Satellite Network and Other Equipment - Additional Information (Detail) $ in Thousands			1 Months Ended	3 Months Ended		12 Months Ended
	Sep. 15, 2014 USD ($)	Jul. 14, 2014 Satellite	Jun. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Property Plant And Equipment [Line Items]
Depreciation and amortization expense						$ 26,571	$ 10,856	$ 6,001
Accumulated depreciation						45,868	31,780
Non-cash impairment charge				$ 12,748		12,748	605
Satellite Network [Member]
Property Plant And Equipment [Line Items]
Impairment loss on asset							605
Accumulated depreciation							1,477
Accumulated depreciation on equipment							872
OG2 Satellite Procurement [Member]
Property Plant And Equipment [Line Items]
Depreciation and amortization expense						15,371	8,061	4,616
Number of satellites | Satellite		6
Internal-use Software [Member]
Property Plant And Equipment [Line Items]
Company capitalized costs attributable to the design and development of internal-use software						4,958	2,777	1,754
Internal-use Software [Member] | OG2 Satellite Procurement [Member]
Property Plant And Equipment [Line Items]
Amortization of internal-use software						$ 1,733	969	$ 611
Next-generation OG2 Satellites [Member]
Property Plant And Equipment [Line Items]
Number of satellites | Satellite		6
Reclassification of costs out of assets under construction into satellite network	$ 82,725
Satellites, life in years	10 years					10 years
Depreciation						$ 6,957	$ 2,431
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			13,788
Non-cash impairment charge			12,748	$ 12,748
Accumulated depreciation on equipment			$ 1,040			$ 1,040