LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Senior Notes	$ 772,339	$ 1,079,187
Long-term Debt, Fair Value	735,675	1,016,077
2019 Euro Loan [Member]
Debt Instrument [Line Items]
Senior Notes	0	240,545
Long-term Debt, Fair Value	0	236,337
2021 Euro Loan [Member]
Debt Instrument [Line Items]
Senior Notes	240,296	281,871
Long-term Debt, Fair Value	233,058	268,858
2023 Euro Loan [Member]
Debt Instrument [Line Items]
Senior Notes	532,043	556,771
Long-term Debt, Fair Value	$ 502,617	$ 510,882