Note 15 - Fair Value Disclosure of Financial Instruments (Details) - Financial Instruments: Estimate of Fair Value Differs from Carrying Amounts (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Financial Instruments: Estimate of Fair Value Differs from Carrying Amounts [Abstract]
Marketable Securities (1)	$ 62,766		$ 36,541
Marketable Securities (1)	62,824	[1]	36,825	[1]
Notes Payable (2)	3,186,047		3,192,127
Notes Payable (2)	3,333,614	[2]	3,408,632	[2]
Mortgages Payable (3)	1,035,354		1,003,190
Mortgages Payable (3)	$ 1,083,801	[3]	$ 1,068,616	[3]

[1] As of December 31, 2013, $59.7 million of these assets' estimated fair value were classified within Level 1 of the fair value hierarchy and the remaining $3.1 million were classified within Level 3 of the fair value hierarchy.

[2] The Company determined that its valuation of these Notes payable was classified within Level 2 of the fair value hierarchy.

[3] The Company determined that its valuation of these liabilities was classified within Level 3 of the fair value hierarchy.