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WARRANTY COSTS AND OTHER CONTINGENCIES (Tables)
9 Months Ended
Sep. 30, 2019
WARRANTY COSTS AND OTHER CONTINGENCIES  
Schedule of analysis of warranty accruals

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(in thousands)

    

2019

    

2018

Balance at beginning of period

​

$

5,607

​

$

5,373

Less: Payments made during the period

​

 

(3,134)

​

 

(3,016)

Add: Warranty provision for the period

​

 

3,135

​

 

3,026

Changes to warranty provision for prior periods

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93

​

 

56

Balance at September 30

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$

5,701

​

$

5,439