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The number of shares for each option award under the equity-based compensation plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share-Based Payments - Stock Option Plan 2015 (Details) - SOP 2015 - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Jun. 23, 2017	Aug. 25, 2016	Sep. 23, 2015	Apr. 02, 2015
Options
Outstanding at beginning of year (in shares)			1,794,360
Granted (in shares)			1,458,300
Forfeited (in shares)			(110,900)
Outstanding at end of year (in shares)	3,141,760		3,141,760
Vested and exercisable at end of year (in shares)	897,159		897,159
Weighted average exercise price in $ per share
Outstanding balance at beginning of year (in dollars per share)			$ 7.83
Granted (in dollars per share)			9.02
Forfeited (in dollars per share)			8.92
Outstanding balance at end of year (in dollars per share)	$ 8.34		8.34
Vested and exercisable balance at end of year (in dollars per share)	$ 7.67		$ 7.67
Aggregate intrinsic value
Vested and exercisable at end of year (in dollars)	$ 1,630		$ 1,630
Options
Share-Based Payments
Vesting period			4 years
Other disclosures
Share-based compensation expense	4,500	$ 1,600
Weighted-average grant date fair value (in dollars per share)			$ 5.05
Fair Value Assumptions
Expected term of options (in years)			6 years 1 month 6 days
Dividend yield (as a percent)			0.00%
Weighted-average remaining contractual life			8 years 8 months 12 days
Unrecognized compensation expense
Total unrecognized compensation related to non-vested options (in dollars)	$ 11,700		$ 11,700
Period of recognition of total unrecognized compensation related to options			1 year 4 months 24 days
Options \| First year
Share-Based Payments
Vesting period			1 year
Percentage that vests during the period			25.00%
Options \| Second, third, and fourth years
Share-Based Payments
Percentage that vests during the period			75.00%
Monthly vesting percentage			2.083%
Common Stock \| Nabriva Therapeutics AG ("Nabriva Austria")
Share-Based Payments
Maximum number of shares authorized					346,235	177,499	95,000
Common Stock \| Redomiciliation Transaction \| Nabriva Therapeutics AG ("Nabriva Austria")
Share-Based Payments
Number of shares to be awarded for each option when exercised				1
Ordinary Shares \| Redomiciliation Transaction \| Nabriva Therapeutics plc ("Nabriva Ireland")
Share-Based Payments
Number of shares to be awarded for each option when exercised				10
Minimum \| Options
Fair Value Assumptions
Range of expected volatility (as a percent)			55.60%
Range of risk-free interest rate (as a percent)			1.80%
Maximum \| Options
Share-Based Payments
Exercise period			10 years
Fair Value Assumptions
Range of expected volatility (as a percent)			62.00%
Range of risk-free interest rate (as a percent)			2.10%