FAIR VALUE OF FINANCIAL INSTRUMENTS - Cost Method Investments (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Equity Securities Without Readily Determinable Fair Value [Roll Forward] | |||
| Investment balance before cumulative impairment as of January 1, | $ 1,500,000 | $ 3,005,000 | $ 3,005,000 |
| Accumulated impairment as of January 1, | 0 | $ 0 | |
| Investment beginning balance after cumulative impairment as of January 1, | 3,005,000 | 3,005,000 | |
| Impairment of investments | (1,505,000) | 0 | |
| Ending period balance | $ 1,500,000 | $ 3,005,000 | |