SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - breakdown of the StartEngine Private assets held by industry (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	$ 4,272,008	$ 4,357,083
Food and Beverage Industry
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	515,238
Fintech
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	746,160
AI Hardware
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	751,209
AI Software
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	839,606
Energy
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	104,957
Sports
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	38,210
Aerospace
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	474,763
Sales Technology
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Investments - private	$ 801,866