DISCONTINUED OPERATIONS - Summary of assets and liabilities reported as discontinued operations (Parentheticals) (Details 1) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Inventory, net of reserve for obsolescence $ 8,315 $ 7,363
Discontinued operation | BNI Solutions, Inc. Digilog, Inc. and DCX Systems, Inc
   
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Allowance for doubtful accounts 600 16
Inventory, net of reserve for obsolescence $ 30 $ 30