Note 3 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets [Table Text Block]

	March 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	1,026	$	454
Patented technology		590		356		234
Software		270		176		94
Trade name		140		112		28
Customer backlog		70		70		-
Non-compete/non-solicitation agreement		48		48		-
Total finite-lived intangible assets		2,598		1,788		810
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	3,108	$	1,788	$	1,320

	December 31, 2014
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	979	$	501
Patented technology		590		346		244
Software		270		169		101
Trade name		140		103		37
Customer backlog		70		70		-
Non-compete/non-solicitation agreement		48		48		-
Total finite-lived intangible assets		2,598		1,715		883
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	3,108	$	1,715	$	1,393

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

2015 (remainder)	$	216
2016	$	229
2017	$	212
2018	$	65
2019	$	39