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Commitments And Contingencies (Tables)
 3 Months Ended
Mar. 31, 2012
Commitments and Contingencies Disclosure [Abstract]  
Summary of changes in loan origination liability
Changes in these liabilities were as follows ($000's omitted):
 
Three Months Ended
 
March 31,
 
2012
 
2011
Liabilities, beginning of period
$
128,330

 
$
93,057

Provision for losses
—

 
—

Settlements
(4,810
)
 
(10,597
)
Liabilities, end of period
$
123,520

 
$
82,460
Summary of changes in warranty liability
Changes to warranty liabilities were as follows ($000’s omitted):
 
 
Three Months Ended
 
March 31,
 
2012
 
2011
Warranty liabilities, beginning of period
$
68,025

 
$
80,195

Warranty reserves provided
7,851

 
9,089

Payments
(11,521
)
 
(14,007
)
Other adjustments
65

 
(623
)
Warranty liabilities, end of period
$
64,420

 
$
74,654
Summary of changes in self-insurance liability
Changes in these liabilities were as follows ($000's omitted):
 
Three Months Ended
 
March 31,
 
2012
 
2011
Balance, beginning of period
$
741,383

 
$
785,562

Reserves provided
12,978

 
14,924

Payments
(14,337
)
 
(25,734
)
Balance, end of period
$
740,024

 
$
774,752