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ACQUISITION OF SANGAMO THERAPEUTICS FRANCE S.A.S. - Summary of Non-controlling Interest (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Noncontrolling Interest [Roll Forward]
Balance at December 31, 2019			$ 185
Fair value of additional shares acquired			(339)
Loss attributable to non-controlling interest	$ (36)	$ (72)	(97)	$ (125)
Balance at June 30, 2020	$ (251)		$ (251)

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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