Note 4 - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Vacation accrual	$ 60,500	$ 55,700
Player rewards program accrual	112,200	166,900
Stock options	149,000	86,200
Long-Term Incentive Plan	38,100	32,500
Lease obligations	13,200	20,600
Charitable contribution carryovers	0	15,300
State net operating loss	0	374,000
Other	5,685	15,500
Total net deferred tax assets	378,685	766,700
Land, building and equipment - cost and depreciation	(4,341,400)	(4,381,600)
Investment in joint ventures	(3,202,500)	(3,387,200)
Prepaid Expenses	(125,500)	(144,900)
TIF receivable accrued interest	(380,300)	(200,700)
Total net deferred tax liabilities	(8,049,700)	(8,114,400)
Net long-term deferred tax liabilities	$ (7,671,015)	$ (7,347,700)