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Note 4 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Goodwill [Table Text Block]

		December 31,
(in thousands)		2021				2020
Balance beginning of year		$	58,590			$	57,381
Effect of change in currency translation			(901	)			1,209
Balance at end of year		$	57,689			$	58,590

Schedule of Intangible Assets and Goodwill [Table Text Block]

						December 31,
						2021												2020
(in thousands)		Average								Accumulated												Accumulated
Amortizable intangible assets:		Life*				Gross				Amortization				Net				Gross				Amortization				Net
Distribution agreements/customer relationships			7.9			$	17,689			$	(8,675	)		$	9,014			$	18,237			$	(7,746	)		$	10,491
Existing technology			4.2				38,707				(23,962	)			14,745				38,761				(20,674	)			18,087
Trade names and patents			4.5				8,496				(5,108	)			3,388				8,681				(4,362	)			4,319
Total amortizable intangible assets						$	64,892			$	(37,745	)		$	27,147			$	65,679			$	(32,782	)		$	32,897
Indefinite-lived intangible assets:															238												254
Total intangible assets														$	27,385											$	33,151

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

		Amortization
Year Ending December 31,		Expense
(in thousands)
2022		$	5,766
2023			5,661
2024			5,359
2025			4,262
2026			2,452
Thereafter			3,647
Total		$	27,147

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