Segment Information Revenues and Operating Net Assets by Geographical Areas (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Net Assets	$ 1,351,830	$ 1,039,270	$ 883,760
Continuing Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	1,499,080	1,388,600	1,267,510
Operating Net Assets	1,351,830	1,039,270	883,760
Continuing Operations [Member] | Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	120,690	97,500	62,400
Operating Net Assets	97,670	136,490	102,250
Continuing Operations [Member] | AUSTRALIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	88,820	97,580	100,620
Operating Net Assets	38,700	27,080	32,400
Continuing Operations [Member] | Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	46,810	44,870	32,230
Operating Net Assets	92,470	59,120	38,130
Continuing Operations [Member] | Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	8,800	3,310	4,180
Operating Net Assets	4,290	4,770	3,090
Continuing Operations [Member] | Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	45,950	46,210	34,090
Operating Net Assets	$ 53,780	$ 83,080	$ 68,660