Note 10 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Notes Tables

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

	September 30 , 201 6				December 31, 201 5
	Carrying Amounts		Estimated Fair Value		Carrying Amounts		Estimated Fair Value
Marketable securities (1)	$	8,141	$	8,141	$	7,565	$	7,564
Notes payable (2)	$	3,786,921	$	3,922,026	$	3,761,328	$	3,820,205
Mortgages payable (3)	$	1,213,120	$	1,229,655	$	1,614,982	$	1,629,760

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

	Balance at September 30, 2016		Level 1		Level 2		Level 3
Assets:
Marketable equity securities	$	6,542	$	6,542	$	-	$	-
Liabilities:
Interest rate swaps (1)	$	1,858	$	-	$	1,858	$	-

	Balance at December 31, 201 5		Level 1		Level 2		Level 3
Assets:
Marketable equity securities	$	5,909	$	5,909	$	-	$	-
Liabilities:
Interest rate swaps (1)	$	1,426	$	-	$	1,426	$	-

	Balance at September 30, 2016		Level 1		Level 2		Level 3
Real estate	$	93,030	$	-	$	-	$	93,030

	Balance at December 31, 201 5		Level 1		Level 2		Level 3
Real estate	$	52,439	$	-	$	-	$	52,439