Note 10 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Real estate
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Real estate
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Real estate		93,030	52,439
Fair Value, Measurements, Nonrecurring [Member]
Real estate		93,030	52,439
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Marketable equity securities		6,542	5,909
Interest rate swaps (1)	[1]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Marketable equity securities
Interest rate swaps (1)	[1]	1,858	1,426
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Marketable equity securities
Interest rate swaps (1)	[1]
Fair Value, Measurements, Recurring [Member]
Marketable equity securities		6,542	5,909
Interest rate swaps (1)	[1]	$ 1,858	$ 1,426

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