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Basis Of Presentation And Significant Accounting Policies (Narrative) (Details) (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Dec. 31, 2011
Unfunded settlements $ 19,300,000   $ 13,000,000
Lease exit and related costs 4,749,000 (51,000)  
Earnings attributable to restricted shareholders 0 0  
Number of VIEs requiring consolidation 0   0
Land, not owned, under option agreements 26,121,000   24,905,000
Liabilities for land, not owned, under option agreements 26,121,000   24,905,000
Residential mortgage loans available-for-sale 184,164,000   258,075,000
Residential mortgage loans available-for-sale aggregate outstanding principal balance 177,500,000   248,200,000
Net gain (loss) from change in fair value 500,000 500,000  
Net gains from the sale of mortgages 19,000,000 12,800,000  
Servicing rights recognized 4,700,000 4,900,000  
Interest rate lock commitments, face value 137,200,000   97,600,000
Unexpired cash forward contracts 277,000,000   311,500,000
Whole loan investor commitments 1,700,000   1,600,000
Minimum [Member]
      
Period of Reimbursement of Payments on Loan Prepay in Days 90    
Maximum [Member]
      
Period of Reimbursement of Payments on Loan Prepay in Days 120    
Variability in future cash flows of derivative instruments in days 60    
Financial Services [Member]
      
Lease exit and related costs $ 2,400,000