Note 11 - Other Assets - Mortgage Loans and Other Financing Receivables (Details) $ in Millions	Dec. 31, 2023 USD ($)
Financing Receivable November 2026 [Member]
Face amount	$ 7.3
Interest rate	10.50%
Financing Receivable Maturing In April 24 [Member]
Face amount	$ 25.0
Interest rate	8.00%
Financing Receivable Maturing December 2024 [Member]
Face amount	$ 11.2
Interest rate	14.00%
Financing Receivable Maturing February 2024 [Member]
Face amount	$ 22.0
Interest rate	10.00%
Financing Receivable Maturing June 2025 [Member]
Face amount	$ 16.5
Interest rate	9.00%
Financing Receivable Maturing June 2029 [Member]
Face amount	$ 19.6
Interest rate	10.00%
Financing Receivable Maturing May 2029 [Member]
Face amount	$ 14.0
Interest rate	8.00%
Financing Receivable Maturing July 2022 [Member]
Face amount	$ 3.0
Interest rate	8.00%