RENTAL INCOME (Commercial Leases) (Details)	9 Months Ended
	Sep. 30, 2017 USD ($) ft² item
RENTAL INCOME
Annual base rent for expiring leases | $	$ 2,977,256
Total square feet for expiring leases | ft²	108,043
Total number of leases expiring | item	46
Percentage of annual base rent for expiring leases	100.00%
Through December 31, 2017
RENTAL INCOME
Annual base rent for expiring leases | $	$ 468,209
Total square feet for expiring leases | ft²	18,003
Total number of leases expiring | item	12
Percentage of annual base rent for expiring leases	16.00%
Through December 31, 2018
RENTAL INCOME
Annual base rent for expiring leases | $	$ 672,327
Total square feet for expiring leases | ft²	24,179
Total number of leases expiring | item	12
Percentage of annual base rent for expiring leases	23.00%
Through December 31, 2019
RENTAL INCOME
Annual base rent for expiring leases | $	$ 215,902
Total square feet for expiring leases | ft²	6,428
Total number of leases expiring | item	6
Percentage of annual base rent for expiring leases	7.00%
Through December 31, 2020
RENTAL INCOME
Annual base rent for expiring leases | $	$ 791,294
Total square feet for expiring leases | ft²	34,511
Total number of leases expiring | item	7
Percentage of annual base rent for expiring leases	27.00%
Through December 31, 2021
RENTAL INCOME
Annual base rent for expiring leases | $	$ 519,397
Total square feet for expiring leases | ft²	16,343
Total number of leases expiring | item	6
Percentage of annual base rent for expiring leases	17.00%
Through December 31, 2022
RENTAL INCOME
Annual base rent for expiring leases | $	$ 58,500
Total square feet for expiring leases | ft²	1,950
Total number of leases expiring | item	1
Percentage of annual base rent for expiring leases	2.00%
Through December 31, 2023
RENTAL INCOME
Annual base rent for expiring leases | $	$ 251,627
Total square feet for expiring leases | ft²	6,629
Total number of leases expiring | item	2
Percentage of annual base rent for expiring leases	8.00%
Through December 31, 2024
RENTAL INCOME
Percentage of annual base rent for expiring leases	0.00%
Through December 31, 2025
RENTAL INCOME
Percentage of annual base rent for expiring leases	0.00%
Through December 31, 2026
RENTAL INCOME
Percentage of annual base rent for expiring leases	0.00%