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Investments in Subsidiaries (Details Narrative) - USD ($) $ in Thousands |  |  |  | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 20, 2015 | Oct. 16, 2015 | Jan. 02, 2014 | Jan. 02, 2014 | Jun. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Nov. 30, 2014
Increase in non-controlling interests |  |  |  |  |  | $ 1,000 |  |
U.S. Seismic Systems, Inc [Member] |  |  |  |  |  |  |  |
Percentage of conversion stock |  |  | 95.70% |  |  |  |  |
Invested in common shares |  |  | $ 7,584 |  |  |  |  |
Cash investment |  |  | 5,355 | $ 5,355 |  |  |  |
Acorn common shares |  |  | 2,229 |  |  |  |  |
Additional purchase value of preferred stock |  |  | $ 16,750 |  |  |  |  |
Lent additional loan |  |  |  |  |  |  | $ 10,058 |
Loan bears interest rate |  |  |  |  |  |  | 8.00% |
U.S. Seismic Systems, Inc [Member] | Secured Promissory Notes [Member] |  |  |  |  |  |  |  |
Loan bears interest rate |  |  |  |  |  |  |  | 8.00%
Processing service value |  |  |  |  |  |  |  | $ 240
U.S. Seismic Systems, Inc [Member] | Series A 1 Preferred Stock [Member] |  |  |  |  |  |  |  |
Preferred stock owned |  |  |  | 9,376,401 |  |  |  |
Acorn [Member] | Secured Promissory Notes [Member] |  |  |  |  |  |  |  |
Loan bears interest rate |  |  |  |  |  |  | 8.00% |
Provision for secured promissory note |  |  |  |  | $ 640 |  |  |
Secured promissory note lent to channel partner |  |  |  |  | 640 |  |  |
Provision for secured promissory note interest accrued |  |  |  |  | $ 9 |  |  |
Received cash from the partner |  |  |  |  |  |  |  | $ 400
Omni Metrix [Member] |  |  |  |  |  |  |  |
Business acquistion interest rate |  | 10.00% |  |  |  |  |  |
Percentage of ownership |  | 100.00% |  |  |  |  |  |
Purchase of preferred stock |  | $ 500 |  |  |  |  |  |
Omni Metrix [Member] | Series A Preferred Stock [Member] |  |  |  |  |  |  |  |
Preferred stock owned | 1,000 | 1,000 |  |  |  |  |  |
Value of additional shares acquired | $ 500 |  |  |  |  |  |  |
Percentage of dividends accrued annum |  |  |  |  |  | 10.00% |  |
Dividend payable |  |  |  |  |  | $ 16 |  |
Pre-money equity valuation |  |  |  |  |  | $ 5,500 |  |

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