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Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Reclassification from interest expense |  |  | $ 6
Charged to expense | $ 21 |  | 14
Allowance for doubtful accounts | 9 |  | 11
Impairment charges |  |  |
Capitalized costs | 87 |  | 163
Lease obligation liability | 542 | [1] | 595
Deposited cash and cash equivalents | 2,063 |  |
Penalties and interest accrued |  |  |
Unrecognized tax benefits |  |  |
Weighted average number of options and warrants | 409,626 |  | 3,368,013
Weighted average exercise price of options and warrants | $ 0.84 |  |
Selling, General and Administrative Expenses [Member] |  |  |
Advertising expenses | $ 15 |  | $ 17
Omni Metrix [Member] |  |  |
Estimated life of the customer relationship | 3 years |  |
Advance payment for monitoring fees, term | 12 months |  |
Subsidiaries [Member] |  |  |
Percentage of controlled interest | 50.00% |  |
[1] | Includes current portion of approximately $99,000 for operating leases.

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