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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amounts of Goodwill by Segment | The changes in the carrying amounts of goodwill by segment from December 31, 2014 to March 31, 2015 were as follows:
|  | Energy & Security Sonar Solutions segment |  |  | GridSense segment |  |  | Total |
Balance at December 31, 2014 |  | $ | 518 |  |  | $ | 513 |  |  | $ | 1,031 |
Translation adjustment |  |  | (12 | ) |  |  | — |  |  |  | (12 | )
Balance at March 31, 2015 |  | $ | 506 |  |  | $ | 513 |  |  | $ | 1,019 |
Changes in Carrying Amounts and Accumulated Amortization of Intangible Assets | The changes in the carrying amounts and accumulated amortization of intangible assets from December 31, 2014 to March 31, 2015 were as follows:
|  | Cost |  |  | Accumulated amortization |  |  | Total |
Balance as of December 31, 2014 |  | $ | 2,175 |  |  | $ | (964 | ) |  | $ | 1,211 |
Amortization |  |  | — |  |  |  | (47 | ) |  |  | (47 | )
Cumulative translation adjustment |  |  | (74 | ) |  |  | 37 |  |  |  | (37 | )
Balance as of March 31, 2015 |  | $ | 2,101 |  |  | $ | (974 | ) |  | $ | 1,127 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 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) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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