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, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity Method Investments and Joint Ventures [Abstract]
Revenue	$ 2,424	$ 2,909	$ 0
Costs and expenses	1,147	1,763	15
Income (loss)	1,277	1,146	(15)
Equity in Income (loss) from unconsolidated joint ventures	$ 347	$ 347	$ (12)