Note 12 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

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

	March 31, 2022				December 31, 2021
	Carrying Value		Fair Value		Carrying Value		Fair Value
Notes payable, net (1)	$	7,110,804	$	6,875,691	$	7,027,050	$	7,330,723
Mortgages payable, net (2)	$	378,644	$	361,700	$	448,652	$	449,758

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

	Balance at March 31, 2022		Level 1		Level 2		Level 3
Marketable equity securities	$	1,334,873	$	1,334,873	$	-	$	-

	Balance at December 31, 2021		Level 1		Level 2		Level 3
Marketable equity securities	$	1,211,739	$	1,211,739	$	-	$	-

	Balance at December 31, 2021		Level 1		Level 2		Level 3
Other investments	$	9,834	$	-	$	-	$	9,834