Note 17 - Fair Value Disclosure of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

	December 31,
	2023				2022
	Carrying Amounts		Estimated Fair Value		Carrying Amounts		Estimated Fair Value
Assets:
Mortgage and other financing receivables (1)	$	130,745	$	122,323	$	87,359	$	87,359
Liabilities:
Notes payable, net (2)	$	7,262,851	$	6,671,450	$	6,780,969	$	5,837,401
Mortgages payable, net (3)	$	353,945	$	329,955	$	376,917	$	311,659

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	Balance at December 31, 2023		Level 1		Level 2		Level 3
Assets:
Marketable equity securities	$	330,057	$	330,057	$	-	$	-
Liabilities:
Embedded derivative liability	$	30,914	$	-	$	-	$	30,914

	Balance at December 31, 2022		Level 1		Level 2		Level 3
Assets:
Marketable equity securities	$	597,732	$	597,732	$	-	$	-
Liabilities:
Embedded derivative liability	$	56,000	$	-	$	-	$	56,000

	Balance at December 31, 2023		Level 1		Level 2		Level 3
Real estate	$	11,724	$	-	$	-	$	11,724

Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

		Fair Value of Embedded Derivative Liability
Balance as of January 1, 2023	$	56,000
Settlements		(22,446)
Change in fair value (included in Other income, net)		(734)
Change in fair value (included in Paid-in capital)		(1,906)
Balance as of December 31, 2023	$	30,914