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DEBT (Other Textual) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Long-term Debt, Fiscal Year Maturity [Abstract]      
2021 $ 111    
2022 109    
2023 10,609    
2024 0    
2025 200,000    
Thereafter 500,000    
Total interest paid 26,332 $ 24,950 $ 23,790
Amounts due banks $ 2,623 $ 34,857  
Weighted average interest rates of borrowings under the Credit Agreement and borrowings of foreign subsidiaries (as a percent) 17.90% 4.90%