Segment and Geographic Reporting - Schedule of Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 1,127,624	$ 1,066,609
Goodwill	102,581	102,581
All other assets	192,971	198,706
Total Assets	1,423,176	1,367,896
Reportable Segments | Colombia
Segment Reporting Information [Line Items]
Property, plant and equipment	1,054,136	939,947
Goodwill	102,581	102,581
All other assets	176,672	177,393
Total Assets	1,333,389	1,219,921
Reportable Segments | Peru
Segment Reporting Information [Line Items]
Property, plant and equipment	70,903	68,428
Goodwill	0	0
All other assets	11,103	10,848
Total Assets	82,006	79,276
Reportable Segments | Brazil
Segment Reporting Information [Line Items]
Property, plant and equipment	0	55,196
Goodwill	0	0
All other assets	0	1,619
Total Assets	0	56,815
All Other
Segment Reporting Information [Line Items]
Property, plant and equipment	2,585	3,038
Goodwill	0	0
All other assets	5,196	8,846
Total Assets	$ 7,781	$ 11,884