Deferred Revenue - Summary of Deferred Revenue (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	$ 31,668	$ 20,851
Deferred revenue, Long-Term	35,098	30,190
Total deferred revenue	66,766	51,041
Warranty
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	12,216	9,610
Deferred revenue, Long-Term	17,614	16,326
Total deferred revenue	29,830	25,936
Hardware
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	7,703	1,738
Deferred revenue, Long-Term	13,973	9,841
Total deferred revenue	21,676	11,579
AXON services
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	11,373	9,303
Deferred revenue, Long-Term	3,511	4,023
Total deferred revenue	14,884	13,326
Other
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	376	200
Deferred revenue, Long-Term	0	0
Total deferred revenue	376	200
TASER Weapons
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	10,662	8,430
Deferred revenue, Long-Term	18,307	16,441
Total deferred revenue	28,969	24,871
TASER Weapons | Warranty
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	9,185	7,278
Deferred revenue, Long-Term	14,991	13,982
Total deferred revenue	24,176	21,260
TASER Weapons | Hardware
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	1,101	952
Deferred revenue, Long-Term	3,316	2,459
Total deferred revenue	4,417	3,411
Axon
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	21,006	12,421
Deferred revenue, Long-Term	16,791	13,749
Total deferred revenue	37,797	26,170
Axon | Warranty
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	3,031	2,332
Deferred revenue, Long-Term	2,623	2,344
Total deferred revenue	5,654	4,676
Axon | Hardware
Deferred Revenue Arrangement [Line Items]
Deferred revenue, Current	6,602	786
Deferred revenue, Long-Term	10,657	7,382
Total deferred revenue	$ 17,259	$ 8,168