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Product Warranty (Tables)
 9 Months Ended
Aug. 31, 2018
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Reserve The activity in the Company’s warranty reserve was as follows:
 
Three Months Ended
 
Nine Months Ended
 
August 31,
 
August 31,
(In thousands)
2018
 
2017
 
2018
 
2017
Warranty reserve, beginning of the period
$
294,710

 
151,833

 
164,619

 
135,403

Warranties issued
48,878

 
28,795

 
121,422

 
78,945

Adjustments to pre-existing warranties from changes in estimates (1)
(4,785
)
 
4,436

 
5,310

 
14,769

Warranties assumed related to acquisitions
(5
)
 
—

 
117,549

 
6,345

Payments
(40,575
)
 
(25,758
)
 
(110,677
)
 
(76,156
)
Warranty reserve, end of period
$
298,223

 
159,306

 
298,223

 
159,306


(1)
The adjustments to pre-existing warranties from changes in estimates during the three and nine months ended August 31, 2018 and 2017 primarily related to specific claims related to certain of the Company's homebuilding communities and other adjustments.