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OPERATING LEASES - Minimum Future Rentals from Noncancelable Operating Leases (Details)
$ in Thousands
Mar. 31, 2018
USD ($)
Leases [Abstract]  
2018 (nine months ending December 31, 2018) $ 130,747
2019 159,736
2020 139,343
2021 116,692
2022 97,455
Thereafter 241,894
Total $ 885,867