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Stockholders' Equity [Line Items]

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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Risk-free interest rate assumption used in valuing an instrument.

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- Definition

Cash received on stock transaction after deduction of issuance costs.

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No definition available.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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)(iv)(4)
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Stockholders' Equity And Stock-Based Compensation (Narrative) (Details)		3 Months Ended
	Feb. 07, 2017 USD ($) $ / shares shares	Mar. 31, 2017 USD ($) item $ / shares shares	Mar. 31, 2016 USD ($)	Dec. 31, 2016 $ / shares
Stockholders' Equity [Line Items]
Common stock, par value \| $ / shares		$ 0.001		$ 0.001
Number of equity compensation plans \| item		1
Stock-based compensation		$ 263,000	$ 193,000
General And Administrative [Member]
Stockholders' Equity [Line Items]
Stock-based compensation		204,000	148,000
Research And Development [Member]
Stockholders' Equity [Line Items]
Stock-based compensation		$ 59,000	$ 45,000
Stock Options [Member]
Stockholders' Equity [Line Items]
Expected term		9 years 10 months 24 days
Expected volatility		80.00%
Risk-free interest rate		2.40%
Dividend yield		0.00%
Number of shares terminated \| shares
Common Stock [Member] \| Private Placement [Member]
Stockholders' Equity [Line Items]
Shares sold \| shares	819,673
Common stock, par value \| $ / shares	$ 0.001
Price per share \| $ / shares	$ 6.10
Net proceeds	$ 4,965,000