DERIVATIVE FINANCIAL INSTRUMENTS - Effect on statements of income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
DERIVATIVE FINANCIAL INSTRUMENTS
Net unrealized gain on derivative instruments for interest rate swaps	$ (198,222)	$ 172,585	$ (58,554)
Interest Rate Swap | Designated as Hedging Instrument | Cash Flow Hedging
DERIVATIVE FINANCIAL INSTRUMENTS
Net unrealized gain on derivative instruments for interest rate swaps	(198,722)	172,585	(58,554)
Total Amount of Interest Expense presented in the consolidated statements of operations	$ (18,586,782)	$ (15,457,325)	$ (15,723,733)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Investment Income, Interest	Investment Income, Interest	Investment Income, Interest