PRINCIPAL BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
PRINCIPAL BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Cash and cash equivalents	$ 22,144,567	$ 52,137,707
Restricted cash	1,687,459	1,687,459
Total cash, cash equivalents and restricted cash	$ 23,832,026	$ 53,825,166	$ 71,421,601	$ 12,232,418