LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Long-term Debt, Current and Noncurrent [Abstract]
Carrying Value of Senior Debt	$ 999,209	$ 906,028
Other credit facilities and capital leases	4,313	3,648
Total long-term debt and other financing arrangements	1,003,522	909,676
Less: current maturities	(1,494)	(1,155)
Long-term debt and other financing arrangements	1,002,028	$ 908,521
Long-term Debt, Fiscal Year Maturity [Abstract]
2015	0
2016	264,368
2017	248,067
2018	0
2019	494,162
2020 and thereafter	0
Total long-debt and credit facilities	1,006,597
Debt issuance costs	(7,388)
Carrying amount of long-debt and credit facilities	$ 999,209