Note 15 - Fair Value Disclosure of Financial Instruments (Details) - Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	$ 59,723	$ 33,428
Real estate	217,529	52,505
Joint venture investments	59,693
Other real estate investments	2,050
Cost method investment	4,670
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	59,723	33,428
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate	217,529	52,505
Joint venture investments	59,693
Other real estate investments	2,050
Cost method investment	$ 4,670