Business Dispositions (Tables)

6 Months Ended

Jun. 30, 2019

Discontinued Operations And Disposal Groups [Abstract]

Schedule of Discontinued Operations

The results of the historical environmental & infrastructure businesses have been reported in discontinued operations as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2019			2018			2019			2018
Revenue	$	15,856		$	15,320		$	25,040		$	28,290
Loss before income taxes from discontinued operations		(2,044	)		(2,919	)		(6,237	)		(6,053	)
Loss on disposal of assets held for sale		(2,315	)		—			(2,630	)		—
Income tax benefit		1,108			764			2,236			1,584
Loss from discontinued operations, net of income taxes	$	(3,251	)	$	(2,155	)	$	(6,631	)	$	(4,469	)

Schedule of Major Classes of Assets and Liabilities of Businesses Reported as Discontinued Operations

The major classes of assets and liabilities of businesses reported as discontinued operations are shown below:

	December 31, 2018
Assets:
Accounts receivable—net	$	13,943
Contract revenues in excess of billings		9,971
Other current assets		865
Assets held for sale	$	24,779
Property and equipment—net		6,612
Operating lease assets		—
Goodwill		7,000
Other intangible assets—net		372
Other assets		1,699
Reserve for loss on disposal		(14,110	)
Assets held for sale—noncurrent	$	1,573
Liabilities:
Accounts payable	$	8,343
Accrued expenses		4,380
Operating lease liabilities		—
Other current liabilities		1,217
Liabilities held for sale	$	13,940
Other liabilities		146
Operating lease liabilities—noncurrent		—
Liabilities held for sale—noncurrent	$	146