Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT (Future Maturities of Long-Term Debt) (Details)

v3.8.0.1
LONG-TERM DEBT (Future Maturities of Long-Term Debt) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Maturities of Long-term Debt [Abstract]    
2018 $ 353,738  
2019 42,240  
2020 71,621  
2021 114,546  
2022 260,013  
Thereafter 1,495,834  
Total $ 2,337,992 $ 2,364,585