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WARRANTY COSTS AND OTHER CONTINGENCIES (Tables)
3 Months Ended
Mar. 31, 2020
WARRANTY COSTS AND OTHER CONTINGENCIES  
Schedule of analysis of warranty accruals

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(in thousands)

    

2020

    

2019

Balance at beginning of period

​

$

5,410

​

$

5,607

Less: Payments made during the period

​

 

(767)

​

 

(950)

Add: Warranty provision for the period

​

 

721

​

 

1,044

Changes to warranty provision for prior periods

​

 

50

​

 

65

Balance at March 31

​

$

5,414

​

$

5,766