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Commitments and Contingencies Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2016
Warranty Accrual Rollforward [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
A summary of warranty activity for the three and six months ended June 30, 2016 and 2015 is as follows:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(In thousands)
2016
 
2015
 
2016
 
2015
Warranty reserves, beginning of period
$
15,295

 
$
11,551

 
$
14,281

 
$
12,671

Warranty expense on homes delivered during the period
2,482

 
2,044

 
4,522

 
3,583

Changes in estimates for pre-existing warranties
2,108

 
413

 
4,946

 
676

Settlements made during the period
(4,070
)
 
(3,370
)
 
(7,934
)
 
(6,292
)
Warranty reserves, end of period
$
15,815

 
$
10,638

 
$
15,815

 
$
10,638