Note 3 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

Schedule Of Intangible Assets [Table Text Block]

	March 31, 201 7
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	1,365	$	115
Patented technology		590		434		156
Software		270		229		41
Trade name		140		140		-
Total finite-lived intangible assets		2,480		2,168		312
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	2,990	$	2,168	$	822

	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)	$	158
2018	$	65
2019	$	39
2020	$	30
2021	$	15