Note 11 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Fair Value, Measurements, Recurring [Member]
Assets:
Marketable equity securities		$ 10,533	$ 87,659
Liabilities:
Interest rate swaps	[1]	1,879	1,404
Fair Value, Measurements, Nonrecurring [Member]
Liabilities:
Real estate		23,838	80,270
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Marketable equity securities		$ 10,533	$ 87,659
Liabilities:
Interest rate swaps	[1]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Interest rate swaps	[1]	$ 1,879	$ 1,404
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Liabilities:
Interest rate swaps	[1]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Liabilities:
Real estate		$ 23,838	$ 80,270

[1] Included in Other liabilities on the Company's Condensed Consolidated Balance Sheets