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Note 6 - Contracts in Progress (Tables) | 3 Months Ended
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Mar. 31, 2015
Contracts In Progress [Abstract] |
Schedule of Contracts in Progress [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2015 |  |  | 2014 |
Costs incurred on uncompleted contracts |  | $ | 2,704 |  |  | $ | 6,707 |
Estimated earnings |  |  | 763 |  |  |  | 1,507 |
Total revenues |  |  | 3,467 |  |  |  | 8,214 |
Less: billings to date |  |  | 3,467 |  |  |  | 8,237 |
Total |  | $ | - |  |  | $ | (23 | )
Balance sheet classification: |  |  |  |  |  |  |  |
Billings in excess of costs and estimated earnings on uncompleted contracts |  | $ | - |  |  | $ | 23 |

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- Details
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Namespace Prefix: | efoi_
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- Definition Table of contracts in progress. + References No definition available. + Details
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Namespace Prefix: | efoi_
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Balance Type: | na
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