v3.19.3.a.u2

Stock Incentive Plans - Incentive plan information and Stock options (Details) - USD ($)	1 Months Ended	12 Months Ended
	Oct. 31, 2016	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Feb. 28, 2010
2010 Stock Incentive Plan (the "2010 Plan")
Stock Benefit Plans
Common Stock reserved under the Plan	101,109				2,495,607
Options outstanding		1,374,799
2016 Plan
Stock Benefit Plans
Common Stock reserved under the Plan	1,401,109
Common Stock initially reserved under the Plan	1,300,000
Increase in number of shares reserved for issuance	2,000,000
Percentage on shares of common stock outstanding considered as additional shares authorized	4.00%
Shares available for future grant		644,710
Increase in shares available for future grant			$ 1,888,869
Outstanding stock options
Stock Benefit Plans
Options outstanding		5,404,000		4,106,000
Outstanding stock options \| More than 10% voting power
Stock Benefit Plans
Maximum exercise price, as a percent to fair market value of common stock		110.00%
Outstanding stock options \| More than 10% voting power \| Minimum
Stock Benefit Plans
Voting power (as a percent)		10.00%
Employee and director stock options
Stock Benefit Plans
Expiration period		10 years
Vesting period		4 years

Represents the information pertaining to number of common shares reserved for initial future issuance.

+ References

No definition available.

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- Definition

Represents increase in number of shares available for future grant.

+ References

No definition available.

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- Definition

Percentage on shares of common stock considered as additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

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- Definition

Voting interest ownership of plan participants in determining exercise price of stock options.

+ References

No definition available.

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- Definition

Maximum percentage of exercise price to fair market value of the entity's commons stock on the date of the award.

+ References

No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ 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 210.5-02.29)
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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Ra Pharmaceuticals, Inc. 10-K