Valuation and Qualifying Accounts and Reserves (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Valuation And Qualifying Accounts And Reserves (Textual) [Abstract]
Loan loss reserves	$ 5,000,000		$ 5,400,000
Bloomfield LLC [Member]
Valuation and Qualifying Accounts and Reserves
Impairment charge			66,900,000
Construction Loan Joint Venture [Member]
Valuation and Qualifying Accounts and Reserves
Impairment charge	1,600,000
Allowance for Uncollectible Accounts [Member]
Valuation and Qualifying Accounts and Reserves
Balance at Beginning of Year	36,794,000	43,763,000	39,008,000
Charged to (Income) Expense	14,631,000	13,588,000	21,218,000
Deductions	(18,134,000)	(20,557,000)	(16,463,000)
Balance at End of Year	33,291,000	36,794,000	43,763,000
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts and Reserves
Balance at Beginning of Year	58,322,000	0
Charged to (Income) Expense		58,322,000
Deductions	(715,000)
Balance at End of Year	$ 57,607,000	$ 58,322,000