Note 4 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	March 31, 2013
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	509	$	971
Patented technology		590		254		336
Software		270		122		148
Trade name		140		42		98
Customer backlog		70		70		-
Non-compete/non-solicitation agreement		48		32		16
Total finite-lived intangible assets		2,598		1,029		1,569
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	3,108	$	1,029	$	2,079

	December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Finite-lived intangible assets:
Customer relationships	$	1,480	$	439	$	1,041
Patented technology		590		233		357
Software		270		115		155
Trade name		140		33		107
Customer backlog		70		70		-
Non-compete/non-solicitation agreement		48		24		24
Total finite-lived intangible assets		2,598		914		1,684
Indefinite-lived intangible assets:
Sigma trademark		510		-		510
Total intangible assets	$	3,108	$	914	$	2,194

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

2013	$	446
2014	$	355
2015	$	289
2016	$	229
2017	$	212

Useful Life [Member]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Estimated Useful Life		Remaining Estimated Useful Life at March 31, 2013
	- - - - (in months) - - - -
Finite-lived intangible assets resulting from the acquisition of Sigma:
Customer relationships		72		18
Software		120		66
Patented technology		60		6
Finite-lived intangible assets resulting from the acquisition of Thermonics:
Customer relationships		72		57.5
Customer backlog		3		-
Trade name		48		33.5
Patented technology		132		117.5
Non-compete/non-solicitation agreement		18		6

Carrying Value Changes [Member]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

Balance - January 1, 2013	$	2,194
Amortization		(115	)
Balance - March 31, 2013	$	2,079