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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)