{"cik":880984,"taxonomy":"us-gaap","tag":"LongTermDebt","label":"Long-term Debt","description":"Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"ACORN ENERGY, INC.","units":{"USD":[{"end":"2009-12-31","val":530000,"accn":"0000880984-14-000004","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-17","frame":"CY2009Q4I"},{"end":"2009-12-31","val":530000,"accn":"0000880984-13-000004","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-18"},{"end":"2011-12-31","val":274000,"accn":"0000880984-13-000004","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-18","frame":"CY2011Q4I"},{"end":"2012-12-31","val":143000,"accn":"0000880984-14-000004","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-17","frame":"CY2012Q4I"},{"end":"2012-12-31","val":143000,"accn":"0000880984-13-000004","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-18"},{"end":"2013-12-31","val":0,"accn":"0000880984-14-000004","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-17","frame":"CY2013Q4I"}]}}