Note 4 - Income Taxes - Reconciliation Between the Statutory Federal Income Tax Rate and the Company's Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Federal statutory rate	21.00%	21.00%
State taxes	6.90%	8.20%
Stock compensation	1.90%	(0.50%)
Nondeductible lobbying expenses	17.50%	3.80%
Other Nondeductible/Nontaxable Items	6.40%	1.20%
Other, net		(0.20%)
Effective tax rate	53.70%	33.50%