Note 15 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Nonrecurring [Member]
Real estate held-for-sale	$ 1,598	$ 11,724
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Real estate held-for-sale	0	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Real estate held-for-sale	0	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Real estate held-for-sale	1,598	11,724
Fair Value, Recurring [Member]
Marketable equity securities	2,737	330,057
Interest rate swaps derivative assets	6,459
Embedded Derivative, Fair Value of Embedded Derivative Liability	32,209	30,914
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Marketable equity securities	2,737	330,057
Interest rate swaps derivative assets	0
Embedded Derivative, Fair Value of Embedded Derivative Liability	0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Marketable equity securities	0
Interest rate swaps derivative assets	6,459
Embedded Derivative, Fair Value of Embedded Derivative Liability	0	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Marketable equity securities	0	0
Interest rate swaps derivative assets	0
Embedded Derivative, Fair Value of Embedded Derivative Liability	$ 32,209	$ 30,914