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Product Warranties (Tables)
12 Months Ended
Dec. 31, 2016
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
The following table represents changes in the Company’s consolidated warranty reserve:
 
Year Ended December 31,
 
2016
 
2015
 
2014
Beginning balance
$
20,975

 
$
24,246

 
$
33,827

Warranty expense
9,962

 
16,705

 
14,463

Warranty usage
(12,666
)
 
(19,976
)
 
(24,044
)
Ending balance
$
18,271

 
$
20,975

 
$
24,246