Quarterly report pursuant to Section 13 or 15(d)

SENIOR NOTES, NET - Schedule of Senior Notes, Net (Details)

v3.19.1
SENIOR NOTES, NET - Schedule of Senior Notes, Net (Details) - Senior Notes [Member] - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Net debt issuance costs $ (10,168) $ (10,745)
Senior notes, net 1,295,515 1,295,284
7.15% senior notes due 2020 [Member]    
Debt Instrument [Line Items]    
Senior notes, gross $ 300,569 $ 300,711
Stated interest rate 7.15% 7.15%
Unamortized premium $ 569 $ 711
7.00% senior notes due 2022 [Member]    
Debt Instrument [Line Items]    
Senior notes, gross $ 300,000 $ 300,000
Stated interest rate 7.00% 7.00%
6.00% senior notes due 2025 [Member]    
Debt Instrument [Line Items]    
Senior notes, gross $ 405,114 $ 405,318
Stated interest rate 6.00% 6.00%
Unamortized premium $ 5,114 $ 5,318
5.125% senior notes due 2027 [Member]    
Debt Instrument [Line Items]    
Senior notes, gross $ 300,000 $ 300,000
Stated interest rate 5.125% 5.125%