LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Debt Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt	$ 772,339	$ 1,079,187
Other credit facilities and capital leases	15,891	10,193
Total long-term debt and other financing arrangements	788,230	1,089,380
Less: current maturities	(5,545)	(3,269)
Total non-current long-term debt and other financing arrangements	$ 782,685	$ 1,086,111