Mortgage Loans On Real Estate (Summary Of Changes In Mortgage Loans) (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended							0 Months Ended
	Apr. 30, 2010 jvs	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Feb. 29, 2012	Apr. 13, 2011 Palm Coast [Member]
Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance, Beginning of Year		$ 159,916		$ 192,092		$ 267,222
New Loans		0		0		4,912
Additions to Existing Loans		734	[1]	4,161	[1]	11,961	[1]
Collections/Reductions of Principal		(68,988)		(14,464)		(20,124)
Reduction of Principal due to Business Combination		0	[2]	(21,873)	[2]	(71,879)	[2]
Balance, End of Year		$ 91,662		$ 159,916		$ 192,092
Ownership percentage in joint ventures	50.00%	75.00%						47.80%	50.00%
Business combination, effective date	Apr. 01, 2010								Apr. 13, 2011
Number of unconsolidated real estate joint ventures with partner	2

[1] The caption above, “Additions to Existing Loans” also includes accrued interest.

[2] Effective April 13, 2011, we acquired our partner’s 50% interest in an unconsolidated real estate joint venture related to a development property in Palm Coast, Florida. Effective April 1, 2010, we assumed control of two 50%-owned unconsolidated real estate joint ventures related to a development project in Sheridan, Colorado, which had previously been accounted for under the equity method. The notes associated with these transactions are reported as a reduction in the preceding table for the respective years. For 2011, see Note 23 for additional information.