Note 9 - Financial Instruments: Estimate of Fair Value Differs from Carrying Amounts (Details) - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Marketable Securities	[1]	$ 5,716	$ 7,565
Marketable securities (1)	[1]	5,771	7,564
Notes payable (2)	[2]	3,660,666	3,761,328
Notes payable (2)	[2]	3,750,443	3,820,205
Mortgages payable (3)	[3]	1,501,796	1,614,982
Long-term Debt, Fair Value	[3]	$ 1,521,165	$ 1,629,760

[1] As of March 31, 2016 and December 31, 2015, the Company determined that $4.1 million and $5.9 million, respectively, of the Marketable securities estimated fair value were classified within Level 1 of the fair value hierarchy and the remaining $1.7 million and $1.7 million, respectively, were classified within Level 3 of the fair value hierarchy.

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

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