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COMMITMENTS (Future Minimum Payments) (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Commitments  
Remaining 2019 $ 3,955
2020 1,061
2021 134
2022 3
2023 0
Thereafter 0
Commitments, total 5,153
Development Projects  
Commitments  
Remaining 2019 1,742
2020 0
2021 0
2022 0
2023 0
Thereafter 0
Commitments, total 1,742
Pension Contributions  
Commitments  
Remaining 2019 884
2020 442
2021 0
2022 0
2023 0
Thereafter 0
Commitments, total 1,326
Commitments  
Commitments  
Remaining 2019 1,329
2020 619
2021 134
2022 3
2023 0
Thereafter 0
Commitments, total $ 2,085