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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, RISKS AND UNCERTAINTIES - Cost and Accumulated Depreciation for Real Estate Properties (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Sep. 30, 2018
Accounting Policies [Abstract]    
Real estate properties $ 72,507 $ 69,133
Accumulated depreciation (43,570) (42,272)
Real estate properties, net $ 28,937 $ 26,861