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Note 1 - Summary of Significant Accounting Policies - Property, Plant and Equipment, Useful Life (Details)	12 Months Ended
	Dec. 31, 2022
Minimum [Member] | Building and Building Improvements [Member]
Property, plant and equipment, useful life (Year)	3 years
Minimum [Member] | Riverboats And Barges [Member]
Property, plant and equipment, useful life (Year)	5 years
Minimum [Member] | Furniture and Equipment [Member]
Property, plant and equipment, useful life (Year)	1 year
Maximum [Member] | Building and Building Improvements [Member]
Property, plant and equipment, useful life (Year)	40 years
Maximum [Member] | Riverboats And Barges [Member]
Property, plant and equipment, useful life (Year)	40 years
Maximum [Member] | Furniture and Equipment [Member]
Property, plant and equipment, useful life (Year)	12 years

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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X

- Details

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X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: