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WARRANTY COSTS AND OTHER CONTINGENCIES (Tables)
6 Months Ended
Jun. 30, 2017
WARRANTY COSTS AND OTHER CONTINGENCIES  
Schedule of analysis of warranty accruals
(in thousands) 2017  2016 
Balance at beginning of period $4,629  $3,405 
Less: Payments made during the period  (1,345)  (1,428)
Add: Warranty provision for the period  1,796   1,375 
Changes to warranty provision for prior periods  60   1 
Balance at June 30 $5,140  $3,353