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CONTINGENT LIABILITIES AND COMMITMENTS (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Changes in warranty reserve    
Balance, Beginning of Period $ 9,174  
Provision for warranty claims 1,921 $ 1,100
Warranties acquired through business combinations 611  
Warranty claims paid (1,942)  
Foreign currency translation adjustment 29  
Balance, End of Period $ 9,793