Segment Data (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments of company | segment	2
Net sales	$ 195,019	$ 147,162
Cost of sales	71,666	58,554
Gross margin	123,353	88,608
Research and development	47,018	26,381
TASER
Segment Reporting Information [Line Items]
Net sales	98,999	75,895
Cost of sales	32,945	30,248
Gross margin	66,054	45,647
Research and development	9,243	3,032
Software and Sensors
Segment Reporting Information [Line Items]
Net sales	96,020	71,267
Cost of sales	38,721	28,306
Gross margin	57,299	42,961
Research and development	37,775	23,349
Product
Segment Reporting Information [Line Items]
Net sales	140,886	107,288
Cost of sales	58,616	48,884
Product | TASER
Segment Reporting Information [Line Items]
Net sales	97,302	75,175
Cost of sales	32,945	30,248
Product | Software and Sensors
Segment Reporting Information [Line Items]
Net sales	43,584	32,113
Cost of sales	25,671	18,636
Service
Segment Reporting Information [Line Items]
Net sales	54,133	39,874
Cost of sales	13,050	9,670
Service | TASER
Segment Reporting Information [Line Items]
Net sales	1,697	720
Cost of sales	0	0
Service | Software and Sensors
Segment Reporting Information [Line Items]
Net sales	52,436	39,154
Cost of sales	$ 13,050	$ 9,670