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.

No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Number of common shares issuable upon conversion for each share of preferred stock to be converted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Reserved for Future Issuance (Details)	Sep. 30, 2021 shares	Jun. 02, 2021	Dec. 31, 2020 shares
Common Stock
Number of shares reserved for future issuance	8,392,932		1,607,657
Series X redeemable convertible preferred stock
Common Stock
Number of shares reserved for future issuance	5,242,501
Preferred stock, outstanding (in shares)	31,455		0
Number of shares of common stock into which each share of Series X Preferred Stock may be converted	166.67	166.67
Warrants for the purchase of common stock
Common Stock
Number of shares reserved for future issuance	1,530,380		1,032,291
Options outstanding to purchase Common Stock
Common Stock
Number of shares reserved for future issuance	1,334,399		227,846
Options available for future issuance to purchase Common Stock
Common Stock
Number of shares reserved for future issuance	254,748		322,695
Shares reserved for the employee stock purchase plan
Common Stock
Number of shares reserved for future issuance	30,904		24,825