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Organization and Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2019 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Deconsolidation, loss, amount |  |  |  |  |  |  |  |  |  |  | $ 2,648 |
Proceeds from sales of equity securities | $ 21,587 |  |  |  |  |  |  |  |  | $ 0 | 23,456 | $ 217
Unrealized and realized appreciation (depreciation) in fair value of equity securities and preferred stock, net | $ 7,348 |  |  |  |  |  |  |  |  | (106) | 7,833 | (30,200)
Net loss attributable to Precigen |  | $ (41,661) | $ (29,508) | $ (43,354) | $ (55,998) | $ (169,215) | $ (53,634) | $ (38,766) | $ (60,709) | (170,521) | (322,324) | $ (509,336)
Accumulated deficit |  | $ (1,823,390) |  |  |  | $ (1,652,869) |  |  |  | $ (1,823,390) | $ (1,652,869) |

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