Revenues - Schedule Of Contract Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Current	$ 154,731	$ 117,864
Long-Term	87,733	87,936
Total	242,464	205,800
TASER
Disaggregation of Revenue [Line Items]
Current	29,610	22,578
Long-Term	28,039	32,611
Total	57,649	55,189
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	125,121	95,286
Long-Term	59,694	55,325
Total	184,815	150,611
Warranty
Disaggregation of Revenue [Line Items]
Current	25,595	22,568
Long-Term	18,807	21,534
Total	44,402	44,102
Warranty | TASER
Disaggregation of Revenue [Line Items]
Current	13,267	12,716
Long-Term	14,824	16,378
Total	28,091	29,094
Warranty | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	12,328	9,852
Long-Term	3,983	5,156
Total	16,311	15,008
Hardware
Disaggregation of Revenue [Line Items]
Current	42,846	31,804
Long-Term	52,567	49,227
Total	95,413	81,031
Hardware | TASER
Disaggregation of Revenue [Line Items]
Current	15,621	9,569
Long-Term	12,124	15,468
Total	27,745	25,037
Hardware | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	27,225	22,235
Long-Term	40,443	33,759
Total	67,668	55,994
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	86,290	63,492
Long-Term	16,359	17,175
Total	102,649	80,667
Software and Sensors | TASER
Disaggregation of Revenue [Line Items]
Current	722	293
Long-Term	1,091	765
Total	1,813	1,058
Software and Sensors | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	85,568	63,199
Long-Term	15,268	16,410
Total	$ 100,836	$ 79,609