LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Debt (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt		$ 1,079,187	$ 999,209
Other credit facilities and capital leases		9,487	3,427
Total long-term debt and other financing arrangements		1,088,674	1,002,636
Less: current maturities		(2,960)	(1,228)
Total non-current long-term debt and other financing arrangements		1,085,714	1,001,408
Long-term Debt, Fiscal Year Maturity [Abstract]
2018	[1]	240,819
2019		282,238
2020		0
2021		562,232
2022		0
2023 and thereafter		0
Total long-debt and credit facilities		1,085,289
Debt issuance costs		(12,947)	$ (15,019)
Carrying amount of long-debt and credit facilities		1,079,187
Senior Debt and Credit Facilities [Member]
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt		1,079,187
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt issuance costs	[2]	$ (6,102)

[1] (1) On February 5, 2018, we entered into an amendment to extend the maturity date of the 2018 Euro Term Loan from November 1, 2018 to May 1, 2019. On February 6, 2018, we paid EUR 50.0 million (approximately US$ 61.6 million as at February 6, 2018 rates) of the outstanding principal balance of the 2018 Euro Term Loan (see Note 24, "Subsequent Events").

[2] (1) Debt issuance costs related to the 2018 Euro Term Loan, 2019 Euro Term Loan and 2021 Euro Term Loan are being amortized on a straight-line basis, which approximates the effective interest method, over the life of the respective instruments. Debt issuance costs related to the 2021 Revolving Credit Facility are classified as non-current assets in our consolidated balance sheet and are being amortized on a straight-line basis over the life of the 2021 Revolving Credit Facility.