Satellite Network and Other Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Apr. 27, 2021	Mar. 31, 2021	Mar. 31, 2020
Property Plant And Equipment [Line Items]
Depreciation and amortization expense		$ 12,232	$ 13,364
non-cash impairment charge		6,656
Products and Services and Internal-use Software [Member]
Property Plant And Equipment [Line Items]
Company capitalized internal costs attributable to design, development and enhancements of Company's products and services and internal-use software		3,419	3,486
Fixed Assets [Member]
Property Plant And Equipment [Line Items]
Depreciation and amortization expense		9,064	10,180
Fixed Assets [Member] | Service [Member]
Property Plant And Equipment [Line Items]
Depreciation and amortization expense related to cost of services and cost of product sales		4,387	4,279
Fixed Assets [Member] | Product [Member]
Property Plant And Equipment [Line Items]
Depreciation and amortization expense related to cost of services and cost of product sales		351	510
Internal-use Software [Member]
Property Plant And Equipment [Line Items]
Amortization of internal-use software		954	$ 739
Satellite Network and Other Equipment [Member]
Property Plant And Equipment [Line Items]
Net book value		(13,187)
Accumulated depreciation		$ 6,531
Satellite Network and Other Equipment [Member] | Subsequent Event [Member]
Property Plant And Equipment [Line Items]
non-cash impairment charge	$ 6,656