Segment Data (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments of company \| segment	2
Net sales	$ 147,162	$ 115,810
Cost of sales	58,554	46,893
Gross margin	88,608	68,917
Research and development	26,381	23,354
TASER
Segment Reporting Information [Line Items]
Net sales	75,895	65,391
Cost of sales	30,248	23,278
Gross margin	45,647	42,113
Research and development	3,032	3,712
Software and Sensors
Segment Reporting Information [Line Items]
Net sales	71,267	50,419
Cost of sales	28,306	23,615
Gross margin	42,961	26,804
Research and development	23,349	19,642
Product
Segment Reporting Information [Line Items]
Net sales	107,288	88,089
Cost of sales	48,884	39,600
Product \| TASER
Segment Reporting Information [Line Items]
Net sales	75,175	65,301
Cost of sales	30,248	23,278
Product \| Software and Sensors
Segment Reporting Information [Line Items]
Net sales	32,113	22,788
Cost of sales	18,636	16,322
Service
Segment Reporting Information [Line Items]
Net sales	39,874	27,721
Cost of sales	9,670	7,293
Service \| TASER
Segment Reporting Information [Line Items]
Net sales	720	90
Cost of sales	0	0
Service \| Software and Sensors
Segment Reporting Information [Line Items]
Net sales	39,154	27,631
Cost of sales	$ 9,670	$ 7,293

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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