SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Asset and Liabilities Measured at Fair Value (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, equity securities	$ 1,617,000	$ 888,000
Total assets at fair value	1,617,000	888,000
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, equity securities	1,617,000	888,000
Total assets at fair value	1,617,000	888,000
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, equity securities	0	0
Total assets at fair value	0	0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, equity securities	0	0
Total assets at fair value	$ 0	$ 0