Revenues - Revenues By Products And Service Offerings (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	$ 130,837	$ 104,836	$ 359,009	$ 305,277
TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	20,214	0	39,466	0
TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	11,578	17,998	37,832	52,618
TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	13,241	20,392	40,413	62,686
TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,132	1,402	2,920	3,849
Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	18,901	18,406	57,354	51,763
Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	6,763	4,744	18,820	15,082
Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,670	1,325	4,517	4,529
Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,341	1,809	10,977	6,640
Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	3,358	2,178	9,401	7,332
Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	34,240	23,915	93,824	64,513
TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	534	717	2,481	2,839
Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	9,257	7,284	27,405	20,088
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	5,608	4,666	13,599	13,338
TASER
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	71,743	63,666	197,706	187,814
TASER | TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	20,214	0	39,466	0
TASER | TASER X26P
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	11,578	17,998	37,832	52,618
TASER | TASER X2
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	13,241	20,392	40,413	62,686
TASER | TASER Pulse and Bolt
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,132	1,402	2,920	3,849
TASER | Single cartridges
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	18,901	18,406	57,354	51,763
TASER | Axon Body
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	218	0	363	0
TASER | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
TASER | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,543	4,123	13,341	11,567
TASER | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,916	1,345	6,017	5,331
Software and Sensors
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	59,094	41,170	161,303	117,463
Software and Sensors | TASER 7
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	0	0	0	0
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	6,763	4,744	18,820	15,082
Software and Sensors | Axon Flex
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	1,670	1,325	4,517	4,529
Software and Sensors | Axon Fleet
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,341	1,809	10,977	6,640
Software and Sensors | Axon Dock
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	3,358	2,178	9,401	7,332
Software and Sensors | Axon Evidence and cloud services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	34,022	23,915	93,461	64,513
Software and Sensors | TASER Cam
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	534	717	2,481	2,839
Software and Sensors | Extended warranties
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	4,714	3,161	14,064	8,521
Software and Sensors | Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue from contract with customers	$ 3,692	$ 3,321	$ 7,582	$ 8,007