Common Stock Issued In Lieu Of Board Fees

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Number of common shares held by the related party representing the voting power.

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- Definition

Shares issued on exercise of warrants during period.

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- Definition

Value of stock purchased by board.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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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.

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Number of warrants or rights outstanding.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

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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.

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Number of non-option equity instruments exercised by participants.

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- Definition

Number of new stock issued during the period.

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Related Party Transactions - Overview of Related Parties (Details) - USD ($) $ / shares in Units, $ in Millions				12 Months Ended
	Nov. 01, 2017	Oct. 30, 2017	May 05, 1998	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transactions
Exercise price of warrants				$ 0.75	$ 0.08
Number of Warrants				5,098,916	2,768,882
Common stock issued in lieu of board fees				53,985	13,654	7,867
Stock issued (in shares)				1,535,848
Maximum
Related Party Transactions
Proceeds from issuance of common stock in lieu of director board and committee fees				$ 0.1	$ 0.1	$ 0.1
Board of Director
Related Party Transactions
Aggregate common shares				4,608,786
Common Stock
Related Party Transactions
Stock issued (in shares)	625,000	4,166,666	149,960
Common Stock \| Board of Director
Related Party Transactions
Ownership percentage				16.00%
Pillar II
Related Party Transactions
Number of warrants exercised						629,257
Proceeds from exercise of warrants						$ 3.5
Pillar Investment Entities
Related Party Transactions
Ownership percentage				11.00%
Besancon
Related Party Transactions
Number of warrants exercised						364,752
Exercise price of warrants					$ 3.76
Proceeds from exercise of warrants					$ 0.6	$ 1.9
Shares issued on exercise of warrants during the period					150,000
Baker Bros. Advisors LP
Related Party Transactions
Number of warrants exercised					2,700,791
Exercise price of warrants					$ 3.76
Proceeds from exercise of warrants					$ 9.5
Baker Bros. Advisors LP \| Pre-funded Warrants \| Scenario One
Related Party Transactions
Exercise price of warrants				$ 0.08
Baker Bros. Advisors LP \| Pre-funded Warrants \| Scenario One \| Maximum
Related Party Transactions
Number of Warrants				2,708,812
Baker Bros. Advisors LP \| Pre-funded Warrants \| Scenario Two \| Maximum
Related Party Transactions
Number of Shares				2,368,400
Baker Bros. Advisors LP \| Series B1 Preferred Warrant \| Scenario Two
Related Party Transactions
Exercise price of warrants				$ 152
Baker Bros. Advisors LP \| Preferred stock \| Scenario Two
Related Party Transactions
Exercise price of warrants				$ 1.52
Number of Warrants				23,684
Baker Bros. Advisors LP \| Common Stock
Related Party Transactions
Stock issued (in shares)		1,000,000