Accrued Liabilities - Components of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Accrued compensation and benefits	$ 8,827	$ 7,751
Accrued warranty obligations	6,064	6,526
Corporate income tax payable	871	2,341
VAT payable	2,747	2,614
Accrued satellite network and other equipment	751	247
Accrued inventory purchases	273	448
Accrued interest expense	10,000	5,000
Accrued professional fees	373	329
Accrued airtime charges	1,750	1,818
Short-term lease liability	2,765	2,608
Other accrued expenses	7,238	7,269
Total accrued liabilities	$ 41,659	$ 36,951