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COMMITMENTS AND CONTINGENCIES (Commitments Due) (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Property, Plant and Equipment [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
2020 $ 27,724
Thereafter 0
Total 27,724
Noncapital [Member]  
Recorded Unconditional Purchase Obligation [Line Items]  
2020 24,157
2021-2022 8,759
2023–2024 15,600
Thereafter 0
Total $ 48,516