Annual report pursuant to Section 13 and 15(d)

SENIOR AND CONVERTIBLE SENIOR NOTES, NET - Schedule of Principal Maturities of Senior and Senior Convertible Notes (Details)

v3.8.0.1
SENIOR AND CONVERTIBLE SENIOR NOTES, NET - Schedule of Principal Maturities of Senior and Senior Convertible Notes (Details) - Senior Notes [Member] - Senior and senior convertible notes [Member]
$ in Thousands
Dec. 31, 2017
USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]  
2018 $ 175,000
2019 0
2020 300,000
2021 0
2022 300,000
Thereafter 500,000
Total $ 1,275,000