Segment Activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 19,010	$ 21,723	$ 53,844	$ 63,736
Operating loss	(41,546)	(10,401)	(67,500)	(32,809)
Total Assets	590,183		590,183		454,224
Corporate and Other
Segment Reporting Information [Line Items]
Operating loss	(3,552)	(3,576)	(12,479)	(11,659)
Total Assets	4,389		4,389		859
Nigeria
Segment Reporting Information [Line Items]
Revenues	19,010	21,723	53,844	63,736
Operating loss	(37,039)	(6,182)	(51,349)	(18,406)
Total Assets	582,104		582,104		449,856
Kenya
Segment Reporting Information [Line Items]
Operating loss	(614)	(426)	(2,689)	(2,091)
Total Assets	1,467		1,467		1,484
Gambia
Segment Reporting Information [Line Items]
Operating loss	(341)	(217)	(983)	(653)
Total Assets	$ 2,223		$ 2,223		$ 2,025