Notes Receivable From Real Estate Joint Ventures And Partnerships (Details) (USD $)	1 Months Ended		12 Months Ended
	Dec. 31, 2013	Feb. 29, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 23, 2013	Nov. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate on notes receivable - range minimum			2.90%	2.90%
Interest rate on notes receivable - range maximum			5.70%	16.00%
Notes due through various dates			Jun. 30, 2017
Allowance for uncollectible notes receivable	$ 0		$ 0	$ 0
Interest income on notes receivable			2,200,000	3,000,000	3,400,000
Ownership percentage in joint ventures	50.00%		50.00%	75.00%		50.00%
Notes receivable settlement	54,800,000
Notes receivable from real estate joint ventures and partnerships	16,100,000		16,100,000				16,100,000
Proceeds received for notes receivable		59,200,000	19,411,000	75,081,000	15,687,000
Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds received for notes receivable			$ 16,100,000