Investment in Unconsolidated Joint Ventures Investment in Unconsolidated Joint Ventures Income Statement Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity Method Investments and Joint Ventures [Abstract]
Revenue	$ 2,909	$ 0	$ 0
Costs and expenses	1,763	15	18
Income (loss)	$ 1,146	$ (15)	$ (18)