Real Estate (Held for Sale) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013 properties	Mar. 31, 2013 properties	Dec. 31, 2012
Real Estate [Abstract]
Properties categorized as held for sale	10	15
Land and improvements	$ 10,591		$ 10,445
Building and improvements	17,935		17,773
Accounted for using the direct financing method	464		525
Work in process	0		72
Real Estate Held-for-sale	28,990		28,815
Real Estate Investment Property, Accumulated Depreciation	(2,033)		(1,997)
Less impairment	(10,165)		(8,119)
Inventory, Real Estate, Held-for-sale	$ 16,792		$ 18,699