Satellite Network and Other Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 4,005		$ 1,401	$ 7,851	$ 2,738
Non-cash impairment charge	(12,748)			(12,748)
Internal-use Software [Member]
Property, Plant and Equipment [Line Items]
Company capitalized costs attributable to the design and development of internal-use software				1,770	1,405
Amortization of internal-use software	408		$ 224	$ 784	$ 410
Satellite Network [Member]
Property, Plant and Equipment [Line Items]
Removal/decrease in satellite network and other equipment		$ 137
In-orbit OG2 Satellites One [Member]
Property, Plant and Equipment [Line Items]
Removal/decrease in satellite network and other equipment	13,788
Non-cash impairment charge	12,748
Accumulated depreciation on equipment	$ 1,040