Investment In Unconsolidated Joint Ventures (Income Or Loss From Unconsolidated Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Investments in Unconsolidated Joint Ventures [Line Items]
Income (loss) from Unconsolidated Joint Ventures	$ 148	$ 414	$ (248)	$ (316)
Loss from Remeasurement of Investment in Unconsolidated Joint Venture		(224)		(224)
Income (loss) from Unconsolidated Joint Venture Investments	148	190	(248)	(540)
SB Partners, LLC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Income (loss) from Unconsolidated Joint Ventures	119	27	2	(95)
Hiren Boston, LLC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Income (loss) from Unconsolidated Joint Ventures	119	242	(50)	104
Mystic Partners, LLC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Income (loss) from Unconsolidated Joint Ventures	(90)	(98)	(200)	(211)
Metro 29th Street Associates, LLC [Member]
Investments in Unconsolidated Joint Ventures [Line Items]
Income (loss) from Unconsolidated Joint Ventures		$ 243		$ (114)