Settlement of a Related Party Relationship - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Oct. 05, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Transaction advisory costs recognized as expense		$ 2,000
Preferred Stock Redemption Discount		$ 207,361
Accrued expenses			$ 16,589	$ 10,846
Related Party Liability				100
Precigen
Annual Licensing fee			100
Accrued expenses			$ 100	$ 100
Intrexon Corporation/Precigen
Preferred stock, contract liability, derivative liability	$ 163,300
Increase in accumulated deficit	49,500
Related party transaction, amounts of transaction	212,800
Additional milestone payment for exclusively licensed program to be paid	52,500
Maximum Royalty payable	$ 100,000
Percentage of sublicensing income	20.00%
Royalty payment to be received	$ 50,000
Third Party Vendor
Transaction advisory costs recognized as expense	7,400
Series 1 Preferred Stock [Member]
Transaction advisory costs recognized as expense	5,400
Series 1 Preferred Stock [Member] | Intrexon Corporation/Precigen
Consideration transferred	207,300
Preferred Stock Redemption Discount	$ 5,400