SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Receivables and Contractual Liabilities from Contracts with Customers (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Accounts receivable, net	$ 1,426,094	$ 4,688,322
Less: accounts receivable, net, held for discontinued operation	(144,856)	(1,406,457)
Accounts receivable, net, held for continuing operation	1,281,238	3,281,865
Contractual liabilities	3,106,185	4,202,001
Less: contractual liabilities, held for discontinued operation	(84,641)	(80,696)
Contractual liabilities, held for continuing operation	$ 3,021,544	$ 4,121,305