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GOODWILL AND INTANGIBLE ASSETS Schedule of Intangibles (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | $ 9,305 |  |  | $ 9,561 |
Amortization | (261) |  | (194) |  |
Cumulative Translation Adjustment | 5 |  |  |  |
Energy & Security Sonar Solutions Segment [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Weighted-Average Useful Life | 6 years |  |  |  |
Energy & Security Sonar Solutions Segment [Member] | Gross cost intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | 539 |  |  | 532 |
Amortization | 0 |  |  |  |
Cumulative Translation Adjustment | 7 |  |  |  |
Energy & Security Sonar Solutions Segment [Member] | Accumulated amortization intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | (390) |  |  | (364) |
Amortization | 20 |  |  |  |
Cumulative Translation Adjustment | (6) |  |  |  |
GridSense segment [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Weighted-Average Useful Life | 10 years |  |  |  |
GridSense segment [Member] | Gross cost intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | 2,785 |  |  | 2,777 |
Amortization | 0 |  |  |  |
Cumulative Translation Adjustment | 8 |  |  |  |
GridSense segment [Member] | Accumulated amortization intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | (958) |  |  | (873) |
Amortization | 81 |  |  |  |
Cumulative Translation Adjustment | (4) |  |  |  |
USSI segment [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Weighted-Average Useful Life | 20 years |  |  |  |
USSI segment [Member] | Gross cost intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | 2,715 |  |  | 2,715 |
Amortization | 0 |  |  |  |
Cumulative Translation Adjustment | 0 |  |  |  |
USSI segment [Member] | Accumulated amortization intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | (418) |  |  | (380) |
Amortization | 38 |  |  |  |
Cumulative Translation Adjustment | 0 |  |  |  |
Power Generation Monitoring segment [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Weighted-Average Useful Life | 13 years |  |  |  |
Power Generation Monitoring segment [Member] | Gross cost intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | 4,385 |  |  | 4,385 |
Amortization | 0 |  |  |  |
Cumulative Translation Adjustment | 0 |  |  |  |
Power Generation Monitoring segment [Member] | Accumulated amortization intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | (397) |  |  | (309) |
Amortization | 88 |  |  |  |
Cumulative Translation Adjustment | 0 |  |  |  |
All Other Segments [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-Lived Intangible Assets, Weighted-Average Useful Life | 9 years | [1] |  |  |
All Other Segments [Member] | Gross cost intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | 1,196 | [1] |  | 1,196 | [1]
Amortization | 0 | [1] |  |  |
Cumulative Translation Adjustment | 0 | [1] |  |  |
All Other Segments [Member] | Accumulated amortization intangibles [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Intangible assets | (152) | [1] |  | (118) | [1]
Amortization | 34 | [1] |  |  |
Cumulative Translation Adjustment | $ 0 | [1] |  |  |
[1] | ** Results for the Cathodic Protection segment are included in "Other" in Segment Reporting (see Note 9).

X
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Reflects increase (decrease) to the recorded value of indefinite-lived intangible assets for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of indefinite-lived intangible assets to fair value. + References No definition available. + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 42, 45 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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