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Concentrations
9 Months Ended
Sep. 30, 2017
Risks and Uncertainties [Abstract]  
Concentrations

(9) Concentrations.  One tenant accounts for 11% of the Company’s consolidated revenues during the quarter ended September 30, 2017.  The mining royalty lands segment has a total of four tenants currently leasing mining locations and one lessee that accounted for 15.4% of the Company’s consolidated revenues during the nine months ended September 30, 2017 and $106,769 of accounts receivable at September 30, 2017.  The termination of these lessees’ underlying leases could have a material adverse effect on the Company. The Company places its cash and cash equivalents with First Tennessee Bank.  At times, such amounts may exceed FDIC limits.