Subsidiary Guarantors (Tables)

12 Months Ended

Dec. 31, 2016

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 DECEMBER 31, 2016
(In thousands)

ASSETS	Subsidiary Guarantors			Non-Guarantor Subsidiaries		GLDD Corporation		Eliminations			Consolidated Totals
CURRENT ASSETS:
Cash and cash equivalents	$	11,037		$	128	$	2	$	—		$	11,167
Accounts receivable — net		86,690			1,401		—		—			88,091
Contract revenues in excess of billings		94,731			281		—		—			95,012
Inventories		37,137			—		—		—			37,137
Prepaid expenses		12,407			—		—		—			12,407
Other current assets		63,089			323		—		—			63,412
Total current assets		305,091			2,133		2		—			307,226

PROPERTY AND EQUIPMENT—Net		413,002			6		—		—			413,008
GOODWILL		83,576			—		—		—			83,576
OTHER INTANGIBLE ASSETS—Net		1,499			—		—		—			1,499
INVENTORIES — Noncurrent		52,602			—		—		—			52,602
INVESTMENTS IN JOINT VENTURES		4,734			—		—		—			4,734
ASSETS HELD FOR SALE— Noncurrent		9,299			—		—		—			9,299
RECEIVABLES FROM AFFILIATES		11,524			6,883		82,340		(100,747	)		—
INVESTMENTS IN SUBSIDIARIES		3,695			—		636,216		(639,911	)		—
OTHER		14,692			1		6,951		—			21,644
TOTAL	$	899,714		$	9,023	$	725,509	$	(740,658	)	$	893,588

LIABILITIES AND EQUITY
CURRENT LIABILITIES:
Accounts payable	$	102,654		$	514	$	17	$	—		$	103,185
Accrued expenses		58,192			970		9,881		—			69,043
Billings in excess of contract revenues		4,963			178		—		—			5,141
Current portion of long term debt		1,320			—		1,145		—			2,465
Total current liabilities		167,129			1,662		11,043		—			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		88,573			6,433		5,741		(100,747	)		—
OTHER		6,862			—		151		—			7,013
Total liabilities		260,731			8,095		477,619		(100,747	)		645,698

TOTAL EQUITY		638,983			928		247,890		(639,911	)		247,890
TOTAL	$	899,714		$	9,023	$	725,509	$	(740,658	)	$	893,588

GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING BALANCE SHEET
AS OF DECEMBER 31, 2015
(In thousands)

ASSETS	Subsidiary Guarantors			Non-Guarantor Subsidiaries		GLDD Corporation		Eliminations			Consolidated Totals
CURRENT ASSETS:
Cash and cash equivalents	$	12,035		$	2,147	$	2	$	—		$	14,184
Accounts receivable — net		129,978			799		—		—			130,777
Contract revenues in excess of billings		79,477			1,718		—		—			81,195
Inventories		35,963			—		—		—			35,963
Prepaid expenses		7,924			—		—		—			7,924
Other current assets		58,995			218		477		—			59,690
Total current assets		324,372			4,882		479		—			329,733

PROPERTY AND EQUIPMENT—Net		430,192			18		—		—			430,210
GOODWILL		83,576			—		—		—			83,576
OTHER INTANGIBLE ASSETS—Net		2,428			—		—		—			2,428
INVENTORIES — Noncurrent		41,646			—		—		—			41,646
INVESTMENTS IN JOINT VENTURES		3,761			—		—		—			3,761
RECEIVABLES FROM AFFILIATES		18,326			6,009		70,738		(95,073	)		—
INVESTMENTS IN SUBSIDIARIES		3,706			—		621,984		(625,690	)		—
OTHER		6,702			3		65		—			6,770
TOTAL	$	914,709		$	10,912	$	693,266	$	(720,763	)	$	898,124

LIABILITIES AND EQUITY
CURRENT LIABILITIES:
Accounts payable	$	118,619		$	227	$	—	$	—		$	118,846
Accrued expenses		62,861			509		8,907		—			72,277
Billings in excess of contract revenues		6,964			97		—		—			7,061
Current portion of long term debt		1,424			—		6,082		—			7,506
Total current liabilities		189,868			833		14,989		—			205,690

7 3/8% SENIOR NOTES		—			—		271,998		—			271,998
REVOLVING CREDIT FACILITY		—			—		20,000		—			20,000
NOTE PAYABLE		323			—		53,469		—			53,792
DEFERRED INCOME TAXES		(783	)		—		74,789		—			74,006
PAYABLES TO AFFILIATES		85,859			3,505		5,709		(95,073	)		—
OTHER		20,326			—		139		—			20,465
Total liabilities		295,593			4,338		441,093		(95,073	)		645,951

TOTAL EQUITY		619,116			6,574		252,173		(625,690	)		252,173
TOTAL	$	914,709		$	10,912	$	693,266	$	(720,763	)	$	898,124

Schedule Of Condensed Consolidating Operations And Comprehensive Income

GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
FOR THE YEAR ENDED DECEMBER 31, 2016
(In thousands)

	Subsidiary Guarantors			Non-Guarantor Subsidiaries			GLDD Corporation			Eliminations			Consolidated Totals
Contract revenues	$	767,723		$	1,959		$	—		$	(2,097	)	$	767,585
Costs of contract revenues		(675,844	)		(7,450	)		—			2,097			(681,197	)
Gross profit		91,879			(5,491	)		—			—			86,388

OPERATING EXPENSES:
General and administrative expenses		65,578			4			(49	)		—			65,533
Loss on sale of assets—net		6,175			—			—			—			6,175
Operating income (loss)		20,126			(5,495	)		49			—			14,680

Interest income (expense)—net		488			—			(23,395	)		—			(22,907	)
Equity in earnings (loss) of subsidiaries		(10	)		—			10,313			(10,303	)		—
Equity in loss of joint ventures		(2,365	)		—			—			—			(2,365	)
Other expense		(3,369	)		(8	)		—			—			(3,377	)
Income (loss) before income taxes		14,870			(5,503	)		(13,033	)		(10,303	)		(13,969	)

Income tax (provision) benefit		1,079			(143	)		4,856			—			5,792

Net income (loss)	$	15,949		$	(5,646	)	$	(8,177	)	$	(10,303	)	$	(8,177	)

Comprehensive income (loss)	$	16,279		$	(5,138	)	$	(7,339	)	$	(11,141	)	$	(7,339	)

GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
FOR THE YEAR ENDED DECEMBER 31, 2015
(In thousands)

	Subsidiary Guarantors			Non-Guarantor Subsidiaries			GLDD Corporation			Eliminations			Consolidated Totals
Contract revenues	$	845,889		$	13,698		$	—		$	(2,709	)	$	856,878
Costs of contract revenues		(750,509	)		(13,155	)		—			2,709			(760,955	)
Gross profit		95,380			543			—			—			95,923

OPERATING EXPENSES:
General and administrative expenses		71,069			—			—			—			71,069
Impairment of goodwill		2,750			—			—			—			2,750
Gain on sale of assets—net		(855	)		—			—			—			(855	)
Operating income		22,416			543			—			—			22,959

Interest expense—net		(526	)		—			(23,839	)		—			(24,365	)
Equity in earnings of subsidiaries		8			—			16,282			(16,290	)		—
Equity in loss of joint ventures		(6,051	)		—			—			—			(6,051	)
Other expense		(1,222	)		(7	)		—			—			(1,229	)
Income (loss) before income taxes		14,625			536			(7,557	)		(16,290	)		(8,686	)

Income tax (provision) benefit		1,505			(376	)		1,368			—			2,497

Net income (loss)		16,130			160		$	(6,189	)	$	(16,290	)	$	(6,189	)

Comprehensive income (loss)	$	16,130		$	(1,089	)	$	(7,438	)	$	(15,041	)	$	(7,438	)

GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME
FOR THE YEAR ENDED DECEMBER 31, 2014
(In thousands)

	Subsidiary Guarantors			Non-Guarantor Subsidiaries			GLDD Corporation			Eliminations			Consolidated Totals
Contract revenues	$	799,579		$	26,282		$	—		$	(19,030	)	$	806,831
Costs of contract revenues		(707,474	)		(25,891	)		—			19,030			(714,335	)
Gross profit		92,105			391			—			—			92,496

OPERATING EXPENSES:
General and administrative expenses		67,905			6			—			—			67,911
Loss on sale of assets—net		732			—			—			—			732
Operating income		23,468			385			—			—			23,853

Interest income (expense)—net		61			(261	)		(19,767	)		—			(19,967	)
Equity in earnings of subsidiaries		20			—			10,373			(10,393	)		—
Equity in earnings of joint ventures		2,895			—			—			—			2,895
Gain on bargain purchase acquisition		2,197			—			—			—			2,197
Other income		203			7			—			—			210

Income (loss) before income taxes		28,844			131			(9,394	)		(10,393	)		9,188

Income tax (provision) benefit		(18,173	)		(409	)		30,112			—			11,530

Income (loss) from continuing operations		10,671			(278	)		20,718			(10,393	)		20,718
Loss from discontinued operations, net of income taxes		(10,423	)		(1,343	)		(10,423	)		11,766			(10,423	)
Net income (loss)		248			(1,621	)		10,295			1,373			10,295

Comprehensive income (loss)	$	49		$	(1,683	)	$	10,034		$	1,634		$	10,034

Condensed Cash Flow Statement

GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2016
(In thousands)

	Subsidiary Guarantors			Non-Guarantor Subsidiaries			GLDD Corporation			Eliminations			Consolidated Totals
OPERATING ACTIVITIES:
Cash provided by (used in) operating activities	$	61,518		$	(3,786	)	$	(19,062	)	$	—		$	38,670

INVESTING ACTIVITIES:
Purchases of property and equipment		(83,798	)		—			—			—			(83,798	)
Proceeds from dispositions of property and equipment		18,257			—			—			—			18,257
Changes in restricted cash		(7,035	)		—			—			—			(7,035	)
Net change in accounts with affiliates		—			—			(36,172	)		36,172			—
Transfer to parent		—			—			23,000			(23,000	)		—
Cash used in investing activities		(72,576	)		—			(13,172	)		13,172			(72,576	)

FINANCING ACTIVITIES:
Repayments of term loan facility		—			—			(44,582	)		—			(44,582	)
Deferred financing fees		—			—			(6,817	)		—			(6,817	)
Repayment of long term note payable		—			—			(1,079	)		—			(1,079	)
Taxes paid on settlement of vested share awards		—			—			(171	)		—			(171	)
Net change in accounts with affiliates		34,484			1,688			—			(36,172	)		—
Transfer to parent		(23,000	)		—			—			23,000			—
Repayments of equipment debt		(1,424	)		—			—			—			(1,424	)
Exercise of stock options and purchases from employee stock plans		—			—			905			—			905
Excess income tax benefit from share-based compensation		—			—			(133	)		—			(133	)
Borrowings under revolving loans		—			—			288,611			—			288,611
Repayments of revolving loans		—			—			(204,500	)		—			(204,500	)
Cash provided by financing activities		10,060			1,688			32,234			(13,172	)		30,810

Effect of foreign currency exchange rates on cash and cash equivalents		—			79			—			—			79

Net decrease in cash and cash equivalents		(998	)		(2,019	)		—			—			(3,017	)

Cash and cash equivalents at beginning of period		12,035			2,147			2			—			14,184

Cash and cash equivalents at end of period	$	11,037		$	128		$	2		$	—		$	11,167

GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2015
(In thousands)

	Subsidiary Guarantors			Non-Guarantor Subsidiaries			GLDD Corporation			Eliminations			Consolidated Totals
OPERATING ACTIVITIES:
Cash provided by (used in) operating activities		52,498			312			(23,688	)		—			29,122

INVESTING ACTIVITIES:
Purchases of property and equipment		(74,455	)		—			—			—			(74,455	)
Proceeds from dispositions of property and equipment		1,322			—			—			—			1,322
Net change in accounts with affiliates		(29,402	)		—			(12,222	)		41,624			—
Cash used in investing activities		(102,535	)		—			(12,222	)		41,624			(73,133	)

FINANCING ACTIVITIES:
Proceeds from term loan facility		—			—			2,640			—			2,640
Repayments of term loan facility		—			—			(5,000	)		—			(5,000	)
Deferred financing fees		—			—			(111	)		—			(111	)
Repayment of long term note payable		—			—			(443	)					(443	)
Taxes paid on settlement of vested share awards		—			—			(267	)		—			(267	)
Net change in accounts with affiliates		4,291			1,269			36,064			(41,624	)		—
Transfer from parent		17,258			—			(17,258	)		—			—
Proceeds from equipment debt		—			—			410			—			410
Repayments of equipment debt		(1,201	)		—			—			—			(1,201	)
Exercise of stock options and purchases from employee stock plans		—			—			1,365			—			1,365
Excess income tax benefit from share-based compensation		—			—			(57	)		—			(57	)
Purchase of treasury stock		—			—			(1,433	)		—			(1,433	)
Borrowings under revolving loans		—			—			179,500			—			179,500
Repayments of revolving loans		—			—			(159,500	)		—			(159,500	)
Cash provided by financing activities		20,348			1,269			35,910			(41,624	)		15,903

Effect of foreign currency exchange rates on cash and cash equivalents		—			(97	)		—			—			(97	)

Net increase (decrease) in cash and cash equivalents		(29,689	)		1,484			—			—			(28,205	)

Cash and cash equivalents at beginning of period		41,724			663			2			—			42,389

Cash and cash equivalents at end of period	$	12,035		$	2,147		$	2		$	—		$	14,184

GREAT LAKES DREDGE & DOCK CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2014
(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	$	63,276		$	999		$	2,879		$	—		$	67,154
Net cash flows used in operating activities of discontinued operations		(17,328	)		(1,024	)		—			—			(18,352	)
Cash provided by (used in) operating activities		45,948			(25	)		2,879			—			48,802

INVESTING ACTIVITIES:
Purchases of property and equipment		(91,910	)		—			—			—			(91,910	)
Proceeds from dispositions of property and equipment		68			—			—			—			68
Payments for acquisitions of businesses		(2,048	)		—			(25,000	)		—			(27,048	)
Payments on vendor performance obligations		(3,100	)		—			—			—			(3,100	)
Net change in accounts with affiliates		68,187			—			—			(68,187	)		—
Net cash flows used in investing activities of continuing operations		(28,803	)		—			(25,000	)		(68,187	)		(121,990	)
Net cash flows used in investing activities of discontinued operations		5,275			—			—			—			5,275
Cash used in investing activities		(23,528	)		—			(25,000	)		(68,187	)		(116,715	)

FINANCING ACTIVITIES:
Proceeds from term loan facility		—			—			47,360			—			47,360
Repayments of term loan facility		—			—			(417	)		—			(417	)
Proceeds from issuance of 7 3/8% senior notes		—			—			24,880			—			24,880
Deferred financing fees		—			—			(2,532	)		—			(2,532	)
Taxes paid on settlement of vested share awards		—			—			(497	)		—			(497	)
Purchase of noncontrolling interest		—			—			(205	)		—			(205	)
Net change in accounts with affiliates		—			(2,547	)		(65,640	)		68,187			—
Transfer to parent		(52,400	)		—			52,400			—			—
Repayments of equipment debt		(235	)		—			—			—			(235	)
Exercise of stock options and purchases from employee stock plans		—			—			1,568			—			1,568
Excess income tax benefit from share-based compensation		—			—			206			—			206
Borrowings under revolving loans		—			—			236,500			—			236,500
Repayments of revolving loans		—			—			(271,500	)		—			(271,500	)
Cash provided by (used in) financing activities		(52,635	)		(2,547	)		22,123			68,187			35,128

Effect of foreign currency exchange rates on cash and cash equivalents		—			(164	)		—			—			(164	)

Net decrease in cash and cash equivalents		(30,215	)		(2,736	)		2			—			(32,949	)

Cash and cash equivalents at beginning of period		71,939			3,399			—			—			75,338

Cash and cash equivalents at end of period	$	41,724		$	663		$	2		$	—		$	42,389