RENTAL PROPERTIES (Reconciliation) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Rental Properties
Balance, Beginning	$ 398,629,793	$ 398,554,000
Additions:
Buildings, improvements and other assets	3,317,445	3,240,408	$ 62,267,137
Balance before deductions	401,947,238	401,794,408	400,169,548
Deduct:
Write-offs of retired or disposed assets	1,358,996	3,164,615	1,615,548
Balance, Ending	400,588,242	398,629,793	398,554,000
Accumulated Depreciation
Balance, Beginning	134,019,906	120,190,012
Add:
Depreciation for the year	16,572,131	16,994,509	14,414,411
Total additions	150,592,037	137,184,521	121,805,559
Deduct:
Accumulated depreciation of retired or disposed assets	1,358,997	3,164,615	1,615,547
Balance, Ending	$ 149,233,040	$ 134,019,906	$ 120,190,012