SEGMENT INFORMATION (Summary of Net Sales and Long-Lived Assets By Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net sales and long-lived asset information by geographic area
Net Sales	$ 538,868	$ 589,729	$ 619,999	$ 582,338	$ 546,773	$ 586,290	$ 594,275	$ 589,811	$ 2,330,934	$ 2,317,149	$ 2,597,809
Plant, Property & Equipment	784,321				765,383				784,321	765,383	811,655
United States
Net sales and long-lived asset information by geographic area
Net Sales									619,814	633,522	642,060
Plant, Property & Equipment	175,578				175,367				175,578	175,367	192,265
Total Europe
Net sales and long-lived asset information by geographic area
Net Sales									1,329,398	1,287,309	1,506,992
Plant, Property & Equipment	488,977				440,266				488,977	440,266	471,426
France
Net sales and long-lived asset information by geographic area
Net Sales									695,727	712,470	850,817
Plant, Property & Equipment	228,082				216,966				228,082	216,966	228,049
Germany
Net sales and long-lived asset information by geographic area
Net Sales									386,553	326,782	363,898
Plant, Property & Equipment	154,588				125,186				154,588	125,186	136,491
Italy
Net sales and long-lived asset information by geographic area
Net Sales									126,890	125,511	141,808
Plant, Property & Equipment	51,732				43,631				51,732	43,631	48,940
Other Europe
Net sales and long-lived asset information by geographic area
Net Sales									120,228	122,546	150,469
Plant, Property & Equipment	54,575				54,483				54,575	54,483	57,946
Other Foreign Countries
Net sales and long-lived asset information by geographic area
Net Sales									381,722	396,318	448,757
Plant, Property & Equipment	$ 119,766				$ 149,750				$ 119,766	$ 149,750	$ 147,964