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GOODWILL AND INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Goodwill [Line Items]
Excess of fair value of reporting unit over carrying value	$ 1,100
Goodwill [Roll Forward]
Goodwill	4,637		4,679
Goodwill, Acquired During Period	1,930
Goodwill, Translation Adjustments	63		(42)
Goodwill	6,630		4,637
Percentage excess of fair value of reporting unit over carrying value	17.00%
Energy & Security Sonar Solutions Segment [Member]
Goodwill [Roll Forward]
Goodwill	527		568
Goodwill, Acquired During Period	0
Goodwill, Translation Adjustments	14		(41)
Goodwill	541		527
GridSense segment [Member]
Goodwill [Roll Forward]
Goodwill	2,708		2,709
Goodwill, Acquired During Period	0
Goodwill, Translation Adjustments	49		(1)
Goodwill	2,757		2,708
USSI segment [Member]
Goodwill [Roll Forward]
Goodwill	1,402		1,402
Goodwill, Acquired During Period	0
Goodwill, Translation Adjustments	0		0
Goodwill	1,402		1,402
Power Generation Monitoring segment [Member]
Goodwill [Roll Forward]
Goodwill	0		0
Goodwill, Acquired During Period	1,517
Goodwill, Translation Adjustments	0		0
Goodwill	1,517		0
All Other Segments [Member]
Goodwill [Roll Forward]
Goodwill	0	[1]	0	[1]
Goodwill, Acquired During Period	413	[1]
Goodwill, Translation Adjustments	0	[1]	0	[1]
Goodwill	$ 413	[1]	$ 0	[1]
[1] Results for the Cathodic Protection segment are included in "Other" in Segment Reporting (see Note 20).

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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