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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2013
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
 
Six Months Ended
 
June 30,
 
June 30,
 
2013
 
2012
 
2013
 
2012
Liabilities, beginning of period
$
162,468

 
$
123,520

 
$
164,280

 
$
128,330

Reserves provided
—

 
—

 
—

 
—

Payments
(8,047
)
 
(2,809
)
 
(9,859
)
 
(7,619
)
Liabilities, end of period
$
154,421

 
$
120,711

 
$
154,421

 
$
120,711
Summary of changes in warranty liability
Changes to warranty liabilities were as follows ($000’s omitted):
 
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2013
 
2012
 
2013
 
2012
Warranty liabilities, beginning of period
63,152

 
64,420

 
64,098

 
68,025

Reserves provided
10,687

 
11,570

 
20,757

 
19,421

Payments
(10,744
)
 
(11,839
)
 
(21,780
)
 
(23,360
)
Other adjustments
(1,181
)
 
213

 
(1,161
)
 
278

Warranty liabilities, end of period
61,914

 
64,364

 
61,914

 
64,364
Summary of changes in self-insurance liability
Changes in these liabilities were as follows ($000's omitted):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2013
 
2012
 
2013
 
2012
Balance, beginning of period
$
717,024

 
$
736,130

 
$
721,284

 
$
739,029

Reserves provided
16,357

 
10,920

 
30,827

 
22,215

Payments
(25,239
)
 
(14,008
)
 
(43,969
)
 
(28,202
)
Balance, end of period
$
708,142

 
$
733,042

 
$
708,142

 
$
733,042