Revenues - Revenues by Product and Services Offerings (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales	$ 171,851	$ 130,837	$ 112,362	$ 115,810	$ 114,791	$ 104,836	$ 99,226	$ 101,215	$ 530,860	$ 420,068	$ 343,798
TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									56,652	7,358
TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									52,524	70,638
TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									55,920	78,837
TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									4,089	5,182
Cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									85,987	68,258
Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									44,039	21,883
Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									5,928	6,509
Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									16,182	12,527
Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									20,449	10,706
Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									130,969	90,291
TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									3,104	3,871
Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									37,262	27,613
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									17,755	16,395
TASER
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									281,661	253,115	234,512
TASER | TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									56,652	7,358
TASER | TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									52,524	70,638
TASER | TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									55,920	78,837
TASER | TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									4,089	5,182
TASER | Cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									85,987	68,258
TASER | Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
TASER | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
TASER | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
TASER | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
TASER | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales										0
TASER | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
TASER | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									18,074	15,753
TASER | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									7,711	7,089
Software and Sensors
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									249,199	166,953	$ 109,286
Software and Sensors | TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
Software and Sensors | TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
Software and Sensors | TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
Software and Sensors | TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
Software and Sensors | Cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									0	0
Software and Sensors | Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									44,039	21,883
Software and Sensors | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									5,928	6,509
Software and Sensors | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									16,182	12,527
Software and Sensors | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									20,449	10,706
Software and Sensors | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									130,265	90,291
Software and Sensors | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									3,104	3,871
Software and Sensors | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									19,188	11,860
Software and Sensors | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net sales									$ 10,044	$ 9,306