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OTHER ACCRUED LIABILITIES - Changes in Product Warranty Accrual (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Product Warranty Accrual [Roll Forward]    
Balance at beginning of period $ 22,575 $ 22,247
Provision for warranties issued in current year 973 1,948
Payments (1,203) (1,183)
Balance at end of period $ 22,345 $ 23,012