Investments in Unconsolidated Affiliated Entities (Company's Investments in Unconsolidated Affiliated Entities) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Apr. 12, 2011
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliated entities	$ 3,994	$ 5,950
Brownmill, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Date of Acquisition	Various
Ownership interest	48.60%		10.00%
Investments in unconsolidated affiliated entities	3,991	4,076
LVP Rego Park, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Date of Ownership	Apr. 12, 2011
Ownership interest	10.00%
Investments in unconsolidated affiliated entities	$ 3	$ 1,874