Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill for the years ended December 31, 2020, 2019 and 2018, were as follows:

(in thousands)	CAG		Water		LPD		Other		Consolidated Total
Balance as of December 31, 2017	$	166,236	$	11,951	$	15,155	$	6,531	$	199,873
Business combinations	20,282		—		—		—		20,282
Impact of changes in foreign currency exchange rates	(4,132)		(730)		(804)		—		(5,666)
Balance as of December 31, 2018	$	182,386	$	11,221	$	14,351	$	6,531	$	214,489
Business combinations	24,826		—		—		—		24,826
Impact of changes in foreign currency exchange rates	138		390		(119)		—		409
Balance as of December 31, 2019	$	207,350	$	11,611	$	14,232	$	6,531	$	239,724
Business combinations	220		—		—		—		220
Acquisition adjustment	(1,900)		—		—		—		(1,900)
Impact of changes in foreign currency exchange rates	4,724		412		167		—		5,303
Balance as of December 31, 2020	$	210,394	$	12,023	$	14,399	$	6,531	$	243,347

Schedule of Estimated Useful Lives for Intangible Assets

We provide for amortization primarily using the straight-line method by charges to income in amounts that allocate the intangible assets over their estimated useful lives as follows:

Asset Classification	Estimated Useful Life
Customer-related intangible assets (1)	3 to 17 years
Product rights (2)	5 to 15 years
Noncompete agreements	3 to 5 years

(1)Customer-related intangible assets are comprised of customer lists and customer relationships acquired from third parties.

(2)Product rights comprise certain technologies, intellectual property, licenses, and trade names acquired from third parties.

Schedule of Intangible Assets Other Than Goodwill

Intangible assets other than goodwill consisted of the following:

(in thousands)	December 31, 2020						December 31, 2019
	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Customer-related intangible assets (1)	$	80,810	$	32,838	$	47,972	$	99,301	$	46,801	$	52,500
Product rights (2)	15,150		11,609		3,541		16,130		10,214		5,916
Noncompete agreements	1,250		220		1,030		170		118		52
	$	97,210	$	44,667	$	52,543	$	115,601	$	57,133	$	58,468

The above table excludes fully amortized intangible assets for the periods presented.

(1)Customer-related intangible assets are comprised of customer lists and customer relationships acquired from third parties.

(2)Product rights comprise certain technologies, intellectual property, licenses, and trade names acquired from third parties.

Schedule of Expected Amortization Expense

At December 31, 2020, the aggregate amortization expense associated with intangible assets is estimated to be as follows for each of the next five years and thereafter:

(in thousands)	Amortization Expense
2021	$	8,648
2022	7,415
2023	5,647
2024	4,684
2025	4,210
Thereafter	21,939
	$	52,543