Note 4 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Schedule Of Intangible Assets [Table Text Block]

	March 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	1,207	$	273
Patented technology		590		396		194
Software		270		202		68
Trade name		140		140		-
Total finite-lived intangible assets		2,480		1,945		535
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	2,990	$	1,945	$	1,045

	December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	1,166	$	314
Patented technology		590		386		204
Software		270		196		74
Trade name		140		138		2
Total finite-lived intangible assets		2,480		1,886		594
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	2,990	$	1,886	$	1,104

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

2016 (remainder)	$	170
2017	$	212
2018	$	65
2019	$	39
2020	$	30