Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Current Assets: [Abstract]
Creditable taxes (value added taxes)	$ 14,323	$ 18,124
Vendor inventory deposits (prepaid)	9,607	9,483
Prepaid income taxes	6,581	12,658
Deferred income taxes	12,142	12,647
Prepaid Insurance	739	2,109
Other	2,956	5,114
Other Assets, Current	$ 46,348	$ 60,135