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Selected Balance Sheet Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Other Current Assets [Table Text Block] | PREPAID EXPENSES AND OTHER CURRENT ASSETS:
|  | December 31, 2018 |  |  | December 31, 2017 |
Prepaid insurances |  | $ | 419 |  |  | $ | 351 |
Prepaid consulting, subscriptions and other expenses |  |  | 132 |  |  |  | 290 |
Prepaid conferences, travel |  |  | 42 |  |  |  | 94 |
Prepaid clinical research organizations |  |  | - |  |  |  | 46 |
Clinical consulting services refund receivable |  |  | - |  |  |  | 46 |
Total |  | $ | 593 |  |  | $ | 827 |
Property, Plant and Equipment [Table Text Block] | PROPERTY AND EQUIPMENT
|  | December 31, 2018 |  |  | December 31 2017 |
Computers and office equipment |  | $ | 852 |  |  | $ | 851 |
Leasehold improvements |  |  | 439 |  |  |  | 439 |
Software |  |  | 11 |  |  |  | 11 |
|  |  | 1,302 |  |  |  | 1,301 |
Less: accumulated depreciation and amortization |  |  | (695 | ) |  |  | (429 | )
Total |  | $ | 607 |  |  | $ | 872 |
Accrued Expenses [Table Text Block] |
ACCRUED EXPENSES |  |  |  |  |  |
|  |  | December 31, 2018 |  |  |  | December 31, 2017 |
Accrued clinical consulting services |  | $ | 674 |  |  | $ | 658 |
Accrued vendor payments |  |  | 150 |  |  |  | 193 |
Accrued manufacturing costs |  |  | 83 |  |  |  | 661 |
Other accrued expenses |  |  | 12 |  |  |  | 14 |
Total |  | $ | 919 |  |  | $ | 1,526 |
Accrued Employee Benefits [Table Text Block] | ACCRUED EMPLOYEE BENEFITS
|  | December 31, 2018 |  |  | December 31, 2017 |
Accrued bonus expense |  | $ | 907 |  |  | $ | 1,283 |
Accrued severance |  |  | 307 |  |  |  | 590 |
Accrued vacation expense |  |  | 118 |  |  |  | 201 |
Total |  | $ | 1,332 |  |  | $ | 2,074 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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