Revenues - Schedule Of Contract Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Current	$ 250,651	$ 163,959
Long-Term	111,892	111,222
Total	362,543	275,181
TASER
Disaggregation of Revenue [Line Items]
Current	41,100	28,945
Long-Term	22,323	32,811
Total	63,423	61,756
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	209,551	135,014
Long-Term	89,569	78,411
Total	299,120	213,425
Warranty
Disaggregation of Revenue [Line Items]
Current	33,768	25,561
Long-Term	29,613	21,978
Total	63,381	47,539
Warranty | TASER
Disaggregation of Revenue [Line Items]
Current	14,332	11,635
Long-Term	10,763	16,953
Total	25,095	28,588
Warranty | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	19,436	13,926
Long-Term	18,850	5,025
Total	38,286	18,951
Hardware
Disaggregation of Revenue [Line Items]
Current	62,173	41,495
Long-Term	52,233	65,285
Total	114,406	106,780
Hardware | TASER
Disaggregation of Revenue [Line Items]
Current	24,775	16,314
Long-Term	9,252	14,304
Total	34,027	30,618
Hardware | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	37,398	25,181
Long-Term	42,981	50,981
Total	80,379	76,162
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	154,710	96,903
Long-Term	30,046	23,959
Total	184,756	120,862
Software and Sensors | TASER
Disaggregation of Revenue [Line Items]
Current	1,993	996
Long-Term	2,308	1,554
Total	4,301	2,550
Software and Sensors | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	152,717	95,907
Long-Term	27,738	22,405
Total	$ 180,455	$ 118,312