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REVENUE AND LONG-LIVED ASSETS - Net Sales and Long Lived Assets by Region (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales $ 203,140 $ 195,467 $ 222,346 $ 197,213 $ 179,968 $ 195,690 $ 176,888 $ 159,160 $ 818,166 $ 711,706 $ 615,101
Long - Lived Assets 103,994       94,469       103,994 94,469 89,247
North America                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales                 697,002 574,806 527,134
Long - Lived Assets 97,650       90,036       97,650 90,036 85,707
Foreign                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales                 121,164 136,900 87,967
Long - Lived Assets $ 6,344       $ 4,433       $ 6,344 $ 4,433 $ 3,540