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OTHER CURRENT LIABILITIES (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Other Liabilities Disclosure [Abstract]    
Accrued employee compensation $ 37,992 $ 46,508
Customer deposits 33,082 31,216
Warranty 8,890 8,906
Contingent payout 1,100 7,100
Other 20,539 21,044
Other current liabilities $ 101,603 $ 114,774