Revenues - Summary of Deferred Revenue (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Current	$ 163,959	$ 117,864
Long-Term	111,222	87,936
Total	275,181	205,800
TASER Weapons
Disaggregation of Revenue [Line Items]
Current	28,945	22,578
Long-Term	32,811	32,611
Total	61,756	55,189
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	135,014	95,286
Long-Term	78,411	55,325
Total	213,425	150,611
Warranty
Disaggregation of Revenue [Line Items]
Current	25,561	22,568
Long-Term	21,978	21,534
Total	47,539	44,102
Warranty | TASER Weapons
Disaggregation of Revenue [Line Items]
Current	11,635	12,716
Long-Term	16,953	16,378
Total	28,588	29,094
Warranty | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	13,926	9,852
Long-Term	5,025	5,156
Total	18,951	15,008
Hardware
Disaggregation of Revenue [Line Items]
Current	41,495	31,804
Long-Term	65,285	49,227
Total	106,780	81,031
Hardware | TASER Weapons
Disaggregation of Revenue [Line Items]
Current	16,314	9,569
Long-Term	14,304	15,468
Total	30,618	25,037
Hardware | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	25,181	22,235
Long-Term	50,981	33,759
Total	76,162	55,994
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	96,903	63,492
Long-Term	23,959	17,175
Total	120,862	80,667
Software and Sensors | TASER Weapons
Disaggregation of Revenue [Line Items]
Current	996	293
Long-Term	1,554	765
Total	2,550	1,058
Software and Sensors | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	95,907	63,199
Long-Term	22,405	16,410
Total	$ 118,312	$ 79,609