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Equity - Summarized Issuance Activity (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
May 17, 2021 | Mar. 12, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Private Placement | Second Lincoln Park Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  | 16,000 |  |  |
Private Placement | Keystone Capital Partners, LLC |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) | 4,000 |  |  |  |
Common Stock | Private Placement | Keystone Capital Partners, LLC | Keystone Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 3,066,000 |
Sale of stock, consideration received on transaction |  |  |  | $ 147,961 |
Common Stock | Private Placement | YA II PN, Ltd. | Second YA SEDA Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 3,790,000 |
Sale of stock, consideration received on transaction |  |  |  | $ 165,391 |
Common Stock | Private Placement | YA II PN, Ltd. | First YA SEDA |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 1,372,000 |
Sale of stock, consideration received on transaction |  |  |  | $ 40,556 |
Common Stock | Private Placement | Seven Knots, LLC | Seven Knots Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 4,009,000 |
Sale of stock, consideration received on transaction |  |  |  | $ 81,279 |
Common Stock | Private Placement | B. Riley Principal Capital, LLC | B. Riley Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 4,623,000 |
Sale of stock, consideration received on transaction |  |  |  | $ 67,989 |
Common Stock | Private Placement | M3A LP | M3A Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  | 0 | 900,000 |
Sale of stock, consideration received on transaction |  |  | $ 0 | $ 12,941 |
Common Stock | Private Placement | Lincoln Park Capital Fund, LLC | First Lincoln Park Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 205,000 | 855,000
Sale of stock, consideration received on transaction |  |  |  | $ 4,590 | $ 20,556
Common Stock | Private Placement | Lincoln Park Capital Fund, LLC | Second Lincoln Park Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 2,066,000 |
Sale of stock, consideration received on transaction |  |  |  | $ 43,586 |
Common Stock | Private Placement, Shares Sold | Keystone Capital Partners, LLC | Keystone Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 3,062,000 |
Common Stock | Private Placement, Shares Sold | Lincoln Park Capital Fund, LLC | First Lincoln Park Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 205,000 | 836,000
Common Stock | Private Placement, Shares Sold | Lincoln Park Capital Fund, LLC | Second Lincoln Park Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 2,050,000 |
Common Stock | Private Placement, Additional Commitment Shares | Keystone Capital Partners, LLC | Keystone Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 4,000 |
Common Stock | Private Placement, Additional Commitment Shares | Lincoln Park Capital Fund, LLC | First Lincoln Park Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 0 | 19,000
Common Stock | Private Placement, Additional Commitment Shares | Lincoln Park Capital Fund, LLC | Second Lincoln Park Purchase Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Shares issued (in shares) |  |  |  | 16,000 |

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