v3.10.0.1
LONG-TERM DEBT LIABILITIES - Debt Extinguishment and Net Interest Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Net Interest Expense      
Interest expense $ 101,497 $ 31,266 $ 33,799
Amortization of deferred financing costs 3,189 2,333 2,585
Amortization of original issue discount of senior notes (2,862) (962) 312
Interest income and other investment income (703) (116) (57)
Total net interest expense 101,121 32,521 36,639
Extinguishment of Debt [Line Items]      
Gains (Losses) on Extinguishment of Debt $ 0 $ (4,135) $ 10,858