Revenues - Revenues By Products And Service Offerings (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	$ 104,836	$ 90,262	$ 305,277	$ 249,147
TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	17,998	13,264	52,618	45,167
TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	20,392	22,717	62,686	57,755
TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,402	1,069	3,849	2,892
Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	18,406	17,474	51,763	49,005
Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,744	4,527	15,082	11,725
Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,325	2,563	4,529	7,889
Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,809	1,113	6,640	1,113
Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	2,178	2,639	7,332	7,409
Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	23,915	16,200	64,513	40,698
TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	717	922	2,839	2,407
Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	7,284	5,031	20,088	13,902
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,666	2,743	13,338	9,185
TASER Weapons
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	63,666	59,416	187,814	170,103
TASER Weapons | TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	17,998	13,264	52,618	45,167
TASER Weapons | TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	20,392	22,717	62,686	57,755
TASER Weapons | TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,402	1,069	3,849	2,892
TASER Weapons | Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	18,406	17,474	51,763	49,005
TASER Weapons | Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER Weapons | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER Weapons | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER Weapons | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER Weapons | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER Weapons | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER Weapons | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,123	3,086	11,567	8,920
TASER Weapons | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,345	1,806	5,331	6,364
Software and Sensors
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	41,170	30,846	117,463	79,044
Software and Sensors | TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
Software and Sensors | TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	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	0	0
Software and Sensors | Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
Software and Sensors | Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,744	4,527	15,082	11,725
Software and Sensors | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,325	2,563	4,529	7,889
Software and Sensors | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,809	1,113	6,640	1,113
Software and Sensors | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	2,178	2,639	7,332	7,409
Software and Sensors | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	23,915	16,200	64,513	40,698
Software and Sensors | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	717	922	2,839	2,407
Software and Sensors | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	3,161	1,945	8,521	4,982
Software and Sensors | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	$ 3,321	$ 937	$ 8,007	$ 2,821