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SEGMENT REPORTING AND GEOGRAPHIC INFORMATION (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Information [Line Items]                      
Number of Operating Segments                 4    
Revenue from External Customers                 $ 19,980 $ 17,857 $ 17,539
Goodwill and Intangible Asset Impairment 0 5,615 1,116 0 0 0 0 0 6,731 0 0
Depreciation and amortization                 1,354 1,392 847
Stock compensation expense                 293 323 0
Segment net income (loss) before income taxes                 (22,502) (14,091) (4,169)
Total consolidated assets 50,956       67,336       50,956 67,336 85,805
Expenditures for segment assets                 2,345 537 475
Impairments                 1,930    
Energy & Security Sonar Solutions Segment [Member]
                      
Segment Reporting Information [Line Items]                      
Restructuring and Related Cost, Expected Cost                 0    
Revenue from External Customers                 11,815 12,229 9,104
Revenue from Related Parties                 0 0 0
Segment gross profit (loss)                 3,817 4,465 3,019
Goodwill and Intangible Asset Impairment                 0    
Depreciation and amortization                 247 226 220
Stock compensation expense                 148 0 0
Segment net income (loss) before income taxes                 (243) 809 (244)
Total consolidated assets 11,219       9,512       11,219 9,512 7,871
Expenditures for segment assets                 333 144 103
Impairments                 0    
GridSense segment [Member]
                      
Segment Reporting Information [Line Items]                      
Restructuring and Related Cost, Expected Cost                 594    
Revenue from External Customers                 5,026 3,662 7,119
Revenue from Related Parties                 0 0 0
Segment gross profit (loss)                 1,828 968 3,327
Goodwill and Intangible Asset Impairment                 0    
Depreciation and amortization                 342 390 375
Stock compensation expense                 0 0 0
Segment net income (loss) before income taxes                 (4,336) (5,378) (1,448)
Total consolidated assets 6,400       8,382       6,400 8,382 7,757
Expenditures for segment assets                 14 140 74
Impairments                 0    
USSI segment [Member]
                      
Segment Reporting Information [Line Items]                      
Restructuring and Related Cost, Expected Cost                 0    
Revenue from External Customers                 1,468 1,464 1,316
Revenue from Related Parties                 39 0 0
Segment gross profit (loss)                 (2,347) (1,021) (98)
Goodwill and Intangible Asset Impairment                 0    
Depreciation and amortization                 385 322 224
Stock compensation expense                 133 323 0
Segment net income (loss) before income taxes                 (9,646) (8,427) (2,775)
Total consolidated assets 8,081       7,759       8,081 7,759 5,515
Expenditures for segment assets                 1,998 224 276
Impairments                 0    
Power Generation Monitoring segment [Member]
                      
Segment Reporting Information [Line Items]                      
Restructuring and Related Cost, Expected Cost                 0    
Revenue from External Customers                 1,671 502 0
Revenue from Related Parties                 0 0 0
Segment gross profit (loss)                 867 129 0
Goodwill and Intangible Asset Impairment                 5,341    
Depreciation and amortization                 252 309 0
Stock compensation expense                 0 0 0
Segment net income (loss) before income taxes                 (7,011) (1,033) 0
Total consolidated assets 2,300       7,495       2,300 7,495 0
Expenditures for segment assets                 0 0 0
Impairments                 (1,517)    
All Other Segments [Member]
                      
Segment Reporting Information [Line Items]                      
Restructuring and Related Cost, Expected Cost                 0    
Revenue from External Customers                 1,776 1,562 1,389
Revenue from Related Parties                 0 0 0
Segment gross profit (loss)                 991 662 665
Goodwill and Intangible Asset Impairment                 1,390    
Depreciation and amortization                 128 145 28
Stock compensation expense                 12 0 0
Segment net income (loss) before income taxes                 (1,266) (62) 298
Total consolidated assets 870       2,442       870 2,442 482
Expenditures for segment assets                 0 29 22
Impairments                 (413) [1]    
Reportable Subsegments [Member]
                      
Segment Reporting Information [Line Items]                      
Restructuring and Related Cost, Expected Cost                 594    
Revenue from External Customers                 21,756 19,419 18,928
Revenue from Related Parties                 39 0 0
Segment gross profit (loss)                 5,156 5,203 6,913
Goodwill and Intangible Asset Impairment                 6,731    
Depreciation and amortization                 1,354 1,392 847
Stock compensation expense                 293 323 0
Segment net income (loss) before income taxes                 (22,502) (14,091) (4,169)
Total consolidated assets 28,870       35,590       28,870 35,590 21,625
Expenditures for segment assets                 $ 2,345 $ 537 $ 475
[1] Results for the Cathodic Protection segment are included in "Other" in Segment Reporting (see Note 21).