Axon Enterprise (AXON) 10-Q5 Nov 142014 Q3 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2014	Oct. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Entity Registrant Name	'TASER INTERNATIONAL INC	'
Entity Central Index Key	'0001069183	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	52,516,777

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current Assets:	'	'
Cash and cash equivalents	$38,615	$42,271
Short-term investments	28,983	9,101
Accounts and notes receivable, net of allowance of $253 and $200 as of September 30, 2014 and December 31, 2013, respectively	27,099	22,488
Inventory, net	16,128	11,109
Prepaid expenses and other current assets	5,210	5,397
Deferred income tax assets, net	7,164	7,101
Total current assets	123,199	97,467
Property and equipment, net of accumulated depreciation of $33,046 and $31,378 as of September 30, 2014 and December 31, 2014, respectively	17,848	19,043
Deferred income tax assets, net	9,603	13,679
Intangible assets, net	3,107	3,317
Goodwill	2,206	2,235
Long-term investments	6,411	12,023
Other assets	1,766	618
Total assets	164,140	148,382
Current Liabilities:	'	'
Accounts payable	6,483	6,221
Accrued liabilities	6,853	8,840
Current portion of deferred revenue	10,033	6,878
Customer deposits	369	1,154
Current portion of capital lease payable	38	36
Total current liabilities	23,776	23,129
Deferred revenue, net of current portion	19,966	13,341
Liability for unrecognized tax benefits	1,409	3,122
Other long-term liabilities	908	376
Long-term portion of capital lease payable	39	67
Total liabilities	46,098	40,035
Commitments and Contingencies (Note 10)	'	'
Stockholders' Equity	'	'
Preferred stock, $0.00001 par value per share; 25 million shares authorized; no shares issued at September 30, 2014 and December 31, 2013	'	'
Common stock, $0.00001 par value per share; 200 million shares authorized; 52,516,219 and 52,725,247 shares issued and outstanding at September 30, 2014 and December 31, 2013, respectively	1	1
Additional paid-in capital	156,729	139,424
Treasury stock at cost, 18,139,958 and 16,412,755 shares at September 30, 2014 and December 31, 2013, respectively	-114,645	-92,203
Retained earnings	75,959	61,127
Accumulated other comprehensive loss	-2	-2
Total stockholders' equity	118,042	108,347
Total liabilities and stockholders' equity	$164,140	$148,382

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]	'	'
Allowance on accounts receivable	$253	$200
Property and equipment, accumulated depreciation	$33,046	$31,378
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	52,516,219	52,725,247
Common stock, shares outstanding	52,516,219	52,725,247
Treasury stock, shares	18,139,958	16,412,755

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations and Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Net sales	$44,349	$35,197	$117,709	$97,806
Cost of products sold and services delivered	15,636	13,101	43,574	37,517
Gross margin	28,713	22,096	74,135	60,289
Sales, general and administrative expenses	12,441	12,776	39,734	34,898
Research and development expenses	3,759	2,439	10,820	6,444
Income from operations	12,513	6,881	23,581	18,947
Interest and other income (expense), net	-160	35	-88	31
Income before provision for income taxes	12,353	6,916	23,493	18,978
Provision for income taxes	4,795	1,802	8,661	6,109
Net income	7,558	5,114	14,832	12,869
Income per common and common equivalent shares	'	'	'	'
Basic	$0.14	$0.10	$0.28	$0.25
Diluted	$0.14	$0.10	$0.27	$0.24
Weighted average number of common and common equivalent shares outstanding	'	'	'	'
Basic	52,475	51,342	53,013	51,727
Diluted	53,821	53,321	54,550	53,644
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	'	'	'	'
Net income	7,558	5,114	14,832	12,869
Foreign currency translation adjustments	-15	92	'	29
Comprehensive income	$7,543	$5,206	$14,832	$12,898

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash Flows from Operating Activities:	'	'
Net income	$14,832	$12,869
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	3,368	4,036
Loss (gain) on disposal of property and equipment, net	17	-29
Loss on write-down / disposal of intangible assets, net	211	113
Bond premium amortization	675	174
Provision for doubtful accounts	143	2
Provision for excess and obsolete inventory	20	279
Provision for warranty	517	644
Stock-based compensation expense	4,121	2,906
Deferred income taxes	9,862	5,212
Unrecognized tax benefits	-1,713	172
Excess tax benefit from stock-based compensation	-5,849	-4,058
Change in assets and liabilities:	'	'
Accounts and notes receivable	-4,754	-1,994
Inventory	-5,039	-1,575
Prepaid expenses and other assets	-1,063	-2,243
Accounts payable and accrued liabilities	-1,705	-496
Deferred revenue	9,780	6,497
Customer deposits	-785	578
Net cash provided by operating activities	22,638	23,087
Cash Flows from Investing Activities:	'	'
Purchases of investments	-23,613	-18,450
Proceeds from call / maturity of investments	8,668	6,625
Purchases of property and equipment	-2,066	-1,174
Proceeds from disposal of fixed assets	10	34
Purchases of intangible assets	-125	-271
Net cash used in investing activities	-17,126	-13,236
Cash Flows from Financing Activities:	'	'
Repurchase of common stock	-22,442	-25,000
Proceeds from options exercised	8,597	10,219
Payroll tax payments for net-settled stock awards	-1,262	-221
Excess tax benefit from stock-based compensation	5,849	4,058
Payments on capital lease obligation	-26	-25
Net cash used in financing activities	-9,284	-10,969
Effect of exchange rate change on cash and cash equivalents	116	-3
Net decrease in cash and cash equivalents	-3,656	-1,121
Cash and cash equivalents, beginning of period	42,271	36,127
Cash and cash equivalents, end of period	38,615	35,006
Supplemental Disclosure:	'	'
Cash paid for income taxes-net	403	2,427
Non-Cash Transactions:	'	'
Property and equipment purchases in accounts payable	$158	$59

Organization_and_Summary_of_Si

Organization and Summary of Significant Accounting Policies	9 Months Ended
Organization and Summary of Significant Accounting Policies	Sep. 30, 2014
Accounting Policies [Abstract]	'
Organization and Summary of Significant Accounting Policies	'
	1. Organization and Summary of Significant Accounting Policies
	TASER International, Inc. (the “Company” or “TASER”) is a developer and manufacturer of advanced conducted electrical weapons (“CEWs”) designed for use in law enforcement, federal, military, corrections, private security and personal defense. In addition, the Company has developed full technology solutions for the capture, storage and management of video/audio evidence as well as other tactical capabilities for use in law enforcement. The Company sells its products worldwide through its direct sales force, distribution partners, online store and third-party resellers. The Company was incorporated in Arizona in September 1993, and reincorporated in Delaware in January 2001. The Company’s corporate headquarters and manufacturing facilities are located in Scottsdale, Arizona. The Company’s software development business unit facilities are located in Seattle, Washington.
	The accompanying condensed consolidated financial statements include the accounts of the Company, and its wholly owned subsidiaries, including TASER International Europe SE (“TASER Europe”). TASER Europe was established in 2009 to facilitate sales and provide customer service to our customers in the European region. All material intercompany accounts, transactions, and profits have been eliminated in consolidation.
	a. Basis of presentation, preparation and use of estimates
	These unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information related to the Company’s organization, significant accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“US GAAP”) has been condensed or omitted. The accounting policies followed in the preparation of these unaudited condensed consolidated financial statements are consistent with those followed in the Company’s annual consolidated financial statements for the year ended December 31, 2013, as filed on Form 10-K. In the opinion of management, these unaudited condensed consolidated financial statements contain all material adjustments, consisting only of normal recurring adjustments, necessary to fairly state the Company’s financial position, results of operations and cash flows for the periods presented and the presentations and disclosures herein are adequate when read in conjunction with the Company’s Form 10-K for the year ended December 31, 2013. The results of operations for the three and nine months ended September 30, 2014 and 2013 are not necessarily indicative of the results to be expected for the full year (or any other period). Significant estimates and assumptions in these unaudited condensed consolidated financial statements include:

		•		product warranty reserves,

		•		inventory valuation reserves,

		•		revenue recognition allocated in multiple-deliverable arrangements,

		•		the carrying value of long-lived assets including property and equipment, goodwill and other intangible assets,

		•		recognition, measurement and valuation of current and deferred income taxes,

		•		fair value of stock awards issued, the estimated vesting period for performance-based stock awards and forfeiture rates, and

		•		recognition and measurement of contingencies and accrued litigation expense.
	Actual results could differ materially from these estimates.
	b. Segment information
	The Company is comprised of two reportable segments: the manufacture and sale of CEWs, accessories and other related products and services (the “TASER Weapons” segment); and the video business which includes the TASER Cam, AXON video products and EVIDENCE.com (the “EVIDENCE.com & Video” segment). Reportable segments are determined based on discrete financial information reviewed by the Company’s Chief Executive Officer who is the Chief Operating Decision Maker (the “CODM”) for the Company. The Company organizes and reviews operations based on products and services, and currently, there are no operating segments that are aggregated. The Company performs an annual analysis of its reportable segments. Additional information related to the Company’s segments is summarized in Note 13.

	c. Geographic information and major customers
	For the three and nine months ended September 30, 2014 and 2013, net sales by geographic area were as follows (dollars in thousands):


			Three Months Ended September 30,											Nine Months Ended September 30,
			2014						2013					2014				2013
	United States		$	37,605			84.8	%	$	31,483		89.4	%	$	95,336	81	%	$	86,036	88	%
	Other Countries			6,744			15.2			3,714		10.6			22,373	19			11,770	12

	Total		$	44,349			100	%	$	35,197		100	%	$	117,709	100	%	$	97,806	100	%

	Sales to customers outside of the United States are typically denominated in U.S. dollars and are attributed to each country based on the shipping address of the distributor or customer. For the three and nine months ended September 30, 2014 and 2013, no individual country outside of the United States represented greater than 10% of total net sales. Sales in the international market generally are larger and occur more intermittently than in the domestic market due to the profile of the Company’s customers.
	For the three months ended September 30, 2014, one customer represented approximately 11.0% of total net sales. For the nine months ended September 30, 2014, no customers represented more than 10% of total net sales. In the three and nine months ended September 30, 2013, one distributor represented approximately 12.2% and 12.1% of total net sales, respectively. At September 30, 2014, the Company had receivables from two customers comprising approximately 27.2% of the aggregate accounts receivable balance, and at December 31, 2013, the Company had receivables from one customer comprising approximately 17.4% of the aggregate accounts receivable balance.
	d. Income per common share
	Basic income per common share is computed by dividing net income by the weighted average number of common shares outstanding during the periods presented. Diluted income per share is calculated based on the weighted average number of common shares outstanding for the period plus the dilutive effect of stock options and restricted stock units using the treasury stock method. The calculation of the weighted average number of shares outstanding and income per share are as follows (in thousands, except per share data):


			Three Months Ended September 30,						Nine Months Ended September 30,
			2014			2013			2014		2013
	Numerator for basic and diluted earnings per share:
	Net income		$	7,558		$	5,114		$	14,832	$	12,869

	Denominator:
	Weighted average shares outstanding — basic			52,475			51,342			53,013		51,727
	Dilutive effect of stock-based awards			1,346			1,979			1,537		1,917

	Diluted weighted average shares outstanding			53,821			53,321			54,550		53,644

	Anti-dilutive stock-based awards excluded			336			565			328		898

	Net income per common share:
	Basic		$	0.14		$	0.1		$	0.28	$	0.25
	Diluted		$	0.14		$	0.1		$	0.27	$	0.24
	e. Revenue recognition
	The Company derives revenue from two primary sources: (1) the sale of physical products, including CEWs, AXON cameras, corresponding extended warranties, and related accessories such as cartridges and batteries, and (2) subscription to EVIDENCE.com, the Company’s digital evidence management Software-as-a-Solution (“SaaS”) (including data storage fees and other ancillary services), which includes varying levels of support. To a lesser extent, the Company also recognizes training and other revenue. Revenue is recognized when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, title has transferred, the price is fixed and collectability is reasonably assured. Extended warranty revenue, SaaS revenue and related data storage revenue are recognized ratably over the term of the contract beginning on the commencement date of each contract.

	Revenue arrangements with multiple deliverables are divided into separate units and revenue is allocated using the relative selling price method based upon vendor-specific objective evidence of selling price, or third-party evidence of selling price if vendor-specific objective evidence does not exist. If neither vendor-specific objective evidence nor third-party evidence exists, management uses its best estimate of selling price.
	The Company offers customers the right to purchase extended warranties that include additional services and coverage beyond the limited warranty for certain products. Revenue for extended warranty purchases is deferred at the time of sale and recognized over the warranty period commencing on the date of sale. Extended warranties range from one to five years.
	EVIDENCE.com and AXON cameras are sold separately, but in most instances are purchased together. In these instances, customers typically purchase and pay for the equipment and one year of EVIDENCE.com in advance. Additional years of service are generally billed annually over a specified service term, which has typically ranged from one to five years. AXON equipment has stand-alone value and represents a deliverable that is provided to the customer at the time of sale, while EVIDENCE.com services are provided over the specified term of the contract. The Company recognizes revenue for the AXON equipment at the time of the sale consistent with the discussion of multiple deliverable arrangements above. Revenue for EVIDENCE.com is deferred at the time of the sale and recognized over the service period. In certain circumstances, not all requirements are met for the recognition of revenue relative to equipment sold in conjunction with EVIDENCE.com at the time the equipment is provided to customers. In such circumstances, based on limitations associated with the arrangement consideration, the revenue may be recognized ratably over the specified term of the contract, or when all conditions for revenue recognition are met, if sooner.
	The Company offers the TASER Assurance Program (“TAP”) whereby a customer purchasing a product and joining the program will have the right to trade-in the original product for a new product of the same or like model in the future. Upon joining TAP, customers also receive an extended warranty for the initial products purchased and spare inventory. Under this program the customer generally pays additional annual installments over the contract period, generally three to five years. The Company records consideration received related to the future purchase as deferred revenue until all revenue recognition criteria are met, which is generally at the end of the contract period when the product is delivered.
Sales tax collected on sales is netted against government remittances and thus, recorded on a net basis. Training revenue is recorded as the service is provided.
Deferred revenue consists of billings and/or payments received in advance related to products and services for which the criteria for revenue recognition have not yet been met. Deferred revenue that will be recognized during the succeeding twelve month period is recorded as current deferred revenue and the remaining portion is recorded as long-term. Deferred revenue does not include future revenue from multi-year contracts for which no invoice has yet been created. Generally, customers are billed in annual installments. See Note 5 for further discussion of the Company’s deferred revenue.
Sales are typically made on credit and the Company generally does not require collateral. Management performs ongoing credit evaluations of its customers’ financial condition and maintains an allowance for estimated potential losses. Uncollectable accounts are charged to expense when deemed uncollectible, and accounts and notes receivable are presented net of an allowance for doubtful accounts. This allowance represents management’s best estimate and is based on their judgment after considering a number of factors, including third-party credit reports, actual payment history, cash discounts, customer-specific financial information and broader market and economic trends and conditions.
The Company may, from time to time, enter into agreements with its customers to finance a customer’s purchases with a note receivable that may range in terms up to five years. Sales are recorded at the fair value of the note, which is generally sold and assigned to a third-party financing company. The terms of the assignments are such that the Company expects to receive payment within 30 days of the original sale. The assignments are non-recourse and the Company has no obligations or continuing involvement with these notes receivable. Prior to entering into an assignment, the Company evaluates the credit quality and financial condition of the third-party financing company. As of September 30, 2014 there was $0.8 million in accounts and notes receivable related to such arrangements. No such balances were recorded at December 31, 2013. The Company did not record any interest income on notes receivable due to the minimal holding periods, nor has the Company recognized gains or losses upon the assignment of these notes.

f. Warranty costs
The Company warranties its CEWs, StrikeLight, AXON cameras and E-Docks from manufacturing defects on a limited basis for a period of one year after purchase and, thereafter, will replace any defective unit for a fee. Estimated costs for the standard warranty are charged to cost of products sold and services delivered when revenue is recorded for the related product. Future warranty costs are estimated based on historical data related to returns and warranty costs on a quarterly basis and this rate is applied to current product sales. Historically, reserve amounts have been increased if management becomes aware of a component failure that could result in larger than anticipated returns from customers. The accrued warranty liability is reviewed quarterly to evaluate whether it sufficiently reflects the remaining warranty obligations based on the anticipated expenditures over the balance of the warranty obligation period, and adjustments are made when actual warranty claim experience differs from estimates. Costs related to extended warranties are charged to cost of products sold and services delivered when incurred.
The reserve for warranty returns is included in accrued liabilities on the condensed consolidated balance sheets. The Company recognized additional warranty expense during the first nine months of 2014 due to a change in estimate regarding the Company’s first generation E-Dock as a result of an updated version launched in the first quarter. The Company also recognized additional warranty expense during the nine months ended September 30, 2013 due to a change in estimate for the AXON flex and X26P CEWs based on the analysis of return data for their first year of sales. Changes in the Company’s estimated product warranty liabilities are as follows (in thousands):


		Nine Months Ended September 30,
		2014			2013
Balance, beginning of period,		$	955		$	484
Utilization of accrual			(646	)		(420	)
Warranty expense			517			644

Balance, end of period,		$	826		$	708

g. Fair value of financial instruments
The Company uses the fair value framework, which prioritizes the inputs to valuation techniques for measuring financial assets and liabilities measured on a recurring basis and for non-financial assets and liabilities when these items are re-measured. Fair value is considered to be the exchange price in an orderly transaction between market participants, to sell an asset or transfer a liability at the measurement date. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. The Company categorizes each of its fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are:

	•		Level 1 – Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.

	•		Level 2 – Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs and significant value drivers are observable in active markets are Level 2 valuation techniques.

	•		Level 3 – Valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are valuation technique inputs that reflect the Company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.
The Company has cash equivalents and investments that at September 30, 2014 and December 31, 2013 were comprised of money market funds, state and municipal obligations, corporate bonds, and certificates of deposits. See additional disclosure regarding the fair value of the Company’s cash equivalents and investments in Note 2. Included in the balance of Other assets as of September 30, 2014 is $1.0 million related to corporate-owned life insurance policies which are used to fund the Company’s deferred compensation plan. The Company determines the fair value of its insurance contracts by obtaining the cash surrender value of the contracts from the policy issuer, a Level 2 valuation technique.
The Company’s financial instruments also include accounts and notes receivable, accounts payable and accrued liabilities. Due to the short-term nature of these instruments, their fair values approximate their carrying values on the balance sheet.

h. Impairment of Long-Lived Assets
Management evaluates whether events and circumstances have occurred that indicate the remaining estimated useful life of long-lived assets and identifiable intangible assets may warrant revision or that the remaining balance of these assets may not be recoverable. Such circumstances could include, but are not limited to, a change in the product mix, a change in the way products are created, produced or delivered, or a significant change in the way products are branded and marketed. In performing the review for recoverability, management estimates the future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. The amount of the impairment loss, if impairment exists, is calculated based on the excess of the carrying amounts of the assets over their estimated fair value computed using discounted cash flows. No impairment losses were recorded in the three or nine months ended September 30, 2014 and 2013.
i. Recently issued accounting guidance
In June 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period” (“ASU 2014-12”). The amendments in ASU 2014-12 require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Accounting Standards Codification Topic No. 718, “Compensation—Stock Compensation” (“ASC 718”), as it relates to awards with performance conditions that affect vesting to account for such awards. The amendments in ASU 2014-12 are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Early adoption is permitted. Entities may apply the amendments in ASU 2014-12 either: (i) prospectively to all awards granted or modified after the effective date; or (ii) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The Company is currently evaluating the potential impact of the adoption of this guidance on its consolidated financial statements, however does not expect there to be a material impact at this time.
In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, ASU 2014-09 provides for the following steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. ASU 2014-09 supersedes the revenue recognition requirements in Accounting Standards Codification Topic No. 605, “Revenue Recognition,” most industry-specific guidance throughout the industry topics of the Accounting Standards Codification, and some cost guidance related to construction-type and production-type contracts. ASU 2014-09 is effective for public entities for annual periods and interim periods within those annual periods beginning after December 15, 2016. Early adoption is not permitted. Companies may use either a full retrospective or a modified retrospective approach to adopt ASU 2014-09. The Company is currently evaluating the potential impact of the adoption of this guidance on its consolidated financial statements.
In July 2013, the FASB issued ASU No. 2013-11 to standardize the balance sheet presentation of unrecognized tax benefits. This update applies to all entities that have unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists at the reporting date. The new guidance was effective for fiscal years beginning after December 15, 2013. The adoption of this guidance resulted in an immaterial reclassification on the Company’s consolidated balance sheet.
j. Reclassification of Prior Year Presentation
Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations.

Cash_Cash_Equivalents_and_Inve

Cash, Cash Equivalents, and Investments	9 Months Ended
Cash, Cash Equivalents, and Investments	Sep. 30, 2014
Cash and Cash Equivalents [Abstract]	'
Cash, Cash Equivalents, and Investments	'
	2. Cash, cash equivalents, and investments
	The following tables summarizes the Company’s cash, cash equivalents and held-to-maturity investments at September 30, 2014 and December 31, 2013 (in thousands):


		As of September 30, 2014
		Amortized		Gross		Gross			Fair		Cash and		Short-Term		Long-Term
		Cost		Unrealized		Unrealized			Value		Cash		Investments		Investments
				Gains		Losses					Equivalents
	Cash	$	36,392	$	—	$	—		$	36,392	$	36,392	$	—	$	—
	Level 1:
	Money market funds		2,223		—		—			2,223		2,223		—		—
	Corporate bonds		15,455		3		(20	)		15,438		—		12,811		2,644

	Subtotal		17,678		3		(20	)		17,661		2,223		12,811		2,644

	Level 2:
	State and municipal obligations		17,466		21		—			17,487		—		14,689		2,777
	Certificates of deposit		2,473		—		—			2,473		—		1,483		990

	Subtotal		19,939		21		—			19,960		—		16,172		3,767

	Total	$	74,009	$	24	$	(20	)	$	74,013	$	38,615	$	28,983	$	6,411


		As of December 31, 2013
		Amortized		Gross		Gross			Fair		Cash and		Short-Term		Long-Term
		Cost		Unrealized		Unrealized			Value		Cash		Investments		Investments
				Gains		Losses					Equivalents
	Cash	$	37,196	$	—	$	—		$	37,196	$	37,196	$	—	$	—
	Level 1:
	Money market funds		5,030		—		—			5,030		5,030		—		—
	Corporate bonds		7,743		3		(14	)		7,732		—		1,102		6,641

	Subtotal		12,773		3		(14	)		12,762		5,030		1,102		6,641

	Level 2:
	State and municipal obligations		10,807		14		—			10,821		45		5,626		5,136
	Certificates of deposit		2,619		—		—			2,619		—		2,373		246

	Subtotal		13,426		14		—			13,440		45		7,999		5,382

	Total	$	63,395	$	17	$	(14	)	$	63,398	$	42,271	$	9,101	$	12,023

	The Company believes the unrealized losses on the Company’s investments are due to interest rate fluctuations. As these investments are either short-term in nature, are expected to be redeemed at par value and/or because the Company has the ability and intent to hold these investments to maturity, the Company does not consider these investments to be other than temporarily impaired at September 30, 2014. None of Company’s investments have been in an unrealized loss position for more than one year.
	The following table summarizes the amortized cost and fair value of the short-term and long-term investments held by the Company at September 30, 2014 by contractual maturity (in thousands):


		Amortized Cost		Fair Value
	Due in less than one year	$	28,983	$	28,989
	Due after one year, through two years		6,163		6,167
	Due after two years		248		242

	Total short-term and long-term investments	$	35,394	$	35,398

Inventory

Inventory	9 Months Ended
Inventory	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Inventory	'
	3. Inventory
	Inventories are stated at the lower of cost or market. Cost is determined using the weighted average cost of raw materials, which approximates the first-in, first-out (“FIFO”) method, and includes allocations of manufacturing labor and overhead. Provisions are made to reduce potentially excess, obsolete or slow-moving inventories to their net realizable value. Inventories as of September 30, 2014 and December 31, 2013, consisted of the following (in thousands):


		September 30,			December 31,
		2014			2013
	Raw materials	$	10,697		$	7,376
	Work-in-process		134			44
	Finished goods		6,043			4,688
	Reserve for excess and obsolete inventory		(746	)		(999	)

	Total inventory	$	16,128		$	11,109

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	9 Months Ended
Goodwill and Intangible Assets	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	4. Goodwill and Intangible assets
	In the fourth quarter of 2013, the Company recorded goodwill related to the acquisition of Familiar, Inc. (“Familiar”), which was calculated as the excess of the purchase price over the fair value of the identifiable tangible and intangible assets. The balance of goodwill at both September 30, 2014 and December 31, 2013 was $2.2 million.
	Other intangible assets consisted of the following at September 30, 2014 and December 31, 2013 (in thousands):


				September 30, 2014							31-Dec-13
		Useful Life		Gross		Accumulated			Net Carrying		Gross		Accumulated			Net Carrying
				Carrying		Amortization			Amount		Carrying		Amortization			Amount
				Amount							Amount
	Amortized:
	Domain names	5 Years		$	125	$	(111	)	$	14	$	125	$	(102	)	$	23
	Issued patents	4 to 15 Years			1,735		(524	)		1,211		1,529		(441	)		1,088
	Issued trademarks	9 to 11 Years			558		(191	)		367		437		(147	)		290

	Total amortized				2,418		(826	)		1,592		2,091		(690	)		1,401

	Not amortized:
	TASER trademark				900					900		900					900
	Patents and trademarks pending				615					615		1,016					1,016

	Total not amortized				1,515					1,515		1,916					1,916

	Total intangible assets			$	3,933	$	(826	)	$	3,107	$	4,007	$	(690	)	$	3,317

	Amortization expense relative to intangible assets for the three months ended September 30, 2014 and 2013 was approximately $71,000 and $39,000, respectively. Amortization expense relative to intangible assets for the nine months ended September 30, 2014 and 2013 was approximately $153,000 and $115,000, respectively. Estimated amortization expense of intangible assets for the remaining three months of 2014, the next five years ended December 31, and thereafter is as follows (in thousands):


	2014 (remaining three months)	$	46
	2015		178
	2016		171
	2017		167
	2018		157
	2019		147
	Thereafter		726

	Total	$	1,592

Deferred_Revenue

Deferred Revenue	9 Months Ended
Deferred Revenue	Sep. 30, 2014
Revenue Recognition [Abstract]	'
Deferred Revenue	'
	5. Deferred Revenue
	Deferred revenue consisted of the following at September 30, 2014 and December 31, 2013 (in thousands):


		September 30,		December 31,
		2014		2013
	Warranty	$	20,275	$	15,889
	EVIDENCE.com		6,864		4,026
	TASER Assurance Program		2,771		138
	Other		89		166

	Total deferred revenue		29,999		20,219
	Total current portion of deferred revenue		10,033		6,878

	Total long-term portion of deferred revenue	$	19,966	$	13,341

	Included in the current portion of deferred revenue at September 30, 2014 is approximately $3.3 million related to EVIDENCE.com and $6.3 million related to warranties, and $0.3 million related to the TASER Assurance Program. TASER Assurance Program deferred revenue includes the value of the price-lock for a future purchase as well as the guarantee of the product, both of which will be recognized upon delivery of the product at the end of the contract period. For more information relating to the Company’s revenue recognition policies please refer to Note 1(e).

Accrued_Liabilities

Accrued Liabilities	9 Months Ended
Accrued Liabilities	Sep. 30, 2014
Payables and Accruals [Abstract]	'
Accrued Liabilities	'
	6. Accrued liabilities
	Accrued liabilities consisted of the following at September 30, 2014 and December 31, 2013 (in thousands):


		September 30,		December 31,
		2014		2013
	Accrued salaries and benefits	$	3,070	$	2,328
	Accrued judgments and settlements		330		3,350
	Accrued professional fees		368		286
	Accrued warranty expense		826		955
	Accrued income and other taxes		349		437
	Other accrued expenses		1,910		1,484

	Accrued liabilities	$	6,853	$	8,840

	The judgment in the case AA & SABA Consultant, Inc. vs. TASER of $4.5 million was paid in the second quarter of 2014, of which $3.3 million was accrued for at December 31, 2013, which reduced accrued judgments and settlements to $0.3 million as of September 30, 2014 (see Note 10).

Income_Taxes

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	7. Income taxes
	Deferred Tax Assets
	Net deferred income tax assets at September 30, 2014, include capitalized research and development costs, research and development tax credits, non-qualified stock-based compensation expense, deferred warranty revenue, warranty and inventory reserves, accrued vacation, and other items, partially offset by accelerated depreciation expense. The Company’s total current and long-term net deferred tax assets at September 30, 2014 are $16.8 million.

	In preparing the Company’s condensed consolidated financial statements, management assesses the likelihood that its deferred tax assets will be realized from future taxable income. In evaluating the Company’s ability to recover its deferred income tax assets, management considers all available positive and negative evidence, including its operating results, ongoing tax planning and forecasts of future taxable income on a jurisdiction by jurisdiction basis. A valuation allowance is established if it is determined that it is more likely than not that some portion or all of the net deferred tax assets will not be realized. Management exercises significant judgment in determining its provisions for income taxes, its deferred tax assets and liabilities, and its future taxable income for purposes of assessing its ability to utilize any future tax benefit from its deferred tax assets. Although management believes that its tax estimates are reasonable, the ultimate tax determination involves significant judgments that could become subject to audit by tax authorities in the ordinary course of business, as well as the generation of sufficient future taxable income. Management has determined that it is more likely than not that future sales and profitability will allow for the utilization of the deferred tax assets; however, the deferred tax asset could be reduced or a valuation allowance could be recorded in the near-term if estimates of future taxable income during the carry forward period change.
	The Company has completed research and development (“R&D”) tax credit studies which identified approximately $10.4 million in tax credits for federal, Arizona and California income tax purposes related to the 2003 through 2014 tax years. Management has made the determination that it is more likely than not that the full benefit of the R&D tax credit will not be sustained on examination and recorded a liability for unrecognized tax benefits of $3.2 million as of September 30, 2014. In addition, management accrued approximately $0.1 million for estimated uncertain tax positions related to certain state income tax liabilities. As of September 30, 2014 management does not expect the amount of the unrecognized tax benefit liability to increase or decrease significantly within the next 12 months. Should the total unrecognized tax benefit of $3.3 million be recognized, the Company’s effective tax rate would be favorably impacted. Approximately $1.9 million of the unrecognized tax benefit associated with research and development credits has been netted against the research and development credit deferred tax asset.
	Effective Tax Rate
	The Company’s overall effective tax rate for the nine months ended September 30, 2014, after discrete period adjustments, was 36.9%. Before discrete adjustments the tax rate was 37.6%, which is above the statutory rate due to the impact of state taxes and non-deductible expenses for items such as Incentive Stock Option (“ISO”) expense, meals and entertainment and lobbying fees, but also reduced by the domestic production activities deduction, the net effects of which makes projected annual net income for tax purposes higher than our book pre-tax income.

Stockholders_Equity

Stockholders' Equity	9 Months Ended
Stockholders' Equity	Sep. 30, 2014
Equity [Abstract]	'
Stockholders' Equity	'

	8. Stockholders’ equity

	Stock Option Activity

	In May 2013, the Company’s stockholders approved a new stock incentive plan authorizing an additional 1.6 million shares, plus remaining available shares under a prior plan for issuance under the new plan. Combined with the legacy stock incentive plans, there are approximately 1.9 million shares available for grant as of September 30, 2014.

	Performance-based stock awards

	The Company has issued performance-based stock options and performance-based restricted stock units (“RSUs”), the vesting of which is contingent upon the achievement of certain performance criteria related to the operating performance of the Company as well as successful and timely development and market acceptance of future product introductions. In addition, certain of the performance RSUs have additional service requirements subsequent to the achievement of the performance criteria. Compensation expense is recognized over the implicit service period (the longer of the period the performance condition is expected to be achieved or the required service period) based on management’s estimate of the probability of the performance criteria being satisfied, adjusted at each balance sheet date.

	Restricted Stock Units

	The following table summarizes RSU activity for the nine months ended September 30, 2014 (number of units and aggregate intrinsic value in thousands):



			Number of				Weighted			Aggregate
			Units				Average Grant-			Intrinsic Value
							Date Fair Value
	Units outstanding, beginning of period			1,279			$	9.67
	Granted			502				16.73
	Released			(369	)			7.51
	Forfeited			(144	)			12.83

	Units outstanding, end of period			1,268				12.75		$	19,575




	Aggregate intrinsic value represents the Company’s closing stock price on the last trading day of the period, which was $15.44 per share on September 30, 2014, multiplied by the number of RSUs outstanding. As of September 30, 2014, there was $11.4 million in unrecognized compensation cost related to RSUs granted under the Company’s stock plans. The Company expect to recognize this cost over a weighted average period of 30 months. RSUs are released when vesting requirements are met.

	In the nine months ended September 30, 2014, the Company granted approximately 0.1 million performance-based RSUs, which are included in the table above. Of the approximately 0.3 million performance-based RSUs outstanding as of September 30, 2014, the performance criteria have been met for approximately 0.1 million units, which will vest upon the completion of service requirements. Certain of the performance-based RSUs granted in 2014 contain provisions whereby the amount of RSUs that ultimately vest is dependent upon the level of achievement of performance metrics. The amount of RSUs included in the table above related to such grants is the target level, which is the Company’s best estimate of the amount of RSUs that will vest. The maximum additional number of RSUs that could be earned is approximately 0.1 million, which are not included in the table above.

	Certain RSUs that vested in the first nine months of 2014 were net-share settled such that the Company withheld shares with value equivalent to the employees’ minimum statutory obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities. Total shares withheld were approximately 0.1 million with a value of approximately $1.3 million on their respective vesting dates as determined by the Company’s closing stock price on such dates. Payments for the employees’ tax obligations are reflected as a financing activity within the statement of cash flows. These net-share settlements had the effect of share repurchases by the Company as they reduced the amount of shares that would have otherwise been issued as a result of vesting.

	Stock Options

	The following table summarizes stock option activity for the nine months ended September 30, 2014 (number of options and aggregate intrinsic value in thousands):



			Number of				Weighted			Weighted			Aggregate
			options				Average			Average			Intrinsic Value
							Exercise Price			Remaining
										Contractual
										Life (years)
	Options outstanding, beginning of period			3,366			$	6.15
	Granted			—
	Exercised			(1,218	)			7.06
	Expired / forfeited			(54	)			10.29

	Options outstanding, end of period			2,094				5.51			4.7		$	20,925

	Exercisable at September 30, 2014			2,055				5.53			4.7			20,508

	Expected to vest after September 30, 2014			27				4.73			4.89			287


	Aggregate intrinsic value represents the difference between the exercise price of the underlying stock option awards and the closing market price of the Company’s common stock of $15.44 on September 30, 2014. The aggregate intrinsic value of options exercised for the three and nine months ended September 30, 2014 was approximately $1.7 million and $14.4 million, respectively. The aggregate intrinsic value of options exercised for the three and nine months ended September 30, 2013 was approximately $5.3 million and $9.1 million, respectively. As of September 30, 2014, total unrecognized stock-based compensation expense related to unvested stock options was approximately $32,000, which is expected to be recognized over a remaining weighted average period of approximately nine months. Options expected to vest are presented net of expected forfeitures.

	Included in the table above is approximately 0.4 million of performance-based options of which, 0.3 million are vested. The Company does not expect the remaining performance-based options to vest and does not expect to recognize any future expense related to performance-based stock options.



Share-Based Compensation Expense

When granted, the Company calculates the fair value of stock options using the Black-Scholes-Merton option pricing valuation model, which incorporates various assumptions including volatility, expected life and risk-free interest rates. No options were awarded during the nine month periods ended September 30, 2014 or 2013. The estimated fair value of stock-based compensation awards is amortized to expense on a straight-line basis over the service periods. As stock-based compensation expense recognized is based on awards ultimately expected to vest, it is reduced for estimated forfeitures. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company’s forfeiture rate was calculated based on its historical experience of awards which ultimately vested.

Share-based compensation was classified as follows (in thousands):



		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2014				2013			2014			2013
Cost of products sold		$	61			$	50		$	149		$	134
Sales, general and administrative expenses			940				736			2,598			2,293
Research and development expenses			436				177			1,374			479

Total share-based compensation		$	1,437			$	963		$	4,121		$	2,906


Total share-based compensation expense recognized in the statements of operations for the three months ended September 30, 2014 and 2013, included approximately $2,000 and $22,000, respectively, related to incentive stock options for which no tax benefit is recognized. Total share-based compensation expense recognized in the statements of operations for the nine months ended September 30, 2014 and 2013, included approximately $18,000 and $0.1 million, respectively, related to incentive stock options for which no tax benefit is recognized.

Issuer Purchases of Equity Securities

In May 2014, the Company announced that TASER’s Board of Directors authorized a stock repurchase program to acquire up to $30.0 million of the Company’s outstanding common stock subject to stock market conditions and corporate considerations. During the quarter ended September 30, 2014, the Company purchased approximately 0.2 million common shares under this program for a total cost of approximately $2.9 million, or a weighted average cost of $11.94 per share. The weighted average cost includes the average price paid per share of $11.91, plus any applicable administrative costs for the transaction. During the five month period from inception of the repurchase program through September 30, 2014, the Company purchased approximately 1.7 million common shares under this program for a total cost of approximately $22.4 million, or a weighted average cost of $12.99 per share. The weighted average cost includes the average price paid per share of $12.96, plus any applicable administrative costs for the transaction. The Company has approximately $7.6 million remaining on the repurchase authorization as of September 30, 2014. Repurchases may be made from time to time on the open market.

Line_of_Credit

Line of Credit	9 Months Ended
Line of Credit	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Line of Credit	'
	9. Line of credit
	The Company has a $10.0 million revolving line of credit with a domestic bank. As of September 30, 2014, the Company had letters of credit outstanding of approximately $47,000 under the facility. The line is secured by the Company’s accounts receivable and inventory, and bears interest at varying rates (currently LIBOR plus 1.5% to Prime). The line of credit matures on June 30, 2015, and requires monthly payments of interest only. At September 30, 2014 and December 31, 2013, there were no borrowings under the line of credit. The Company’s agreement with the bank requires it to comply with certain financial and other covenants including maintenance of minimum tangible net worth and a fixed charge coverage ratio. The ratio of total liabilities to tangible net worth can be no greater than 1:1, and the fixed charge coverage ratio, as defined in the line of credit, can be no less than 1.25:1, based upon a trailing twelve-month period. At September 30, 2014, the Company’s tangible net worth ratio was 0.40:1 and its fixed charge coverage ratio was 2.86:1, and accordingly, the Company was in compliance with these covenants.

Commitments_and_Contingencies

Commitments and Contingencies

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

10. Commitments and contingencies

Product Litigation

The Company is currently named as a defendant in 16 lawsuits in which the plaintiffs allege either wrongful death or personal injury in situations in which a TASER CEW was used (or present) by law enforcement officers in connection with arrests or during training exercises. In addition, two other product litigation matters in which the Company is involved are currently on appeal. While the facts vary from case to case, the product liability claims are typically based on an alleged product defect resulting in injury or death, usually involving a failure to warn, and the plaintiffs are seeking monetary damages. The information throughout this note is current through the filing date of this Quarterly Report on Form 10-Q.

As a general rule, it is the Company’s policy not to settle suspect injury or death cases. Exceptions are sometimes made where the settlement is strategically beneficial to the Company. Also, on occasion, the Company’s insurance company has settled such lawsuits over the Company’s objection where the exposure exceeds the Company’s liability insurance deductibles. Due to the confidentiality of the Company’s litigation strategy and the confidentiality agreements that are executed in the event of a settlement, the Company does not generally identify or comment on which specific lawsuits have been settled or the amount of any settlement.

In 2009, the Company implemented new risk management strategies, including revisions to product warnings and training to better protect both the Company and its customers from litigation based on ‘failure to warn’ theories – which comprise the vast majority of the cases against the Company. These risk management strategies have been highly effective in reducing the rate and exposure from litigation post-2009. From the third quarter of 2011 to the third quarter of 2014, we have reduced our outstanding product liability cases from 55 active to 16 active cases.

Management believes that pre-2009 cases have a different risk profile than cases which have occurred since the risk management procedures were introduced in 2009. Therefore, the Company necessarily treats certain pre-2009 cases as exceptions to the Company’s general no settlement policy in order to reduce caseload, legal costs and liability exposure. The Company intends to continue its successful practice of aggressively defending and generally not settling litigation except in very limited and unusual circumstances as described above.

With respect to each of the pending lawsuits, the following table lists the name of plaintiff, the date the Company was served with process, the jurisdiction in which the case is pending, the type of claim and the status of the matter.

Plaintiff

Served

Jurisdiction

Claim Type

Status

Grable

8-Aug

6th Judicial Circuit Court, Pinellas County, FL

Training Injury

Discovery Phase

Koon

8-Dec

17th Judicial Circuit Court, Broward County, FL

Training Injury

Discovery Phase

Derbyshire

9-Nov

Ontario, Canada Superior Court of Justice

Officer Injury

Discovery Phase

Thompson

10-Mar

11th Judicial Circuit Court, Miami-Dade County, FL

Suspect Injury During Arrest

Discovery Phase

Doan

10-Apr

The Queens Bench Alberta, Red Deer Judicial Dist.

Wrongful Death

Discovery Phase

Shymko

10-Dec

The Queens Bench, Winnipeg Centre, Manitoba

Wrongful Death

Pleading Phase

Juran

10-Dec

Hennepin County District Court, 4th Judicial District

Officer Injury

Pleading Phase

Wilson

11-May

US District Court, ED MO

Wrongful Death

Trial scheduled

for Nov. 2014

Ramsey

12-Jan

17th Judicial Circuit Court, Broward County, FL

Wrongful Death

Discovery Phase

Firman

12-Apr

Ontario, Canada Superior Court of Justice

Wrongful Death

Pleading Phase

Ricks

12-May

US District Court, WD LA

Wrongful Death

Motion Phase

Miller

13-Jan

New Castle County Superior Court, DE

Wrongful Death

Discovery Phase

Rascom

14-Apr

US District Court, AZ

Wrongful Death

Pleading Phase

Schrock

14-Sep

San Bernardino County Superior Court, CA

Wrongful Death

Pleading Phase

Ward

14-Oct

Richmond County Superior Court, GA

Officer Fired

Pleading Phase

Moore

14-Oct

St. Louis County Circuit Court, MO

Wrongful Death

Pleading Phase

In addition, other product litigation matters in which the Company is involved that are currently on appeal are listed below:

Plaintiff

Month

Jurisdiction

Claim Type

Status

Served

Glowczenski

4-Oct

US District Court, ED NY

Wrongful Death

Notice of Appeal filed Sep. 2013; Opening Brief was filed Jan. 2014; Answering Brief filed Apr. 2014.

Mitchell

12-Apr

US District Court, ED MI

Wrongful Death

Notice of Appeal filed Aug. 2014

Cases that were dismissed or judgment entered during the third quarter of 2014, and through the filing date of this Quarterly Report on Form 10-Q, are listed in the table below. Cases that were dismissed or judgment entered in prior fiscal quarters are not included in this table.

Plaintiff

Month

Jurisdiction

Claim Type

Status

Served

Faltesek

14-Apr

Harris County District Court, TX

Wrongful Death

Voluntary Dismissal

Mitchell

12-Apr

US District Court, ED MI

Wrongful Death

Motion for

Summary Judgment

Granted

McCue

14-Mar

US District Court, District of Maine

Wrongful Death

Voluntary Dismissal

Slade

13-Dec

US District Court, ED TX

Wrongful Death

Voluntary Dismissal

Goodard

14-Jul

Pinellas County Circuit Court, FL

Wrongful Death

Voluntary Dismissal

Parker

14-Jul

US District Court, SD TX

Suspect Injury During Arrest

Voluntary Dismissal

The claims, and in some instances the defense, of each of these lawsuits have been submitted to the Company’s insurance carriers that maintained insurance coverage during the applicable periods. The Company continues to maintain product liability insurance coverage with varying limits and deductibles. The following table provides information regarding the Company’s product liability insurance. Remaining insurance coverage is based on information received from the Company’s insurance provider (in millions).

Policy Year

Policy

Insurance

Deductible

Defense

Remaining

Active Cases and Cases on Appeal

Start Date

End Date

Coverage

Amount

Costs

Insurance

Covered

Coverage

2004

12/1/03

12/1/04

0.1

Glowczenski

2005

12/1/04

12/1/05

0.3

n/a

2006

12/1/05

12/1/06

0.3

3.7

n/a

2007

12/1/06

12/1/07

0.3

n/a

2008

12/1/07

12/15/08

0.5

—

Grable, Koon

2009

12/15/08

12/15/09

Derbyshire

2010

12/15/09

12/15/10

Thompson, Shymko, Doan, Juran

2011

12/15/10

12/15/11

Wilson

Jan – Jun 2012

12/15/11

6/25/12

Ramsey, Firman, Ricks, Mitchell

Jul – Dec 2012

6/25/12

12/15/12

n/a

2013

12/15/12

12/15/13

Miller

2014

12/15/13

12/15/14

Rascom, Schrock, Moore, Ward

Other Litigation

AA & Saba (AZ) Lawsuit

In February 2012, the Company was served with a complaint in the matter of AA & Saba Consultants, Inc. v. TASER International, Inc. that was filed in the Superior Court for the County of Maricopa, Arizona, which alleges that the Company breached a contract by unilaterally terminating a distributor agreement between the Company and plaintiff without good cause. The complaint seeks an award for damages, costs, expenses and attorneys’ fees. TASER filed a counterclaim for breach of contract and fraud. During 2012, the Company made a settlement offer of $0.8 million to plaintiff, which was recorded as an expense in SG&A in that year. The offer was not accepted and thereafter was withdrawn. On February 28, 2014, the jury returned a verdict of $3.3 million against the Company. Judgment had not been entered at the time. The Company recorded an additional $2.6 million of expense in the fourth quarter of 2013 as Litigation judgments on the statement of operations.

On May 6, 2014 the court issued a Minute Entry Order awarding Plaintiff approximately $1.2 million in attorneys’ fees, costs and expenses which was recorded as a litigation settlement in the second quarter of 2014. On May 6, 2014 the matter was resolved and dismissed.

General

From time to time, the Company is notified that it may be a party to a lawsuit or that a claim is being made against it. It is the Company’s policy to not disclose the specifics of any claim or threatened lawsuit until the summons and complaint are actually served on the Company. After carefully assessing the claim, and assuming we determine that we are not at fault or we disagree with the damages or relief demanded, we vigorously defend any lawsuit filed against the Company. In certain legal matters, we record a liability when losses are deemed probable and reasonably estimable. In evaluating matters for accrual and disclosure purposes, we take into consideration factors such as our historical experience with matters of a similar nature, the specific facts and circumstances asserted, the likelihood of our prevailing, and the severity of any potential loss. We reevaluate and update our accruals as matters progress over time.

Based on our assessment of outstanding litigation and claims as of September 30, 2014, the Company has determined that it is not reasonably possible that these lawsuits will individually, or in the aggregate, materially affect our results of operations, financial condition or cash flows. However, the outcome of any litigation is inherently uncertain and there can be no assurance that any expense, liability or damages that may ultimately result from the resolution of these matters will be covered by our insurance or will not be in excess of amounts recognized or provided by insurance coverage and will not have a material adverse effect on our operating results, financial condition or cash flows.

Related_Party_Transactions

Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	11. Related party transactions
	The Company engages Mark Kroll, a member of the Board of Directors, to provide consulting services. Expenses relating to these services for the three months ended September 30, 2014 and 2013 were approximately $50,000 and $59,000, respectively. Expenses relating to these services for the nine months ended September 30, 2014 and 2013 were approximately $121,000 and $125,000, respectively. At September 30, 2014 and December 31, 2013, the Company had accrued liabilities for these consulting services of approximately $26,000 and $12,000, respectively.

Employee_Benefit_Plans

Employee Benefit Plans	9 Months Ended
Employee Benefit Plans	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	12. Employee benefit plans
	The Company has a defined contribution profit sharing 401(k) plan for eligible employees, which is qualified under Sections 401(a) and 401(k) of the Internal Revenue Code of 1986, as amended. Employees are entitled to make tax-deferred contributions of up to the maximum allowed by law of their eligible compensation.
	In addition, during 2013, the Company implemented a non-qualified deferred compensation plan for certain executives, key employees and non-employee directors through which participants may elect to postpone the receipt and taxation of a portion of their compensation, including stock-based compensation, received from the Company. The non-qualified deferred compensation plan allows eligible participants to defer up to 80% of their base salary and up to 100% of other types of compensation. The plan also allows for (i) matching and discretionary employer contributions and (ii) the deferral of vested RSU awards. Employee deferrals are deemed 100% vested upon contribution. Distributions from the plan are made upon retirement, death, separation of service, specified date or upon the occurrence of an unforeseeable emergency. Distributions can be paid in a variety of forms from lump sum to installments over a period of years. Participants in the plan are entitled to select from a wide variety of investments available under the plan for their cash contributions and are allocated gains or losses based upon the performance of the investments selected by the participant. All gains or losses are allocated fully to plan participants and the Company does not guarantee a rate of return on deferred balances. Assets related to this plan consist of corporate-owned life insurance contracts and are included in Other assets in the condensed consolidated balance sheets. Participants have no rights or claims with respect to any plan assets and any such assets are subject to the claims of the Company’s general creditors.
	Contributions to the plans are made by both the employee and the Company. Company contributions are based on the level of employee contributions and are immediately vested. The Company’s matching contributions to the 401(k) plan for the three months ended September 30, 2014 and 2013, were both approximately $0.2 million. The Company’s matching contributions to the 401(k) plan for the nine months ended September 30, 2014 and 2013, were $0.6 million and $0.5 million, respectively. The Company has recorded matching contributions to the non-qualified deferred compensation plan related to the three and nine months ended September 30, 2014, of approximately $6,000 and $20,000, respectively. The Company made matching contributions of approximately $6,000 to the non-qualified deferred compensation plan for the three and nine months ended September 30, 2013. Future matching or profit sharing contributions to the plans are at the Company’s sole discretion.

Segment_Data

Segment Data	9 Months Ended
Segment Data	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Data	'
	13. Segment data
	The Company’s operations are comprised of two reportable segments: the manufacture and sale of CEWs, accessories and other products and services (the “TASER Weapons” segment); and the video business, which includes the TASER Cam, AXON video products and EVIDENCE.com (the “EVIDENCE.com & Video” segment). The Company includes only revenues and costs directly attributable to the EVIDENCE.com & Video segment in that segment. Included in EVIDENCE.com & Video segment costs are costs of sales for both products and services, overhead allocation based on direct labor, selling expense for the video sales team, video product management expenses, video trade shows and related expenses, and research and development for products included in the EVIDENCE.com & Video segment. All other costs are included in the TASER Weapons segment. The CODM does not review assets by segment as part of the financial information provided; therefore, no asset information is provided in the following tables.
	Information relative to the Company’s reportable segments is as follows (in thousands):


		Three Months Ended September 30, 2014							Three Months Ended September 30, 2013
		TASER		EVIDENCE.com					TASER		EVIDENCE.com
		Weapons		& Video			Total		Weapons		& Video			Total
	Product sales	$	40,010	$	3,181		$	43,191	$	31,627	$	3,103		$	34,730
	Service revenue		—		1,158			1,158		—		467			467

	Net sales		40,010		4,339			44,349		31,627		3,570			35,197

	Cost of products sold		12,443		2,695			15,138		10,908		1,896			12,804
	Cost of services delivered		—		498			498		—		297			297

	Gross margin		27,567		1,146			28,713		20,719		1,377			22,096
	Sales, general and administrative expenses		10,028		2,413			12,441		11,131		1,645			12,776
	Research and development expenses		1,050		2,709			3,759		1,160		1,279			2,439

	Income (loss) from operations	$	16,489	$	(3,976	)	$	12,513	$	8,428	$	(1,547	)	$	6,881

	Purchases of property and equipment	$	803	$	41		$	844	$	230	$	105		$	335
	Purchases of intangible assets		14		2			16		67		2			69
	Depreciation and amortization		1,010		91			1,101		1,025		63			1,088

		Nine Months Ended September 30, 2014							Nine Months Ended September 30, 2013
		TASER		EVIDENCE.com					TASER		EVIDENCE.com
		Weapons		& Video			Total		Weapons		& Video			Total
	Product sales	$	105,160	$	9,812		$	114,972	$	89,902	$	6,853		$	96,755
	Service revenue		—		2,737			2,737		—		1,051			1,051

	Net sales		105,160		12,549			117,709		89,902		7,904			97,806

	Cost of products sold		34,024		8,111			42,135		31,535		4,440			35,975
	Cost of services delivered		—		1,439			1,439		—		1,542			1,542

	Gross margin		71,136		2,999			74,135		58,367		1,922			60,289
	Sales, general and administrative expenses		32,218		7,516			39,734		30,622		4,276			34,898
	Research and development expenses		2,660		8,160			10,820		3,126		3,318			6,444

	Income (loss) from operations	$	36,258	$	(12,677	)	$	23,581	$	24,619	$	(5,672	)	$	18,947

	Purchases of property and equipment	$	1,836	$	230		$	2,066	$	828	$	346		$	1,174
	Purchases of intangible assets		123		2			125		260		11			271
	Depreciation and amortization		3,078		290			3,368		2,998		1,038			4,036

Organization_and_Summary_of_Si1

Organization and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation, Preparation and Use of Estimates	'
	a. Basis of presentation, preparation and use of estimates
	These unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information related to the Company’s organization, significant accounting policies and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“US GAAP”) has been condensed or omitted. The accounting policies followed in the preparation of these unaudited condensed consolidated financial statements are consistent with those followed in the Company’s annual consolidated financial statements for the year ended December 31, 2013, as filed on Form 10-K. In the opinion of management, these unaudited condensed consolidated financial statements contain all material adjustments, consisting only of normal recurring adjustments, necessary to fairly state the Company’s financial position, results of operations and cash flows for the periods presented and the presentations and disclosures herein are adequate when read in conjunction with the Company’s Form 10-K for the year ended December 31, 2013. The results of operations for the three and nine months ended September 30, 2014 and 2013 are not necessarily indicative of the results to be expected for the full year (or any other period). Significant estimates and assumptions in these unaudited condensed consolidated financial statements include:

		•		product warranty reserves,

		•		inventory valuation reserves,

		•		revenue recognition allocated in multiple-deliverable arrangements,

		•		the carrying value of long-lived assets including property and equipment, goodwill and other intangible assets,

		•		recognition, measurement and valuation of current and deferred income taxes,

		•		fair value of stock awards issued, the estimated vesting period for performance-based stock awards and forfeiture rates, and

		•		recognition and measurement of contingencies and accrued litigation expense.
	Actual results could differ materially from these estimates.
Segment Information	'
	b. Segment information
	The Company is comprised of two reportable segments: the manufacture and sale of CEWs, accessories and other related products and services (the “TASER Weapons” segment); and the video business which includes the TASER Cam, AXON video products and EVIDENCE.com (the “EVIDENCE.com & Video” segment). Reportable segments are determined based on discrete financial information reviewed by the Company’s Chief Executive Officer who is the Chief Operating Decision Maker (the “CODM”) for the Company. The Company organizes and reviews operations based on products and services, and currently, there are no operating segments that are aggregated. The Company performs an annual analysis of its reportable segments. Additional information related to the Company’s segments is summarized in Note 13.
Geographic Information and Major Customers	'
	c. Geographic information and major customers
	For the three and nine months ended September 30, 2014 and 2013, net sales by geographic area were as follows (dollars in thousands):


			Three Months Ended September 30,											Nine Months Ended September 30,
			2014						2013					2014				2013
	United States		$	37,605			84.8	%	$	31,483		89.4	%	$	95,336	81	%	$	86,036	88	%
	Other Countries			6,744			15.2			3,714		10.6			22,373	19			11,770	12

	Total		$	44,349			100	%	$	35,197		100	%	$	117,709	100	%	$	97,806	100	%

	Sales to customers outside of the United States are typically denominated in U.S. dollars and are attributed to each country based on the shipping address of the distributor or customer. For the three and nine months ended September 30, 2014 and 2013, no individual country outside of the United States represented greater than 10% of total net sales. Sales in the international market generally are larger and occur more intermittently than in the domestic market due to the profile of the Company’s customers.
	For the three months ended September 30, 2014, one customer represented approximately 11.0% of total net sales. For the nine months ended September 30, 2014, no customers represented more than 10% of total net sales. In the three and nine months ended September 30, 2013, one distributor represented approximately 12.2% and 12.1% of total net sales, respectively. At September 30, 2014, the Company had receivables from two customers comprising approximately 27.2% of the aggregate accounts receivable balance, and at December 31, 2013, the Company had receivables from one customer comprising approximately 17.4% of the aggregate accounts receivable balance.
Income Per Common Share	'
	d. Income per common share
	Basic income per common share is computed by dividing net income by the weighted average number of common shares outstanding during the periods presented. Diluted income per share is calculated based on the weighted average number of common shares outstanding for the period plus the dilutive effect of stock options and restricted stock units using the treasury stock method. The calculation of the weighted average number of shares outstanding and income per share are as follows (in thousands, except per share data):


			Three Months Ended September 30,						Nine Months Ended September 30,
			2014			2013			2014		2013
	Numerator for basic and diluted earnings per share:
	Net income		$	7,558		$	5,114		$	14,832	$	12,869

	Denominator:
	Weighted average shares outstanding — basic			52,475			51,342			53,013		51,727
	Dilutive effect of stock-based awards			1,346			1,979			1,537		1,917

	Diluted weighted average shares outstanding			53,821			53,321			54,550		53,644

	Anti-dilutive stock-based awards excluded			336			565			328		898

	Net income per common share:
	Basic		$	0.14		$	0.1		$	0.28	$	0.25
	Diluted		$	0.14		$	0.1		$	0.27	$	0.24
Revenue Recognition	'
	e. Revenue recognition
	The Company derives revenue from two primary sources: (1) the sale of physical products, including CEWs, AXON cameras, corresponding extended warranties, and related accessories such as cartridges and batteries, and (2) subscription to EVIDENCE.com, the Company’s digital evidence management Software-as-a-Solution (“SaaS”) (including data storage fees and other ancillary services), which includes varying levels of support. To a lesser extent, the Company also recognizes training and other revenue. Revenue is recognized when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, title has transferred, the price is fixed and collectability is reasonably assured. Extended warranty revenue, SaaS revenue and related data storage revenue are recognized ratably over the term of the contract beginning on the commencement date of each contract.

	Revenue arrangements with multiple deliverables are divided into separate units and revenue is allocated using the relative selling price method based upon vendor-specific objective evidence of selling price, or third-party evidence of selling price if vendor-specific objective evidence does not exist. If neither vendor-specific objective evidence nor third-party evidence exists, management uses its best estimate of selling price.
	The Company offers customers the right to purchase extended warranties that include additional services and coverage beyond the limited warranty for certain products. Revenue for extended warranty purchases is deferred at the time of sale and recognized over the warranty period commencing on the date of sale. Extended warranties range from one to five years.
	EVIDENCE.com and AXON cameras are sold separately, but in most instances are purchased together. In these instances, customers typically purchase and pay for the equipment and one year of EVIDENCE.com in advance. Additional years of service are generally billed annually over a specified service term, which has typically ranged from one to five years. AXON equipment has stand-alone value and represents a deliverable that is provided to the customer at the time of sale, while EVIDENCE.com services are provided over the specified term of the contract. The Company recognizes revenue for the AXON equipment at the time of the sale consistent with the discussion of multiple deliverable arrangements above. Revenue for EVIDENCE.com is deferred at the time of the sale and recognized over the service period. In certain circumstances, not all requirements are met for the recognition of revenue relative to equipment sold in conjunction with EVIDENCE.com at the time the equipment is provided to customers. In such circumstances, based on limitations associated with the arrangement consideration, the revenue may be recognized ratably over the specified term of the contract, or when all conditions for revenue recognition are met, if sooner.
	The Company offers the TASER Assurance Program (“TAP”) whereby a customer purchasing a product and joining the program will have the right to trade-in the original product for a new product of the same or like model in the future. Upon joining TAP, customers also receive an extended warranty for the initial products purchased and spare inventory. Under this program the customer generally pays additional annual installments over the contract period, generally three to five years. The Company records consideration received related to the future purchase as deferred revenue until all revenue recognition criteria are met, which is generally at the end of the contract period when the product is delivered.
	Sales tax collected on sales is netted against government remittances and thus, recorded on a net basis. Training revenue is recorded as the service is provided.
	Deferred revenue consists of billings and/or payments received in advance related to products and services for which the criteria for revenue recognition have not yet been met. Deferred revenue that will be recognized during the succeeding twelve month period is recorded as current deferred revenue and the remaining portion is recorded as long-term. Deferred revenue does not include future revenue from multi-year contracts for which no invoice has yet been created. Generally, customers are billed in annual installments. See Note 5 for further discussion of the Company’s deferred revenue.
	Sales are typically made on credit and the Company generally does not require collateral. Management performs ongoing credit evaluations of its customers’ financial condition and maintains an allowance for estimated potential losses. Uncollectable accounts are charged to expense when deemed uncollectible, and accounts and notes receivable are presented net of an allowance for doubtful accounts. This allowance represents management’s best estimate and is based on their judgment after considering a number of factors, including third-party credit reports, actual payment history, cash discounts, customer-specific financial information and broader market and economic trends and conditions.
	The Company may, from time to time, enter into agreements with its customers to finance a customer’s purchases with a note receivable that may range in terms up to five years. Sales are recorded at the fair value of the note, which is generally sold and assigned to a third-party financing company. The terms of the assignments are such that the Company expects to receive payment within 30 days of the original sale. The assignments are non-recourse and the Company has no obligations or continuing involvement with these notes receivable. Prior to entering into an assignment, the Company evaluates the credit quality and financial condition of the third-party financing company. As of September 30, 2014 there was $0.8 million in accounts and notes receivable related to such arrangements. No such balances were recorded at December 31, 2013. The Company did not record any interest income on notes receivable due to the minimal holding periods, nor has the Company recognized gains or losses upon the assignment of these notes.
Warranty Costs	'
	f. Warranty costs
	The Company warranties its CEWs, StrikeLight, AXON cameras and E-Docks from manufacturing defects on a limited basis for a period of one year after purchase and, thereafter, will replace any defective unit for a fee. Estimated costs for the standard warranty are charged to cost of products sold and services delivered when revenue is recorded for the related product. Future warranty costs are estimated based on historical data related to returns and warranty costs on a quarterly basis and this rate is applied to current product sales. Historically, reserve amounts have been increased if management becomes aware of a component failure that could result in larger than anticipated returns from customers. The accrued warranty liability is reviewed quarterly to evaluate whether it sufficiently reflects the remaining warranty obligations based on the anticipated expenditures over the balance of the warranty obligation period, and adjustments are made when actual warranty claim experience differs from estimates. Costs related to extended warranties are charged to cost of products sold and services delivered when incurred.
	The reserve for warranty returns is included in accrued liabilities on the condensed consolidated balance sheets. The Company recognized additional warranty expense during the first nine months of 2014 due to a change in estimate regarding the Company’s first generation E-Dock as a result of an updated version launched in the first quarter. The Company also recognized additional warranty expense during the nine months ended September 30, 2013 due to a change in estimate for the AXON flex and X26P CEWs based on the analysis of return data for their first year of sales. Changes in the Company’s estimated product warranty liabilities are as follows (in thousands):


			Nine Months Ended September 30,
			2014			2013
	Balance, beginning of period,		$	955		$	484
	Utilization of accrual			(646	)		(420	)
	Warranty expense			517			644

	Balance, end of period,		$	826		$	708

Fair Value of Financial Instruments	'
	g. Fair value of financial instruments
	The Company uses the fair value framework, which prioritizes the inputs to valuation techniques for measuring financial assets and liabilities measured on a recurring basis and for non-financial assets and liabilities when these items are re-measured. Fair value is considered to be the exchange price in an orderly transaction between market participants, to sell an asset or transfer a liability at the measurement date. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. The Company categorizes each of its fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are:

		•		Level 1 – Valuation techniques in which all significant inputs are unadjusted quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.

		•		Level 2 – Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices for assets or liabilities that are identical or similar to the assets or liabilities being measured from markets that are not active. Also, model-derived valuations in which all significant inputs and significant value drivers are observable in active markets are Level 2 valuation techniques.

		•		Level 3 – Valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are valuation technique inputs that reflect the Company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.
	The Company has cash equivalents and investments that at September 30, 2014 and December 31, 2013 were comprised of money market funds, state and municipal obligations, corporate bonds, and certificates of deposits. See additional disclosure regarding the fair value of the Company’s cash equivalents and investments in Note 2. Included in the balance of Other assets as of September 30, 2014 is $1.0 million related to corporate-owned life insurance policies which are used to fund the Company’s deferred compensation plan. The Company determines the fair value of its insurance contracts by obtaining the cash surrender value of the contracts from the policy issuer, a Level 2 valuation technique.
	The Company’s financial instruments also include accounts and notes receivable, accounts payable and accrued liabilities. Due to the short-term nature of these instruments, their fair values approximate their carrying values on the balance sheet.
Impairment of Long-Lived Assets	'
	h. Impairment of Long-Lived Assets
	Management evaluates whether events and circumstances have occurred that indicate the remaining estimated useful life of long-lived assets and identifiable intangible assets may warrant revision or that the remaining balance of these assets may not be recoverable. Such circumstances could include, but are not limited to, a change in the product mix, a change in the way products are created, produced or delivered, or a significant change in the way products are branded and marketed. In performing the review for recoverability, management estimates the future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. The amount of the impairment loss, if impairment exists, is calculated based on the excess of the carrying amounts of the assets over their estimated fair value computed using discounted cash flows. No impairment losses were recorded in the three or nine months ended September 30, 2014 and 2013.
Recently Issued Accounting Guidance	'
	i. Recently issued accounting guidance
	In June 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-12, “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period” (“ASU 2014-12”). The amendments in ASU 2014-12 require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Accounting Standards Codification Topic No. 718, “Compensation—Stock Compensation” (“ASC 718”), as it relates to awards with performance conditions that affect vesting to account for such awards. The amendments in ASU 2014-12 are effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. Early adoption is permitted. Entities may apply the amendments in ASU 2014-12 either: (i) prospectively to all awards granted or modified after the effective date; or (ii) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. The Company is currently evaluating the potential impact of the adoption of this guidance on its consolidated financial statements, however does not expect there to be a material impact at this time.
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, ASU 2014-09 provides for the following steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. ASU 2014-09 supersedes the revenue recognition requirements in Accounting Standards Codification Topic No. 605, “Revenue Recognition,” most industry-specific guidance throughout the industry topics of the Accounting Standards Codification, and some cost guidance related to construction-type and production-type contracts. ASU 2014-09 is effective for public entities for annual periods and interim periods within those annual periods beginning after December 15, 2016. Early adoption is not permitted. Companies may use either a full retrospective or a modified retrospective approach to adopt ASU 2014-09. The Company is currently evaluating the potential impact of the adoption of this guidance on its consolidated financial statements.
	In July 2013, the FASB issued ASU No. 2013-11 to standardize the balance sheet presentation of unrecognized tax benefits. This update applies to all entities that have unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists at the reporting date. The new guidance was effective for fiscal years beginning after December 15, 2013. The adoption of this guidance resulted in an immaterial reclassification on the Company’s consolidated balance sheet.
Reclassification of Prior Year Presentation	'
	j. Reclassification of Prior Year Presentation
	Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations.

Organization_and_Summary_of_Si2

Organization and Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Net Sales by Geographic Area	'
	For the three and nine months ended September 30, 2014 and 2013, net sales by geographic area were as follows (dollars in thousands):


		Three Months Ended September 30,											Nine Months Ended September 30,
		2014						2013					2014				2013
	United States	$	37,605			84.8	%	$	31,483		89.4	%	$	95,336	81	%	$	86,036	88	%
	Other Countries		6,744			15.2			3,714		10.6			22,373	19			11,770	12

	Total	$	44,349			100	%	$	35,197		100	%	$	117,709	100	%	$	97,806	100	%

Weighted Average Number of Shares Outstanding and Income Per Share	'
	The calculation of the weighted average number of shares outstanding and income per share are as follows (in thousands, except per share data):


		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Numerator for basic and diluted earnings per share:
	Net income	$	7,558		$	5,114		$	14,832	$	12,869

	Denominator:
	Weighted average shares outstanding — basic		52,475			51,342			53,013		51,727
	Dilutive effect of stock-based awards		1,346			1,979			1,537		1,917

	Diluted weighted average shares outstanding		53,821			53,321			54,550		53,644

	Anti-dilutive stock-based awards excluded		336			565			328		898

	Net income per common share:
	Basic	$	0.14		$	0.1		$	0.28	$	0.25
	Diluted	$	0.14		$	0.1		$	0.27	$	0.24
Summary of Changes in Estimated Product Warranty Liabilities	'
	Changes in the Company’s estimated product warranty liabilities are as follows (in thousands):


		Nine Months Ended September 30,
		2014			2013
	Balance, beginning of period,	$	955		$	484
	Utilization of accrual		(646	)		(420	)
	Warranty expense		517			644

	Balance, end of period,	$	826		$	708

Cash_Cash_Equivalents_and_Inve1

Cash, Cash Equivalents, and Investments (Tables)	9 Months Ended
Cash, Cash Equivalents, and Investments (Tables)	Sep. 30, 2014
Cash and Cash Equivalents [Abstract]	'
Summary of Cash, Cash Equivalents and Held-to-Maturity Investments by Type	'
	The following tables summarizes the Company’s cash, cash equivalents and held-to-maturity investments at September 30, 2014 and December 31, 2013 (in thousands):


		As of September 30, 2014
		Amortized		Gross		Gross			Fair		Cash and		Short-Term		Long-Term
		Cost		Unrealized		Unrealized			Value		Cash		Investments		Investments
				Gains		Losses					Equivalents
	Cash	$	36,392	$	—	$	—		$	36,392	$	36,392	$	—	$	—
	Level 1:
	Money market funds		2,223		—		—			2,223		2,223		—		—
	Corporate bonds		15,455		3		(20	)		15,438		—		12,811		2,644

	Subtotal		17,678		3		(20	)		17,661		2,223		12,811		2,644

	Level 2:
	State and municipal obligations		17,466		21		—			17,487		—		14,689		2,777
	Certificates of deposit		2,473		—		—			2,473		—		1,483		990

	Subtotal		19,939		21		—			19,960		—		16,172		3,767

	Total	$	74,009	$	24	$	(20	)	$	74,013	$	38,615	$	28,983	$	6,411


		As of December 31, 2013
		Amortized		Gross		Gross			Fair		Cash and		Short-Term		Long-Term
		Cost		Unrealized		Unrealized			Value		Cash		Investments		Investments
				Gains		Losses					Equivalents
	Cash	$	37,196	$	—	$	—		$	37,196	$	37,196	$	—	$	—
	Level 1:
	Money market funds		5,030		—		—			5,030		5,030		—		—
	Corporate bonds		7,743		3		(14	)		7,732		—		1,102		6,641

	Subtotal		12,773		3		(14	)		12,762		5,030		1,102		6,641

	Level 2:
	State and municipal obligations		10,807		14		—			10,821		45		5,626		5,136
	Certificates of deposit		2,619		—		—			2,619		—		2,373		246

	Subtotal		13,426		14		—			13,440		45		7,999		5,382

	Total	$	63,395	$	17	$	(14	)	$	63,398	$	42,271	$	9,101	$	12,023

Summary of Amortized Cost and Fair Value of Short-term and Long-term Investments	'
	The following table summarizes the amortized cost and fair value of the short-term and long-term investments held by the Company at September 30, 2014 by contractual maturity (in thousands):


		Amortized Cost		Fair Value
	Due in less than one year	$	28,983	$	28,989
	Due after one year, through two years		6,163		6,167
	Due after two years		248		242

	Total short-term and long-term investments	$	35,394	$	35,398

Inventory_Tables

Inventory (Tables)	9 Months Ended
Inventory (Tables)	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories as of September 30, 2014 and December 31, 2013, consisted of the following (in thousands):


		September 30,			December 31,
		2014			2013
	Raw materials	$	10,697		$	7,376
	Work-in-process		134			44
	Finished goods		6,043			4,688
	Reserve for excess and obsolete inventory		(746	)		(999	)

	Total inventory	$	16,128		$	11,109

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	9 Months Ended
Goodwill and Intangible Assets (Tables)	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Other Intangible Assets Other than goodwill	'
	Other intangible assets consisted of the following at September 30, 2014 and December 31, 2013 (in thousands):


				September 30, 2014							31-Dec-13
		Useful Life		Gross		Accumulated			Net Carrying		Gross		Accumulated			Net Carrying
				Carrying		Amortization			Amount		Carrying		Amortization			Amount
				Amount							Amount
	Amortized:
	Domain names	5 Years		$	125	$	(111	)	$	14	$	125	$	(102	)	$	23
	Issued patents	4 to 15 Years			1,735		(524	)		1,211		1,529		(441	)		1,088
	Issued trademarks	9 to 11 Years			558		(191	)		367		437		(147	)		290

	Total amortized				2,418		(826	)		1,592		2,091		(690	)		1,401

	Not amortized:
	TASER trademark				900					900		900					900
	Patents and trademarks pending				615					615		1,016					1,016

	Total not amortized				1,515					1,515		1,916					1,916

	Total intangible assets			$	3,933	$	(826	)	$	3,107	$	4,007	$	(690	)	$	3,317

Estimated Amortization Expense of Intangible Assets	'
	Estimated amortization expense of intangible assets for the remaining three months of 2014, the next five years ended December 31, and thereafter is as follows (in thousands):


	2014 (remaining three months)	$	46
	2015		178
	2016		171
	2017		167
	2018		157
	2019		147
	Thereafter		726

	Total	$	1,592

Deferred_Revenue_Tables

Deferred Revenue (Tables)	9 Months Ended
Deferred Revenue (Tables)	Sep. 30, 2014
Revenue Recognition [Abstract]	'
Summary of Deferred Revenue	'
	Deferred revenue consisted of the following at September 30, 2014 and December 31, 2013 (in thousands):


		September 30,		December 31,
		2014		2013
	Warranty	$	20,275	$	15,889
	EVIDENCE.com		6,864		4,026
	TASER Assurance Program		2,771		138
	Other		89		166

	Total deferred revenue		29,999		20,219
	Total current portion of deferred revenue		10,033		6,878

	Total long-term portion of deferred revenue	$	19,966	$	13,341

Accrued_Liabilities_Tables

Accrued Liabilities (Tables)	9 Months Ended
Accrued Liabilities (Tables)	Sep. 30, 2014
Payables and Accruals [Abstract]	'
Accrued Liabilities	'
	Accrued liabilities consisted of the following at September 30, 2014 and December 31, 2013 (in thousands):


		September 30,		December 31,
		2014		2013
	Accrued salaries and benefits	$	3,070	$	2,328
	Accrued judgments and settlements		330		3,350
	Accrued professional fees		368		286
	Accrued warranty expense		826		955
	Accrued income and other taxes		349		437
	Other accrued expenses		1,910		1,484

	Accrued liabilities	$	6,853	$	8,840

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	9 Months Ended
Stockholders' Equity (Tables)	Sep. 30, 2014
Equity [Abstract]	'
Summary of Restricted Stock Unit Activity	'
	The following table summarizes RSU activity for the nine months ended September 30, 2014 (number of units and aggregate intrinsic value in thousands):


		Number of			Weighted		Aggregate
		Units			Average Grant-		Intrinsic Value
					Date Fair Value
	Units outstanding, beginning of period		1,279		$	9.67
	Granted		502			16.73
	Released		(369	)		7.51
	Forfeited		(144	)		12.83

	Units outstanding, end of period		1,268			12.75	$	19,575

Summary of the Company's Stock Options Activity	'
	The following table summarizes stock option activity for the nine months ended September 30, 2014 (number of options and aggregate intrinsic value in thousands):


		Number of			Weighted		Weighted		Aggregate
		options			Average		Average		Intrinsic Value
					Exercise Price		Remaining
							Contractual
							Life (years)
	Options outstanding, beginning of period		3,366		$	6.15
	Granted		—
	Exercised		(1,218	)		7.06
	Expired / forfeited		(54	)		10.29

	Options outstanding, end of period		2,094			5.51		4.7	$	20,925

	Exercisable at September 30, 2014		2,055			5.53		4.7		20,508

	Expected to vest after September 30, 2014		27			4.73		4.89		287

Share-Based Compensation	'
	Share-based compensation was classified as follows (in thousands):


		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2014			2013		2014		2013
	Cost of products sold	$	61		$	50	$	149	$	134
	Sales, general and administrative expenses		940			736		2,598		2,293
	Research and development expenses		436			177		1,374		479

	Total share-based compensation	$	1,437		$	963	$	4,121	$	2,906

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Loss Contingencies

Plaintiff

Served

Jurisdiction

Claim Type

Status

Grable

8-Aug

6th Judicial Circuit Court, Pinellas County, FL

Training Injury

Discovery Phase

Koon

8-Dec

17th Judicial Circuit Court, Broward County, FL

Training Injury

Discovery Phase

Derbyshire

9-Nov

Ontario, Canada Superior Court of Justice

Officer Injury

Discovery Phase

Thompson

10-Mar

11th Judicial Circuit Court, Miami-Dade County, FL

Suspect Injury During Arrest

Discovery Phase

Doan

10-Apr

The Queens Bench Alberta, Red Deer Judicial Dist.

Wrongful Death

Discovery Phase

Shymko

10-Dec

The Queens Bench, Winnipeg Centre, Manitoba

Wrongful Death

Pleading Phase

Juran

10-Dec

Hennepin County District Court, 4th Judicial District

Officer Injury

Pleading Phase

Wilson

11-May

US District Court, ED MO

Wrongful Death

Trial scheduled

for Nov. 2014

Ramsey

12-Jan

17th Judicial Circuit Court, Broward County, FL

Wrongful Death

Discovery Phase

Firman

12-Apr

Ontario, Canada Superior Court of Justice

Wrongful Death

Pleading Phase

Ricks

12-May

US District Court, WD LA

Wrongful Death

Motion Phase

Miller

13-Jan

New Castle County Superior Court, DE

Wrongful Death

Discovery Phase

Rascom

14-Apr

US District Court, AZ

Wrongful Death

Pleading Phase

Schrock

14-Sep

San Bernardino County Superior Court, CA

Wrongful Death

Pleading Phase

Ward

14-Oct

Richmond County Superior Court, GA

Officer Fired

Pleading Phase

Moore

14-Oct

St. Louis County Circuit Court, MO

Wrongful Death

Pleading Phase

Summary of Other Product Litigation Matters

In addition, other product litigation matters in which the Company is involved that are currently on appeal are listed below:

Plaintiff

Month

Jurisdiction

Claim Type

Status

Served

Glowczenski

4-Oct

US District Court, ED NY

Wrongful Death

Notice of Appeal filed Sep. 2013; Opening Brief was filed Jan. 2014; Answering Brief filed Apr. 2014.

Mitchell

12-Apr

US District Court, ED MI

Wrongful Death

Notice of Appeal filed Aug. 2014

Summary of Cases Dismissed or Judgment Entered

Plaintiff

Month

Jurisdiction

Claim Type

Status

Served

Faltesek

14-Apr

Harris County District Court, TX

Wrongful Death

Voluntary Dismissal

Mitchell

12-Apr

US District Court, ED MI

Wrongful Death

Motion for

Summary Judgment

Granted

McCue

14-Mar

US District Court, District of Maine

Wrongful Death

Voluntary Dismissal

Slade

13-Dec

US District Court, ED TX

Wrongful Death

Voluntary Dismissal

Goodard

14-Jul

Pinellas County Circuit Court, FL

Wrongful Death

Voluntary Dismissal

Parker

14-Jul

US District Court, SD TX

Suspect Injury During Arrest

Voluntary Dismissal

Information Regarding the Company's Insurance Coverage

The following table provides information regarding the Company’s product liability insurance. Remaining insurance coverage is based on information received from the Company’s insurance provider (in millions).

Policy Year

Policy

Insurance

Deductible

Defense

Remaining

Active Cases and Cases on Appeal

Start Date

End Date

Coverage

Amount

Costs

Insurance

Covered

Coverage

2004

12/1/03

12/1/04

0.1

Glowczenski

2005

12/1/04

12/1/05

0.3

n/a

2006

12/1/05

12/1/06

0.3

3.7

n/a

2007

12/1/06

12/1/07

0.3

n/a

2008

12/1/07

12/15/08

0.5

—

Grable, Koon

2009

12/15/08

12/15/09

Derbyshire

2010

12/15/09

12/15/10

Thompson, Shymko, Doan, Juran

2011

12/15/10

12/15/11

Wilson

Jan – Jun 2012

12/15/11

6/25/12

Ramsey, Firman, Ricks, Mitchell

Jul – Dec 2012

6/25/12

12/15/12

n/a

2013

12/15/12

12/15/13

Miller

2014

12/15/13

12/15/14

Rascom, Schrock, Moore, Ward

Segment_Data_Tables

Segment Data (Tables)	9 Months Ended
Segment Data (Tables)	Sep. 30, 2014
Segment Reporting [Abstract]	'
Summary of Operational Information Relative to the Company's Reportable Segments	'
	Information relative to the Company’s reportable segments is as follows (in thousands):


		Three Months Ended September 30, 2014							Three Months Ended September 30, 2013
		TASER		EVIDENCE.com					TASER		EVIDENCE.com
		Weapons		& Video			Total		Weapons		& Video			Total
	Product sales	$	40,010	$	3,181		$	43,191	$	31,627	$	3,103		$	34,730
	Service revenue		—		1,158			1,158		—		467			467

	Net sales		40,010		4,339			44,349		31,627		3,570			35,197

	Cost of products sold		12,443		2,695			15,138		10,908		1,896			12,804
	Cost of services delivered		—		498			498		—		297			297

	Gross margin		27,567		1,146			28,713		20,719		1,377			22,096
	Sales, general and administrative expenses		10,028		2,413			12,441		11,131		1,645			12,776
	Research and development expenses		1,050		2,709			3,759		1,160		1,279			2,439

	Income (loss) from operations	$	16,489	$	(3,976	)	$	12,513	$	8,428	$	(1,547	)	$	6,881

	Purchases of property and equipment	$	803	$	41		$	844	$	230	$	105		$	335
	Purchases of intangible assets		14		2			16		67		2			69
	Depreciation and amortization		1,010		91			1,101		1,025		63			1,088

		Nine Months Ended September 30, 2014							Nine Months Ended September 30, 2013
		TASER		EVIDENCE.com					TASER		EVIDENCE.com
		Weapons		& Video			Total		Weapons		& Video			Total
	Product sales	$	105,160	$	9,812		$	114,972	$	89,902	$	6,853		$	96,755
	Service revenue		—		2,737			2,737		—		1,051			1,051

	Net sales		105,160		12,549			117,709		89,902		7,904			97,806

	Cost of products sold		34,024		8,111			42,135		31,535		4,440			35,975
	Cost of services delivered		—		1,439			1,439		—		1,542			1,542

	Gross margin		71,136		2,999			74,135		58,367		1,922			60,289
	Sales, general and administrative expenses		32,218		7,516			39,734		30,622		4,276			34,898
	Research and development expenses		2,660		8,160			10,820		3,126		3,318			6,444

	Income (loss) from operations	$	36,258	$	(12,677	)	$	23,581	$	24,619	$	(5,672	)	$	18,947

	Purchases of property and equipment	$	1,836	$	230		$	2,066	$	828	$	346		$	1,174
	Purchases of intangible assets		123		2			125		260		11			271
	Depreciation and amortization		3,078		290			3,368		2,998		1,038			4,036

Organization_and_Summary_of_Si3

Organization and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Segment

Total Net Sales [Member]

Customer Concentration Risk [Member]

Distributor [Member]

Individual Country Outside of the United States [Member]

Maximum [Member]

Minimum [Member]

Extended Product Warranty [Member]

Total Net Sales [Member]

Accounts Receivable [Member]

Total Net Sales [Member]

Geographic Concentration Risk [Member]

Individual Country Outside of the United States [Member]

Maximum [Member]

Minimum [Member]

Total Net Sales [Member]

Customer Concentration Risk [Member]

Customer

Total Net Sales [Member]

Summary Of Significant Accounting Policy [Line Items]

Number of reportable segments of company

Aggregated operating segments

Sales to customers, countries outside of the United States

Percentage of risk concentration

100.00%

11.00%

10.00%

27.20%

17.40%

12.20%

12.10%

10.00%

Period of extended warranty after expiration of standard warranty

'5 years

'1 year

Service term for services purchased

'5 years

'1 year

Contractual Period of entities assurance program

'5 years

'3 years

Note receivable in term

'5 years

Company receive payment

'30 days

Accounts and notes receivable related to purchases

$0.80

Warranty period

'1 year

Corporate owned life insurance policies fair value

Impairment charge

Organization_and_Summary_of_Si4

Organization and Summary of Significant Accounting Policies - Net Sales by Geographic Area (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]	'	'	'	'
Net sales by Geographic Area	$44,349	$35,197	$117,709	$97,806
Total Net Sales [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales by Geographic Area	44,349	35,197	117,709	97,806
Percentage of Net sales by Geographic Area	100.00%	100.00%	100.00%	100.00%
United States [Member] \| Total Net Sales [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales by Geographic Area	37,605	31,483	95,336	86,036
Percentage of Net sales by Geographic Area	84.80%	89.40%	81.00%	88.00%
Other Countries [Member] \| Total Net Sales [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net sales by Geographic Area	$6,744	$3,714	$22,373	$11,770
Percentage of Net sales by Geographic Area	15.20%	10.60%	19.00%	12.00%

Organization_and_Summary_of_Si5

Organization and Summary of Significant Accounting Policies - Weighted Average Number of Shares Outstanding and Income Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator for basic and diluted earnings per share:	'	'	'	'
Net income	$7,558	$5,114	$14,832	$12,869
Denominator:	'	'	'	'
Weighted average shares outstanding-basic	52,475	51,342	53,013	51,727
Dilutive effect of stock-based awards	1,346	1,979	1,537	1,917
Diluted weighted average shares outstanding	53,821	53,321	54,550	53,644
Anti-dilutive stock-based awards excluded	336	565	328	898
Net income per common share:	'	'	'	'
Basic	$0.14	$0.10	$0.28	$0.25
Diluted	$0.14	$0.10	$0.27	$0.24

Organization_and_Summary_of_Si6

Organization and Summary of Significant Accounting Policies - Summary of Changes in Estimated Product Warranty Liabilities (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Balance, beginning of period	$955	$484
Utilization of accrual	-646	-420
Warranty expense	517	644
Balance, end of period	$826	$708

Recovered_Sheet1

Cash, cash equivalents, and investments - Summary of Cash, Cash Equivalents and Held-to-Maturity Investments by Type (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	$74,009	$63,395	'	'
Gross Unrealized Gains	24	17	'	'
Gross Unrealized Losses	-20	-14	'	'
Fair Value	74,013	63,398	'	'
Cash and cash equivalents	38,615	42,271	35,006	36,127
Short-term investments	28,983	9,101	'	'
Long-term investments	6,411	12,023	'	'
Cash [Member]	'	'	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	36,392	37,196	'	'
Fair Value	36,392	37,196	'	'
Cash and cash equivalents	36,392	37,196	'	'
Level 1 [Member]	'	'	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	17,678	12,773	'	'
Gross Unrealized Gains	3	3	'	'
Gross Unrealized Losses	-20	-14	'	'
Fair Value	17,661	12,762	'	'
Cash and cash equivalents	2,223	5,030	'	'
Short-term investments	12,811	1,102	'	'
Long-term investments	2,644	6,641	'	'
Level 1 [Member] \| Money Market Funds [Member]	'	'	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	2,223	5,030	'	'
Fair Value	2,223	5,030	'	'
Cash and cash equivalents	2,223	5,030	'	'
Level 1 [Member] \| Corporate Bonds [Member]	'	'	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	15,455	7,743	'	'
Gross Unrealized Gains	3	3	'	'
Gross Unrealized Losses	-20	-14	'	'
Fair Value	15,438	7,732	'	'
Short-term investments	12,811	1,102	'	'
Long-term investments	2,644	6,641	'	'
Level 2 [Member]	'	'	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	19,939	13,426	'	'
Gross Unrealized Gains	21	14	'	'
Fair Value	19,960	13,440	'	'
Cash and cash equivalents	'	45	'	'
Short-term investments	16,172	7,999	'	'
Long-term investments	3,767	5,382	'	'
Level 2 [Member] \| State and Municipal Obligations [Member]	'	'	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	17,466	10,807	'	'
Gross Unrealized Gains	21	14	'	'
Fair Value	17,487	10,821	'	'
Cash and cash equivalents	'	45	'	'
Short-term investments	14,689	5,626	'	'
Long-term investments	2,777	5,136	'	'
Level 2 [Member] \| Certificates of Deposit [Member]	'	'	'	'
Restricted Cash and Cash Equivalents Items [Line Items]	'	'	'	'
Amortized Cost	2,473	2,619	'	'
Fair Value	2,473	2,619	'	'
Short-term investments	1,483	2,373	'	'
Long-term investments	$990	$246	'	'

Recovered_Sheet2

Cash, cash equivalents, and investments - Summary of Amortized Cost and Fair Value of Short-term and Long-term Investments (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Due in less than one year	$28,983	$9,101
Due after one year, through two years	6,411	12,023
Amortized Cost [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Due in less than one year	28,983	'
Due after one year, through two years	6,163	'
Due after two years	248	'
Total short-term and long-term investments	35,394	'
Fair Value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Due in less than one year	28,989	'
Due after one year, through two years	6,167	'
Due after two years	242	'
Total short-term and long-term investments	$35,398	'

Inventory_Inventories_Detail

Inventory - Inventories (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]	'	'
Raw materials	$10,697	$7,376
Work-in-process	134	44
Finished goods	6,043	4,688
Reserve for excess and obsolete inventory	-746	-999
Total inventory	$16,128	$11,109

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'	'	'
Goodwill	$2,206,000	'	$2,206,000	'	$2,235,000
Amortization expense	$71,000	$39,000	$153,000	$115,000	'

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Intangible Assets Other than Goodwill (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Intangible assets, Gross Carrying Amount	$3,933	$4,007
Amortized intangible assets, Gross Carrying Amount	2,418	2,091
Accumulated Amortization	-826	-690
Intangible assets, Net Carrying Amount	3,107	3,317
Amortized intangible assets, Net Carrying Amount	1,592	1,401
Not amortized intangible assets, Carrying Amount	1,515	1,916
Domain Names [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Amortized intangible assets, Gross Carrying Amount	125	125
Accumulated Amortization	-111	-102
Amortized intangible assets, Net Carrying Amount	14	23
Amortized intangible assets, Useful Life	'5 years	'
Issued Patents [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Amortized intangible assets, Gross Carrying Amount	1,735	1,529
Accumulated Amortization	-524	-441
Amortized intangible assets, Net Carrying Amount	1,211	1,088
Issued Patents [Member] \| Minimum [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Amortized intangible assets, Useful Life	'4 years	'
Issued Patents [Member] \| Maximum [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Amortized intangible assets, Useful Life	'15 years	'
Issued Trademarks [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Amortized intangible assets, Gross Carrying Amount	558	437
Accumulated Amortization	-191	-147
Amortized intangible assets, Net Carrying Amount	367	290
Issued Trademarks [Member] \| Minimum [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Amortized intangible assets, Useful Life	'9 years	'
Issued Trademarks [Member] \| Maximum [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Amortized intangible assets, Useful Life	'11 years	'
TASER Trademark [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Not amortized intangible assets, Carrying Amount	900	900
Patents and Trademarks Pending [Member]	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Not amortized intangible assets, Carrying Amount	$615	$1,016

Recovered_Sheet3

Goodwill and Intangible assets - Estimated Amortization Expense of Intangible Assets (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
2014 (remaining three months)	$46	'
2015	178	'
2016	171	'
2017	167	'
2018	157	'
2019	147	'
Thereafter	726	'
Amortized intangible assets, Net Carrying Amount	$1,592	$1,401

Deferred_Revenue_Summary_of_De

Deferred Revenue - Summary of Deferred Revenue (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	$29,999	$20,219
Total current portion of deferred revenue	10,033	6,878
Total long-term portion of deferred revenue	19,966	13,341
Warranty [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	20,275	15,889
Total current portion of deferred revenue	6,300	'
EVIDENCE.com [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	6,864	4,026
Total current portion of deferred revenue	3,300	'
TASER Assurance Program [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	2,771	138
Total current portion of deferred revenue	300	'
Other [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	$89	$166

Deferred_Revenue_Additional_In

Deferred Revenue - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Deferred Revenue Arrangement [Line Items]	'	'
Total current portion of deferred revenue	$10,033	$6,878
EVIDENCE.com [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total current portion of deferred revenue	3,300	'
Warranty [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total current portion of deferred revenue	6,300	'
TASER Assurance Program [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total current portion of deferred revenue	$300	'

Accrued_liabilities_Accrued_Li

Accrued liabilities - Accrued Liabilities (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Payables and Accruals [Abstract]	'	'	'	'
Accrued salaries and benefits	$3,070	$2,328	'	'
Accrued judgments and settlements	330	3,350	'	'
Accrued professional fees	368	286	'	'
Accrued warranty expense	826	955	708	484
Accrued income and other taxes	349	437	'	'
Other accrued expenses	1,910	1,484	'	'
Accrued liabilities	$6,853	$8,840	'	'

Accrued_liabilities_Additional

Accrued liabilities - Additional Information (Detail) (AA And Saba Consultants [Member], USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
AA And Saba Consultants [Member]	'	'
Accrued Liabilities And Other Liabilities [Line Items]	'	'
Settlement amount paid	$4.50	'
Settlement amount accrued	'	3.3
Reduction in accrued judgments and settlements	$0.30	'

Income_taxes_Additional_Inform

Income taxes - Additional Information (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Income Tax Disclosure [Line Items]	'
Total current and long term deferred tax assets	$16.80
Research and development tax credit studies	10.4
Liability for unrecognized tax benefits	3.3
Overall effective tax rate, after discrete period adjustments	36.90%
Effective tax rate, before discrete period adjustments	37.60%
Federal [Member]	'
Income Tax Disclosure [Line Items]	'
Liability for unrecognized tax benefits	3.2
State [Member]	'
Income Tax Disclosure [Line Items]	'
Liability for unrecognized tax benefits	0.1
Research and Development Credits [Member]	'
Income Tax Disclosure [Line Items]	'
Unrecognized tax benefit associated with research and development credits that has been netted against the research and development credit deferred tax asset	$1.90

Stockholders_equity_Additional

Stockholders' equity - Additional Information (Detail) (USD $)

0 Months Ended

1 Months Ended

5 Months Ended

9 Months Ended

5 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

31-May-14

31-May-13

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Share Repurchase Program Purchase Price [Member]

Restricted Stock [Member]

Performance Based Restricted Stock Unit [Member]

Restricted Stock Units (RSUs) [Member]

Performance Based Stock Options [Member]

Stock Options [Member]

Incentive Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock incentive plan

1,600,000

Option available for future grants

1,900,000

Aggregate intrinsic value price per share

$15.44

Unrecognized stock-based compensation cost

$11,400,000

$32,000

Weighted average period

'30 years

Approximate units of performance restricted stock granted

100,000

Approximate units outstanding

1,268,000

1,279,000

300,000

Performance criteria met for approximate units

369,000

100,000

Maximum additional shares

100,000

Shares withheld, for net share settlement of share based award

100,000

Tax payments, for net share settlement of share based award

1,262,000

221,000

1,300,000

Aggregate intrinsic value, options exercised

1,700,000

5,300,000

14,400,000

9,100,000

Weighted average vesting period

'9 months

Performance-based stock options Cumulative Granted

400,000

Performance options, vested

300,000

Number of options awarded

Incremental stock option expense

2,000

22,000

18,000

100,000

Stock repurchase authorized amount

30,000,000

Purchased common shares under stock repurchase program

1,700,000

200,000

Purchased common shares under stock repurchase program, total cost

22,400,000

2,900,000

Purchased common shares under stock repurchase program, average cost per share

$12.99

$11.94

$12.96

$11.91

Remaining stock repurchase authorized amount

$7,600,000

Stockholders_equity_Summary_of

Stockholders' equity - Summary of Restricted Stock Unit Activity (Detail) (Restricted Stock [Member], USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014
Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of Units outstanding, beginning of period	1,279
Number of Units, Granted	502
Number of Units, Released	-369
Number of Units, Forfeited	-144
Number of Units outstanding, end of period	1,268
Weighted Average Grant Date Fair Value, Units outstanding, beginning of period	$9.67
Weighted Average Grant Date Fair Value, Granted	$16.73
Weighted Average Grant Date Fair Value, Released	$7.51
Weighted Average Grant Date Fair Value, Forfeited	$12.83
Weighted Average Grant Date Fair Value, Units outstanding, end of period	$12.75
Aggregate intrinsic value, Units outstanding, beginning of period	'
Aggregate intrinsic value, Granted	'
Aggregate intrinsic value, Released	'
Aggregate intrinsic value, Forfeited	'
Aggregate intrinsic value, Units outstanding, end of period	$19,575

Stockholders_equity_Summary_of1

Stockholders' equity - Summary of the Company's Stock Options Activity (Detail) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of options, Granted	0	0
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of options, Options outstanding, beginning of period	3,366	'
Number of options, Granted	'	'
Number of options, Exercised	-1,218	'
Number of options, Expired / forfeited	-54	'
Number of options, Options outstanding, end of period	2,094	'
Number of options, Options exercisable, end of period	2,055	'
Number of options, Options expected to vest, end of period	27	'
Weighted average exercise price, Options outstanding, beginning of period	6.15	'
Weighted average exercise price, Granted	'	'
Weighted average exercise price, Exercised	7.06	'
Weighted average exercise price, Expired / forfeited	10.29	'
Weighted average exercise price, Options outstanding, end of period	5.51	'
Weighted average exercise price, Options exercisable, end of period	5.53	'
Weighted average exercise price, Options expected to vest, end of period	4.73	'
Weighted Average Remaining Contractual Life (years), Options outstanding, end of period	'4 years 8 months 12 days	'
Weighted Average Remaining Contractual Life (years), Options exercisable, end of period	'4 years 8 months 12 days	'
Weighted Average Remaining Contractual Life (years), Options expected to vest, end of period	'4 years 10 months 21 days	'
Aggregate intrinsic value, Options outstanding, beginning of period	'	'
Aggregate intrinsic value, Granted	'	'
Aggregate intrinsic value, Exercised	'	'
Aggregate intrinsic value, Expired / forfeited	'	'
Aggregate intrinsic value, Options outstanding, end of period	20,925	'
Aggregate intrinsic value, Options exercisable, end of period	20,508	'
Aggregate intrinsic value, Options expected to vest, end of period	287	'

Stockholders_equity_Reported_S

Stockholders' equity - Reported Share-Based Compensation (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total share-based compensation	$1,437	$963	$4,121	$2,906
Cost of Products Sold [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total share-based compensation	61	50	149	134
Sales, General and Administrative Expenses [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total share-based compensation	940	736	2,598	2,293
Research and Development Expenses [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total share-based compensation	$436	$177	$1,374	$479

Line_of_credit_Additional_Info

Line of credit - Additional Information (Detail) (USD $)	9 Months Ended
Line of credit - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]	'	'
Total availability under line of credit agreement	$10,000,000	'
Letters of credit outstanding amount	47,000	'
Varying Interest on Line of credit agreement	'LIBOR plus 1.5% to Prime	'
Line of credit interest rate	1.50%	'
Maturity date of line of credit	30-Jun-15	'
Line of credit facility amount outstanding	$0	$0
Maximum ratio of total liabilities to tangible net worth	11	'
Minimum required fixed coverage charge ratio	1.25	'
Period used for calculating ratios	'12 months	'
Company's tangible net worth ratio	0.4	'
Fixed coverage charge ratio	2.86	'

Recovered_Sheet4

Commitments and contingencies - Additional Information (Detail) (USD $)	3 Months Ended			0 Months Ended	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2011	Jun. 30, 2014	6-May-14	Dec. 31, 2013	Dec. 31, 2012	Feb. 28, 2014
	Cases	Cases	Lawsuits	AA And Saba Consultants [Member]	AA And Saba Consultants [Member]	AA And Saba Consultants [Member]	AA And Saba Consultants [Member]
	Lawsuits
Loss Contingencies [Line Items]	'	'	'	'	'	'	'
Number of lawsuits against Company	'	'	16	'	'	'	'
Number of active product liability cases	16	55	'	'	'	'	'
Amount of settlement offer	'	'	'	'	'	$0.80	'
Verdict against the company	'	'	'	'	'	'	3.3
Loss contingency loss in period	'	'	'	'	2.6	'	'
Amount of attorneys' fees, costs and expenses awarded to plaintiff	'	'	'	$1.20	'	'	'

Commitments_and_contingencies_1

Commitments and contingencies - Loss Contingencies (Detail)	9 Months Ended
Commitments and contingencies - Loss Contingencies (Detail)	Sep. 30, 2014
Grable [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Grable
Month Served	'Aug-08
Jurisdiction	'6th Judicial Circuit Court, Pinellas County, FL
Claim Type	'Training Injury
Status	'Discovery Phase
Koon [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Koon
Month Served	'Dec-08
Jurisdiction	'17th Judicial Circuit Court, Broward County, FL
Claim Type	'Training Injury
Status	'Discovery Phase
Derbyshire [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Derbyshire
Month Served	'Nov-09
Jurisdiction	'Ontario, Canada Superior Court of Justice
Claim Type	'Officer Injury
Status	'Discovery Phase
Thompson [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Thompson
Month Served	'Mar-10
Jurisdiction	'11th Judicial Circuit Court, Miami-Dade County, FL
Claim Type	'Suspect Injury During Arrest
Status	'Discovery Phase
Doan [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Doan
Month Served	'Apr-10
Jurisdiction	'The Queens Bench Alberta, Red Deer Judicial Dist.
Claim Type	'Wrongful Death
Status	'Discovery Phase
Shymko [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Shymko
Month Served	'Dec-10
Jurisdiction	'The Queens Bench, Winnipeg Centre, Manitoba
Claim Type	'Wrongful Death
Status	'Pleading Phase
Juran [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Juran
Month Served	'Dec-10
Jurisdiction	'Hennepin County District Court, 4th Judicial District
Claim Type	'Officer Injury
Status	'Pleading Phase
Wilson [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Wilson
Month Served	'May-11
Jurisdiction	'US District Court, ED MO
Claim Type	'Wrongful Death
Status	'Trial scheduled for Nov. 2014
Ramsey [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Ramsey
Month Served	'Jan-12
Jurisdiction	'17th Judicial Circuit Court, Broward County, FL
Claim Type	'Wrongful Death
Status	'Discovery Phase
Firman [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Firman
Month Served	'Apr-12
Jurisdiction	'Ontario, Canada Superior Court of Justice
Claim Type	'Wrongful Death
Status	'Pleading Phase
Ricks [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Ricks
Month Served	'May-12
Jurisdiction	'US District Court, WD LA
Claim Type	'Wrongful Death
Status	'Motion Phase
Miller [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Miller
Month Served	'Jan-13
Jurisdiction	'New Castle County Superior Court, DE
Claim Type	'Wrongful Death
Status	'Discovery Phase
Rascom [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Rascom
Month Served	'Apr-14
Jurisdiction	'US District Court, AZ
Claim Type	'Wrongful Death
Status	'Pleading Phase
Schrock [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Schrock
Month Served	'Sep-14
Jurisdiction	'San Bernardino County Superior Court, CA
Claim Type	'Wrongful Death
Status	'Pleading Phase
Ward [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Ward
Month Served	'Oct-14
Jurisdiction	'Richmond County Superior Court, GA
Claim Type	'Officer Fired
Status	'Pleading Phase
Moore [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Moore
Month Served	'Oct-14
Jurisdiction	'St. Louis County Circuit Court, MO
Claim Type	'Wrongful Death
Status	'Pleading Phase

Commitments_and_contingencies_2

Commitments and contingencies - Summary of Other Litigation Matters (Detail) (Pending Litigation [Member])	9 Months Ended
	Sep. 30, 2014
Glowczenski [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Glowczenski
Month Served	'Oct-04
Jurisdiction	'US District Court, ED NY
Claim Type	'Wrongful Death
Status	'Notice of Appeal filed Sep. 2013; Opening Brief was filed Jan. 2014; Answering Brief filed Apr. 2014.
Mitchell [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Mitchell
Month Served	'Apr-12
Jurisdiction	'US District Court, ED MI
Claim Type	'Wrongful Death
Status	'Notice of Appeal filed Aug. 2014

Commitments_and_contingencies_3

Commitments and contingencies - Summary of Cases Dismissed or Judgment Entered (Detail)	9 Months Ended
	Sep. 30, 2014
Faltesek [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Faltesek
Month Served	'Apr-14
Jurisdiction	'Harris County District Court, TX
Claim Type	'Wrongful Death
Status	'Voluntary Dismissal
Mitchell [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Mitchell
Month Served	'Apr-12
Jurisdiction	'US District Court, ED MI
Claim Type	'Wrongful Death
Status	'Motion for Summary Judgment Granted
McCue [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'McCue
Month Served	'Mar-14
Jurisdiction	'US District Court, District of Maine
Claim Type	'Wrongful Death
Status	'Voluntary Dismissal
Slade [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Slade
Month Served	'Dec-13
Jurisdiction	'US District Court, ED TX
Claim Type	'Wrongful Death
Status	'Voluntary Dismissal
Goodard [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Goodard
Month Served	'Jul-14
Jurisdiction	'Pinellas County Circuit Court, FL
Claim Type	'Wrongful Death
Status	'Voluntary Dismissal
Parker [Member]	'
Loss Contingencies [Line Items]	'
Plaintiff	'Parker
Month Served	'Jul-14
Jurisdiction	'US District Court, SD TX
Claim Type	'Suspect Injury During Arrest
Status	'Voluntary Dismissal

Commitments_and_contingencies_4

Commitments and contingencies - Information Regarding the Company's Insurance Coverage (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
2004 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2004
Policy Start Date	1-Dec-03
Policy End Date	1-Dec-04
Insurance Coverage	$2
Deductible Amount	0.1
Defense Costs Covered	'N
Remaining Insurance Coverage	2
Active Cases and Cases on Appeal	'Glowczenski
2005 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2005
Policy Start Date	1-Dec-04
Policy End Date	1-Dec-05
Insurance Coverage	10
Deductible Amount	0.3
Defense Costs Covered	'Y
Remaining Insurance Coverage	7
Active Cases and Cases on Appeal	'n/a
2006 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2006
Policy Start Date	1-Dec-05
Policy End Date	1-Dec-06
Insurance Coverage	10
Deductible Amount	0.3
Defense Costs Covered	'Y
Remaining Insurance Coverage	3.7
Active Cases and Cases on Appeal	'n/a
2007 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2007
Policy Start Date	1-Dec-06
Policy End Date	1-Dec-07
Insurance Coverage	10
Deductible Amount	0.3
Defense Costs Covered	'Y
Remaining Insurance Coverage	8
Active Cases and Cases on Appeal	'n/a
2008 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2008
Policy Start Date	1-Dec-07
Policy End Date	15-Dec-08
Insurance Coverage	10
Deductible Amount	0.5
Defense Costs Covered	'Y
Remaining Insurance Coverage	'
Active Cases and Cases on Appeal	'Grable, Koon
2009 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2009
Policy Start Date	1-Dec-08
Policy End Date	15-Dec-09
Insurance Coverage	10
Deductible Amount	1
Defense Costs Covered	'N
Remaining Insurance Coverage	10
Active Cases and Cases on Appeal	'Derbyshire
2010 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2010
Policy Start Date	15-Dec-09
Policy End Date	15-Dec-10
Insurance Coverage	10
Deductible Amount	1
Defense Costs Covered	'N
Remaining Insurance Coverage	10
Active Cases and Cases on Appeal	'Thompson, Shymko, Doan, Juran
2011 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2011
Policy Start Date	15-Dec-10
Policy End Date	15-Dec-11
Insurance Coverage	10
Deductible Amount	1
Defense Costs Covered	'N
Remaining Insurance Coverage	10
Active Cases and Cases on Appeal	'Wilson
Jan - Jun 2012 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Start Date	15-Dec-11
Policy End Date	25-Jun-12
Insurance Coverage	7
Deductible Amount	1
Defense Costs Covered	'N
Remaining Insurance Coverage	7
Active Cases and Cases on Appeal	'Ramsey, Firman, Ricks, Mitchell
Jul - Dec 2012 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Start Date	25-Jun-12
Policy End Date	15-Dec-12
Insurance Coverage	12
Deductible Amount	1
Defense Costs Covered	'N
Remaining Insurance Coverage	12
Active Cases and Cases on Appeal	'n/a
2013 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2013
Policy Start Date	15-Dec-12
Policy End Date	15-Dec-13
Insurance Coverage	12
Deductible Amount	1
Defense Costs Covered	'N
Remaining Insurance Coverage	12
Active Cases and Cases on Appeal	'Miller
2014 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Year	'2014
Policy Start Date	15-Dec-13
Policy End Date	15-Dec-14
Insurance Coverage	12
Deductible Amount	4
Defense Costs Covered	'N
Remaining Insurance Coverage	$12
Active Cases and Cases on Appeal	'Rascom, Schrock, Moore, Ward
Minimum [Member] \| Jan - Jun 2012 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Month Year	'2012-01
Minimum [Member] \| Jul - Dec 2012 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Month Year	'2012-07
Maximum [Member] \| Jan - Jun 2012 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Month Year	'2012-06
Maximum [Member] \| Jul - Dec 2012 [Member]	'
Product Liability Contingency [Line Items]	'
Policy Month Year	'2012-12

Related_party_transactions_Add

Related party transactions - Additional Information (Detail) (Consulting Services [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Consulting Services [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Transaction expenses incurred by parent company	$50,000	$59,000	$121,000	$125,000	'
Outstanding payables due to related party	$26,000	'	$26,000	'	$12,000

Employee_benefit_plans_Additio

Employee benefit plans - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee Benefit Plans [Line Items]	'	'	'	'
Employee deferrals deemed vested percentage upon contribution	'	'	100.00%	'
Company's contributions to the plan	$200,000	$200,000	$600,000	$500,000
Company's matching contributions to the plan	$6,000	$6,000	$20,000	$6,000
Maximum [Member]	'	'	'	'
Employee Benefit Plans [Line Items]	'	'	'	'
Non-qualified deferred compensation plan allowable eligible participants deferral percentage of base salary	'	'	80.00%	'
Non-qualified deferred compensation plan allowable eligible participants deferral percentage of other compensation	'	'	100.00%	'

Segment_data_Additional_Inform

Segment data - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2014
	Segment
Segment Reporting [Abstract]	'
Number of reportable segments of company	2

Segment_data_Summary_of_Operat

Segment data - Summary of Operational Information Relative to the Company's Reportable Segments (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]	'	'	'	'
Product sales	$43,191	$34,730	$114,972	$96,755
Service revenue	1,158	467	2,737	1,051
Net sales	44,349	35,197	117,709	97,806
Cost of products sold	15,138	12,804	42,135	35,975
Cost of services delivered	498	297	1,439	1,542
Gross margin	28,713	22,096	74,135	60,289
Sales, general and administrative expenses	12,441	12,776	39,734	34,898
Research and development expenses	3,759	2,439	10,820	6,444
Income (loss) from operations	12,513	6,881	23,581	18,947
Purchases of property and equipment	844	335	2,066	1,174
Purchases of intangible assets	16	69	125	271
Depreciation and amortization	1,101	1,088	3,368	4,036
TASER Weapons [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Product sales	40,010	31,627	105,160	89,902
Net sales	40,010	31,627	105,160	89,902
Cost of products sold	12,443	10,908	34,024	31,535
Gross margin	27,567	20,719	71,136	58,367
Sales, general and administrative expenses	10,028	11,131	32,218	30,622
Research and development expenses	1,050	1,160	2,660	3,126
Income (loss) from operations	16,489	8,428	36,258	24,619
Purchases of property and equipment	803	230	1,836	828
Purchases of intangible assets	14	67	123	260
Depreciation and amortization	1,010	1,025	3,078	2,998
Evidence.com & Video [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Product sales	3,181	3,103	9,812	6,853
Service revenue	1,158	467	2,737	1,051
Net sales	4,339	3,570	12,549	7,904
Cost of products sold	2,695	1,896	8,111	4,440
Cost of services delivered	498	297	1,439	1,542
Gross margin	1,146	1,377	2,999	1,922
Sales, general and administrative expenses	2,413	1,645	7,516	4,276
Research and development expenses	2,709	1,279	8,160	3,318
Income (loss) from operations	-3,976	-1,547	-12,677	-5,672
Purchases of property and equipment	41	105	230	346
Purchases of intangible assets	2	2	2	11
Depreciation and amortization	$91	$63	$290	$1,038