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Additional Financial Information Disclosures (Tables)
 9 Months Ended
Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]  
Changes in Warranty and After-Sale Costs Reserve Changes in the Company’s warranty and after-sale costs reserve are as follows:

 

  

 

Three months ended

September 30,

 

 

Nine months ended

September 30,

 

(In thousands)

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Balance at beginning of period

 

$

6,421

 

 

$

5,379

 

 

$

5,583

 

 

$

4,206

 

Net additions charged to earnings

 

 

2,077

 

 

 

3,124

 

 

 

4,470

 

 

 

5,405

 

Costs incurred

 

 

(941

)

 

 

(1,696

)

 

 

(2,496

)

 

 

(2,804

)

Balance at end of period

 

$

7,557

 

 

$

6,807

 

 

$

7,557

 

 

$

6,807