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Subsequent Events (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands | Feb. 16, 2017 | Feb. 09, 2017 | Jan. 19, 2017 | Apr. 04, 2016 | Feb. 04, 2016
--- | --- | --- | --- | --- | ---
Gross proceeds from offering cost |  |  |  | $ 1,200 | $ 800
Subsequent Event [Member] |  |  |  |  |
Repay of principal and accrued unpaid interest |  | $ 5,500 |  |  |
Gross proceeds from offering cost |  |  | $ 9,700 |  |
Sale of common stock, shares |  |  | 1,399,140 |  |
Sale of common stock, price per share |  |  | $ 2.01 |  |
Pre-funded warrants to purchase of common stock, shares |  |  | 3,426,731 |  |
Pre-funded common stock purchase warrants price, per share |  |  | $ 2.00 |  |
Warrant exercise price, per share |  |  | $ 0.01 |  |
Subsequent Event [Member] | Aspire Capital [Member] |  |  |  |  |
Gross proceeds from offering cost | $ 4,500 |  |  |  |
Sale of common stock, shares | 2,100,000 |  |  |  |
Sale of common stock, price per share | $ 1.58 |  |  |  |
Pre-funded warrants to purchase of common stock, shares | 748,101 |  |  |  |
Pre-funded common stock purchase warrants price, per share | $ 1.57 |  |  |  |
Warrant exercise price, per share | $ 0.01 |  |  |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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