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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Revenue Recognition
Membership fee			$ 275
Percentage of bonus shares that the members are entitled			10.00%
Term of contract with customers			1 year
Deferred revenue	$ 3,556,657		$ 3,556,657		$ 3,569,450
Contract asset	0		0
Total revenues	38,639,791	$ 22,600,802	$ 107,921,525	$ 92,775,877
Revenue, Practical Expedient, Financing Component [true false]			false
Regulation Crowdfunding platform fees
Revenue Recognition
Revenue remaining performance obligation expected timing of satisfaction period			12 months
Total revenues	1,342,902	2,104,571	$ 4,732,083	6,274,866
Regulation A commissions
Revenue Recognition
Total revenues	362,002	653,056	1,285,413	2,903,462
StartEngine Premium
Revenue Recognition
Total revenues	532,170	730,500	1,226,770	2,321,935
StartEngine Secure
Revenue Recognition
Total revenues	305,134	308,930	933,092	966,013
StartEngine Private
Revenue Recognition
Total revenues	31,160,395	17,176,974	87,511,810	75,902,512
Venture Club revenue
Revenue Recognition
Total revenues	1,275,393	1,440,674	3,970,751	4,174,606
Vinovest
Revenue Recognition
Total revenues	3,448,383		7,680,650
Other service revenue
Revenue Recognition
Total revenues	$ 213,412	$ 186,097	$ 580,956	$ 232,483