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Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Apr. 21, 2016 | Dec. 31, 2016 | Dec. 31, 2015
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 |
Allowance for doubtful accounts |  | $ 11 | $ 20
Cash |  | 801 |
Advertising expenses |  | $ 9 | $ 20
Weighted average number of options and warrants |  | 4,904,000 | 5,001,000
Omni Metrix [Member] |  |  |
Estimated life of the customer relationship |  | 24 months |
Advance payment for monitoring fees, term |  | 12 months |
Warrant term |  | 1 year |
Trade Accounts Receivable [Member] |  |  |
Charged expense |  | $ 28 | $ 44
Subsidiaries [Member] |  |  |
Percentage of controlled interest |  | 50.00% |
DSIT Solutions, Ltd [Member] |  |  |
Company's holdings in DSIT prior to sale transaction | 78.70% |  |
Company's holdings after transaction | 41.20% |  |
DSIT Solutions, Ltd [Member] | Minimum [Member] |  |  |
Warrant term |  | 1 year |
DSIT Solutions, Ltd [Member] | Maximum [Member] |  |  |
Warrant term |  | 2 years |

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