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REAL ESTATE INVESTMENTS - Unamortized Balances of Intangible Lease Assets and Liabilities (Details) - Rental income, net $ in Thousands	Dec. 31, 2019 USD ($)
Amortization of intangible lease liabilities - below market leases
2020	$ 1,385
2021	1,335
2022	1,224
2023	984
2024	709
Thereafter	6,784
Total	12,421
Intangible lease asset - above market lease
Amortization of intangible lease assets - above market leases
2020	654
2021	647
2022	481
2023	288
2024	218
Thereafter	741
Total	$ 3,029

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