Note 12 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

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

	March 31, 2013				December 31, 2012
	Carrying Amounts		Estimated Fair Value		Carrying Amounts		Estimated Fair Value
Marketable securities (1)	$	76,786	$	77,082	$	36,541	$	36,825
Notes payable (2)	$	3,337,420	$	3,561,819	$	3,192,127	$	3,408,632
Mortgages payable (3)	$	1,113,653	$	1,197,711	$	1,003,190	$	1,068,616

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

	Balance at March 31, 2013		Level 1		Level 2		Level 3
Marketable equity securities	$	73,783	$	73,783	$	-	$	-

	Balance at December 31, 2012		Level 1		Level 2		Level 3
Marketable equity securities	$	33,428	$	33,428	$	-	$	-

	Balance at March 31, 2013		Level 1		Level 2		Level 3
Real estate	$	14,706	$	-	$	-	$	14,706

	Balance at December 31, 2012		Level 1		Level 2		Level 3
Real estate	$	52,505	$	-	$	-	$	52,505