Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenues:
Total revenues	$ 79,329	$ 69,821
Transaction-based expenses:
Transaction-based expenses	(674)	(431)
Total revenues, less transaction-based expenses	78,655	69,390
Operating expenses:
Compensation and benefits	112,991	106,593
Technology and communications	12,481	14,507
General and administrative	10,831	12,510
Professional services	8,405	11,905
Depreciation and amortization	6,658	6,954
Rent and occupancy	5,218	4,884
Advertising and market development	4,334	3,486
Total operating expenses	160,918	160,839
Operating loss	(82,263)	(91,449)
Interest and other income:
Interest income	5,675	6,421
Change in fair value of warrant liabilities	9,424	(6,465)
Other income, net	387	763
Total interest and other income	15,486	719
Loss before provision for income taxes	(66,777)	(90,730)
Provision for income taxes	1,066	819
Net loss	(67,843)	(91,549)
Net loss attributable to noncontrolling interest	(1,510)	(1,328)
Net loss attributable to Forge Global Holdings, Inc.	$ (66,333)	$ (90,221)
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ (0.36)	$ (0.52)
Diluted (in dollars per share)	$ (0.36)	$ (0.52)
Weighted-average shares used in computing net loss per share attributable to Forge Global Holdings, Inc. common stockholders:
Basic (in shares)	183,160,263	173,402,167
Diluted (in shares)	183,160,263	173,402,167
Marketplace revenue
Revenues:
Total revenues	$ 37,540	$ 25,790
Custodial administration fees
Revenues:
Total revenues	$ 41,789	$ 44,031