Note 4 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Goodwill [Table Text Block]

Sigma	$	1,656
Thermonics		50
Ambrell		12,032
Total	$	13,738

Schedule of Carrying Value of Finite-lived Intangible Assets [Table Text Block]

Balance - January 1, 2019	$	8,201
Amortization		(1,257	)
Balance - December 31, 2019		6,944
Amortization		(1,233	)
Balance - December 31, 2020	$	5,711

Schedule Of Intangible Assets [Table Text Block]

	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	10,480	$	4,912	$	5,568
Technology		600		477		123
Patents		590		570		20
Software		270		270		-
Trade name		140		140		-
Total finite-lived intangible assets		12,080		6,369		5,711
Indefinite-lived intangible assets:
Trademarks		6,710		-		6,710
Total intangible assets	$	18,790	$	6,369	$	12,421

	December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	10,480	$	3,805	$	6,675
Technology		600		380		220
Patents		590		541		49
Software		270		270		-
Trade name		140		140		-
Total finite-lived intangible assets		12,080		5,136		6,944
Indefinite-lived intangible assets:
Trademarks		6,710		-		6,710
Total intangible assets	$	18,790	$	5,136	$	13,654

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

2021	$	1,227
2022	$	1,167
2023	$	1,067
2024	$	980
2025	$	905