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NET SALES - Timing of revenue recognition (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of revenue:      
Net sales $ 298,014 $ 239,825 $ 292,136
Products transferred at point in time      
Disaggregation of revenue:      
Net sales 298,014 239,825 292,136
Products transferred over time      
Disaggregation of revenue:      
Net sales $ 0 $ 0 $ 0