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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]  
Schedule of Product Warranty Liability The following table summarizes the warranty activity for 2018, 2017 and 2016:
(In thousands)
 
2018
 
2017
 
2016
Warranty reserves, beginning of the year
 
$
5,956

 
$
6,281

 
$
7,844

Accruals for warranties issued during the year
 
4,596

 
5,528

 
6,439

Reductions related to pre-existing warranties
 
(3,730
)
 
(3,792
)
 
(5,611
)
Acquisitions (See Note 3)
 
249

 
—

 
—

Warranties paid
 
(1,293
)
 
(2,078
)
 
(2,372
)
Other (principally foreign currency translation)
 
(67
)
 
17

 
(19
)
Warranty reserves, end of the year
 
$
5,711

 
$
5,956

 
$
6,281