Business Segments (Details Narrative)	3 Months Ended
	Mar. 31, 2018 a Segments	Jun. 30, 2017 ft²
Reportable business segments | Segments	4
Mining royalty lands
Mining royalty lands acres	15,000
Brooksville Quarry, LLC
Mining royalty lands acres	4,280
RiverFront on the Anacostia
Square feet | ft²		300,000
Stabilization percent leased and occupied		90.00%