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Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Precigen shareholders' equity   $ 71,711 $ 378,722 $ 546,545
Unrealized gain on investments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Precigen shareholders' equity $ 13 7    
Income (loss) on foreign currency translation adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Precigen shareholders' equity 3,984 (27,475)    
Total accumulated other comprehensive income (loss)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Precigen shareholders' equity $ 3,997 $ (27,468) $ (28,612) $ (15,554)