Deferred Revenue - Summary of Deferred Revenue (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	$ 38,974	$ 35,688
Current portion of deferred revenue	16,249	14,020
Deferred revenue, net of current portion	22,725	21,668
Warranty
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	22,856	21,973
Current portion of deferred revenue	8,186	7,270
Deferred revenue, net of current portion	14,670	14,703
AXON services
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	9,230	9,286
Current portion of deferred revenue	6,145	5,717
Deferred revenue, net of current portion	3,085	3,569
Hardware equipment
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	6,586	4,252
Current portion of deferred revenue	1,616	856
Deferred revenue, net of current portion	4,970	3,396
Other
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	302	177
Current portion of deferred revenue	302	177
Deferred revenue, net of current portion	0	0
TASER Weapons
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	21,805	21,695
Current portion of deferred revenue	7,975	7,133
Deferred revenue, net of current portion	13,830	14,562
TASER Weapons | Warranty
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	19,479	20,400
Current portion of deferred revenue	6,722	6,591
Deferred revenue, net of current portion	12,757	13,809
TASER Weapons | Hardware equipment
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	2,024	1,118
Current portion of deferred revenue	951	365
Deferred revenue, net of current portion	1,073	753
Axon
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	17,169	13,993
Current portion of deferred revenue	8,274	6,887
Deferred revenue, net of current portion	8,895	7,106
Axon | Warranty
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	3,377	1,573
Current portion of deferred revenue	1,464	679
Deferred revenue, net of current portion	1,913	894
Axon | Hardware equipment
Deferred Revenue Arrangement [Line Items]
Total deferred revenue	4,562	3,134
Current portion of deferred revenue	665	491
Deferred revenue, net of current portion	$ 3,897	$ 2,643