Real Estate - Portfolio (Remaining Funding Commitments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Real Estate Investments [Abstract]
Number of Properties with Funding Commitments	54
Total Commitment	$ 158,725	[1]
Amount Funded	103,614
Remaining Commitment	$ 55,111

[1] Includes land and construction costs.