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LONG-TERM DEBT AND LINES OF CREDIT - Maturities of Long-Term Debt (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Debt Disclosure [Abstract]  
2019 $ 80,087
2020 159,979
2021 195,848
2022 267,587
2023 4,006,053
2024 and thereafter 475,000
Total $ 5,184,554