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Stockholders' Equity (Details)	Jun. 30, 2020 $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Warrants issued to purchase redeemable convertible preferred stock (in shares)	426,827
Number of warrants exercised common stock (in shares)	32,120
Warrant expiration January 19, 2026
Subsidiary, Sale of Stock [Line Items]
Warrants issued to purchase redeemable convertible preferred stock (in shares)	252,798
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares	$ 1.84
Warrant expiration March 31, 2026
Subsidiary, Sale of Stock [Line Items]
Warrants issued to purchase redeemable convertible preferred stock (in shares)	69,176
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares	$ 1.84
Warrant expiration April 1, 2026
Subsidiary, Sale of Stock [Line Items]
Warrants issued to purchase redeemable convertible preferred stock (in shares)	131
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares	$ 1.84
Warrant expiration September 8, 2024
Subsidiary, Sale of Stock [Line Items]
Warrants issued to purchase redeemable convertible preferred stock (in shares)	83,778
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares	$ 14.32
Warrant expiration December 7, 2025
Subsidiary, Sale of Stock [Line Items]
Warrants issued to purchase redeemable convertible preferred stock (in shares)	20,944
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares	$ 14.32

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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-Topic 235
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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