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Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 02, 2018 | May 14, 2018 | Nov. 10, 2017 | Mar. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Net loss |  |  |  |  | $ (8,652) | $ (9,329)
Net cash used in operating activities |  |  |  |  | (9,328) | (7,127)
Accumulated deficit |  |  |  |  | (229,281) | (220,629)
Proceeds from issuance of private placement |  |  |  | $ 1,400 |  |
Proceeds from issuance of public offering |  | $ 15,000 |  |  |  |
Reverse stock split |  |  | 1 for 12 reverse stock split. |  |  |
Impairment loss for definite-lived intangible assets |  |  |  |  |  |
Advertising costs |  |  |  |  | $ 100 | $ 100
Income tax position, description |  |  |  |  | Less than a 50% |
Leasehold Improvements [Member] |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  |  | 5 years |
Minimum [Member] |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  |  | 3 years |
Maximum [Member] |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  |  | 5 years |
Trade Accounts Receivable [Member] | One Customer [Member] |  |  |  |  |  |
Concentration credit risk |  |  |  |  | 51.00% |
Revenues [Member] | One Customer [Member] |  |  |  |  |  |
Concentration credit risk |  |  |  |  | 100.00% |
Retail Spine Business [Member] |  |  |  |  |  |
Related party note payable assumed amount | $ 2,500 |  |  |  |  |
Retail Spine Business [Member] | Next Eighteen Months [Member] |  |  |  |  |  |
Proceeds from sales of business | 2,500 |  |  |  |  |
Retail Spine Business [Member] | Following Eighteen Months [Member] |  |  |  |  |  |
Proceeds from sales of business | $ 3,500 |  |  |  |  |

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