Statement of Stockholders' (Deficit) Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Increase (Decrease) in Stockholders' Equity
Common Stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
IPO
Increase (Decrease) in Stockholders' Equity
Issuance costs	$ 5,417
Private Placement
Increase (Decrease) in Stockholders' Equity
Issuance costs	$ 1,667
Common Stock
Increase (Decrease) in Stockholders' Equity
Common Stock, par value (in dollars per share)	$ 0.0001	$ 0.0001

Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Period Type:	duration