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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2016
Stock-Based Compensation [Abstract] |
Weighted-Average Valuation Assumptions, Stock Option Grants | The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value of the stock option grants were as follows for the nine months ended September 30, 2016: ﻿ ﻿
﻿ |  |  |
﻿ |  |  |
﻿ |  | September 30,
﻿ |  | 2016
﻿Risk-free interest rate |  | 1.22 - 1.63 | %
﻿Expected volatility |  | 113-123 | %
﻿Expected term (in years) |  | 6.0 |
﻿Expected dividend yield |  | 0.0 | %
﻿
Allocation of Stock-Based Compensation Expenses | The estimated grant-date fair value of the Company’s stock-based awards is amortized ratably over the awards’ service periods. Stock-based compensation expense recognized for the three and nine months ended September 2016 and September 30, 2015 was as follows: ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
﻿ |  | 2016 |  | 2015 |  | 2016 |  | 2015
﻿ |  | (Unaudited) |  | (Unaudited) |  | (Unaudited) |  | (Unaudited)
﻿Research and development |  | $ | 37,000 |  | $ | 29,000 |  | $ | 89,000 |  | $ | 88,000
﻿General and administrative |  |  | 297,000 |  |  | 120,000 |  |  | 1,609,000 |  |  | 165,000
﻿Total stock-based compensation |  | $ | 334,000 |  | $ | 149,000 |  | $ | 1,698,000 |  | $ | 253,000
﻿
Summary of Stock Option Activity | The following table summarizes stock option activity for the nine months ended September 30, 2016: ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  | Options Outstanding
﻿ |  |  |  |  |  |  |  |  |  | Average |  |  |
﻿ |  |  |  |  |  |  |  | Weighted |  | Remaining |  |  |
﻿ |  | Shares |  |  |  |  | Average |  | Contractual |  |  |
﻿ |  | Available |  |  |  |  | Exercise |  | Term |  | Intrinsic
﻿ |  | For Grant |  | Shares |  | Price |  | (Years) |  | Value
﻿Balance, December 31, 2015 |  |  | 723,431 |  |  | 669,769 |  | $ | 8.68 |  |  | 9.29 |  | $ | -
﻿Granted |  |  | (231,208) |  |  | 231,208 |  |  | 2.82 |  |  | - |  |  | -
﻿Exercised |  |  | - |  |  | - |  |  | - |  |  | - |  |  | -
﻿Forfeited/Cancelled |  |  | 158,856 |  |  | (158,856) |  |  | 8.86 |  |  | - |  |  | -
﻿Expired |  |  | 1,083 |  |  | (5,183) |  |  | 12.72 |  |  | - |  |  | -
﻿Shares authorized |  |  | 1,000,000 |  |  | - |  |  | - |  |  | - |  |  | -
﻿Balance, September 30, 2016 |  |  | 1,652,162 |  |  | 736,938 |  | $ | 6.78 |  |  | 8.60 |  | $ | -
﻿Vested or expected to vest at September 30, 2016 |  |  |  |  |  | 626,777 |  | $ | 7.10 |  |  | 8.50 |  | $ | -
﻿Exercisable at September 30, 2016 |  |  |  |  |  | 179,501 |  | $ | 8.76 |  |  | 7.15 |  | $ | -
﻿
Shares Reserved for Future Issuance | As of September 30, 2016, the Company had reserved shares of its common stock for future issuance as follows: ﻿
﻿ |  |  |
﻿ |  |  |
﻿ |  | Shares Reserved
﻿Stock options outstanding |  |  | 736,938
﻿Employee stock purchase plan |  |  | 120,000
﻿Available for future grants under the 2016 Plan |  |  | 1,652,162
﻿Warrants |  |  | 2,443,479
﻿Total shares reserved |  |  | 4,952,579
﻿

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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