Note 5 - Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2021

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

5. Goodwill and Other Intangible Assets

There was no change to goodwill during the quarter ended March 31, 2021. Other intangible assets consist of the following:

	March 31, 2021						December 31, 2020
	Gross				Net		Gross				Net
	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Value		Amortization		Value		Value		Amortization		Value
	(in thousands)
Product technology and intellectual property	$	29,951	$	8,691	$	21,260	$	29,951	$	7,947	$	22,004
Trademarks, tradenames and licenses		4,000		1,197		2,803		4,000		1,094		2,906
Customer relationships		38,525		6,066		32,459		38,525		5,424		33,101
Other intangible assets		1,767		950		817		1,767		873		894
Total identifiable intangible assets	$	74,243	$	16,904	$	57,339	$	74,243	$	15,338	$	58,905

These intangible assets are being amortized over their useful lives ranging from 2 to 16 years. The weighted-average amortization period for these intangibles as of March 31, 2021 is 11.9 years. Amortization expense is included in general and administrative expense and was as follows for the periods indicated.

	Three months ended March 31,
	2021		2020
	(in thousands)
Amortization expense	$	1,566	$	834

We estimate that amortization expense for the remainder of 2021 and for each of the five succeeding fiscal years will be as follows:

		Year ended December 31,
	2021		2022		2023		2024		2025		2026
	(in thousands)
Amortization expense	$	4,613	$	5,975	$	5,902	$	5,706	$	5,467	$	5,001