Segment Data (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments of company | segment			2
Net sales	$ 141,259	$ 112,362	$ 288,421	$ 228,172
Cost of sales	53,082	46,802	111,636	93,695
Gross margin	88,177	65,560	176,785	134,477
Research and development	29,560	23,493	55,941	46,847
TASER
Segment Reporting Information [Line Items]
Net sales	70,490	60,572	146,385	125,963
Cost of sales	27,242	24,262	57,490	47,540
Gross margin	43,248	36,310	88,895	78,423
Research and development	3,762	3,087	6,794	6,799
Software and Sensors
Segment Reporting Information [Line Items]
Net sales	70,769	51,790	142,036	102,209
Cost of sales	25,840	22,540	54,146	46,155
Gross margin	44,929	29,250	87,890	56,054
Research and development	25,798	20,406	49,147	40,048
Product
Segment Reporting Information [Line Items]
Net sales	98,755	80,391	206,043	168,480
Cost of sales	43,825	38,220	92,709	77,820
Product | TASER
Segment Reporting Information [Line Items]
Net sales	69,877	60,423	145,052	125,724
Cost of sales	27,242	24,262	57,490	47,540
Product | Software and Sensors
Segment Reporting Information [Line Items]
Net sales	28,878	19,968	60,991	42,756
Cost of sales	16,583	13,958	35,219	30,280
Service
Segment Reporting Information [Line Items]
Net sales	42,504	31,971	82,378	59,692
Cost of sales	9,257	8,582	18,927	15,875
Service | TASER
Segment Reporting Information [Line Items]
Net sales	613	149	1,333	239
Cost of sales	0	0
Service | Software and Sensors
Segment Reporting Information [Line Items]
Net sales	41,891	31,822	81,045	59,453
Cost of sales	$ 9,257	$ 8,582	$ 18,927	$ 15,875