Goodwill, Regulatory Authorizations and Other Intangible Assets (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Cost
Balance at the beginning of the period	$ 360,835
Balance at the end of the period	361,300
Accumulated amortization
Balance at the beginning of the period	(280,101)
Balance at the end of the period	(294,984)
Net
Balance at the beginning of the period	80,734
Balance at the end of the period	66,316
Total regulatory authorizations, net
Balance at the beginning of the period	544,633
Additions	(2,396)
Currency Translation Adjustment	2,073
Balance at the end of the period	544,310
Indefinite Lives
Indefinite lives
Balance at the beginning of the period	471,657
Balance at the end of the period	471,657
Finite lives
Cost
Balance at the beginning of the period	87,959
Currency Translation Adjustment	2,809
Balance at the end of the period	90,768
Accumulated amortization
Balance at the beginning of the period	(14,983)
Additions	(2,396)
Currency Translation Adjustment	(736)
Balance at the end of the period	(18,115)
Net
Balance at the beginning of the period	72,976
Additions	(2,396)
Currency Translation Adjustment	2,073
Balance at the end of the period	$ 72,653