Note L - Income Taxes and Available Carryforward (Details Textual) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating Loss Carryforwards, Total	$ 1,568,000		$ 1,568,000
Operating Loss Carryforwards, Portion Estimated to Expire before Utilization	528,000		528,000
Operating Loss Carryforwards, Valuation Allowance, Total	$ 133,867		$ 133,867
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%	28.06%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			$ 204,247
Effective Income Tax Rate Reconciliation, Percent, Total			32.01%	37.63%
Unrecognized Tax Benefits, Ending Balance	$ 0		$ 0