GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2020

GOODWILL AND OTHER INTANGIBLE ASSETS.

Schedule of changes in the carrying amounts of goodwill by reportable segment

	Water		Water
	Services		Infrastructure		Total
Balance as of December 31, 2019		186,468		80,466		266,934
Impairment		(186,468)		(80,466)		(266,934)
Balance as of March 31, 2020	$	—	$	—	$	—

Summary of components of other intangible assets

	As of March 31, 2020								As of December 31, 2019
	Gross				Accumulated		Net		Gross		Accumulated		Net
	Value		Impairment		Amortization		Value		Value		Amortization		Value
	(in thousands)								(in thousands)
Definite-lived
Customer relationships	$	116,554	$	—	$	(22,499)	$	94,055	$	116,554	$	(20,233)	$	96,321
Patents		10,110		—		(2,670)		7,440		10,110		(2,420)		7,690
Other		7,234		—		(5,242)		1,992		7,234		(4,766)		2,468
Total definite-lived		133,898		—		(30,411)		103,487		133,898		(27,419)		106,479
Indefinite-lived
Water rights		7,031		—		—		7,031		7,031		—		7,031
Trademarks		23,442		(9,082)		—		14,360		23,442		—		23,442
Total indefinite-lived		30,473		(9,082)		—		21,391		30,473		—		30,473
Total other intangible assets, net	$	164,371	$	(9,082)	$	(30,411)	$	124,878	$	164,371	$	(27,419)	$	136,952

Summary of future estimated amortization expense for other intangible assets

Amount

(in thousands)

Remainder of 2020	$	8,685
Year ending December 31, 2021		10,494
Year ending December 31, 2022		10,280
Year ending December 31, 2023		10,209
Year ending December 31, 2024		10,139
Thereafter		53,680
	$	103,487