Goodwill and other intangible assets, net (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill by operating segment

The following table summarizes the changes in goodwill by operating segment for the six months ended June 30, 2020 (in thousands):

	Drainage Pipe & Products			Water Pipe & Products		Total
Balance at December 31, 2019	$	190,466		$	318,360	$	508,826
Foreign currency and other adjustments	(644		)	—		(644		)
Balance at June 30, 2020	$	189,822		$	318,360	$	508,182

Schedule of intangible assets

Intangible assets other than goodwill at June 30, 2020 and December 31, 2019 included the following (in thousands):

	Net carrying value as of June 30, 2020		Net carrying value as of December 31, 2019
Customer relationships	$	85,686	$	100,869
Trade names	17,280		19,626
Patents	6,351		7,673
Non-compete agreements	6,453		8,070
Developed technology	5,793		5,980
Other	415		456
Total intangible assets	$	121,978	$	142,674