Note 5 - Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 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		-		-		16,820		16,820
Balance - June 30, 2017	$	1,656	$	50	$	16,820	$	18,526

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

Balance - January 1, 2017	$	365
Acquisition of Ambrell		9,500
Amortization		(303	)
Balance - June 30, 2017	$	9,562

Schedule Of Intangible Assets [Table Text Block]

	June 30, 2017
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	7,980	$	1,492	$	6,488
Patented technology		2,090		457		1,633
Software		270		236		34
Trade name		640		150		490
Customer backlog		1,000		83		917
Total finite-lived intangible assets		11,980		2,418		9,562
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	12,490	$	2,418	$	10,072

	December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	1,328	$	152
Patented technology		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)	$	1,285
2018	$	1,840
2019	$	1,397
2020	$	1,388
2021	$	1,301