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REVENUE RECOGNITION (Textual) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]    
Percentage Net Sales Over Time (less than) 10.00%  
Customer Advances, Current $ 17,914 $ 16,040
Billings in Excess of Cost, Current 15,377 16,274
Unbilled Contracts Receivable $ 32,223 $ 33,566