ACQUISITION OF SANGAMO THERAPEUTICS FRANCE S.A.S. - Summary of Non-controlling Interest (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Noncontrolling Interest [Roll Forward]
Balance at December 31, 2020			$ (868)
Fair value of additional shares acquired			(64)
Loss attributable to non-controlling interest	$ 0	$ 42	(11)	$ (55)
Buy-out of non-controlling interest			943	$ 0
Balance at September 30, 2021	$ 0		$ 0

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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+ Details