Revenue (Tables)

12 Months Ended

Dec. 31, 2018

Revenue From Contract With Customer [Line Items]

Summary of Type of Work and Customer, Contract Revenues

The following table sets forth, by type of work, the Company’s contract revenues for the years ended December 31, 2018, 2017 and 2016:

Revenues	2018		2017		2016
Capital—U.S.	$	333,037	$	185,113	$	219,914
Capital—foreign		14,088		42,306		59,413
Coastal protection		175,923		191,070		215,041
Maintenance		53,427		134,923		92,274
Rivers & lakes		44,320		38,747		50,826
Total revenues	$	620,795	$	592,159	$	637,468

The following table sets forth, by type of customer, the Company’s contract revenues for the years ended December 31, 2018, 2017 and 2016:

Revenues	2018		2017		2016
Federal government	$	468,421	$	375,276	$	409,941
State and local government		93,499		145,196		126,395
Private		44,787		29,381		41,719
Foreign		14,088		42,306		59,413
Total revenues	$	620,795	$	592,159	$	637,468

Schedule of Accounts Receivable

Accounts receivable at December 31, 2018 and December 31, 2017 are as follows:

		2018			2017
Completed contracts	$	8,592		$	10,658
Contracts in progress		48,418			28,212
Retainage		7,969			17,545
		64,979			56,415
Allowance for doubtful accounts		(200	)		—
Total accounts receivable—net	$	64,779		$	56,415
Current portion of accounts receivable—net	$	64,779		$	51,940
Long-term accounts receivable and retainage		—			4,475
Total accounts receivable—net	$	64,779		$	56,415

Components of Contracts in Progress

The components of contracts in progress at December 31, 2018 and December 31, 2017 are as follows:

		2018			2017
Costs and earnings in excess of billings:
Costs and earnings for contracts in progress	$	433,093		$	507,037
Amounts billed		(416,956	)		(451,829	)
Costs and earnings in excess of billings for contracts in progress		16,137			55,208
Costs and earnings in excess of billings for completed contracts		3,928			22,699
Total contract revenues in excess of billings	$	20,065		$	77,907
Current portion of contract revenues in excess of billings	$	17,953		$	77,907
Long-term contract revenues in excess of billings		2,112			—
Total contract revenues in excess of billings	$	20,065		$	77,907
Billings in excess of costs and earnings:
Amounts billed	$	(260,691	)	$	(301,788	)
Costs and earnings for contracts in progress		242,898			299,202
Total billings in excess of contract revenues	$	(17,793	)	$	(2,586	)

Summary of Revenues and Gross Profit from Foreign Project Operations

The Company derived revenues and gross profit from foreign project operations for the years ended December 31, 2018, 2017, and 2016, as follows:

	2018			2017			2016
Contract revenues	$	14,088		$	42,306		$	59,413
Costs of contract revenues		(19,866	)		(73,958	)		(66,729	)
Gross profit	$	(5,778	)	$	(31,652	)	$	(7,316	)

ASU 2014-09 [Member]

Revenue From Contract With Customer [Line Items]

Summary of Impact of Change in Accounting Principle on Consolidated Balance Sheets

At December 31, 2018, the impact of this change in accounting principle on the Consolidated Balance Sheets is as follows:

	December 31, 2018
ASSETS
Contract revenues in excess of billings	$	(18,334	)
Other current assets		8,953
Other		4,176
LIABILITIES AND EQUITY
Accrued expenses		(5,306	)
Billings in excess of contract revenues		5,834
Deferred taxes		(1,468	)
Accumulated deficit	$	(4,265	)

Summary of Impact of Change in Accounting Principle on Consolidated Statements of Operations

For the year ended December 31, 2018, the impact of this change in accounting principle on the Consolidated Statements of Operations is as follows:

	2018
Contract revenues	$	(14,696	)
Cost of contract revenues		(11,360	)
Income tax benefit		867
Loss from continuing operations		(2,469	)
Net loss	$	(2,469	)
Comprehensive loss	$	(2,469	)