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Warrants (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Mar. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2018 award shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) $ / shares | Dec. 31, 2019 USD ($) | Jul. 02, 2021 $ / shares shares
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |
Number of warrant awards | award |  |  |  | 5 |  |  |  |
Proceeds from warrants exercised | $ |  |  |  |  | $ 10,172 | $ 0 | $ 0 |
Series D |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |
Warrants exercised during period (in shares) | 421,039 |  | 421,039 |  |  |  |  |
Exercise price of warrants (in dollars per share) | $ / shares |  |  | $ 3.562605 |  |  |  |  |
Proceeds from warrants exercised | $ |  |  | $ 1,500 |  |  |  |  |
Series D | Maximum |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |
Number shares warrants can purchase (in shares) |  |  |  | 2,111,997 |  |  |  |
Series D-1 |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |
Number shares warrants can purchase (in shares) | 1,269,919 |  |  | 4,317,725 |  |  |  |
Warrants exercised during period (in shares) | 1,654,276 | 548,032 |  |  |  |  |  |
Exercise price of warrants (in dollars per share) | $ / shares | $ 3.937257 | $ 3.937257 |  |  |  | $ 3.937257 |  |
Proceeds from warrants exercised | $ | $ 8,000 | $ 2,200 |  |  |  |  |  |
Series G Preferred Stock |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |
Number shares warrants can purchase (in shares) |  |  |  |  | 598,431 |  |  | 598,431
Exercise price of warrants (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 13.827822
Expiration period |  |  |  |  | 10 years |  |  |

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- Definition Stock And Warrants Issued During Period, Shares, Preferred Stock And Warrants + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + 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=123467817&loc=d3e21475-112644 + Details
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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=123467817&loc=d3e21475-112644 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock warrants. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
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