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Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Number of Reportable Segments	3
Number of Gaming Entertainment Properties, Open and Operating	27
Number of Gaming Entertainment Properties	28
Interest Costs Capitalized		$ 0.1	$ 0.1
Debt Instrument, Face Amount	$ 17.8
Debt Security Interest Rate Stated Percentage	7.50%
Debt Securities, Available-for-Sale, Total	$ 13.7	15.8
Debt Securities, Available-for-Sale, Current	0.7	0.6
Debt Securities, Available-for-Sale, Noncurrent	13.0	15.2
Taxes, Other	718.8	676.8	388.0
Taxes Deposited Pursuant to the Online Collaborative Agreements	195.6	140.5	61.8
Advertising Expense	$ 18.7	$ 16.1	20.2
Nonrecurring Gain Related to Property Closures			$ 40.0
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	12 years
Host Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
Development Agreement [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years
Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years

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