Date when an entity was incorporated

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- Definition

Organization and description of business.

+ References

No definition available.

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- Definition

Face amount or stated value per share of common stock.

+ References

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

Number of shares issued for each share of convertible preferred stock that is converted.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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- Definition

Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

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Organization and description of business - Additional Information (Details) $ / shares in Units, $ in Thousands			9 Months Ended
	Dec. 09, 2019 USD ($) $ / shares shares	Nov. 12, 2019 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Sep. 30, 2018 $ / shares
Organization And Description Of Business [Line Items]
Date of incorporation			Nov. 19, 2012
Reverse stock split description			The Company effected a one-for-5.056564 reverse stock split of its common stock on October 25, 2019. The reverse stock split combined each approximately five shares of the Company’s issued and outstanding common stock into one share of common stock and correspondingly adjusted the conversion price of its redeemable convertible preferred stock
Reverse stock split ratio			0.197762749566702
Accumulated deficit \| $			$ (144,675)	$ (104,823)
Common stock, shares issued (shares)			300,597	300,597
Public offering price \| $ / shares			$ 7.45		$ 4.38
Common stock, shares authorized (shares)			200,000,000	200,000,000
Common stock, par value \| $ / shares			$ 0.001	$ 0.001
Preferred stock, shares authorized (shares)			10,000,000	10,000,000
Preferred stock, par value \| $ / shares			$ 0.001	$ 0.001
Subsequent Event
Organization And Description Of Business [Line Items]
Shares issued upon conversion		19,061,502
Subsequent Event \| Redeemable Convertible Preferred Stock
Organization And Description Of Business [Line Items]
Shares issued upon conversion		19,061,502
IPO \| Subsequent Event
Organization And Description Of Business [Line Items]
Common stock, shares issued (shares)		5,000,000
Public offering price \| $ / shares		$ 12.00
Net proceeds from stock offering \| $		$ 53,100
Common stock, shares authorized (shares)		200,000,000
Common stock, par value \| $ / shares		$ 0.001
Preferred stock, shares authorized (shares)		10,000,000
Preferred stock, par value \| $ / shares		$ 0.001
Over-allotment option \| Subsequent Event
Organization And Description Of Business [Line Items]
Common stock, shares issued (shares)	445,690
Public offering price \| $ / shares	$ 12.00
Net proceeds from stock offering \| $	$ 5,000