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Commitments and Contingencies (Tables)
6 Months Ended
May 31, 2018
Commitments and Contingencies Disclosure [Abstract]  
Changes in the Warranty Liability
The changes in our warranty liability were as follows (in thousands):
 
Three Months Ended May 31,
 
Six Months Ended May 31,
 
2018
 
2017
 
2018
 
2017
Balance at beginning of period
$
71,845

 
$
57,710

 
$
69,798

 
$
56,682

Warranties issued
9,889

 
8,784

 
17,653

 
15,924

Payments
(5,330
)
 
(6,457
)
 
(11,047
)
 
(12,569
)
Balance at end of period
$
76,404

 
$
60,037

 
$
76,404

 
$
60,037

Schedule of Self-Insurance Liability
The changes in our self-insurance liability were as follows (in thousands):
 
Three Months Ended May 31,
 
Six Months Ended May 31,
 
2018
 
2017
 
2018
 
2017
Balance at beginning of period
$
180,695

 
$
159,882

 
$
177,695

 
$
158,584

Self-insurance expense (a)
4,309

 
3,598

 
8,710

 
8,238

Payments 
(1,277
)
 
(2,720
)
 
(2,642
)
 
(4,760
)
Adjustments (b)
(7,012
)
 
(4,255
)
 
(7,048
)
 
(5,557
)
Balance at end of period
$
176,715

 
$
156,505

 
$
176,715

 
$
156,505

(a)
These expenses are included in selling, general and administrative expenses and are largely offset by contributions from subcontractors participating in the wrap-up policy.
(b)
The amount for each period reflects changes in our self-insurance liability that were offset by changes in the receivable for estimated probable insurance and other recoveries to present our self-insurance liability on a gross basis.