Note 4 - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Vacation accrual	$ 82,300	$ 47,600
Player rewards program accrual	94,800	116,800
Stock-based compensation expense	160,200	135,900
Other	1,700	2,785
Net deferred tax assets	339,000	303,085
Land, building and equipment - cost and depreciation	(5,523,200)	(5,352,900)
Investment in equity investments	(3,468,100)	(4,314,400)
Prepaid expenses	(231,600)	(169,500)
TIF receivable accrued interest	(962,100)	(766,300)
Net deferred tax liabilities	(10,185,000)	(10,603,100)
Net long-term deferred tax liabilities	$ (9,846,000)	$ (10,300,015)