	4. Accrued expenses Accrued expenses at September 30, 2017 and December 31, 2016 are as follows: September 30, December 31, 2017 2016 Insurance $ 18,601 $ 18,114 Interest 10,071 8,660 Payroll and employee benefits 8,330 10,028 Accumulated deficit in joint ventures 3,012 17,016 Percentage of completion adjustment 2,546 3,322 Income and other taxes 1,727 3,208 Other 7,709 8,695 Total accrued expenses $ 51,996 $ 69,043

Long-term Debt

Long-term Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-Term Debt	5. Long-term debt Credit Agreement On December 30, 2016, the Company, Great Lakes Dredge & Dock Company, LLC, NASDI Holdings, LLC, Great Lakes Dredge & Dock Environmental, Inc., Great Lakes Environmental & Infrastructure Solutions, LLC and Great Lakes Environmental & Infrastructure, LLC (collectively, the “Credit Parties”) entered into a revolving credit and security agreement, as subsequently amended, (the “Credit Agreement”) with certain financial institutions from time to time party thereto as lenders, PNC Bank, National Association, as Agent, PNC Capital Markets, The PrivateBank and Trust Company, Suntrust Robinson Humphrey, Inc., Capital One, National Association and Bank of America, N.A., as Joint Lead Arrangers and Joint Bookrunners, Texas Capital Bank, National Association, as Syndication Agent and Woodforest National Bank, as Documentation Agent. The Credit Agreement, which replaced the Company’s former revolving credit agreement, provides for a senior secured revolving credit facility in an aggregate principal amount of up to $250,000, subfacilities for the issuance of standby letters of credit up to a $250,000 sublimit and swingline loans up to a $25,000 sublimit. The maximum borrowing capacity under the Credit Agreement is determined by a formula and may fluctuate depending on the value of the collateral included in such formula at the time of determination. The Credit Agreement also includes an increase option that will allow the Company to increase the senior secured revolving credit facility by an aggregate principal amount of up to $100,000. This increase is subject to lenders providing incremental commitments for such increase, the Credit Parties having adequate borrowing capacity and provided that no default or event of default exists both before and after giving effect to such incremental commitment increase. The Credit Agreement contains customary representations and affirmative and negative covenants, including a springing financial covenant that requires the Credit Parties to maintain a fixed charge coverage ratio (ratio of earnings before income taxes, depreciation and amortization, net interest expenses, non-cash charges and losses and certain other non-recurring charges, minus capital expenditures, income and franchise taxes, to net cash interest expense plus scheduled cash principal payments with respect to debt plus restricted payments paid in cash) of not more than 1.10 to 1.00. The Credit Parties are also restricted in the amount of capital expenditures they may make in each fiscal year. The Credit Agreement also contains customary events of default (including non-payment of principal or interest on any material debt and breaches of covenants) as well as events of default relating to certain actions by the Company’s surety bonding providers. The obligations of the Credit Parties under the Credit Agreement will be unconditionally guaranteed, on a joint and several basis, by each existing and subsequently acquired or formed material direct and indirect domestic subsidiary of the Company. Borrowings under the Credit Agreement were or will be used to refinance existing indebtedness under the Company’s former revolving credit agreement, refinance existing indebtedness under the Company’s former term loan agreement, pay fees and expenses related to the Credit Agreement, finance acquisitions permitted under the Credit Agreement, finance ongoing working capital and for other general corporate purposes. The Credit Agreement matures on December 30, 2019. The obligations under the Credit Agreement are secured by substantially all of the assets of the Credit Parties. The outstanding obligations thereunder shall be secured by a valid first priority perfected lien on substantially all of the vessels of the Credit Parties and a valid perfected lien on all domestic accounts receivable and substantially all other assets of the Credit Parties, subject to the permitted liens and interests of other parties (including the Company’s surety bonding provider). Interest on the senior secured revolving credit facility of the Credit Agreement is equal to either a base rate option or LIBOR option, at the Company’s election. The base rate option is (1) the base commercial lending rate of PNC Bank, National Association, as publicly announced plus (2)(a) an interest margin of 2.0% or (b) after the date on which a borrowing base certificate is required to be delivered under Section 9.2 of the Credit Agreement (commencing with the fiscal quarter ending December 31, 2017, the “Adjustment Date”), an interest margin ranging between 1.5% and 2.0% depending on the quarterly average undrawn availability on the senior secured revolving credit facility. The LIBOR option is the sum of (1) LIBOR and (2)(a) an interest margin of 3.0% or (b) after the Adjustment Date, an interest rate margin ranging between 2.5% to 3.0% per annum depending on the quarterly average undrawn availability on the senior secured revolving credit facility. The Credit Agreement is subject to an unused fee ranging from 0.25% to 0.375% per annum depending on the amount of average daily outstandings under the senior secured revolving credit facility. As of September 30, 2017, the Company had $90,000 of borrowings on the revolver and $33,750 of letters of credit outstanding, resulting in $101,796 of availability under the Credit Agreement. Prior revolving credit agreement and term loan facility In conjunction with the Credit Agreement entered into on December 30, 2016, the senior revolving credit agreement with an aggregate principal amount of up to $199,000 and the senior secured term loan facility consisting of a term loan in an aggregate principal amount of $50,000 were paid in full. Depending on the Company’s consolidated leverage ratio, previous borrowings under the revolving credit facility bore interest at the option of the Company at either a LIBOR rate plus a margin of between 1.50% to 2.50% per annum or a base rate plus a margin of between 0.50% to 1.50% per annum. The previous borrowings under the senior secured term loan facility bore interest at a fixed rate of 4.655% per annum. Senior Notes In May 2017, the Company issued $325,000 of 8.000% senior notes (“8% Senior Notes”) due May 15, 2022. The 8% Senior Notes were issued at 100% of face value resulting in net proceeds of $321,653, net of underwriting fees. In connection with the issuance of the 8% Senior Notes, the Company retired all of its $275,000 of 7.375% senior notes due February 2019 for $282,638, which included a tender premium and accrued and unpaid interest. The Company used the remaining net proceeds from the debt offering to reduce the Company’s indebtedness under its Credit Agreement. Other The Company enters into note arrangements to finance certain vessels and ancillary equipment. The current portion of all equipment notes is $2,820. The long term portion is $13,518 and is included in notes payable or other long term liabilities.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	6. Fair value measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A fair value hierarchy has been established by GAAP that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The accounting guidance describes three levels of inputs that may be used to measure fair value: Level 1—Quoted prices in active markets for identical assets or liabilities. Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The Company utilizes the market approach to measure fair value for its financial assets and liabilities. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. At times, the Company holds certain derivative contracts that it uses to manage foreign currency risk or commodity price risk. The Company does not hold or issue derivatives for speculative or trading purposes. The fair values of these financial instruments are summarized as follows: Fair Value Measurements at Reporting Date Using Description At September 30, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fuel hedge contracts $ 929 $ — 929 $ — Fair Value Measurements at Reporting Date Using Description At December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fuel hedge contracts $ 2,293 $ — $ 2,293 $ — Fuel hedge contracts The Company is exposed to certain market risks, primarily commodity price risk as it relates to diesel fuel purchase requirements, which occur in the normal course of business. The Company enters into heating oil commodity swap contracts to hedge the risk that fluctuations in diesel fuel prices will have an adverse impact on cash flows associated with its domestic dredging contracts. The Company’s goal is to hedge approximately 80% of the fuel requirements for work in domestic backlog. As of September 30, 2017, the Company was party to various swap arrangements to hedge the price of a portion of its diesel fuel purchase requirements for work in its backlog to be performed through July 2018. As of September 30, 2017, there were 8.2 million gallons remaining on these contracts which represent approximately 80% of the Company’s forecasted domestic fuel purchases through July 2018. Under these swap agreements, the Company will pay fixed prices ranging from $1.53 to $1.76 per gallon. At September 30, 2017 and December 31, 2016, the fair value assets of the fuel hedge contracts were estimated to be $929 and$2,293, respectively, and are recorded in prepaid expenses and other current assets. For fuel hedge contracts considered to be highly effective, the losses reclassified to earnings from changes in fair value of derivatives, net of cash settlements and taxes, for the nine months ended September 30, 2017 were $160. The remaining gains and losses included in accumulated other comprehensive loss at September 30, 2017 will be reclassified into earnings over the next eleven months, corresponding to the period during which the hedged fuel is expected to be utilized. Changes in the fair value of fuel hedge contracts not considered highly effective are recorded as cost of contract revenues in the Statement of Operations. The fair values of fuel hedges are corroborated using inputs that are readily observable in public markets; therefore, the Company determines fair value of these fuel hedges using Level 2 inputs. The Company is exposed to counterparty credit risk associated with non-performance of its various derivative instruments. The Company’s risk would be limited to any unrealized gains on current positions. To help mitigate this risk, the Company transacts only with counterparties that are rated as investment grade or higher. In addition, all counterparties are monitored on a continuous basis. The fair value of the fuel hedge contracts outstanding as of September 30, 2017 and December 31, 2016 is as follows: Fair Value at September 30, December 31, Balance Sheet Location 2017 2016 Asset derivatives: Derivatives designated as hedging instruments Fuel hedge contracts Prepaid expenses and other current assets 929 $ 546 Derivatives not designated as hedging instruments Fuel hedge contracts Prepaid expenses and other current assets — 1,747 Total asset derivatives $ 929 $ 2,293 Accumulated other comprehensive income Changes in the components of the accumulated balances of other comprehensive income are as follows: Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Cumulative translation adjustments—net of tax $ (2 ) $ 39 $ (24 ) $ 596 Derivatives: Reclassification of derivative losses to earnings—net of tax (35 ) 46 160 46 Change in fair value of derivatives—net of tax 1,719 (63 ) 72 (63 ) Net unrealized gain (loss) on derivatives—net of tax 1,684 (17 ) 232 (17 ) Total other comprehensive income $ 1,682 $ 22 $ 208 $ 579 Adjustments reclassified from accumulated balances of other comprehensive income (loss) to earnings are as follows: Three Months Ended Nine Months Ended September 30, September 30, Statement of Operations Location 2017 2016 2017 2016 Derivatives: Fuel Costs of contract revenues $ (59 ) $ 76 $ 264 $ 76 Income tax (provision) benefit (24 ) 30 104 30 $ (35 ) $ 46 $ 160 $ 46 Other financial instruments The carrying value of financial instruments included in current assets and current liabilities approximates fair value due to the short-term maturities of these instruments. Based on timing of the cash flows and comparison to current market interest rates, the carrying value of our revolving credit agreement approximates fair value. In May 2017, the Company issued a total of $325,000 of 8% senior notes due May 15, 2022, which were outstanding at September 30, 2017 (see Note 5). The 8% Senior Notes are senior unsecured obligations of the Company and its subsidiaries that guarantee the 8% Senior Notes. The fair value of the senior notes was $337,188 at September 30, 2017, which is a Level 1 fair value measurement as the senior notes’ value was obtained using quoted prices in active markets. It is impracticable to determine the fair value of outstanding letters of credit or performance, bid and payment bonds due to uncertainties as to the amount and timing of future obligations, if any.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	7 . Share-based compensation On May 11, 2017, the Company’s stockholders approved the Great Lakes Dredge & Dock Corporation 2017 Long-Term Incentive Plan (the “Incentive Plan”), which previously had been approved by the Company’s board of directors subject to stockholder approval. The Incentive Plan permits the granting of stock options, stock appreciation rights, restricted stock and restricted stock units to the Company’s employees and directors for up to 3.3 million shares of common stock, plus an additional 1.7 million shares underlying equity awards issued under the 2007 Long-Term Incentive Plan. During the nine months ended September 30, 2017, the Company granted 920 thousand restricted stock units to certain employees. In addition, all non-employee directors on the Company’s board of directors are paid a portion of their board-related compensation in stock grants. Compensation cost charged to expense related to share-based compensation arrangements was $756 and $270 for the three months ended September 30, 2017 and 2016, respectively, and $2,514 and $2,276 for the nine months ended September 30, 2017 and 2016, respectively. Beginning in the first quarter of 2017, the Company includes income taxes related to share-based compensation as a component of net income.

Restructuring Charges

Restructuring Charges	9 Months Ended
	Sep. 30, 2017
Restructuring And Related Activities [Abstract]
Restructuring Charges	8 . Restructuring charges In 2017, a strategic review was begun to improve the Company's financial results in both domestic and international operations enabling debt reduction, improvements in return on capital and the continued renewal of our extensive fleet with new and efficient dredges to best serve our domestic and international clients. As a result of this review, management began execution of a plan to reduce general and administrative and overhead expenses, retire certain underperforming and underutilized assets and closeout the Company’s Brazil operations. These changes will result in a restructuring charge of approximately $42,000-$47,000, including severance, asset retirements and closeout costs, approximately $39,000-$44,000 of which will be non-cash. The majority of the charge will be recognized in the fourth quarter of 2017 with the remainder to be recognized in the following year. Restructuring charges currently recognized for the above actions are summarized as follows: Nine Months Ended September 30, 2017 Operating overhead $ 316 General and administrative expenses 1,306 Total Dredging 1,622 Operating overhead $ - General and administrative expenses 415 Total Environmental & Infrastructure 415 Operating overhead $ 316 General and administrative expenses 1,721 Total Consolidated 2,037

Commitments And Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments And Contingencies	9. Commitments and contingencies Commercial commitments Performance and bid bonds are customarily required for dredging and marine construction projects, as well as some environmental & infrastructure projects. The Company has bonding agreements with Argonaut Insurance Company, Berkley Insurance Company, Chubb Surety and Liberty Mutual Insurance Company, under which the Company can obtain performance, bid and payment bonds. The Company also has outstanding bonds with Travelers Casualty, Surety Company of America and Zurich American Insurance Company (“Zurich”). Bid bonds are generally obtained for a percentage of bid value and amounts outstanding typically range from $1,000 to $10,000. At September 30, 2017, the Company had outstanding performance bonds with a notional amount of approximately $1,296,867, of which $41,085 relates to projects from the Company’s historical environmental & infrastructure businesses. The revenue value remaining in backlog related to these projects totaled approximately $456,005. In connection with the sale of our historical demolition business, the Company was obligated to keep in place the surety bonds on pending demolition projects for the period required under the respective contract for a project and issued Zurich a letter of credit related to this exposure. In February 2017, the Company was notified by Zurich of an alleged default triggered on a historical demolition surety performance bond in the aggregate of approximately $20,000 for failure of the contractor to perform in accordance with the terms of a project. In May 2017, Zurich drew upon the letter of credit in the amount of $20,881. In order to fund the draw on the letter of credit, the Company had to increase the borrowings on its revolving credit facility. As the outstanding letters of credit previously reduced our availability under the revolving credit facility, this draw down on our letter of credit does not impact our liquidity or capital availability. Pursuant to the terms of sale of our historical demolition business, the Company received an indemnification from the buyer for losses resulting from the bonding arrangement. The Company intends to aggressively pursue enforcement of the indemnification provisions if the buyer of the historical demolition business is found to be in default of its obligations. The Company cannot estimate the amount or range of recoveries related to the indemnification or resolution of the Company’s responsibilities under the surety bond. The surety bond claim impact has been included in discontinued operations and is discussed in Note 11. Certain foreign projects performed by the Company have warranty periods, typically spanning no more than one to three years beyond project completion, whereby the Company retains responsibility to maintain the project site to certain specifications during the warranty period. Generally, any potential liability of the Company is mitigated by insurance, shared responsibilities with consortium partners, and/or recourse to owner-provided specifications. Legal proceedings and other contingencies As is customary with negotiated contracts and modifications or claims to competitively bid contracts with the federal government, the government has the right to audit the books and records of the Company to ensure compliance with such contracts, modifications, or claims, and the applicable federal laws. The government has the ability to seek a price adjustment based on the results of such audit. Any such audits have not had, and are not expected to have, a material impact on the financial position, operations, or cash flows of the Company. Various legal actions, claims, assessments and other contingencies arising in the ordinary course of business are pending against the Company and certain of its subsidiaries. These matters are subject to many uncertainties, and it is possible that some of these matters could ultimately be decided, resolved, or settled adversely to the Company. Although the Company is subject to various claims and legal actions that arise in the ordinary course of business, except as described below, the Company is not currently a party to any material legal proceedings or environmental claims. The Company records an accrual when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. The Company does not believe any of these proceedings, individually or in the aggregate, would be expected to have a material effect on results of operations, cash flows or financial condition. On April 23, 2014, the Company completed the sale of NASDI, LLC (“NASDI”) and Yankee Environmental Services, LLC (“Yankee”), which together comprised the Company’s historical demolition business, to a privately owned demolition company. Legal actions brought by the Company to enforce the buyer’s obligations under the sale agreement are described below. On January 14, 2015, the Company and our subsidiary, NASDI Holdings, LLC, brought an action in the Delaware Court of Chancery to enforce the terms of the Company’s agreement to sell NASDI and Yankee. Under the terms of the agreement, the Company received cash of $5,309 and retained the right to receive additional proceeds based upon future collections of outstanding accounts receivable and work in process existing at the date of close. The Company seeks specific performance of the buyer’s obligation to collect and to remit the additional proceeds, and other related relief. Defendants have filed counterclaims alleging that the Company misrepresented the quality of its contracts and receivables prior to the sale. The Company denies defendants’ allegations and intends to vigorously defend against the counterclaims. Also pursuant to the terms of the agreement to sell NASDI and Yankee and as described above, the Company agreed to keep in place surety bonds for certain pending demolition projects, and the buyer agreed to indemnify the Company for all losses relating to those bonds. As described above, in May 2017, Zurich drew upon the Company’s letter of credit in the amount of $20,881. On May 26, 2017, the Company and NASDI Holdings, LLC brought a second action in the Delaware Court of Chancery seeking indemnification for all losses relating to the bonds for that project. Except as noted above, the Company has not accrued any amounts with respect to the above matters, as the Company does not believe, based on information currently known to it, that a loss relating to these matters is probable, and an estimate of a range of potential losses relating to these matters cannot reasonably be made.

Investments

Investments	9 Months Ended
	Sep. 30, 2017
Equity Method Investments And Joint Ventures [Abstract]
Investments	10. Investments The Company owned 50% of TerraSea Environmental Solutions (“TerraSea”) as a joint venture. TerraSea was engaged in the environmental services business through its ability to remediate contaminated soil and dredged sediment treatment. At December 31, 2016, the Company had net advances to TerraSea of $24,696, which were recorded in prepaid expenses and other current assets. The Company had an accumulated deficit in joint ventures, which represents losses recognized to date in excess of our investment in TerraSea, of $17,016 at December 31, 2016, which was presented in accrued expenses. During the third quarter of 2017, the Company finalized the wind down of TerraSea with its joint venture partner. During the second quarter of 2017, the Company and the joint venture partner agreed to a final resolution of the net advances through additional funding of the joint venture. The Company recorded additional losses of $1,458 related to this agreement during the nine months ended September 30, 2017. There are no remaining TerraSea projects at September 30, 2017.

Business Combinations And Dispo

Business Combinations And Dispositions	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Business Combinations And Dispositions	11. Business combinations and dispositions Discontinued operations On April 23, 2014, the Company entered into an agreement and completed the sale of NASDI and Yankee, its two former subsidiaries that comprised our historical demolition business. Under the terms of the agreement, the Company received cash of $5,309 and retained the right to receive additional proceeds based upon future collections of outstanding accounts receivable and work in process existing at the date of close, including recovery of outstanding claims for additional compensation from customers, net of future payments of accounts payable existing at the date of close, including any future payments of obligations associated with outstanding claims. The amount and timing of any realization of additional net proceeds has been impacted by the litigation with the buyer of the historical demolition business. However, management believes that the ultimate resolution of these matters will not be material to the Company’s consolidated financial position or results of operations. As discussed in Note 9, the Company was notified by Zurich of an alleged default triggered on a historical demolition surety performance bond in the aggregate of approximately $20,000 for failure of the contractor to perform in accordance with the terms of a project. Zurich could be obligated to reimburse the loss, damage and expense that may arise from the alleged default. The Company estimated its exposure to a surety bond claim, including associated expenses, to be $20,900 and has recorded this amount in discontinued operations during the nine months ended September 30, 2017 as follows: Nine Months Ended September 30, 2017 Revenue $ — Loss before income taxes from discontinued operations $ (20,900 ) Income tax benefit 8,203 Loss from discontinued operations, net of income taxes $ (12,697 ) Magnus Pacific acquisition On November 4, 2014, the Company acquired Magnus Pacific Corporation (“Magnus”), a California corporation, for an aggregate purchase price of approximately $40 million. Under the terms of the acquisition, the aggregate purchase price is satisfied by payment of $25 million paid at closing, the issuance of a promissory note and an earnout payment. Magnus did not reach the minimum EBITDA threshold for 2015 designated in the secured promissory note; therefore, during 2015, the Company reduced the remaining fair value to zero. Under the terms of the acquisition, as amended, the maximum potential aggregate earnout (the “Earnout Payment”) is $11,400 Other During the fourth quarter of 2016, the Company sold assets associated with certain service lines of the environmental & infrastructure segment’s business, excluding assets supporting the remediation service line.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Information	12. Segment information The Company and its subsidiaries currently operate in two reportable segments: dredging and environmental & infrastructure. The Company’s financial reporting systems present various data for management to run the business, including profit and loss statements prepared according to the segments presented. Management uses operating income to evaluate performance between the two segments. Segment information for the periods presented is provided as follows: Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Dredging Contract revenues $ 133,862 $ 154,448 $ 439,423 $ 453,122 Operating income 2,725 5,553 13,313 26,762 Environmental & infrastructure Contract revenues $ 29,667 $ 44,565 $ 73,602 $ 103,437 Operating income (loss) (3,727 ) 7,307 (6,601 ) (10,173 ) Intersegment revenues $ (212 ) $ (144 ) $ (2,263 ) $ (2,379 ) Total Contract revenues $ 163,317 $ 198,869 $ 510,762 $ 554,180 Operating income (loss) (1,002 ) 12,860 6,712 16,589 Foreign dredging revenue for the three and nine months ended September 30, 2017 of $5,849 and $37,423, respectively, was mostly attributable to work done in the Middle East. Foreign dredging revenue for the three and nine months ended September 30, 2016 was $21,139 and $34,331, respectively. The majority of the Company’s long-lived assets are marine vessels and related equipment. At any point in time, the Company may employ certain assets outside of the U.S., as needed, to perform work on the Company’s foreign projects.

Subsidiary Guarantors

Subsidiary Guarantors	9 Months Ended
	Sep. 30, 2017
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Subsidiary Guarantors	13. Subsidiary guarantors The Company’s long-term debt at September 30, 2017 includes $325,000 of 8.000% senior notes due May 15, 2022. The Company’s obligations under these senior unsecured notes are guaranteed by certain of the Company’s 100% owned domestic subsidiaries. Such guarantees are full, unconditional and joint and several. In connection with the 8% Senior Notes issued in May 2017, certain of the Company’s 100% owned domestic subsidiaries were released as subsidiary guarantors of the debt. Accordingly, the 2016 financial information included below has been recast to reflect the release of these entities as subsidiary guarantors. The following supplemental financial information sets forth for the Company’s subsidiary guarantors (on a combined basis), the Company’s non-guarantor subsidiaries (on a combined basis) and Great Lakes Dredge & Dock Corporation, exclusive of its subsidiaries (“GLDD Corporation”): (i) balance sheets as of September 30, 2017 and December 31, 2016; (ii) statements of operations and comprehensive income (loss) for the three and nine months ended September 30, 2017 and 2016; and (iii) statements of cash flows for the nine months ended September 30, 2017 and 2016. GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET AS OF SEPTEMBER 30, 2017 (In thousands) ASSETS Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals CURRENT ASSETS: Cash and cash equivalents $ 7,179 $ 3,263 $ 27 $ — $ 10,469 Accounts receivable — net 76,215 4,204 — (1,083 ) 79,336 Contract revenues in excess of billings 82,355 287 — — 82,642 Inventories 35,540 - — — 35,540 Prepaid expenses and other current assets 45,459 2,513 12 — 47,984 Total current assets 246,748 10,267 39 (1,083 ) 255,971 PROPERTY AND EQUIPMENT—Net 413,504 108 — — 413,612 GOODWILL AND OTHER INTANGIBLE ASSETS—Net 84,270 361 — — 84,631 INVENTORIES — Noncurrent 57,597 — — — 57,597 INVESTMENTS IN JOINT VENTURES 7,344 — — — 7,344 ASSETS HELD FOR SALE—Noncurrent 8,436 133 — — 8,569 RECEIVABLES FROM AFFILIATES 50,380 19,697 176,606 (246,683 ) — INVESTMENTS IN SUBSIDIARIES — — 543,529 (543,529 ) — OTHER 8,706 1 5,260 — 13,967 TOTAL $ 876,985 $ 30,567 $ 725,434 $ (791,295 ) $ 841,691 LIABILITIES AND EQUITY CURRENT LIABILITIES: Accounts payable $ 68,025 $ 288 $ — $ (1,083 ) $ 67,230 Accrued expenses 37,655 4,286 10,055 — 51,996 Billings in excess of contract revenues 4,646 — — — 4,646 Current portion of long term debt 1,624 — 1,195 — 2,819 Total current liabilities 111,950 4,574 11,250 (1,083 ) 126,691 8% SENIOR NOTES — — 320,834 — 320,834 REVOLVING CREDIT FACILITY — — 90,000 — 90,000 NOTES PAYABLE — — 12,392 — 12,392 DEFERRED INCOME TAXES (565 ) — 55,056 — 54,491 PAYABLES TO AFFILIATES 177,925 61,758 7,000 (246,683 ) — INVESTMENTS IN SUBSIDIARIES 31,167 — — (31,167 ) — OTHER 8,381 — 178 — 8,559 Total liabilities 328,858 66,332 496,710 (278,933 ) 612,967 TOTAL EQUITY 548,127 (35,765 ) 228,724 (512,362 ) 228,724 TOTAL $ 876,985 $ 30,567 $ 725,434 $ (791,295 ) $ 841,691 GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET AS OF DECEMBER 31, 2016 (In thousands) ASSETS Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals CURRENT ASSETS: Cash and cash equivalents $ 10,414 $ 751 $ 2 $ — $ 11,167 Accounts receivable — net 75,412 14,242 — (1,563 ) 88,091 Contract revenues in excess of billings 91,478 3,534 — — 95,012 Inventories 37,137 — — — 37,137 Prepaid expenses and other current assets 73,131 2,688 — — 75,819 Total current assets 287,572 21,215 2 (1,563 ) 307,226 PROPERTY AND EQUIPMENT—Net 407,516 5,492 — — 413,008 GOODWILL AND OTHER INTANGIBLE ASSETS—Net 84,643 432 — — 85,075 INVENTORIES — Noncurrent 52,602 — — — 52,602 INVESTMENTS IN JOINT VENTURES 4,685 49 — — 4,734 ASSETS HELD FOR SALE—Noncurrent 8,390 909 — — 9,299 RECEIVABLES FROM AFFILIATES 58,284 16,807 82,340 (157,431 ) — INVESTMENTS IN SUBSIDIARIES — — 636,216 (636,216 ) — OTHER 14,692 1 6,951 — 21,644 TOTAL $ 918,384 $ 44,905 $ 725,509 $ (795,210 ) $ 893,588 LIABILITIES AND EQUITY CURRENT LIABILITIES: Accounts payable $ 101,795 $ 2,879 $ 17 $ (1,506 ) $ 103,185 Accrued expenses 55,940 3,222 9,881 — 69,043 Billings in excess of contract revenues 4,699 499 — (57 ) 5,141 Current portion of long term debt 305 1,015 1,145 — 2,465 Total current liabilities 162,739 7,615 11,043 (1,563 ) 179,834 7 3/8% SENIOR NOTES — — 272,998 — 272,998 REVOLVING CREDIT FACILITY — — 104,111 — 104,111 NOTE PAYABLE — — 13,293 — 13,293 DEFERRED INCOME TAXES (1,833 ) — 70,282 — 68,449 PAYABLES TO AFFILIATES 80,769 70,921 5,741 (157,431 ) — INVESTMENTS IN SUBSIDIARIES 32,000 — — (32,000 ) — OTHER 5,925 937 151 — 7,013 Total liabilities 279,600 79,473 477,619 (190,994 ) 645,698 TOTAL EQUITY 638,784 (34,568 ) 247,890 (604,216 ) 247,890 TOTAL $ 918,384 $ 44,905 $ 725,509 $ (795,210 ) $ 893,588 GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2017 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 163,056 $ 836 $ — $ (575 ) $ 163,317 Costs of contract revenues (145,614 ) (1,583 ) — 575 (146,622 ) Gross profit 17,442 (747 ) — — 16,695 OPERATING EXPENSES: General and administrative expenses 17,647 (125 ) — — 17,522 (Gain) loss on sale of assets—net (48 ) 223 — — 175 Operating income (157 ) (845 ) — — (1,002 ) Interest expense—net 414 (323 ) (6,508 ) — (6,417 ) Equity in loss of subsidiaries (253 ) — (1,151 ) 1,404 — Equity in loss of joint ventures 26 — — — 26 Other expense (130 ) (136 ) — — (266 ) Income (loss) before income taxes (100 ) (1,304 ) (7,659 ) 1,404 (7,659 ) Income tax benefit — — 2,714 — 2,714 Net income (loss) $ (100 ) $ (1,304 ) $ (4,945 ) $ 1,404 $ (4,945 ) Comprehensive income (loss) $ 1,584 $ (1,306 ) $ (3,263 ) $ (278 ) $ (3,263 ) GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2016 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 186,765 $ 12,000 $ — $ 104 $ 198,869 Costs of contract revenues (163,397 ) (15,323 ) — (104 ) (178,824 ) Gross profit 23,368 (3,323 ) — — 20,045 OPERATING EXPENSES: General and administrative expenses 4,047 3,138 2 — 7,187 Gain on sale of assets—net — (2 ) — — (2 ) Operating income (loss) 19,321 (6,459 ) (2 ) — 12,860 Interest expense—net 1,294 (398 ) (5,715 ) — (4,819 ) Equity in earnings (loss) of subsidiaries (5,829 ) — 13,041 (7,212 ) — Equity in earnings of joint ventures 6 — — — 6 Other income (expense) (645 ) 8 — — (637 ) Income (loss) before income taxes 14,147 (6,849 ) 7,324 (7,212 ) 7,410 Income tax provision — (86 ) (2,764 ) — (2,850 ) Net income (loss) $ 14,147 $ (6,935 ) $ 4,560 $ (7,212 ) $ 4,560 Comprehensive income (loss) $ 14,147 $ (6,913 ) $ 4,582 $ (7,234 ) $ 4,582 GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE LOSS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2017 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 507,354 $ 5,113 $ — $ (1,705 ) $ 510,762 Costs of contract revenues (447,954 ) (5,862 ) — 1,705 (452,111 ) Gross profit 59,400 (749 ) — — 58,651 OPERATING EXPENSES: General and administrative expenses 50,973 611 — — 51,584 Loss on sale of assets—net 212 143 — — 355 Operating income (loss) 8,215 (1,503 ) — — 6,712 Interest expense—net 1,051 (981 ) (18,510 ) — (18,440 ) Equity in earnings of subsidiaries 788 — 4,984 (5,772 ) — Equity in loss of joint ventures (1,441 ) — — — (1,441 ) Loss on extinguishment of debt — — (2,330 ) — (2,330 ) Other income (expense) (593 ) 250 — — (343 ) Income (loss) from continuing operations before income taxes 8,020 (2,234 ) (15,856 ) (5,772 ) (15,842 ) Income tax (provision) benefit — (14 ) 6,126 — 6,112 Income (loss) from continuing operations 8,020 (2,248 ) (9,730 ) (5,772 ) (9,730 ) Loss from discontinued operations, net of income taxes (20,900 ) — (12,697 ) 20,900 (12,697 ) Net income (loss) $ (12,880 ) $ (2,248 ) $ (22,427 ) $ 15,128 $ (22,427 ) Comprehensive loss $ (12,648 ) $ (2,272 ) $ (22,219 ) $ 14,920 $ (22,219 ) GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2016 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 519,093 $ 36,628 $ — $ (1,541 ) $ 554,180 Costs of contract revenues (440,487 ) (50,943 ) — 1,541 (489,889 ) Gross profit 78,606 (14,315 ) — — 64,291 OPERATING EXPENSES: General and administrative expenses 36,962 10,118 (53 ) — 47,027 (Gain) loss on sale of assets—net 681 (6 ) — — 675 Operating income (loss) 40,963 (24,427 ) 53 — 16,589 Interest expense—net 1,662 (1,131 ) (16,974 ) — (16,443 ) Equity in earnings (loss) of subsidiaries (22,610 ) — 15,082 7,528 — Equity in earnings of joint ventures 19 — — — 19 Other expense (1,158 ) (760 ) — — (1,918 ) Income (loss) before income taxes 18,876 (26,318 ) (1,839 ) 7,528 (1,753 ) Income tax (provision) benefit — (86 ) 645 — 559 Net income (loss) $ 18,876 $ (26,404 ) $ (1,194 ) $ 7,528 $ (1,194 ) Comprehensive income (loss) $ 18,876 $ (25,825 ) $ (615 ) $ 6,949 $ (615 ) GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2017 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals OPERATING ACTIVITIES: Net cash flows provided by (used in) operating activities of continuing operations $ 35,681 $ 4,438 $ (17,142 ) — $ 22,977 Net cash flows used in operating activities of discontinued operations (20,900 ) — — — (20,900 ) Cash provided by (used in) operating activities 14,781 4,438 (17,142 ) — 2,077 INVESTING ACTIVITIES: Purchases of property and equipment (57,023 ) 7,646 — — (49,377 ) Proceeds from dispositions of property and equipment 7,722 1,476 — — 9,198 Changes in restricted cash 7,035 — — — 7,035 Net change in accounts with affiliates 12,071 — (94,140 ) 82,069 — Transfer to parent — — 81,000 (81,000 ) — Cash provided by (used in) investing activities (30,195 ) 9,122 (13,140 ) 1,069 (33,144 ) FINANCING ACTIVITIES: Proceeds from issuance of 8% senior notes — — 325,000 — 325,000 Redemption of 7 3/8% senior notes — — (275,000 ) — (275,000 ) 7 3/8% senior notes tender premium — — (744 ) — (744 ) Deferred financing fees — — (4,522 ) — (4,522 ) Repayments of long term note payable — — (855 ) — (855 ) Proceeds from equipment debt 1,241 — — — 1,241 Repayments of equipment debt (1,171 ) — — — (1,171 ) Net change in accounts with affiliates 93,109 (11,040 ) — (82,069 ) — Transfer to parent (81,000 ) — — 81,000 — Taxes paid on settlement of vested share awards — — (328 ) — (328 ) Exercise of options and purchases from employee stock plans — — 867 — 867 Borrowings under revolving loans — — 89,425 — 89,425 Repayments of revolving loans — — (103,536 ) — (103,536 ) Cash provided by (used in) financing activities 12,179 (11,040 ) 30,307 (1,069 ) 30,377 Effect of foreign currency exchange rates on cash and cash equivalents — (8 ) — — (8 ) Net increase (decrease) in cash and cash equivalents (3,235 ) 2,512 25 — (698 ) Cash and cash equivalents at beginning of period 10,414 751 2 — 11,167 Cash and cash equivalents at end of period $ 7,179 $ 3,263 $ 27 $ — $ 10,469 GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2016 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals OPERATING ACTIVITIES: Cash provided by (used in) operating activities $ 45,057 $ (11,911 ) $ (20,168 ) $ — $ 12,978 INVESTING ACTIVITIES: Purchases of property and equipment (58,821 ) (21 ) — — (58,842 ) Proceeds from dispositions of property and equipment 10,289 166 — — 10,455 Net change in accounts with affiliates (7,027 ) — — 7,027 — Cash provided by (used in) investing activities (55,559 ) 145 — 7,027 (48,387 ) FINANCING ACTIVITIES: Deferred financing fees — — (332 ) — (332 ) Repayments of long term note payable — — (803 ) — (803 ) Repayments of term loan facility — — (3,750 ) — (3,750 ) Repayment of equipment debt (221 ) (843 ) — — (1,064 ) Net change in accounts with affiliates 34,471 11,246 (38,690 ) (7,027 ) — Transfer to parent (23,000 ) — 23,000 — — Exercise of options and purchases from employee stock plans — — 905 — 905 Taxes paid on settlement of vested share awards — — (162 ) — (162 ) Borrowings under revolving loans — — 133,000 — 133,000 Repayments of revolving loans — — (93,000 ) — (93,000 ) Cash provided by (used in) financing activities 11,250 10,403 20,168 (7,027 ) 34,794 Effect of foreign currency exchange rates on cash and cash equivalents — 26 — — 26 Net increase (decrease) in cash and cash equivalents 748 (1,337 ) — — (589 ) Cash and cash equivalents at beginning of period 11,698 2,484 2 — 14,184 Cash and cash equivalents at end of period $ 12,446 $ 1,147 $ 2 $ — $ 13,595

Basis Of Presentation (Policies

Basis Of Presentation (Policies)	9 Months Ended
	Sep. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update No. 2017-04 (“ASU 2017-04”), Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The Company does not anticipate that the adoption of ASU 2017-04 will have a material effect on the Company’s consolidated financial statements. In November 2016, the FASB issued Accounting Standard Update No. 2016-18 (“ASU 2016-18”), Statement of Cashflows (Topic 230): Restricted Cash The Company does not anticipate that the adoption of ASU 2016-18 will have a material effect on the Company’s consolidated financial statements. In August 2016, the FASB issued Accounting Standard Update No. 2016-15 (“ASU 2016-15”), Classification of Certain Cash Receipts and Cash Payments, In February 2016, the FASB issued Accounting Standard Update No. 2016-02 (“ASU 2016-02”), Leases (Topic 842) In May 2014, the FASB issued Accounting Standard Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) Accounting Standard Updates related to Accounting Standards Codification Topic 606 (collectively, “ASC 606”),

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Computations For Basic And Diluted Earnings (Loss) Per Share	The computations for basic and diluted earnings (loss) per share are as follows: Three Months Ended Nine Months Ended (shares in thousands) September 30, September 30, 2017 2016 2017 2016 Income (loss) from continuing operations $ (4,945 ) $ 4,560 $ (9,730 ) $ (1,194 ) Loss from discontinued operations, net of income taxes — — (12,697 ) — Net income (loss) (4,945 ) 4,560 (22,427 ) (1,194 ) Weighted-average common shares outstanding — basic 61,462 60,811 61,290 60,676 Effect of stock options and restricted stock units — 715 — — Weighted-average common shares outstanding — diluted 61,462 61,526 61,290 60,676 Earnings (loss) per share from continuing operations — basic $ (0.08 ) $ 0.08 $ (0.16 ) $ (0.02 ) Earnings (loss) per share from continuing operations — diluted $ (0.08 ) $ 0.08 $ (0.16 ) $ (0.02 )

Accounts Receivable And Contr25

Accounts Receivable And Contracts In Progress (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule Of Accounts Receivable	Accounts receivable at September 30, 2017 and December 31, 2016 are as follows: September 30, December 31, 2017 2016 Completed contracts $ 10,206 $ 18,727 Contracts in progress 54,587 53,137 Retainage 19,785 21,399 84,578 93,263 Allowance for doubtful accounts (767 ) (747 ) Total accounts receivable—net $ 83,811 $ 92,516 Current portion of accounts receivable—net $ 79,336 $ 88,091 Long-term accounts receivable and retainage 4,475 4,425 Total accounts receivable—net $ 83,811 $ 92,516
Components Of Contracts In Progress	The components of contracts in progress at September 30, 2017 and December 31, 2016 are as follows: September 30, December 31, 2017 2016 Costs and earnings in excess of billings: Costs and earnings for contracts in progress $ 495,877 $ 587,371 Amounts billed (432,544 ) (511,548 ) Costs and earnings in excess of billings for contracts in progress 63,333 75,823 Costs and earnings in excess of billings for completed contracts 19,309 19,189 Total contract revenues in excess of billings $ 82,642 $ 95,012 Billings in excess of costs and earnings: Amounts billed $ (347,656 ) $ (268,754 ) Costs and earnings for contracts in progress 343,010 263,613 Total billings in excess of contract revenues $ (4,646 ) $ (5,141 )

Accrued Expenses (Tables)

Accrued Expenses (Tables)	9 Months Ended
	Sep. 30, 2017
Payables And Accruals [Abstract]
Accrued Expenses	Accrued expenses at September 30, 2017 and December 31, 2016 are as follows: September 30, December 31, 2017 2016 Insurance $ 18,601 $ 18,114 Interest 10,071 8,660 Payroll and employee benefits 8,330 10,028 Accumulated deficit in joint ventures 3,012 17,016 Percentage of completion adjustment 2,546 3,322 Income and other taxes 1,727 3,208 Other 7,709 8,695 Total accrued expenses $ 51,996 $ 69,043

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule Of Fair Values Of Financial Instruments And Nonfinancial Assets And Liabilities Measured At The Reporting Date	The fair values of these financial instruments are summarized as follows: Fair Value Measurements at Reporting Date Using Description At September 30, 2017 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fuel hedge contracts $ 929 $ — 929 $ — Fair Value Measurements at Reporting Date Using Description At December 31, 2016 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fuel hedge contracts $ 2,293 $ — $ 2,293 $ —
Schedule Of Fair Value Of Fuel Hedge Contracts Balance Sheet Location	The fair value of the fuel hedge contracts outstanding as of September 30, 2017 and December 31, 2016 is as follows: Fair Value at September 30, December 31, Balance Sheet Location 2017 2016 Asset derivatives: Derivatives designated as hedging instruments Fuel hedge contracts Prepaid expenses and other current assets 929 $ 546 Derivatives not designated as hedging instruments Fuel hedge contracts Prepaid expenses and other current assets — 1,747 Total asset derivatives $ 929 $ 2,293
Changes In Components Of Accumulated Other Comprehensive Income	Changes in the components of the accumulated balances of other comprehensive income are as follows: Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Cumulative translation adjustments—net of tax $ (2 ) $ 39 $ (24 ) $ 596 Derivatives: Reclassification of derivative losses to earnings—net of tax (35 ) 46 160 46 Change in fair value of derivatives—net of tax 1,719 (63 ) 72 (63 ) Net unrealized gain (loss) on derivatives—net of tax 1,684 (17 ) 232 (17 ) Total other comprehensive income $ 1,682 $ 22 $ 208 $ 579
Adjustments Reclassified From Accumulated Balances Other Comprehensive Income (Loss) To Earnings	Adjustments reclassified from accumulated balances of other comprehensive income (loss) to earnings are as follows: Three Months Ended Nine Months Ended September 30, September 30, Statement of Operations Location 2017 2016 2017 2016 Derivatives: Fuel Costs of contract revenues $ (59 ) $ 76 $ 264 $ 76 Income tax (provision) benefit (24 ) 30 104 30 $ (35 ) $ 46 $ 160 $ 46

Restructuring charges (Tables)

Restructuring charges (Tables)	9 Months Ended
	Sep. 30, 2017
Restructuring And Related Activities [Abstract]
Schedule of Restructuring Charges	Restructuring charges currently recognized for the above actions are summarized as follows: Nine Months Ended September 30, 2017 Operating overhead $ 316 General and administrative expenses 1,306 Total Dredging 1,622 Operating overhead $ - General and administrative expenses 415 Total Environmental & Infrastructure 415 Operating overhead $ 316 General and administrative expenses 1,721 Total Consolidated 2,037

Business Combinations And Dis29

Business Combinations And Dispositions (Tables)	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Schedule Of Discontinued Operations	The Company estimated its exposure to a surety bond claim, including associated expenses, to be $20,900 and has recorded this amount in discontinued operations during the nine months ended September 30, 2017 as follows Nine Months Ended September 30, 2017 Revenue $ — Loss before income taxes from discontinued operations $ (20,900 ) Income tax benefit 8,203 Loss from discontinued operations, net of income taxes $ (12,697 )

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Reporting By Segment	Three Months Ended Nine Months Ended September 30, September 30, 2017 2016 2017 2016 Dredging Contract revenues $ 133,862 $ 154,448 $ 439,423 $ 453,122 Operating income 2,725 5,553 13,313 26,762 Environmental & infrastructure Contract revenues $ 29,667 $ 44,565 $ 73,602 $ 103,437 Operating income (loss) (3,727 ) 7,307 (6,601 ) (10,173 ) Intersegment revenues $ (212 ) $ (144 ) $ (2,263 ) $ (2,379 ) Total Contract revenues $ 163,317 $ 198,869 $ 510,762 $ 554,180 Operating income (loss) (1,002 ) 12,860 6,712 16,589

Subsidiary Guarantors (Tables)

Subsidiary Guarantors (Tables)	9 Months Ended
	Sep. 30, 2017
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Condensed Consolidating of Balance Sheet	GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET AS OF SEPTEMBER 30, 2017 (In thousands) ASSETS Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals CURRENT ASSETS: Cash and cash equivalents $ 7,179 $ 3,263 $ 27 $ — $ 10,469 Accounts receivable — net 76,215 4,204 — (1,083 ) 79,336 Contract revenues in excess of billings 82,355 287 — — 82,642 Inventories 35,540 - — — 35,540 Prepaid expenses and other current assets 45,459 2,513 12 — 47,984 Total current assets 246,748 10,267 39 (1,083 ) 255,971 PROPERTY AND EQUIPMENT—Net 413,504 108 — — 413,612 GOODWILL AND OTHER INTANGIBLE ASSETS—Net 84,270 361 — — 84,631 INVENTORIES — Noncurrent 57,597 — — — 57,597 INVESTMENTS IN JOINT VENTURES 7,344 — — — 7,344 ASSETS HELD FOR SALE—Noncurrent 8,436 133 — — 8,569 RECEIVABLES FROM AFFILIATES 50,380 19,697 176,606 (246,683 ) — INVESTMENTS IN SUBSIDIARIES — — 543,529 (543,529 ) — OTHER 8,706 1 5,260 — 13,967 TOTAL $ 876,985 $ 30,567 $ 725,434 $ (791,295 ) $ 841,691 LIABILITIES AND EQUITY CURRENT LIABILITIES: Accounts payable $ 68,025 $ 288 $ — $ (1,083 ) $ 67,230 Accrued expenses 37,655 4,286 10,055 — 51,996 Billings in excess of contract revenues 4,646 — — — 4,646 Current portion of long term debt 1,624 — 1,195 — 2,819 Total current liabilities 111,950 4,574 11,250 (1,083 ) 126,691 8% SENIOR NOTES — — 320,834 — 320,834 REVOLVING CREDIT FACILITY — — 90,000 — 90,000 NOTES PAYABLE — — 12,392 — 12,392 DEFERRED INCOME TAXES (565 ) — 55,056 — 54,491 PAYABLES TO AFFILIATES 177,925 61,758 7,000 (246,683 ) — INVESTMENTS IN SUBSIDIARIES 31,167 — — (31,167 ) — OTHER 8,381 — 178 — 8,559 Total liabilities 328,858 66,332 496,710 (278,933 ) 612,967 TOTAL EQUITY 548,127 (35,765 ) 228,724 (512,362 ) 228,724 TOTAL $ 876,985 $ 30,567 $ 725,434 $ (791,295 ) $ 841,691 GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING BALANCE SHEET AS OF DECEMBER 31, 2016 (In thousands) ASSETS Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals CURRENT ASSETS: Cash and cash equivalents $ 10,414 $ 751 $ 2 $ — $ 11,167 Accounts receivable — net 75,412 14,242 — (1,563 ) 88,091 Contract revenues in excess of billings 91,478 3,534 — — 95,012 Inventories 37,137 — — — 37,137 Prepaid expenses and other current assets 73,131 2,688 — — 75,819 Total current assets 287,572 21,215 2 (1,563 ) 307,226 PROPERTY AND EQUIPMENT—Net 407,516 5,492 — — 413,008 GOODWILL AND OTHER INTANGIBLE ASSETS—Net 84,643 432 — — 85,075 INVENTORIES — Noncurrent 52,602 — — — 52,602 INVESTMENTS IN JOINT VENTURES 4,685 49 — — 4,734 ASSETS HELD FOR SALE—Noncurrent 8,390 909 — — 9,299 RECEIVABLES FROM AFFILIATES 58,284 16,807 82,340 (157,431 ) — INVESTMENTS IN SUBSIDIARIES — — 636,216 (636,216 ) — OTHER 14,692 1 6,951 — 21,644 TOTAL $ 918,384 $ 44,905 $ 725,509 $ (795,210 ) $ 893,588 LIABILITIES AND EQUITY CURRENT LIABILITIES: Accounts payable $ 101,795 $ 2,879 $ 17 $ (1,506 ) $ 103,185 Accrued expenses 55,940 3,222 9,881 — 69,043 Billings in excess of contract revenues 4,699 499 — (57 ) 5,141 Current portion of long term debt 305 1,015 1,145 — 2,465 Total current liabilities 162,739 7,615 11,043 (1,563 ) 179,834 7 3/8% SENIOR NOTES — — 272,998 — 272,998 REVOLVING CREDIT FACILITY — — 104,111 — 104,111 NOTE PAYABLE — — 13,293 — 13,293 DEFERRED INCOME TAXES (1,833 ) — 70,282 — 68,449 PAYABLES TO AFFILIATES 80,769 70,921 5,741 (157,431 ) — INVESTMENTS IN SUBSIDIARIES 32,000 — — (32,000 ) — OTHER 5,925 937 151 — 7,013 Total liabilities 279,600 79,473 477,619 (190,994 ) 645,698 TOTAL EQUITY 638,784 (34,568 ) 247,890 (604,216 ) 247,890 TOTAL $ 918,384 $ 44,905 $ 725,509 $ (795,210 ) $ 893,588
Condensed Consolidating Operations And Comprehensive Income (Loss)	GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2017 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 163,056 $ 836 $ — $ (575 ) $ 163,317 Costs of contract revenues (145,614 ) (1,583 ) — 575 (146,622 ) Gross profit 17,442 (747 ) — — 16,695 OPERATING EXPENSES: General and administrative expenses 17,647 (125 ) — — 17,522 (Gain) loss on sale of assets—net (48 ) 223 — — 175 Operating income (157 ) (845 ) — — (1,002 ) Interest expense—net 414 (323 ) (6,508 ) — (6,417 ) Equity in loss of subsidiaries (253 ) — (1,151 ) 1,404 — Equity in loss of joint ventures 26 — — — 26 Other expense (130 ) (136 ) — — (266 ) Income (loss) before income taxes (100 ) (1,304 ) (7,659 ) 1,404 (7,659 ) Income tax benefit — — 2,714 — 2,714 Net income (loss) $ (100 ) $ (1,304 ) $ (4,945 ) $ 1,404 $ (4,945 ) Comprehensive income (loss) $ 1,584 $ (1,306 ) $ (3,263 ) $ (278 ) $ (3,263 ) GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2016 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 186,765 $ 12,000 $ — $ 104 $ 198,869 Costs of contract revenues (163,397 ) (15,323 ) — (104 ) (178,824 ) Gross profit 23,368 (3,323 ) — — 20,045 OPERATING EXPENSES: General and administrative expenses 4,047 3,138 2 — 7,187 Gain on sale of assets—net — (2 ) — — (2 ) Operating income (loss) 19,321 (6,459 ) (2 ) — 12,860 Interest expense—net 1,294 (398 ) (5,715 ) — (4,819 ) Equity in earnings (loss) of subsidiaries (5,829 ) — 13,041 (7,212 ) — Equity in earnings of joint ventures 6 — — — 6 Other income (expense) (645 ) 8 — — (637 ) Income (loss) before income taxes 14,147 (6,849 ) 7,324 (7,212 ) 7,410 Income tax provision — (86 ) (2,764 ) — (2,850 ) Net income (loss) $ 14,147 $ (6,935 ) $ 4,560 $ (7,212 ) $ 4,560 Comprehensive income (loss) $ 14,147 $ (6,913 ) $ 4,582 $ (7,234 ) $ 4,582 GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE LOSS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2017 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 507,354 $ 5,113 $ — $ (1,705 ) $ 510,762 Costs of contract revenues (447,954 ) (5,862 ) — 1,705 (452,111 ) Gross profit 59,400 (749 ) — — 58,651 OPERATING EXPENSES: General and administrative expenses 50,973 611 — — 51,584 Loss on sale of assets—net 212 143 — — 355 Operating income (loss) 8,215 (1,503 ) — — 6,712 Interest expense—net 1,051 (981 ) (18,510 ) — (18,440 ) Equity in earnings of subsidiaries 788 — 4,984 (5,772 ) — Equity in loss of joint ventures (1,441 ) — — — (1,441 ) Loss on extinguishment of debt — — (2,330 ) — (2,330 ) Other income (expense) (593 ) 250 — — (343 ) Income (loss) from continuing operations before income taxes 8,020 (2,234 ) (15,856 ) (5,772 ) (15,842 ) Income tax (provision) benefit — (14 ) 6,126 — 6,112 Income (loss) from continuing operations 8,020 (2,248 ) (9,730 ) (5,772 ) (9,730 ) Loss from discontinued operations, net of income taxes (20,900 ) — (12,697 ) 20,900 (12,697 ) Net income (loss) $ (12,880 ) $ (2,248 ) $ (22,427 ) $ 15,128 $ (22,427 ) Comprehensive loss $ (12,648 ) $ (2,272 ) $ (22,219 ) $ 14,920 $ (22,219 ) GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2016 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals Contract revenues $ 519,093 $ 36,628 $ — $ (1,541 ) $ 554,180 Costs of contract revenues (440,487 ) (50,943 ) — 1,541 (489,889 ) Gross profit 78,606 (14,315 ) — — 64,291 OPERATING EXPENSES: General and administrative expenses 36,962 10,118 (53 ) — 47,027 (Gain) loss on sale of assets—net 681 (6 ) — — 675 Operating income (loss) 40,963 (24,427 ) 53 — 16,589 Interest expense—net 1,662 (1,131 ) (16,974 ) — (16,443 ) Equity in earnings (loss) of subsidiaries (22,610 ) — 15,082 7,528 — Equity in earnings of joint ventures 19 — — — 19 Other expense (1,158 ) (760 ) — — (1,918 ) Income (loss) before income taxes 18,876 (26,318 ) (1,839 ) 7,528 (1,753 ) Income tax (provision) benefit — (86 ) 645 — 559 Net income (loss) $ 18,876 $ (26,404 ) $ (1,194 ) $ 7,528 $ (1,194 ) Comprehensive income (loss) $ 18,876 $ (25,825 ) $ (615 ) $ 6,949 $ (615 )
Condensed Consolidating Statement of Cash Flows	GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2017 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals OPERATING ACTIVITIES: Net cash flows provided by (used in) operating activities of continuing operations $ 35,681 $ 4,438 $ (17,142 ) — $ 22,977 Net cash flows used in operating activities of discontinued operations (20,900 ) — — — (20,900 ) Cash provided by (used in) operating activities 14,781 4,438 (17,142 ) — 2,077 INVESTING ACTIVITIES: Purchases of property and equipment (57,023 ) 7,646 — — (49,377 ) Proceeds from dispositions of property and equipment 7,722 1,476 — — 9,198 Changes in restricted cash 7,035 — — — 7,035 Net change in accounts with affiliates 12,071 — (94,140 ) 82,069 — Transfer to parent — — 81,000 (81,000 ) — Cash provided by (used in) investing activities (30,195 ) 9,122 (13,140 ) 1,069 (33,144 ) FINANCING ACTIVITIES: Proceeds from issuance of 8% senior notes — — 325,000 — 325,000 Redemption of 7 3/8% senior notes — — (275,000 ) — (275,000 ) 7 3/8% senior notes tender premium — — (744 ) — (744 ) Deferred financing fees — — (4,522 ) — (4,522 ) Repayments of long term note payable — — (855 ) — (855 ) Proceeds from equipment debt 1,241 — — — 1,241 Repayments of equipment debt (1,171 ) — — — (1,171 ) Net change in accounts with affiliates 93,109 (11,040 ) — (82,069 ) — Transfer to parent (81,000 ) — — 81,000 — Taxes paid on settlement of vested share awards — — (328 ) — (328 ) Exercise of options and purchases from employee stock plans — — 867 — 867 Borrowings under revolving loans — — 89,425 — 89,425 Repayments of revolving loans — — (103,536 ) — (103,536 ) Cash provided by (used in) financing activities 12,179 (11,040 ) 30,307 (1,069 ) 30,377 Effect of foreign currency exchange rates on cash and cash equivalents — (8 ) — — (8 ) Net increase (decrease) in cash and cash equivalents (3,235 ) 2,512 25 — (698 ) Cash and cash equivalents at beginning of period 10,414 751 2 — 11,167 Cash and cash equivalents at end of period $ 7,179 $ 3,263 $ 27 $ — $ 10,469 GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2016 (In thousands) Subsidiary Guarantors Non-Guarantor Subsidiaries GLDD Corporation Eliminations Consolidated Totals OPERATING ACTIVITIES: Cash provided by (used in) operating activities $ 45,057 $ (11,911 ) $ (20,168 ) $ — $ 12,978 INVESTING ACTIVITIES: Purchases of property and equipment (58,821 ) (21 ) — — (58,842 ) Proceeds from dispositions of property and equipment 10,289 166 — — 10,455 Net change in accounts with affiliates (7,027 ) — — 7,027 — Cash provided by (used in) investing activities (55,559 ) 145 — 7,027 (48,387 ) FINANCING ACTIVITIES: Deferred financing fees — — (332 ) — (332 ) Repayments of long term note payable — — (803 ) — (803 ) Repayments of term loan facility — — (3,750 ) — (3,750 ) Repayment of equipment debt (221 ) (843 ) — — (1,064 ) Net change in accounts with affiliates 34,471 11,246 (38,690 ) (7,027 ) — Transfer to parent (23,000 ) — 23,000 — — Exercise of options and purchases from employee stock plans — — 905 — 905 Taxes paid on settlement of vested share awards — — (162 ) — (162 ) Borrowings under revolving loans — — 133,000 — 133,000 Repayments of revolving loans — — (93,000 ) — (93,000 ) Cash provided by (used in) financing activities 11,250 10,403 20,168 (7,027 ) 34,794 Effect of foreign currency exchange rates on cash and cash equivalents — 26 — — 26 Net increase (decrease) in cash and cash equivalents 748 (1,337 ) — — (589 ) Cash and cash equivalents at beginning of period 11,698 2,484 2 — 14,184 Cash and cash equivalents at end of period $ 12,446 $ 1,147 $ 2 $ — $ 13,595

Basis Of Presentation (Narrativ

Basis Of Presentation (Narrative) (Details)	9 Months Ended
	Sep. 30, 2017segment
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Average equipment-related costs of total costs of contract revenue	23.00%
Number of operating Segments	2
Number of reportable segments	2
Number of reportable segments with goodwill	2

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Shares excluded from computation of diluted earnings per share	1,288	1,594	1,399	1,603
Securities excluded from computation of earnings per share amount due to loss	611		646	576

Earnings Per Share - (Computati

Earnings Per Share - (Computations For Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ (4,945)	$ 4,560	$ (9,730)	$ (1,194)
Loss from discontinued operations, net of income taxes			(12,697)
Net income (loss)	$ (4,945)	$ 4,560	$ (22,427)	$ (1,194)
Weighted-average common shares outstanding — basic	61,462	60,811	61,290	60,676
Effect of stock options and restricted stock units		715
Weighted-average common shares outstanding — diluted	61,462	61,526	61,290	60,676
Earnings (loss) per share from continuing operations — basic	$ (0.08)	$ 0.08	$ (0.16)	$ (0.02)
Earnings (loss) per share from continuing operations — diluted	$ (0.08)	$ 0.08	$ (0.16)	$ (0.02)

Accounts Receivable And Contr35

Accounts Receivable And Contracts In Progress (Schedule Of Accounts Receivable) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Receivables [Abstract]
Completed contracts	$ 10,206	$ 18,727
Contracts in progress	54,587	53,137
Retainage	19,785	21,399
Accounts receivable, gross	84,578	93,263
Allowance for doubtful accounts	(767)	(747)
Total accounts receivable—net	83,811	92,516
Current portion of accounts receivable—net	79,336	88,091
Long-term accounts receivable and retainage	$ 4,475	$ 4,425

Accounts Receivable And Contr36

Accounts Receivable And Contracts In Progress (Components Of Contracts In Progress) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Costs and earnings in excess of billings for contracts in progress	$ 63,333	$ 75,823
Costs and earnings in excess of billings for completed contracts	19,309	19,189
Total contract revenues in excess of billings	82,642	95,012
Total billings in excess of contract revenues	(4,646)	(5,141)
Costs And Earnings In Excess Of Billings [Member]
Accounts Notes And Loans Receivable [Line Items]
Costs and earnings for contracts in progress	495,877	587,371
Amounts billed	(432,544)	(511,548)
Billings In Excess Of Costs And Earnings [Member]
Accounts Notes And Loans Receivable [Line Items]
Costs and earnings for contracts in progress	343,010	263,613
Amounts billed	$ (347,656)	$ (268,754)

Accounts Receivable And Contr37

Accounts Receivable And Contracts In Progress (Narrative) (Details) $ in Thousands	Sep. 30, 2017USD ($)
Receivables [Abstract]
Costs in excess of billings	$ 17,860

Accrued Expenses (Details)

Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Payables And Accruals [Abstract]
Insurance	$ 18,601	$ 18,114
Interest	10,071	8,660
Payroll and employee benefits	8,330	10,028
Accumulated deficit in joint ventures	3,012	17,016
Percentage of completion adjustment	2,546	3,322
Income and other taxes	1,727	3,208
Other	7,709	8,695
Total accrued expenses	$ 51,996	$ 69,043

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) - USD ($)	Dec. 30, 2016	May 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Revolving credit facility			$ 90,000,000
Letters of credit outstanding			33,750,000
Letter of credit remaining borrowing capacity			101,796,000
Long-term debt, current maturities			2,819,000	$ 2,465,000
Senior Notes [Member]
Debt Instrument [Line Items]
Face value of senior notes issued, percentage		100.00%
Net proceeds from issuance		$ 321,653,000
Vessels and Ancillary Equipment [Member]
Debt Instrument [Line Items]
Long-term debt, current maturities			2,820,000
Long-term debt, excluding current Maturities			$ 13,518,000
8.000% Senior Notes Due in 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 325,000,000
Debt instrument, interest rate, stated percentage		8.00%	8.00%	8.00%
Maturity date		May 15, 2022
7.375% Senior Notes Due In 2019 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 275,000,000
Debt instrument, interest rate, stated percentage		7.375%	7.375%	7.375%
Maturity date		Feb. 1, 2019
Redemption of notes		$ 282,638,000
Maximum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	1.10%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 250,000,000
Line of credit facility optional increase capacity	$ 100,000,000
Revolving credit facility, maturity date			Dec. 30, 2019
Revolving credit facility, description			The Credit Agreement matures on December 30, 2019.
Revolving Credit Facility [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Revolving Credit Facility [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.00%
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Unused fee percentage	0.375%
Revolving Credit Facility [Member] | Maximum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Revolving Credit Facility [Member] | Maximum [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.00%
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Unused fee percentage	0.25%
Revolving Credit Facility [Member] | Minimum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Revolving Credit Facility [Member] | Minimum [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 250,000,000
Swingline Loans [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	25,000,000
Prior Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Repayments of lines of credit	$ 199,000,000
Prior Revolving Credit Agreement [Member] | Maximum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Prior Revolving Credit Agreement [Member] | Maximum [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Prior Revolving Credit Agreement [Member] | Minimum [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.50%
Prior Revolving Credit Agreement [Member] | Minimum [Member] | LIBOR Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Prior Secured Term Loan Facility [Member]
Debt Instrument [Line Items]
Payment of secured term loan	$ 50,000,000
Term loan facility bear interest fixed rate	4.655%

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule Of Fair Values Of Financial Instruments And Nonfinancial Assets And Liabilities Measured At The Reporting Date) (Details) - Fuel Hedge Contracts [Member] - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value, Net Asset (Liability)	$ 929	$ 2,293
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value, Net Asset (Liability)	$ 929	$ 2,293

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) gal in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2017USD ($)	Sep. 30, 2017USD ($)$ / gal	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)$ / galgal	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Derivatives Fair Value [Line Items]
Derivative underlying hedge percent				80.00%
Derivative, Nonmonetary Notional Amount, Volume | gal				8.2
Fair value hedge assets		$ 929,000		$ 929,000		$ 2,293,000
Reclassification of derivative losses to earnings-net of tax		$ 35,000	$ (46,000)	$ (160,000)	$ (46,000)
8.000% Senior Notes Due in 2022 [Member]
Derivatives Fair Value [Line Items]
Debt instrument, face amount	$ 325,000,000
Stated interest rate	8.00%	8.00%		8.00%		8.00%
Maturity date	May 15, 2022
8.000% Senior Notes Due in 2022 [Member] | Fair Value, Inputs, Level 1 [Member]
Derivatives Fair Value [Line Items]
Fair value of debt		$ 337,188,000		$ 337,188,000
Minimum [Member]
Derivatives Fair Value [Line Items]
Fixed price range | $ / gal		1.53		1.53
Maximum [Member]
Derivatives Fair Value [Line Items]
Fixed price range | $ / gal		1.76		1.76

Fair Value Measurements (Sche42

Fair Value Measurements (Schedule Of Fair Value Of Fuel Hedge Contracts Balance Sheet Location) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives Fair Value [Line Items]
Asset derivatives	$ 929	$ 2,293
Prepaid Expenses and Other Current Assets [Member] | Derivatives Designated as Hedging Instruments [Member] | Fuel Hedge Contracts [Member]
Derivatives Fair Value [Line Items]
Asset derivatives	$ 929	546
Prepaid Expenses and Other Current Assets [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Fuel Hedge Contracts [Member]
Derivatives Fair Value [Line Items]
Asset derivatives		$ 1,747

Fair Value Measurements (Change

Fair Value Measurements (Changes In Components Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Cumulative translation adjustments—net of tax	[1]	$ (2)	$ 39	$ (24)	$ 596
Reclassification of derivative losses to earnings—net of tax		(35)	46	160	46
Change in fair value of derivatives—net of tax		1,719	(63)	72	(63)
Net unrealized gain (loss) on derivatives—net of tax	[2]	1,684	(17)	232	(17)
Other comprehensive income (loss)—net of tax		$ 1,682	$ 22	$ 208	$ 579
[1]	Net of income tax provision of $13 and $25 for the three months ended September 30, 2017 and 2016, respectively. Net of income tax (provision) benefit of $46 and $(395) for the nine months ended September 30, 2017 and 2016, respectively.
[2]	Net of income tax benefit of $1,098 and $11 for the three months ended September 30, 2017 and 2016, respectively. Net of income tax provision of $151 and $11 for the nine months ended September 30, 2017 and 2016, respectively.

Fair Value Measurements (Adjust

Fair Value Measurements (Adjustments Reclassified From Accumulated Balances Other Comprehensive Income (Loss) To Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative Instruments Gain Loss [Line Items]
Costs of contract revenues	$ 146,622	$ 178,824	$ 452,111	$ 489,889
Income tax (provision) benefit	2,714	(2,850)	6,112	559
Net income (loss)	4,945	(4,560)	22,427	1,194
Fuel Hedge Contracts [Member] | Accumulated Net Gain Loss From Designated Or Qualifying Cash Flow Hedges | Reclassification Out Of Accumulated Other Comprehensive Income
Derivative Instruments Gain Loss [Line Items]
Costs of contract revenues	(59)	76	264	76
Income tax (provision) benefit	(24)	30	104	30
Net income (loss)	$ (35)	$ 46	$ 160	$ 46

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands	May 11, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units				920
Share-based compensation expense		$ 756	$ 270	$ 2,514	$ 2,276
Employees And Directors [Member] | 2017 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant	3,300
Employees And Directors [Member] | 2007 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Underlying equity awards issued	1,700

Restructuring Charges (Narrativ

Restructuring Charges (Narrative) (Details) $ in Thousands	Sep. 30, 2017USD ($)
Minimum [Member]
Restructuring Cost And Reserve [Line Items]
Estimated restructuring charge	$ 42,000
Expected non-cash restructuring charge related to severance, asset retirements and closeout costs	39,000
Maximum [Member]
Restructuring Cost And Reserve [Line Items]
Estimated restructuring charge	47,000
Expected non-cash restructuring charge related to severance, asset retirements and closeout costs	$ 44,000

Restructuring Charges (Schedule

Restructuring Charges (Schedule of Restructuring Charges) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 2,037
Operating Overhead [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	316
General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,721
Dredging [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,622
Dredging [Member] | Operating Overhead [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	316
Dredging [Member] | General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,306
Environmental And Infrastructure [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	415
Environmental And Infrastructure [Member] | General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 415

Commitments And Contingencies (

Commitments And Contingencies (Narrative) (Details) - USD ($)	Feb. 28, 2017	Jan. 14, 2015	Sep. 30, 2017	May 31, 2017
Commitments And Contingencies [Line Items]
Outstanding performance bonds			$ 1,296,867,000
Revenue value remaining from outstanding performance bonds			456,005,000
Proceeds from Legal Settlements		$ 5,309,000
Surety Bond [Member]
Commitments And Contingencies [Line Items]
Aggregate demolition surety performance bond	$ 20,000,000
Letter of Credit [Member]
Commitments And Contingencies [Line Items]
Line of credit, borrowing capacity				$ 20,881,000
Minimum [Member]
Commitments And Contingencies [Line Items]
Bids bond range			$ 1,000,000
Warranty periods			1 year
Maximum [Member]
Commitments And Contingencies [Line Items]
Bids bond range			$ 10,000,000
Warranty periods			3 years
Environmental And Infrastructure Segment [Member]
Commitments And Contingencies [Line Items]
Outstanding performance bonds			$ 41,085,000

Investments (Details)

Investments (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Schedule Of Equity Method Investments [Line Items]
Prepaid expenses and other current assets	$ 47,984	$ 75,819
Accumulated deficit in joint ventures	$ 3,012	17,016
TerraSea Environmental Solutions [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership percentage	50.00%
Prepaid expenses and other current assets		24,696
Accumulated deficit in joint ventures		$ 17,016
Loss from joint venture	$ 1,458

Business Combinations And Dis50

Business Combinations And Dispositions (Narrative) (Details) - USD ($) $ in Thousands	Feb. 28, 2017	Nov. 04, 2014	Apr. 23, 2014	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2015
Business Acquisition [Line Items]
Estimated surety bond claim, including associated expenses					$ 20,900
Great Lakes Environmental & Infrastructure, LLC [Member]
Business Acquisition [Line Items]
Fair value of debt				$ 0
Maximum potential aggregate earnout payment		$ 11,400
Adjustment to fair value of debt				$ 8,940
Magnus Pacific Acquisition [Member]
Business Acquisition [Line Items]
Base purchase price		40,000
Payments for previous acquisition		$ 25,000
Magnus Pacific Acquisition [Member] | 5.75% Senior Notes Due In 2023 [Member]
Business Acquisition [Line Items]
Fair value of debt						$ 0
Surety Bond [Member]
Business Acquisition [Line Items]
Aggregate demolition surety performance bond	$ 20,000
NASDI, LLC and Yankee Environmental Services, LLC
Business Acquisition [Line Items]
Proceeds from divestiture of businesses			$ 5,309

Business Combinations And Dis51

Business Combinations And Dispositions - (Schedule Of Discontinued Operations) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Business Combinations [Abstract]
Loss before income taxes from discontinued operations	$ (20,900)
Income tax benefit	8,203
Loss from discontinued operations, net of income taxes	$ (12,697)

Segment Information (Narrative)

Segment Information (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)segment	Sep. 30, 2016USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
Contract revenues	$ 163,317	$ 198,869	$ 510,762	$ 554,180
Dredging Segment [Member] | Foreign [Member]
Segment Reporting Information [Line Items]
Contract revenues	$ 5,849	$ 21,139	$ 37,423	$ 34,331

Segment Information (Segment Re

Segment Information (Segment Reporting By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Contract revenues	$ 163,317	$ 198,869	$ 510,762	$ 554,180
Operating income (loss)	(1,002)	12,860	6,712	16,589
Dredging Segment [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	2,725	5,553	13,313	26,762
Environmental And Infrastructure Segment [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(3,727)	7,307	(6,601)	(10,173)
Operating Segment [Member] | Dredging Segment [Member]
Segment Reporting Information [Line Items]
Contract revenues	133,862	154,448	439,423	453,122
Operating Segment [Member] | Environmental And Infrastructure Segment [Member]
Segment Reporting Information [Line Items]
Contract revenues	29,667	44,565	73,602	103,437
Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Contract revenues	$ (212)	$ (144)	$ (2,263)	$ (2,379)

Subsidiary Guarantors (Narrativ

Subsidiary Guarantors (Narrative) (Details) - 8% SENIOR NOTES [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Condensed Financial Statements, Captions [Line Items]
SENIOR NOTES	$ 325,000
Debt instrument, interest rate, stated percentage	8.00%
Maturity date	May 15, 2022
Owned Domestic Subsidiaries Percent	100.00%

Subsidiary Guarantors (Condense

Subsidiary Guarantors (Condensed Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 10,469	$ 11,167	$ 13,595	$ 14,184
Accounts receivable—net	79,336	88,091
Contract revenues in excess of billings	82,642	95,012
Inventories	35,540	37,137
Prepaid expenses and other current assets	47,984	75,819
Total current assets	255,971	307,226
PROPERTY AND EQUIPMENT—Net	413,612	413,008
GOODWILL AND OTHER INTANGIBLE ASSETS—Net	84,631	85,075
INVENTORIES—Noncurrent	57,597	52,602
INVESTMENTS IN JOINT VENTURES	7,344	4,734
ASSETS HELD FOR SALE—Noncurrent	8,569	9,299
OTHER	13,967	21,644
TOTAL	841,691	893,588
LIABILITIES AND EQUITY
Accounts payable	67,230	103,185
Accrued expenses	51,996	69,043
Billings in excess of contract revenues	4,646	5,141
Current portion of long term debt	2,819	2,465
Total current liabilities	126,691	179,834
REVOLVING CREDIT FACILITY	90,000	104,111
NOTES PAYABLE	12,392	13,293
DEFERRED INCOME TAXES	54,491	68,449
OTHER	8,559	7,013
Total liabilities	612,967	645,698
TOTAL EQUITY	228,724	247,890	254,577	252,173
TOTAL	841,691	893,588
8% SENIOR NOTES [Member]
LIABILITIES AND EQUITY
SENIOR NOTES	320,834
7 3/8% SENIOR NOTES [Member]
LIABILITIES AND EQUITY
SENIOR NOTES		272,998
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
CURRENT ASSETS:
Cash and cash equivalents	7,179	10,414	12,446	11,698
Accounts receivable—net	76,215	75,412
Contract revenues in excess of billings	82,355	91,478
Inventories	35,540	37,137
Prepaid expenses and other current assets	45,459	73,131
Total current assets	246,748	287,572
PROPERTY AND EQUIPMENT—Net	413,504	407,516
GOODWILL AND OTHER INTANGIBLE ASSETS—Net	84,270	84,643
INVENTORIES—Noncurrent	57,597	52,602
INVESTMENTS IN JOINT VENTURES	7,344	4,685
ASSETS HELD FOR SALE—Noncurrent	8,436	8,390
RECEIVABLES FROM AFFILIATES	50,380	58,284
OTHER	8,706	14,692
TOTAL	876,985	918,384
LIABILITIES AND EQUITY
Accounts payable	68,025	101,795
Accrued expenses	37,655	55,940
Billings in excess of contract revenues	4,646	4,699
Current portion of long term debt	1,624	305
Total current liabilities	111,950	162,739
DEFERRED INCOME TAXES	565	1,833
PAYABLES TO AFFILIATES	177,925	80,769
INVESTMENTS IN SUBSIDIARIES	31,167	32,000
OTHER	8,381	5,925
Total liabilities	328,858	279,600
TOTAL EQUITY	548,127	638,784
TOTAL	876,985	918,384
Reportable Legal Entities [Member] | Non Guarantor Subsidiaries [Member]
CURRENT ASSETS:
Cash and cash equivalents	3,263	751	1,147	2,484
Accounts receivable—net	4,204	14,242
Contract revenues in excess of billings	287	3,534
Prepaid expenses and other current assets	2,513	2,688
Total current assets	10,267	21,215
PROPERTY AND EQUIPMENT—Net	108	5,492
GOODWILL AND OTHER INTANGIBLE ASSETS—Net	361	432
INVESTMENTS IN JOINT VENTURES		49
ASSETS HELD FOR SALE—Noncurrent	133	909
RECEIVABLES FROM AFFILIATES	19,697	16,807
OTHER	1	1
TOTAL	30,567	44,905
LIABILITIES AND EQUITY
Accounts payable	288	2,879
Accrued expenses	4,286	3,222
Billings in excess of contract revenues		499
Current portion of long term debt		1,015
Total current liabilities	4,574	7,615
PAYABLES TO AFFILIATES	61,758	70,921
OTHER		937
Total liabilities	66,332	79,473
TOTAL EQUITY	(35,765)	(34,568)
TOTAL	30,567	44,905
Reportable Legal Entities [Member] | GLDD Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	27	2	$ 2	$ 2
Prepaid expenses and other current assets	12
Total current assets	39	2
RECEIVABLES FROM AFFILIATES	176,606	82,340
INVESTMENTS IN SUBSIDIARIES	543,529	636,216
OTHER	5,260	6,951
TOTAL	725,434	725,509
LIABILITIES AND EQUITY
Accounts payable		17
Accrued expenses	10,055	9,881
Current portion of long term debt	1,195	1,145
Total current liabilities	11,250	11,043
REVOLVING CREDIT FACILITY	90,000	104,111
NOTES PAYABLE	12,392	13,293
DEFERRED INCOME TAXES	55,056	70,282
PAYABLES TO AFFILIATES	7,000	5,741
OTHER	178	151
Total liabilities	496,710	477,619
TOTAL EQUITY	228,724	247,890
TOTAL	725,434	725,509
Reportable Legal Entities [Member] | 8% SENIOR NOTES [Member] | GLDD Corporation [Member]
LIABILITIES AND EQUITY
SENIOR NOTES	320,834
Reportable Legal Entities [Member] | 7 3/8% SENIOR NOTES [Member] | GLDD Corporation [Member]
LIABILITIES AND EQUITY
SENIOR NOTES		272,998
Consolidation Eliminations [Member]
CURRENT ASSETS:
Accounts receivable—net	(1,083)	(1,563)
Total current assets	(1,083)	(1,563)
RECEIVABLES FROM AFFILIATES	(246,683)	(157,431)
INVESTMENTS IN SUBSIDIARIES	(543,529)	(636,216)
TOTAL	(791,295)	(795,210)
LIABILITIES AND EQUITY
Accounts payable	(1,083)	(1,506)
Billings in excess of contract revenues		(57)
Total current liabilities	(1,083)	(1,563)
PAYABLES TO AFFILIATES	(246,683)	(157,431)
INVESTMENTS IN SUBSIDIARIES	(31,167)	(32,000)
Total liabilities	(278,933)	(190,994)
TOTAL EQUITY	(512,362)	(604,216)
TOTAL	$ (791,295)	$ (795,210)

Subsidiary Guarantors (Conden56

Subsidiary Guarantors (Condensed Consolidated Statement Operations And Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Financial Statements, Captions [Line Items]
Contract revenues	$ 163,317	$ 198,869	$ 510,762	$ 554,180
Costs of contract revenues	(146,622)	(178,824)	(452,111)	(489,889)
Gross profit	16,695	20,045	58,651	64,291
General and administrative expenses	17,522	7,187	51,584	47,027
(Gain) loss on sale of assets—net	175	(2)	355	675
Operating income (loss)	(1,002)	12,860	6,712	16,589
Interest expense—net	(6,417)	(4,819)	(18,440)	(16,443)
Equity in earnings (loss) of joint ventures	26	6	(1,441)	19
Loss on extinguishment of debt			(2,330)
Other income (expense)	(266)	(637)	(343)	(1,918)
Income (loss) from continuing operations before income taxes	(7,659)	7,410	(15,842)	(1,753)
Income tax (provision) benefit	2,714	(2,850)	6,112	559
Income (loss) from continuing operations	(4,945)	4,560	(9,730)	(1,194)
Loss from discontinued operations, net of income taxes			(12,697)
Net income (loss)	(4,945)	4,560	(22,427)	(1,194)
Comprehensive income (loss)	(3,263)	4,582	(22,219)	(615)
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Contract revenues	163,056	186,765	507,354	519,093
Costs of contract revenues	(145,614)	(163,397)	(447,954)	(440,487)
Gross profit	17,442	23,368	59,400	78,606
General and administrative expenses	17,647	4,047	50,973	36,962
(Gain) loss on sale of assets—net	(48)		212	681
Operating income (loss)	(157)	19,321	8,215	40,963
Interest expense—net	414	1,294	1,051	1,662
Equity in earnings (loss) of subsidiaries	(253)	(5,829)	788	(22,610)
Equity in earnings (loss) of joint ventures	26	6	(1,441)	19
Other income (expense)	(130)	(645)	(593)	(1,158)
Income (loss) from continuing operations before income taxes	(100)	14,147	8,020	18,876
Income (loss) from continuing operations			8,020
Loss from discontinued operations, net of income taxes			(20,900)
Net income (loss)	(100)	14,147	(12,880)	18,876
Comprehensive income (loss)	1,584	14,147	(12,648)	18,876
Reportable Legal Entities [Member] | Non Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Contract revenues	836	12,000	5,113	36,628
Costs of contract revenues	(1,583)	(15,323)	(5,862)	(50,943)
Gross profit	(747)	(3,323)	(749)	(14,315)
General and administrative expenses	(125)	3,138	611	10,118
(Gain) loss on sale of assets—net	223	(2)	143	(6)
Operating income (loss)	(845)	(6,459)	(1,503)	(24,427)
Interest expense—net	(323)	(398)	(981)	(1,131)
Other income (expense)	(136)	8	250	(760)
Income (loss) from continuing operations before income taxes	(1,304)	(6,849)	(2,234)	(26,318)
Income tax (provision) benefit		(86)	(14)	(86)
Income (loss) from continuing operations			(2,248)
Net income (loss)	(1,304)	(6,935)	(2,248)	(26,404)
Comprehensive income (loss)	(1,306)	(6,913)	(2,272)	(25,825)
Reportable Legal Entities [Member] | GLDD Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
General and administrative expenses		2		(53)
Operating income (loss)		(2)		53
Interest expense—net	(6,508)	(5,715)	(18,510)	(16,974)
Equity in earnings (loss) of subsidiaries	(1,151)	13,041	4,984	15,082
Loss on extinguishment of debt			(2,330)
Income (loss) from continuing operations before income taxes	(7,659)	7,324	(15,856)	(1,839)
Income tax (provision) benefit	2,714	(2,764)	6,126	645
Income (loss) from continuing operations			(9,730)
Loss from discontinued operations, net of income taxes			(12,697)
Net income (loss)	(4,945)	4,560	(22,427)	(1,194)
Comprehensive income (loss)	(3,263)	4,582	(22,219)	(615)
Consolidation Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Contract revenues	(575)	104	(1,705)	(1,541)
Costs of contract revenues	575	(104)	1,705	1,541
Equity in earnings (loss) of subsidiaries	1,404	(7,212)	(5,772)	7,528
Income (loss) from continuing operations before income taxes	1,404	(7,212)	(5,772)	7,528
Income (loss) from continuing operations			(5,772)
Loss from discontinued operations, net of income taxes			20,900
Net income (loss)	1,404	(7,212)	15,128	7,528
Comprehensive income (loss)	$ (278)	$ (7,234)	$ 14,920	$ 6,949

Subsidiary Guarantors (Conden57

Subsidiary Guarantors (Condensed Consolidated of Cash Flow) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
OPERATING ACTIVITIES:
Net cash flows provided by (used in) operating activities of continuing operations	$ 22,977	$ 12,978
Net cash flows used in operating activities of discontinued operations	(20,900)
Cash provided by operating activities	2,077	12,978
INVESTING ACTIVITIES:
Purchases of property and equipment	(49,377)	(58,842)
Proceeds from dispositions of property and equipment	9,198	10,455
Changes in restricted cash	7,035
Cash used in investing activities	(33,144)	(48,387)
FINANCING ACTIVITIES:
Proceeds from issuance of 8% senior notes	325,000
Redemption of 7 3/8% senior notes	(275,000)
7 3/8% senior notes tender premium	(744)
Deferred financing fees	(4,522)	(332)
Repayments of long term note payable	(855)	(803)
Proceeds from equipment debt	1,241
Repayments of term loan facility		(3,750)
Repayments of equipment debt	(1,171)	(1,064)
Taxes paid on settlement of vested share awards	(328)	(162)
Exercise of options and purchases from employee stock plans	867	905
Borrowings under revolving loans	89,425	133,000
Repayments of revolving loans	(103,536)	(93,000)
Cash provided by financing activities	30,377	34,794
Effect of foreign currency exchange rates on cash and cash equivalents	(8)	26
Net decrease in cash and cash equivalents	(698)	(589)
Cash and cash equivalents at beginning of period	11,167	14,184
Cash and cash equivalents at end of period	10,469	13,595
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
OPERATING ACTIVITIES:
Net cash flows provided by (used in) operating activities of continuing operations	35,681
Net cash flows used in operating activities of discontinued operations	(20,900)
Cash provided by operating activities	14,781	45,057
INVESTING ACTIVITIES:
Purchases of property and equipment	(57,023)	(58,821)
Proceeds from dispositions of property and equipment	7,722	10,289
Changes in restricted cash	7,035
Net change in accounts with affiliates	12,071	(7,027)
Cash used in investing activities	(30,195)	(55,559)
FINANCING ACTIVITIES:
Proceeds from equipment debt	1,241
Repayments of equipment debt	(1,171)	(221)
Net change in accounts with affiliates	93,109	34,471
Transfer to parent	(81,000)	(23,000)
Cash provided by financing activities	12,179	11,250
Net decrease in cash and cash equivalents	(3,235)	748
Cash and cash equivalents at beginning of period	10,414	11,698
Cash and cash equivalents at end of period	7,179	12,446
Reportable Legal Entities [Member] | Non Guarantor Subsidiaries [Member]
OPERATING ACTIVITIES:
Net cash flows provided by (used in) operating activities of continuing operations	4,438
Cash provided by operating activities	4,438	(11,911)
INVESTING ACTIVITIES:
Purchases of property and equipment	7,646	(21)
Proceeds from dispositions of property and equipment	1,476	166
Cash used in investing activities	9,122	145
FINANCING ACTIVITIES:
Repayments of equipment debt		(843)
Net change in accounts with affiliates	(11,040)	11,246
Cash provided by financing activities	(11,040)	10,403
Effect of foreign currency exchange rates on cash and cash equivalents	(8)	26
Net decrease in cash and cash equivalents	2,512	(1,337)
Cash and cash equivalents at beginning of period	751	2,484
Cash and cash equivalents at end of period	3,263	1,147
Reportable Legal Entities [Member] | GLDD Corporation [Member]
OPERATING ACTIVITIES:
Net cash flows provided by (used in) operating activities of continuing operations	(17,142)
Cash provided by operating activities	(17,142)	(20,168)
INVESTING ACTIVITIES:
Net change in accounts with affiliates	(94,140)
Transfer to parent	81,000
Cash used in investing activities	(13,140)
FINANCING ACTIVITIES:
Proceeds from issuance of 8% senior notes	325,000
Redemption of 7 3/8% senior notes	(275,000)
7 3/8% senior notes tender premium	(744)
Deferred financing fees	(4,522)	(332)
Repayments of long term note payable	(855)	(803)
Repayments of term loan facility		(3,750)
Net change in accounts with affiliates		(38,690)
Transfer to parent		23,000
Taxes paid on settlement of vested share awards	(328)	(162)
Exercise of options and purchases from employee stock plans	867	905
Borrowings under revolving loans	89,425	133,000
Repayments of revolving loans	(103,536)	(93,000)
Cash provided by financing activities	30,307	20,168
Net decrease in cash and cash equivalents	25
Cash and cash equivalents at beginning of period	2	2
Cash and cash equivalents at end of period	27	2
Consolidation Eliminations [Member]
INVESTING ACTIVITIES:
Net change in accounts with affiliates	82,069	7,027
Transfer to parent	(81,000)
Cash used in investing activities	1,069	7,027
FINANCING ACTIVITIES:
Net change in accounts with affiliates	(82,069)	(7,027)
Transfer to parent	81,000
Cash provided by financing activities	$ (1,069)	$ (7,027)