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Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Cash equivalents investments, description | money market funds and short-term bank deposits (up to three months from date of deposit or with maturity of three months from date of purchase) that are not restricted as to withdrawal or use, to be cash equivalents. |
Short term bank deposits | 3 months |
Charged expense | $ 0 | $ 28
Allowance for doubtful accounts | 11 | 11
Deposited cash and cash equivalents | 481 |
Advertising expenses | $ 17 | $ 9
Weighted average number of options and warrants | 4,172,000 | 4,904,000
Omni Metrix [Member] |  |
Estimated life of the customer relationship | 24 months |
Advance payment for monitoring fees, term | $ 12 |
Subsidiaries [Member] |  |
Percentage of controlled interest | 50.00% |

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