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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Deficit (Parenthetical) - USD ($) | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Unit price (in dollars per Unit) | $ 64.96 |  | $ 64.96 |
Series A Redeemable Convertible Preferred Stock |  |  |  |
Class A common stock subject to possible redemption (in shares) | 6,956,100 |  | 6,956,100 | 0
Series X Redeemable Convertible Preferred Stock |  |  |  |
Temporary equity issuance costs | $ 5,889,000 |  |  |
Unit price (in dollars per Unit) | $ 140.78 |  | $ 140.78 |
Class A common stock subject to possible redemption (in shares) | 1,251,971 |  | 0 |
Class A Common Stock |  |  |  |
Stock issuance costs |  | $ 1,592,000 | $ 1,592,000 |
Gores Metropoulos, Inc. |  |  |  |
Number of warrants sold |  | 6,666,666 | 6,666,666 |
Warrants sold, price per warrant |  | $ 1.50 | $ 1.50 |
Class A common stock subject to possible redemption (in shares) | 38,420,462 | 38,639,955 | 38,713,476 | 0
Class A common stock subject to possible redemption, redemption price | $ 10 | $ 10.00 | $ 10 | $ 10
Gores Metropoulos, Inc. | Class A Common Stock |  |  |  |
Unit price (in dollars per Unit) |  | $ 10.00 | $ 10.00 |
Class A common stock subject to possible redemption (in shares) |  |  | 38,713,476 | 0
Conversion Of Simple Agreements For Future Equity Into Temporary Equity | Series A Redeemable Convertible Preferred Stock |  |  |  |
Temporary equity issuance costs |  |  | $ 3,775,000 |
Conversion Of Simple Agreements For Future Equity Into Temporary Equity | Series X Redeemable Convertible Preferred Stock |  |  |  |
Temporary equity issuance costs |  | $ 3,775,000 |  |

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Amount to be paid per share that is classified as temporary equity by entity upon redemption. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (27) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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