Accrued Liabilities - Components of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Payables And Accruals [Abstract]
Accrued compensation and benefits	$ 7,866	$ 9,367
Accrued warranty obligations	5,922	5,624
Acquired customer product liabilities		546
Corporate income tax payable	3,385	1,521
Contingent consideration amount		2,063
VAT payable	1,963	2,286
Accrued satellite network and other equipment	227	227
Accrued inventory purchases	625	219
Accrued interest expense	10,000	5,000
Accrued professional fees	761	303
Accrued airtime charges	1,818	901
Short-term lease liability	2,791
Other accrued expenses	6,396	7,678
Total accrued liabilities	$ 41,754	$ 35,735