Business Combinations (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended			0 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Feb. 29, 2012	Apr. 13, 2011 Palm Coast [Member]	Jun. 30, 2012 Shopping Center [Member] property
Business Combination, Separately Recognized Transactions [Line Items]
Business combination, effective date						April 13, 2011
Ownership percentage in joint ventures	75.00%		75.00%		47.80%	50.00%
Business combination, fair value discount rate						8.00%
Business combination, control obtained description						Effective April 13, 2011, we acquired our partner’s 50% interest in an unconsolidated joint venture related to a development property in Florida, which resulted in the consolidation of this property. Management has determined that this transaction qualified as a business combination to be accounted for under the acquisition method.
Business combination, valuation description						Fair value of assets acquired, liabilities assumed and equity interests was estimated using market-based measurements, including cash flow and other valuation techniques. The fair value measurement is based on both significant inputs for similar assets and liabilities in comparable markets and significant inputs that are not observable in the markets in accordance with our fair value measurements accounting policy. Key assumptions include third-party broker valuation estimates, discount rate of 8%, a terminal capitalization rate for similar properties, and factors that we believe market participants would consider in estimating fair value. The result of this transaction is included in our Condensed Consolidated Statements of Operations and Comprehensive Income beginning April 13, 2011.
Business combinaton, gain on acquisition	$ 0	$ 4,559	$ 0	$ 4,559
Number of operating properties acquired							2