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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Inventory (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Accounting Policies [Abstract]      
Inventory Write-down $ 357 $ 0 $ 0
Inventory write off - GridSense 349    
Inventory Valuation Reserves $ 316 $ 0