Note 10 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Notes Tables

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

	June 30 , 201 6				December 31, 201 5
	Carrying Amounts		Estimated Fair Value		Carrying Amounts		Estimated Fair Value
Marketable securities (1)	$	7,006	$	7,060	$	7,565	$	7,564
Notes payable (2)	$	3,728,629	$	3,886,518	$	3,761,328	$	3,820,205
Mortgages payable (3)	$	1,460,188	$	1,448,438	$	1,614,982	$	1,629,760

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

	Balance at June 30, 2016		Level 1		Level 2		Level 3
Assets:
Marketable equity securities	$	5,350	$	5,350	$	-	$	-
Liabilities:
Interest rate swaps (1)	$	2,185	$	-	$	2,185	$	-

	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 June 30, 2016		Level 1		Level 2		Level 3
Real estate	$	59,980	$	-	$	-	$	59,980

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