Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Acquired Finite Lived Intangible Assets [Line Items]
Additions through acquisitions		$ 72,528	$ 19,952
Estimated Useful life (years)		10 years 3 months 18 days
Impairment charge		$ 564
Amortization of intangible assets		$ 10,636	2,795	$ 1,385
Customer Lists [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years 6 months
Patents and Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		9 years 3 months 18 days
Trade Names and Trademarks [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		7 years 3 months 18 days
SkyWave Mobile Communications Inc. [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Additions through acquisitions		$ 56,511
Increase (decrease) in goodwill		$ (969)
SkyWave Mobile Communications Inc. [Member] | Customer Lists [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years
SkyWave Mobile Communications Inc. [Member] | Trademarks [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		5 years
SkyWave Mobile Communications Inc. [Member] | Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years
Insync, Inc [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Additions through acquisitions		$ 5,491
WAM Technologies, LLC [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Additions through acquisitions		$ 10,526
WAM Technologies, LLC [Member] | Trademarks [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		2 years
WAM Technologies, LLC [Member] | Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years
Euroscan Holding B.V. [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Additions through acquisitions			19,952
Increase (decrease) in goodwill			674
Euroscan Holding B.V. [Member] | Customer Lists [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		12 years
Euroscan Holding B.V. [Member] | Trademarks [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years
Euroscan Holding B.V. [Member] | Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years
GlobalTrak [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Adjustment in goodwill and warrant liability due to acquisition	$ 250		250
Increase (decrease) in goodwill	$ (167)		$ (167)
GlobalTrak [Member] | Customer Lists [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		5 years
GlobalTrak [Member] | Trademarks [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		5 years
GlobalTrak [Member] | Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years
SENS [Member] | Customer Lists [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		7 years
Fair value of intangible assets		$ 280
SENS [Member] | Trademarks [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		3 years
Fair value of intangible assets		$ 0
SENS [Member] | Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful life (years)		10 years
Fair value of intangible assets		$ 30