Business Segment and Geographic Area Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Other Revenue, Net	$ 134,486	$ 146,516	$ 302,739	$ 284,833
United States [Member]
Segment Reporting Information [Line Items]
Other Revenue, Net	107,504	87,729	225,416	162,697
Latin America [Member]
Segment Reporting Information [Line Items]
Other Revenue, Net	1,383	24,097	14,588	57,268
Canada [Member]
Segment Reporting Information [Line Items]
Other Revenue, Net	10,371	12,987	24,331	24,683
Australia & New Zealand [Member]
Segment Reporting Information [Line Items]
Other Revenue, Net	7,125	11,493	19,734	22,406
Europe [Member]
Segment Reporting Information [Line Items]
Other Revenue, Net	$ 8,103	$ 10,210	$ 18,670	$ 17,779