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Investment in Real Estate, Net - Schedule of Investment in Real Estate (Details) - USD ($)
Jun. 30, 2020
Jun. 30, 2019
Real estate investment, Gross $ 48,870,000 $ 50,306,000
Real estate investment, Accumulated depreciation (44,112,000) (41,629,000)
Real estate investment, Land held for development 1,468,000 1,467,000
Real estate investment, Net 50,338,000 51,773,000
Land [Member]    
Real estate investment, Gross 23,565,000 23,566,000
Buildings Improvements and Equipment [Member]    
Real estate investment, Gross $ 69,417,000 $ 68,369,000