Real Estate (Commitments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013 properties
Real Estate [Abstract]
Real estate investment, number of properties	51
Real estate investment, funding commitments	$ 147,084	[1]
Real estate investment, amount funded	109,852
Real estate investment, remaining commitment	$ 37,232

[1] Includes land, construction costs and tenant improvements.