Note 5 - Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Goodwill [Table Text Block]

	Sigma		Thermonics		Ambrell		Total
Balance - January 1, 2017	$	1,656	$	50	$	-	$	1,706
Acquisition of Ambrell		-		-		12,032		12,032
Balance - September 30, 2017	$	1,656	$	50	$	12,032	$	13,738

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

Balance - January 1, 2017	$	365
Acquisition of Ambrell		10,100
Amortization		(916	)
Balance - September 30, 2017	$	9,549

Schedule Of Intangible Assets [Table Text Block]

	September 30, 2017
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	10,480	$	1,640	$	8,840
Technology		600		54		546
Patents		590		454		136
Software		270		243		27
Trade name		140		140		-
Customer backlog		500		500		-
Total finite-lived intangible assets		12,580		3,031		9,549
Indefinite-lived intangible assets:
Trademarks		6,710		-		6,710
Total intangible assets	$	19,290	$	3,031	$	16,259

	December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	1,328	$	152
Patents		590		424		166
Software		270		223		47
Trade name		140		140		-
Total finite-lived intangible assets		2,480		2,115		365
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	2,990	$	2,115	$	875

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

2017 (remainder)	$	246
2018	$	1,102
2019	$	1,257
2020	$	1,233
2021	$	1,227