The cash outflow on payments of underwriting discounts and commissions.

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Face amount or stated value per share of common stock.

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

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

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Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period.

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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.

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The cash inflow from the additional capital contribution to the entity.

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Per share or per unit amount of equity securities issued.

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Number of new stock issued during the period.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Subsequent events (Details) - USD ($) $ / shares in Units, $ in Millions				9 Months Ended
	Oct. 13, 2020	Oct. 06, 2020	Oct. 05, 2020	Sep. 30, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Proceeds from Issuance of Common Stock				$ 41.7
Payments Of Underwriting Discounts And Commissions				$ 3.1
Common Stock, Par or Stated Value Per Share				$ 0.0001	$ 0.0001
Common Stock, Shares Authorized				65,000,000	50,000,000
Preferred Stock, Par or Stated Value Per Share		$ 0.0001
IPO
Subsequent Event [Line Items]
Stock Issued		3,250,000
Share price		$ 12.00
Common Stock, Par or Stated Value Per Share		$ 0.0001
Common Stock, Shares Authorized		200,000,000
Preferred Stock, Shares Authorized		10,000,000
IPO costs				$ 2.5
Over-Allotment Option
Subsequent Event [Line Items]
Stock Issued	487,500
Share price	$ 12.00
Subsequent events
Subsequent Event [Line Items]
Stock Issued	487,500
Share price	$ 12.00
Subsequent events \| IPO
Subsequent Event [Line Items]
Stock Issued			3,250,000
Share price			$ 12.00
Proceeds from Issuance of Common Stock	$ 41.7
Payments Of Underwriting Discounts And Commissions	$ 3.1
Common stock issued for convertible preferred shares			5,670,184
Common Stock, Par or Stated Value Per Share		$ 0.0001
Preferred Stock, Shares Authorized		10,000,000
Preferred Stock, Par or Stated Value Per Share		$ 0.0001