CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017		Jun. 30, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net income (loss)	$ (17,571)	$ 2,930	$ 40,893		$ (195,872)
Other comprehensive income, net of tax
Net gain from foreign currency translation	70,220	13,222	92,884		161,891
Retirement and postretirement benefit plans	2,386	2,513	4,773		5,029
Deferred loss on interest rate hedges reclassified to interest expense	481	481	963		963
Other comprehensive income	73,087	16,216	98,620	[1]	167,883
COMPREHENSIVE INCOME (LOSS)	$ 55,516	$ 19,146	$ 139,513		$ (27,989)

[1] All amounts are presented net of income taxes.