Other Current Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Other Current Assets [Abstract]
Value Added Tax Receivables	$ 19,044	$ 19,699
Recoverable Income Taxes	2,375	2,465
Derivative Assets	780	789
Prepaid Insurance	1,258	4,556
Prepaid Expense and Other Current Assets	15,144	13,663
Other current assets	$ 38,601	$ 41,172