Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table presents the goodwill balance by reportable segment (in thousands):

December 31,	2018		2017
Transportation	$	19,798	$	19,798
Water		144,319		618
Specialty		40,866		31,437
Materials		54,488		1,946
Total goodwill	$	259,471	$	53,799

Change in goodwill

The following table presents the changes in goodwill since December 31, 2017 (in thousands):

Balance at December 31, 2017	$	53,799
Layne acquisition goodwill		187,619
LiquiForce acquisition goodwill		19,269
Goodwill translation and other adjustments		(1,216	)
Balance at December 31, 2018	$	259,471

Summary of amortized intangible assets

The following is the breakdown of our amortized intangible assets that are included in other noncurrent assets in the consolidated balance sheets (in thousands):

			Accumulated
December 31, 2018	Gross Value		Amortization			Net Value
Assets
Customer relationships	$	38,137	$	(7,640	)	$	30,497
Permits		25,959		(13,494	)		12,465
Backlog		9,713		(5,795	)		3,918
Developed technologies		9,233		(1,384	)		7,849
Trademarks/trade name		9,075		(1,381	)		7,694
Favorable contracts, covenants not to compete and other		5,781		(2,489	)		3,292
Intangible assets		97,898		(32,183	)		65,715
Liabilities
Unfavorable contracts and leases	$	7,000	$	(4,726	)	$	2,274
Intangible liabilities	$	7,000	$	(4,726	)	$	2,274
Total net amortized intangible assets	$	90,898	$	(27,457	)	$	63,441

December 31, 2017
Permits	$	25,959	$	(12,504	)	$	13,455
Customer lists		2,200		(1,467	)		733
Trademarks/trade name		4,100		(2,159	)		1,941
Covenants not to compete and other		50		(26	)		24
Total amortized intangible assets	$	32,309	$	(16,156	)	$	16,153