Note 8 - Leases (Details Textual) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Operating Lease, Weighted Average Remaining Lease Term (Year)	9 years
Operating Lease, Weighted Average Discount Rate, Percent	6.56%
Deferred Lease Revenue [Member]
Deferred Rent Receivables, Net	$ 7	$ 6
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Lessor, Operating Lease, Term of Contract (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	99 years
Lessor, Operating Lease, Term of Contract (Year)	15 years

Amount of excess of rental income recognized over rental payment required by lease.

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Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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