Note 12 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

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

	June 30, 2019				December 31, 2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Notes payable, net (1)	$	4,420,370	$	4,484,767	$	4,381,456	$	4,126,450
Mortgages and construction loan payable, net (2)	$	485,132	$	487,889	$	492,416	$	486,341

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

	Balance at June 30, 2019		Level 1		Level 2		Level 3
Marketable equity securities	$	10,665	$	10,665	$	-	$	-

	Balance at December 31, 2018		Level 1		Level 2		Level 3
Marketable equity securities	$	9,045	$	9,045	$	-	$	-

	Balance at June 30, 2019		Level 1		Level 2		Level 3
Real estate	$	78,700	$	-	$	-	$	78,700

	Balance at December 31, 2018		Level 1		Level 2		Level 3
Real estate	$	99,693	$	-	$	-	$	99,693
Investments in real estate joint ventures (1)	$	62,429	$	-	$	-	$	62,429