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SEGMENT INFORMATION - Geographic Segments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales $ 195,375 $ 304,011
Long-Lived Assets 87,731 98,575
United States [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales 155,955 245,073
Long-Lived Assets 77,975 81,603
Canada [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales 17,730 22,285
Europe [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales 2,600 6,223
Australia [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales 15,252 22,459
Asia [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales 1,969 5,085
South Africa [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales 1,869 2,886
Other [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets $ 9,756 $ 16,972