Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (91,549)	$ (111,905)	$ (18,499)
Foreign currency translation adjustment	378	1,155	0
Comprehensive loss	(91,171)	(110,750)	(18,499)
Less: Comprehensive (loss) income attributable to noncontrolling interest	(1,168)	416	0
Net loss attributable to Forge Global Holdings, Inc.	$ (90,003)	$ (111,166)	$ (18,499)