Stock-Based Awards - Additional Information (Details)	Apr. 18, 2019 Installment $ / shares shares	Nov. 02, 2019 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares to be purchased warrants \| shares		1,747,000
Exercise price of warrants		$ 69.68
Amazon [Member] \| Commercial Agreement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares to be purchased warrants \| shares	1,747,441
Exercise price of warrants	$ 69.68
Estimated of fair value per warrant	$ 17.52
Warrants, number of vesting annual installments \| Installment	5
Warrants vest, beginning date	Jan. 15, 2020
Warrants vest, expiration date	Apr. 18, 2026

Estimate of fair value per warrant.

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- Definition

Number of vesting annual installments of warrants.

+ References

No definition available.

+ Details

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- Definition

Warrants or rights vested expiration date.

+ References

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- Definition

Warrants or rights vested start date.

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- Definition

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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- 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.

+ 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)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

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.

+ References

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