v3.19.3
LONG-TERM DEBT LIABILITIES - Debt Extinguishment and Net Interest Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Net Interest Expense        
Interest expense $ 25,203 $ 25,911 $ 76,190 $ 74,870
Amortization of deferred financing costs 755 798 2,227 2,389
Amortization of original issue discount of senior notes (678) (715) (2,248) (2,147)
Interest income and other investment income (24) (71) (749) (79)
Total net interest expense 25,256 25,923 75,420 75,033
Extinguishment of Debt [Line Items]        
Gains (Losses) on Extinguishment of Debt $ 0 $ 0 $ (1,781) $ 0