Note 5 - Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Goodwill [Table Text Block]

	As of December 31,
	2019			2018
Balance at beginning of year	$	29,868		$	23,844
Additions for acquisitions		10,092			6,361
Divestiture adjustment		-			(135	)
Effects of currency exchange		(9	)		(202	)
Balance at end of year	$	39,951		$	29,868

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	December 31, 2019						December 31, 2018
	Gross				Net		Gross				Net
	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Value		Amortization		Value		Value		Amortization		Value
	(in thousands)
Product technology and intellectual property	$	13,502	$	5,722	$	7,780	$	11,728	$	5,726	$	6,002
Trademarks, tradenames and licenses		1,807		702		1,105		2,246		1,561		685
Customer relationships		18,215		3,364		14,851		10,065		3,806		6,259
Other intangible assets		1,725		568		1,157		2,145		1,399		746
Total identifiable intangible assets	$	35,249	$	10,356	$	24,893	$	26,184	$	12,492	$	13,692

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

	Year ended December 31,
	2019		2018		2017
			(in thousands)
Amortization expense	$	2,437	$	1,760	$	1,790

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

	Year ended December 31,
	2020		2021		2022		2023		2024
	(in thousands)
Amortization expense	$	3,224	$	2,956	$	2,751	$	2,677	$	2,477