Revenues - Revenues By Products And Service Offerings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	$ 115,810	$ 101,215
TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	9,954	0
TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	15,872	16,474
TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	13,085	23,932
TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	670	1,346
Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	19,160	16,114
Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	6,445	5,558
Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,224	1,669
Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	3,516	2,116
Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	3,312	3,035
Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	27,654	20,241
TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	903	1,360
Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	9,246	6,196
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,769	3,174
TASER
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	65,391	63,524
TASER | TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	9,954	0
TASER | TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	15,872	16,474
TASER | TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	13,085	23,932
TASER | TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	670	1,346
TASER | Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	19,160	16,114
TASER | Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
TASER | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
TASER | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
TASER | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
TASER | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	36	0
TASER | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
TASER | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,316	3,706
TASER | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	2,298	1,952
Software and Sensors
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	50,419	37,691
Software and Sensors | TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
Software and Sensors | TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
Software and Sensors | TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
Software and Sensors | TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
Software and Sensors | Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0
Software and Sensors | Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	6,445	5,558
Software and Sensors | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,224	1,669
Software and Sensors | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	3,516	2,116
Software and Sensors | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	3,312	3,035
Software and Sensors | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	27,618	20,241
Software and Sensors | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	903	1,360
Software and Sensors | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,930	2,490
Software and Sensors | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	$ 2,471	$ 1,222