Investments in Unconsolidated Real Estate Joint Ventures (Equity Investments In Unconsolidated Real Estate Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures	$ 7,437	$ 1,354
Altis at Kendall Square, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures	1,298	1,300	1,300
New Urban/BBX Development, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures	2,368	54
Sunrise and Bayview Partners, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures	1,800
PGA Design Center Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated real estate joint ventures	$ 1,971