RETIREMENT ANNUITY AND GUARANTEED CONTINUOUS EMPLOYMENT PLANS (Components of Pension Cost for Defined Benefit Plans) (Details) - USD ($) $ in Thousands		3 Months Ended					12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components of Pension Cost for Defined Benefit Plan
Settlement/curtailment loss		$ 1,696	$ 4,232	$ 758	$ 2,867	$ 5,283
VENEZUELA
Components of Pension Cost for Defined Benefit Plan
Amortization of net loss									$ 959
Foreign Plan [Member]
Components of Pension Cost for Defined Benefit Plan
Service cost							$ 3,252	$ 2,678	2,215
Interest cost							3,703	3,253	2,902
Expected return on plan assets							(5,057)	(4,270)	(4,034)
Amortization of prior service cost							1	15	18
Amortization of net loss	[1]						2,211	1,881	2,176
Settlement/curtailment loss	[2]						(397)	102	0
Pension cost for defined benefit plans	[3]						3,713	3,659	3,277
United States
Components of Pension Cost for Defined Benefit Plan
Service cost							139	608	15,474
Interest cost							18,084	19,497	20,676
Expected return on plan assets							(27,052)	(31,530)	(31,682)
Amortization of prior service cost							0	0	(412)
Amortization of net loss	[1]						1,498	2,133	7,717
Settlement/curtailment loss	[2]						6,686	8,150	(1,062)
Pension cost for defined benefit plans	[3]						$ (645)	$ (1,142)	$ 10,711

[1] The amortization of net loss includes a $959 charge resulting from the deconsolidation of the Venezuelan subsidiary during the year ended December 31, 2016.

[2] Pension settlement charges for the years ended December 31, 2018 and 2017 resulting from lump sum pension payments.

[3] The decrease in pension cost for defined benefit plans for the years ended December 31, 2018 and 2017 was due to the U.S. plan freeze effective December 31, 2016.