Segment Data - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Segment	Sep. 30, 2015 USD ($)
Segment Reporting [Abstract]
Number of reportable segments of company | Segment			2
Segment Reporting Information [Line Items]
Product sales	$ 63,204	$ 47,265	$ 167,745	$ 133,863
Service revenue	8,678	3,111	18,423	7,988
Net sales	71,882	50,376	186,168	141,851
Cost of products sold	23,664	18,274	61,172	47,497
Cost of services delivered	1,653	1,034	4,230	2,695
Gross margin	46,565	31,068	120,766	91,659
Sales, general and administrative	28,121	17,834	77,333	47,842
Research and development	7,358	6,528	20,995	16,992
Income from operations	11,086	6,706	22,438	26,825
Purchase of property and equipment	1,371	2,069	3,335	3,839
Purchase of intangible assets	154	201	339	402
Purchase of property and equipment and intangible assets in connection with business acquisition	0	3,005	0	12,599
Depreciation and amortization	901	948	2,744	2,310
Operating Segments | TASER Weapons
Segment Reporting Information [Line Items]
Product sales	52,938	39,520	144,307	115,686
Service revenue	0	0	0	0
Net sales	52,938	39,520	144,307	115,686
Cost of products sold	14,973	12,445	43,998	34,805
Cost of services delivered	0	0	0	0
Gross margin	37,965	27,075	100,309	80,881
Sales, general and administrative	16,439	11,941	46,395	33,469
Research and development	1,408	1,151	3,773	3,418
Income from operations	20,118	13,983	50,141	43,994
Purchase of property and equipment	1,064	1,900	2,729	2,345
Purchase of intangible assets	77	114	190	195
Purchase of property and equipment and intangible assets in connection with business acquisition	0	1,453	0	1,453
Depreciation and amortization	537	603	1,669	1,689
Operating Segments | Axon
Segment Reporting Information [Line Items]
Product sales	10,266	7,745	23,438	18,177
Service revenue	8,678	3,111	18,423	7,988
Net sales	18,944	10,856	41,861	26,165
Cost of products sold	8,691	5,829	17,174	12,692
Cost of services delivered	1,653	1,034	4,230	2,695
Gross margin	8,600	3,993	20,457	10,778
Sales, general and administrative	11,682	5,893	30,938	14,373
Research and development	5,950	5,377	17,222	13,574
Income from operations	(9,032)	(7,277)	(27,703)	(17,169)
Purchase of property and equipment	307	169	606	1,404
Purchase of intangible assets	77	87	149	207
Purchase of property and equipment and intangible assets in connection with business acquisition	0	1,452	0	11,146
Depreciation and amortization	$ 364	$ 345	$ 1,075	$ 621