Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Total revenues	$ 18,563	$ 15,900	$ 50,762	$ 52,562
Transaction-based expenses:
Transaction-based expenses	(148)	(86)	(250)	(397)
Total revenues, less transaction-based expenses	18,415	15,814	50,512	52,165
Operating expenses:
Compensation and benefits	27,650	44,040	78,566	115,064
Professional services	2,883	3,799	8,884	11,169
Acquisition-related transaction costs	0	821	0	5,219
Advertising and market development	910	928	2,463	3,873
Rent and occupancy	1,142	1,097	3,616	3,803
Technology and communications	3,763	3,536	10,628	8,368
General and administrative	1,870	2,601	8,143	7,373
Depreciation and amortization	1,710	1,428	5,246	4,531
Total operating expenses	39,928	58,250	117,546	159,400
Operating loss	(21,513)	(42,436)	(67,034)	(107,235)
Interest and other income (expenses):
Interest income	1,725	874	4,553	1,161
Change in fair value of warrant liabilities	907	25,210	(2,715)	19,808
Other income (expenses), net	215	202	647	731
Total interest income and other income (expenses)	2,847	26,286	2,485	21,700
Loss before provision for income taxes	(18,666)	(16,150)	(64,549)	(85,535)
Provision for income taxes	291	48	769	206
Net loss	(18,957)	(16,198)	(65,318)	(85,741)
Net loss attributable to noncontrolling interest	(609)	0	(893)	0
Net loss attributable to Forge Global Holdings, Inc.	$ (18,348)	$ (16,198)	$ (64,425)	$ (85,741)
Net loss per share attributable to Forge Global Holdings, Inc. common stockholders:
Basic (in dollars per share)	$ (0.11)	$ (0.10)	$ (0.37)	$ (0.64)
Diluted (in dollars per share)	$ (0.11)	$ (0.12)	$ (0.37)	$ (0.66)
Weighted-average shares used in computing net loss per share attributable to Forge Global Holdings, Inc. common stockholders:
Basic (in shares)	173,957,880	169,838,778	173,045,721	134,683,950
Diluted (in shares)	173,957,880	170,209,256	173,045,721	135,960,612
Placement fees
Revenues:
Total revenues	$ 7,283	$ 8,227	$ 17,638	$ 33,763
Custodial administration fees
Revenues:
Total revenues	$ 11,280	$ 7,673	$ 33,124	$ 18,799