Business Segments (Details Narrative)	9 Months Ended
	Sep. 30, 2017 a ft² 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	300,000
Stabilization percent leased and occupied		90.00%