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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]  
Schedule of Product Warranty Liability
The following table summarizes the warranty activity for 2014, 2013 and 2012:
(In thousands)
 
2014
 
2013
 
2012
Warranty reserves, beginning of the year
 
$
9,548

 
$
9,092

 
$
5,596

Accruals for warranties issued during the year
 
3,208

 
5,016

 
7,935

Reductions related to pre-existing warranties
 
(2,680
)
 
(1,966
)
 
(2,401
)
Warranties paid
 
(1,186
)
 
(2,573
)
 
(1,958
)
Other (principally foreign currency translation)
 
(4
)
 
(21
)
 
(80
)
Warranty reserves, end of the year
 
$
8,886

 
$
9,548

 
$
9,092