Control4 (CTRL) Inactive 10-K20 Feb 152014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Feb. 10, 2015	Jun. 30, 2014
Document and Entity Information
Entity Registrant Name	Control4 Corp
Entity Central Index Key	1259515
Document Type	10-K
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$307.10
Entity Common Stock, Shares Outstanding		24,308,287
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$29,187	$84,546
Restricted cash	311
Short-term investments	53,523
Accounts receivable, net	20,155	15,064
Inventories	14,212	15,312
Prepaid expenses and other current assets	2,075	1,773
Total current assets	119,463	116,695
Property and equipment, net	5,089	3,943
Long-term investments	14,509
Intangible assets, net	1,409	928
Goodwill	231
Other assets	1,329	1,120
Total assets	142,030	122,686
Current liabilities:
Accounts payable	15,016	13,314
Accrued liabilities	4,750	6,821
Deferred revenue	843	644
Current portion of notes payable	915	1,138
Total current liabilities	21,524	21,917
Notes payable	913	1,828
Other long-term liabilities	1,291	467
Total liabilities	23,728	24,212
Commitments and contingencies
Stockholders' equity:
Common stock, $0.0001 par value; 500,000,000 shares authorized; 22,785,104 and 24,305,381 shares issued and outstanding at December 31, 2013 and December 31, 2014, respectively	2	2
Additional paid-in capital	212,388	200,545
Accumulated deficit	-93,928	-102,084
Accumulated other comprehensive income (loss)	-160	11
Total stockholders' equity	118,302	98,474
Total liabilities and stockholders' equity	$142,030	$122,686

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	24,305,381	22,785,104
Common stock, shares outstanding	24,305,381	22,785,104

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$148,800	$128,511	$109,512
Cost of revenue	72,443	64,234	57,225
Cost of revenue - inventory purchase commitment		-380	1,840
Gross margin	76,357	64,657	50,447
Operating expenses:
Research and development	27,365	24,979	20,310
Sales and marketing	25,887	21,975	20,182
General and administrative	14,195	12,329	10,150
Litigation settlement	47	440	2,869
Total operating expenses	67,494	59,723	53,511
Income (loss) from operations	8,863	4,934	-3,064
Other income (expense):
Interest income	239	16	13
Interest expense	-177	-470	-277
Other income (expense)	-358	-729	-254
Total other income (expense)	-296	-1,183	-518
Income (loss) before income taxes	8,567	3,751	-3,582
Income tax expense	411	248	141
Net income (loss)	$8,156	$3,503	($3,723)
Net income (loss) per common share:
Basic (in dollars per share)	$0.34	$0.33	($1.58)
Diluted (in dollars per share)	$0.32	$0.16	($1.58)
Weighted-average number of shares:
Basic (in shares)	23,685	10,609	2,360
Diluted (in shares)	25,646	22,263	2,360

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$8,156	$3,503	($3,723)
Other comprehensive income (loss):
Foreign currency translation adjustment	-124	15	-28
Net unrealized losses on available-for-sale investments	-47
Total other comprehensive income (loss)	-171	15	-28
Comprehensive income (loss)	$7,985	$3,518	($3,751)

CONSOLIDATED_STATEMENTS_OF_RED

CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (USD $)	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Total
In Thousands, except Share data, unless otherwise specified	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive (Loss) Income	Total
Balance at Dec. 31, 2011		$9,334	($101,864)	$24	($92,506)
Balance (in shares) at Dec. 31, 2011	2,245,521
Increase (Decrease) in Stockholders' Equity
Net income (loss)			-3,723		-3,723
Other comprehensive income (loss)				-28	-28
Stock-based compensation		2,869			2,869
Issuance of common stock upon exercise of stock options		785			785
Issuance of common stock upon exercise of stock options (in shares)	245,349
Balance at Dec. 31, 2012		12,988	-105,587	-4	-92,603
Balance (in shares) at Dec. 31, 2012	2,490,870
Increase (Decrease) in Stockholders' Equity
Net income (loss)			3,503		3,503
Other comprehensive income (loss)				15	15
Stock-based compensation		3,760			3,760
Issuance of common stock options in connection with a business acquisition		174			174
Conversion of redeemable convertible preferred stock into common stock	2	116,311			116,313
Conversion of redeemable convertible preferred stock into common stock (in shares)	15,293,960
Issuance of common stock, net of issuance costs		65,556			65,556
Issuance of common stock, net of issuance costs (in shares)	4,600,000
Issuance of common stock upon net exercise of common stock warrants (in shares)	293,232
Reclassification of redeemable convertible preferred stock warrant liability upon conversion to preferred stock		1,310			1,310
Issuance of common stock upon exercise of stock options		446			446
Issuance of common stock upon exercise of stock options (in shares)	107,042
Balance at Dec. 31, 2013	2	200,545	-102,084	11	98,474
Balance (in shares) at Dec. 31, 2013	22,785,104
Increase (Decrease) in Stockholders' Equity
Net income (loss)			8,156		8,156
Other comprehensive income (loss)				-171	-171
Excess tax benefit from exercise of options for common stock		91			91
Stock-based compensation		5,341			5,341
Issuance of common stock upon net exercise of common stock warrants (in shares)	7,763
Issuance of common stock upon exercise of stock options		6,411			6,411
Issuance of common stock upon exercise of stock options (in shares)	1,512,514
Balance at Dec. 31, 2014	$2	$212,388	($93,928)	($160)	$118,302
Balance (in shares) at Dec. 31, 2014	24,305,381

CONSOLIDATED_STATEMENTS_OF_RED1

CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (Temporary Equity) (USD $)	Redeemable Convertible Preferred Stock	Total
In Thousands, except Share data, unless otherwise specified	Redeemable Convertible Preferred Stock	Total
Balance at Dec. 31, 2012	$116,313
Balance (in shares) at Dec. 31, 2012	15,293,960
Increase (Decrease) in Stockholders' Equity
Conversion of redeemable convertible preferred stock into common stock	($116,313)	$116,313
Conversion of redeemable convertible preferred stock into common stock (in shares)	-15,293,960
Balance at Dec. 31, 2013

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities
Net income (loss)	$8,156	$3,503	($3,723)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation expense	2,547	2,201	1,714
Amortization of intangible assets	491	319	271
Provision for doubtful accounts	229	159	184
Loss (gain) on inventory purchase commitment		-380	1,840
Loss on disposal of property and equipment			107
Stock-based compensation	5,341	3,760	2,869
Excess tax benefit from exercise of options for common stock	-91
Warrant liability expense		709	254
Changes in assets and liabilities:
Accounts receivable	-5,331	-2,104	-2,600
Inventories	1,025	-2,723	-4,858
Restricted cash	-330
Prepaid expenses and other current assets	-323	111	-352
Other assets	-209	-233	-823
Accounts payable	1,698	-1,221	4,622
Accrued liabilities	-2,110	620	2,117
Deferred revenue	199	102	-10
Other long-term liabilities	-44	-1,155	-621
Net cash provided by operating activities	11,248	3,668	991
Investing activities
Purchases of available-for-sale investments	-89,844
Proceeds from sales of available-for-sale investments	2,850
Proceeds from maturities of available-for-sale investments	18,915
Purchases of property and equipment	-2,710	-3,470	-2,360
Business acquisitions, net of cash acquired	-1,116	-147
Net cash used in investing activities	-71,905	-3,617	-2,360
Financing activities
Proceeds from issuance of common stock, net of issuance costs		65,556
Proceeds from exercise of options for common stock	6,411	446	785
Excess tax benefit from exercise of options for common stock	91
Proceeds from notes payable		1,145	1,876
Repayment of notes payable	-1,138	-1,338	-1,037
Net cash provided by financing activities	5,364	65,809	1,624
Effect of exchange rate changes on cash and cash equivalents	-66	-9	-28
Net increase (decrease) in cash and cash equivalents	-55,359	65,851	227
Cash and cash equivalents at beginning of period	84,546	18,695	18,468
Cash and cash equivalents at end of period	29,187	84,546	18,695
Supplemental disclosure of cash flow information
Cash paid for interest	188	461	278
Cash paid for taxes	246	153	26
Supplemental schedule of non-cash investing and financing activities
Options for common stock granted in connection with a business acquisition		174
Elimination of liability upon net exercise of warrants to purchase preferred stock		1,310
Conversion of redeemable convertible preferred stock to common stock		116,313
Landlord paid tenant improvements	739
Purchases of property and equipment financed by accounts payable	257
Net unrealized losses on available-for-sale investments	($47)

Description_of_Business_and_Su

Description of Business and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Description of Business and Summary of Significant Accounting Policies
Description of Business and Summary of Significant Accounting Policies
	1. Description of Business and Summary of Significant Accounting Policies

	Control4 Corporation (“Control4” or the “Company”) is a leading provider of automation and control solutions for the connected home. The Company unlocks the potential of connected devices, making entertainment systems easier to use, homes more comfortable, appliances more energy efficient, and families more secure. The Company was incorporated in the state of Delaware on March 27, 2003.

	Reclassifications

	Certain prior-year amounts have been reclassified in order to conform to the current-year presentation. A reclassification was made from general and administrative expenses to other income (expense) related to foreign currency transaction gains (losses). As a result, income from operations is impacted by $0 and $34,000 for the years ended December 31, 2012 and 2013, respectively, but this reclassification did not impact previously reported net income, or related per share amounts. In addition, a reclassification was made related to international hospitality revenue previously disclosed as United States hospitality revenue. The reclassification did not materially impact previous disclosures related to geographic information. Furthermore, this reclassification had no effect on previously reported amounts related to total revenue, income from continuing operations, net income or related per share amounts, and does not impact previous disclosures regarding concentrations of revenue.

	Basis of Presentation

	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in the consolidated financial statements.

	Segment Reporting

	Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker, the Chief Executive Officer, in making decisions regarding resource allocation and accessing performance. To date, the Company has viewed its operations and manages its business as one operating segment.

	Concentrations of Risk

	The Company’s accounts receivable are derived from revenue earned from its worldwide network of independent dealers and distributors. The Company’s sales to dealers and distributors located outside the United States are generally denominated in United States dollars, except for sales to dealers and distributors located in the United Kingdom and the European Union, which are generally denominated in pounds sterling and the euro, respectively. There were no individual account balances greater than 10% of total accounts receivable at December 31, 2013 and December 31, 2014.

	No dealer or distributor accounted for more than 10% of total revenue for the years ended December 31, 2012, 2013 and 2014.

	The Company relies on a limited number of suppliers for its contract manufacturing. A significant disruption in the operations of these manufacturers would impact the production of the Company’s products for a substantial period of time, which could have a material adverse effect on the Company’s business, financial condition and results of operations.

	Geographic Information

	The Company’s revenue includes amounts earned through sales to dealers and distributors located outside of the United States. With the exception of Canada, no single foreign country accounted for more than 10% of total revenue for the years ended December 31, 2012, 2013 and 2014. The following table sets forth revenue from the U.S., Canadian and all other international dealers and distributors combined (in thousands):

			Years Ended December 31,
			2012			2013			2014
	Revenue-United States		$	69,957		$	84,474		$	98,276
	Revenue-Canada		12,453			15,014			15,320
	Revenue-all other international sources		27,102			29,023			35,204
	Total revenue		$	109,512		$	128,511		$	148,800
	International revenue (excluding Canada) as a percent of total revenue		25		%	23		%	24		%

	Use of Accounting Estimates

	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates including those related to revenue recognition, sales returns, provisions for doubtful accounts, product warranty, inventory obsolescence, litigation, determination of fair value of stock options, deferred tax asset valuation allowances and income taxes. Actual results may differ from those estimates.

	Product Warranty

	The Company provides its customers a limited product warranty of two years, which requires the Company, at its option, to repair or replace defective products during the warranty period at no cost to the customer or refund the purchase price. The Company estimates the costs that may be incurred to replace, repair or issue a refund for defective products and records a reserve at the time revenue is recognized. Factors that affect the Company’s warranty liability include the number of installed systems, the Company’s historical experience and management’s judgment regarding anticipated rates of product warranty returns, net of refurbished products. The Company assesses the adequacy of its recorded warranty liability each period and makes adjustments to the liability as necessary. Warranty costs accrued includes amounts accrued for products at the time of shipment, adjustments for changes in estimated costs for warranties on products shipped in the period, and changes in estimated costs for warranties on products shipped in prior periods. It is not practicable for the Company to determine the amounts applicable to each of these components.

	The following table presents the changes in the product warranty liability (in thousands):

			Years Ended December 31,
			2012			2013			2014
	Balance at the beginning of the period		$	1,030		$	1,155		$	1,213
	Warranty costs accrued		1,050			1,025			1,145
	Warranty claims		(925		)	(967		)	(1,167		)
	Balance at the end of the period		$	1,155		$	1,213		$	1,191

	Net Income (Loss) Per Share

	Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed using the weighted-average number of common shares outstanding and potentially dilutive common shares outstanding during the period that have a dilutive effect on net income per share. Potentially dilutive common shares result from the assumed exercise of outstanding stock options and the assumed conversion of outstanding convertible preferred stock and warrants using the if-converted method. In a net loss position, diluted net loss per share is computed using only the weighted-average number of common shares outstanding during the period, as any additional common shares would be anti-dilutive.

	The following table presents the reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per share (in thousands):

			Years Ended December 31,
			2012			2013			2014
	Numerator:
	Net income (loss)		$	(3,723	)	$	3,503		$	8,156
Denominator:
Weighted average common stock outstanding for basic net income (loss) per common share		2,360			10,609			23,685
Effect of dilutive securities—stock options, convertible preferred stock, and warrants to purchase common stock and preferred stock		—			11,654			1,961
Weighted average common shares and dilutive securities outstanding		2,360			22,263			25,646

The following weighted-average common stock equivalents were anti-dilutive and therefore were excluded from the calculation of diluted net income (loss) per share (in thousands):

		Years Ended December 31,
		2012		2013		2014
Convertible preferred stock		15,294		—		—
Options to purchase common stock		4,317		356		1,041
Warrants to purchase common stock		541		1		—
Warrants to purchase preferred stock		194		—		—
Total		20,346		357		1,041

Revenue Recognition

The Company sells its products through a network of independent dealers, regional and national retailers and distributors. These dealers, retailers and distributors generally sell the Company’s products to the end consumer as part of a bundled sale, which typically includes other third-party products and related services, project design and installation services and on-going support.

The Company records estimated reductions to revenue for dealer, retailer and distributor incentives, primarily comprised of volume rebates, at the time of the initial sale. The estimated reductions to revenue for rebates are based on the sales terms and the Company’s historical experience and trend analysis. The most common incentive relates to amounts paid or credited to dealers and distributors for achieving defined volume levels or growth objectives.

The Company’s products include embedded software that is essential to the functionality of the hardware. Accordingly, the hardware and embedded software are accounted for as a single deliverable. In 2013, the Company began bundling Control4 App software licenses with its new controllers. These software licenses do not include acceptance provisions, rights to updates (e.g., when-and-if-available enhancements or upgrades to the functionality of the software) or post-contract customer support such as technical support. When a software license and controller are sold together, a multiple element arrangement exists and revenue is allocated to each deliverable based on relative selling prices. Typically, delivery of both the product and the software license occurs at the same time. The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable, and collection is reasonably assured. Product or licensed software is considered delivered once it has been shipped and title and risk of loss have been transferred. For most of the Company’s product sales, these criteria are met at the time the product is shipped.

Software license revenue represents fees earned from activating applications which allow end consumers to manage and control their automation systems using tablets, smartphones and other third-party devices. Software products such as Composer Home and Media Editions are sold on a limited basis and do not constitute a significant portion of revenue. The Company’s perpetual software licenses do not include acceptance provisions, rights to updates or upgrades or post-contract customer support such as technical support; the Company generally recognizes revenue at the time the software license is provided.

The Company offers a subscription service that allows consumers to control and monitor their homes remotely and allows the Company’s dealers to perform remote diagnostic services. Subscription revenue is deferred at the time of payment and recognized on a straight-line basis over the period the service is provided. Total revenue for subscription services represents less than 10% of total revenue for all periods presented.

The Company recognizes revenue net of cost of revenue for third-party products sold through the Company’s online ordering system. While the Company assumes credit risk on sales to its dealers and distributors for third-party products, the Company does not determine the product selling price, does not retain associated inventory risks and is not the primary obligor to the end consumer.

The Company’s agreements with dealers and distributors generally do not include rights of return or acceptance provisions. Even though contractual agreements do not provide return privileges, there are circumstances in which the Company will accept returns. In addition, agreements with certain retail distributors contain price protection and limited rights of return. The Company maintains a reserve for such returns based on the Company’s historical return experience.

Shipping charges billed to dealers and distributors are included in revenue and related shipping costs are included in cost of revenue.

Cost of Revenue

Cost of revenue includes the following: the cost of inventory sold during the period, inventory write-down costs, payroll, purchasing costs, royalty obligations, shipping expenses to dealers and distributors and warehousing costs, which include inbound freight costs from manufacturers, rent and payroll and benefit costs.

Cash and Cash Equivalents

The Company considers all highly liquid short-term investments with original maturities of three months or less at the time of purchase to be cash equivalents. Cash equivalents consist primarily of money market funds.

Restricted Cash

Restricted cash as of December 31, 2014, is composed of a guarantee made by our subsidiary in the United Kingdom to HM Revenue & Customs related to a customs duty deferment account.

Allowance for Doubtful Accounts

The Company extends credit to the majority of its dealers and distributors, which consist primarily of small, local businesses. Issuance of credit is based on ongoing credit evaluations by the Company of dealers’ and distributors’ financial condition and generally requires no collateral. Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains an allowance for doubtful accounts to reserve for potential uncollectible receivables. The allowance is based upon the creditworthiness of the Company’s dealers and distributors, the dealers’ and distributors’ historical payment experience, the age of the receivables and current market and economic conditions. Provisions for potentially uncollectible accounts are recorded in sales and marketing expenses. The Company writes off accounts receivable balances to the allowance for doubtful accounts when it becomes likely that they will not be collected.

The following table presents the changes in the allowance for doubtful accounts (in thousands):

		Years Ended December 31,
		2012			2013			2014
Balance at beginning of period		$	651		$	643		$	605
Provision		184			159			229
Deductions		(192		)	(197		)	(129		)
Balance at end of period		$	643		$	605		$	705

Inventories

Inventories consist of hardware and related component parts and are stated at the lower of cost or market using the first-in, first-out method. The Company periodically assesses the recoverability of its inventory and reduces the carrying value of the inventory when items are determined to be obsolete, defective or in excess of forecasted sales requirements. Inventory write-downs for excess, defective and obsolete inventory are recorded as a cost of revenue and totaled $1.5 million, $2.3 million, and $1.7 million for the years ended December 31, 2012, 2013 and 2014, respectively.

In December 2012, the Company finalized termination of a sales contract and, as a result of the contract termination, recorded a $1.8 million expense associated with an anticipated loss on firm purchase commitments for components that would have been required to meet the Company’s obligations under the terminated contract. The $1.8 million charge has been recorded as Cost of Revenue—Inventory Purchase Commitment in the accompanying consolidated statement of operations during the year ended December 31, 2012.

In 2013, the Company recorded a gain related to inventory purchase commitments of approximately $0.4 million, as the proceeds from liquidating the underlying inventory and the Company’s ability to consume common components exceeded original estimates.

Property and Equipment

Property and equipment are recorded at historical cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the following estimated useful lives:

Furniture and fixtures		2 - 5 years
Manufacturing tooling and test equipment		2 - 3 years
Lab and warehouse equipment		2 - 4 years
Computer equipment and software		3 - 4 years
Marketing equipment		2 - 3 years

Maintenance and repairs that do not extend the life of or improve the asset are expensed in the year incurred. Leasehold improvements are depreciated over the estimated useful life (usually 3-8 years) or the life of the associated lease, whichever is less. During the year ended December 31, 2014, the Company recorded approximately $0.7 million of leasehold improvement assets that were paid by the landlord, with a corresponding long-term liability as the tenant improvement allowance was determined to be an incentive for renewing the lease.

Intangible Assets

Intangible assets primarily consist of acquired technology. The Company amortizes, to cost of revenue, definite-lived intangible assets on a straight-line basis over the life of the technology.

Impairment of Long-Lived Assets

The carrying value of long-lived assets is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. An impairment loss is recognized when the carrying amount of an asset exceeds the estimated undiscounted future cash flows expected to result from the use of the asset and its eventual disposition. The amount of the impairment loss to be recorded is calculated by the excess of the asset’s carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis.

Foreign Currency Translation

The functional currency of the Company’s subsidiaries in the United Kingdom, China, Hong Kong and India are the Pound Sterling, the Chinese Yuan, the Hong Kong Dollar and the Indian Rupee, respectively. The subsidiary’s assets and liabilities have been translated to U.S. dollars using the exchange rates in effect at the balance sheet dates. Statements of operations amounts have been translated using the average exchange rate for each year. Resulting gains or losses from translating foreign currency financial statements are recorded as other comprehensive income (loss). Foreign currency transaction gains (losses) resulting from exchange rate fluctuations on transactions denominated in a currency other than the local currency are included in other income (expense) and have not been material for the years ended December 31, 2012, 2013 or 2014.

Stock-Based Compensation

The Company recognizes compensation expense for all stock-based awards issued to employees and directors based on estimated grant date fair values. The Company selected the Black-Scholes option-pricing model to determine the estimated fair value at the date of grant for stock options. The Company elected to amortize compensation expense using the straight-line attribution method, under which stock-based compensation expense is recognized on a straight-line basis over the period the employee performs the related services, generally the vesting period of four years, net of estimated forfeitures. The Company has estimated forfeiture rates based on its historical experience and will update the rates, as necessary, in subsequent periods if actual forfeitures differ from initial estimates.

The Black-Scholes option-pricing model requires management assumptions regarding various factors that require extensive use of accounting judgment and financial estimates. The Company estimates the expected term for options using the simplified method, which utilizes the weighted average expected life of each tranche of the stock option, determined based on the sum of each tranche’s vesting period plus one-half of the period from the vesting date of each tranche to the stock option’s expiration, because the Company’s options are considered “plain vanilla.” The Company computed the expected volatility using multiple peer companies for a period approximating the expected term. The risk-free interest rate was determined using the implied yield on U.S. Treasury issues with a remaining term within the expected life of the award.

The Company accounts for stock-based instruments and awards issued to non-employees at fair value using the Black-Scholes option-pricing model. Management believes that the fair value of the stock-based awards is more reliably measured than the fair value of the services received. The fair value of each non-employee award is re-measured each period until a commitment date is reached, which is generally the vesting date.

Income Taxes

The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to the differences between the financial statement carrying value of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the fiscal year in which those temporary differences are expected to be recovered or settled. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized.

The Company operates in various tax jurisdictions and is subject to audit by various tax authorities. The Company provides for tax contingencies whenever it is deemed probable that a tax asset has been impaired or a tax liability has been incurred for events such as tax claims or changes in tax laws. Tax contingencies are based upon their technical merits, relative tax law and the specific facts and circumstances as of each reporting period. Changes in facts and circumstances could result in material changes to the amounts recorded for such tax contingencies.

The Company recognizes uncertain income tax positions taken on income tax returns at the largest amount that is more-likely-than-not to be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained.

The Company’s policy for recording interest and penalties associated with uncertain tax positions is to record such items as a component of its income tax provision. During the years ended December 31, 2012, 2013 and 2014, we did not record any material interest income, interest expense or penalties related to uncertain tax positions or the settlement of audits for prior periods.

Presentation of Certain Taxes

The Company collects various taxes from dealers and distributors and remits these amounts to the applicable taxing authorities. The Company’s accounting policy is to exclude these taxes from revenue and cost of revenue.

Research and Development

Research and development expenses consist primarily of personnel costs, including incentive compensation, depreciation associated with research and development equipment, contract labor and consulting services, facilities- related costs, and travel-related costs. Research and development costs are expensed as incurred.

Recent Accounting Pronouncements

In July 2013, the FASB issued ASU 2013-11, ‘‘Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists.’’ The amended guidance requires an entity to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The guidance was effective for the Company beginning January 1, 2014. The adoption of this guidance did not have an impact on the Company’s results of operations, financial position, or cash flows as it relates only to financial statement presentation.

In May 2014, the FASB issued ASU 2004-09, “Revenue from Contracts with Customers (Topic 606),” which amends the guidance in ASC 605, “Revenue Recognition.” The core principle of the guidance 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. The guidance is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is still evaluating the impact of adopting this guidance as well as whether the Company will apply the amendments retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of applying this update at the date of initial application.

In August 2014, the FASB issued ASU 2014-15, ‘‘Presentation of Financial Statements — Going Concern (Subtopic 205-40).’’ The amended guidance requires an entity to prepare financial statements under the liquidation basis of accounting in accordance with Subtopic 205-30, Presentation of Financial Statements—Liquidation Basis of Accounting, if liquidation of the entity becomes imminent. The guidance is effective for the annual period ending on December 31, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The adoption of this guidance will not have an impact on the Company’s results of operations, financial position, or cash flows.

Balance_Sheet_Components

Balance Sheet Components	12 Months Ended
	Dec. 31, 2014
Balance Sheet Components
Balance Sheet Components
	2. Balance Sheet Components

	Inventories consisted of the following (in thousands):
		December 31,			December 31,
		2013			2014
	Finished goods	$	14,061		$	13,324
	Component parts	1,251			888
		$	15,312		$	14,212

	Property and equipment, net consisted of the following (in thousands):
		December 31,			December 31,
		2013			2014
	Computer equipment and software	$	4,152		$	4,390
	Manufacturing tooling and test equipment	2,652			2,777
	Furniture and fixtures	2,046			2,298
	Lab and warehouse equipment	2,374			2,652
	Marketing equipment	604			662
	Leasehold improvements	1,450			2,357
		13,278			15,136
	Less: accumulated depreciation	(9,335		)	(10,047		)
		$	3,943		$	5,089

	Other assets consisted of the following (in thousands):
		December 31,			December 31,
		2013			2014
	Prepaid licensing	$	716		$	632
	Deposits	404			697
		$	1,120		$	1,329

	Accrued liabilities consisted of the following (in thousands):
		December 31,			December 31,
		2013			2014
	Sales returns and warranty accruals	$	2,137		$	2,019
	Compensation accruals	3,233			1,614
	Other accrued liabilities	544			1,097
	Current portion of settlement obligations	907			20
		$	6,821		$	4,750

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Measurements
Fair Value Measurements
	3. Fair Value Measurements

	Assets Measured and Recorded at Fair Value on a Recurring Basis

	The Company’s financial assets that are measured at fair value on a recurring basis consist of money market funds and available-for-sale investments. The following three levels of inputs are used to measure the fair value of financial instruments:

	Level 1: Quoted prices in active markets for identical assets or liabilities.

	Level 2: Observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

	Level 3: Unobservable inputs are used when little or no market data is available.

	The fair values for substantially all of the Company’s financial assets are based on quoted prices in active markets or observable inputs. For Level 2 securities, the Company uses a third-party pricing service which provides documentation on an ongoing basis that includes, among other things, pricing information with respect to reference data, methodology, inputs summarized by asset class, pricing application and corroborative information.

	The Company determines realized gains or losses on the sale of marketable securities on a specific identification method. During the year ended December 31, 2014, the Company did not record significant realized gains or losses on the sales of available-for-sale investments. The following tables show the Company’s cash and available-for-sale investments’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or short- or long-term investments as of December 31, 2013 and December 31, 2014 (in thousands):

		December 31, 2013
		Adjusted		Unrealized		Unrealized			Fair Value		Cash and		Short-term		Long-term
		Cost		Gains		Losses					Cash		Investments		Investments
											Equivalents

	Cash	$	5,533	$	—	$	—		$	5,533	$	5,533	$	—	$	—

	Level 1:
	Money market funds	79,013		—		—			79,013		79,013		—		—
	Subtotal	79,013		—		—			79,013		79,013		—		—

	Total	$	84,546	$	—	$	—		$	84,546	$	84,546	$	—	$	—

		December 31, 2014
		Adjusted		Unrealized		Unrealized			Fair Value		Cash and		Short-term		Long-term
		Cost		Gains		Losses					Cash		Investments		Investments
											Equivalents

	Cash	$	13,077	$	—	$	—		$	13,077	$	13,077	$	—	$	—

	Level 1:
	Money market funds	16,110		—		—			16,110		16,110		—		—
	Subtotal	16,110		—		—			16,110		16,110		—		—

	Level 2:
	Asset-backed securities	4,458		—		(3		)	4,455		—		—		4,455
	Corporate bonds	54,321		2		(46		)	54,277		—		46,726		7,551
	Commercial paper	6,797		—		—			6,797		—		6,797		—
	U.S. agency securities	2,503		—		—			2,503		—		—		2,503
	Subtotal	68,079		2		(49		)	68,032		—		53,523		14,509

	Total	$	97,266	$	2	$	(49	)	$	97,219	$	29,187	$	53,523	$	14,509

	As of December 31, 2014, the Company considers the declines in market value of its investment portfolio to be temporary in nature and does not consider any of its investments other-than-temporarily impaired. The Company typically invests in highly-rated securities, and its investment policy generally limits the amount of credit exposure to any one issuer. The policy requires investments generally to be investment grade, with the primary objective of minimizing the potential risk of principal loss. Fair values were determined for each individual security in the investment portfolio. The maturities of the Company’s long-term investments range from one to two years. When evaluating an investment for other-than-temporary impairment the Company reviews factors such as the length of time and extent to which fair value has been below its cost basis, the financial condition of the issuer and any changes thereto, changes in market interest rates, and the Company’s intent to sell, as well as the fact it is not more likely than not that the Company will be required to sell the investment before recovery of the investment’s cost basis, which may be maturity. During the year ended December 31, 2014, the Company did not recognize any significant impairment charges.

	Fair Value of Other Financial Instruments

	The carrying amounts reported in the accompanying consolidated financial statements for cash and cash equivalents, restricted cash, accounts payable and accrued liabilities approximate their fair value because of the short term nature of the accounts. The fair value of the notes payable approximates its carrying value based on the variable nature of interest rates and current market rates available to the Company (see Note 4). As a result, the balance of the notes payable is categorized within the Level 2 fair value hierarchy.

LongTerm_Obligations

Long-Term Obligations	12 Months Ended
	Dec. 31, 2014
Long-Term Obligations
Long-Term Obligations
	4. Long-Term Obligations

	Loan and Security Agreement

	In June 2013, the Company entered into an Amended and Restated Loan and Security Agreement with Silicon Valley Bank (the “SVB Agreement”), which consists of a revolving credit facility of $13.0 million (subject to certain borrowing base restrictions) and term borrowings to fund purchases of property and equipment. All borrowings under the SVB Agreement are collateralized by the general assets of the Company. The revolving credit facility has a variable rate of interest of prime (as published in the Wall Street Journal) or LIBOR plus 2.50%, as selected by the Company. The rate was 3.25% at December 31, 2014. In addition, the Company pays an annual commitment fee of $20,000 and a quarterly unused line fee of 0.375% based on the difference between the borrowing commitment of $13.0 million and the then-current balance. In addition, the SVB Agreement provided for term borrowings to fund purchases of property and equipment through May 2014. Term borrowings are payable in 42 equal monthly payments of principal plus interest and bear interest at prime plus 0.50%, which was 3.75% at December 31, 2014.

	Borrowing under the revolving credit facility is subject to certain collateral restrictions relating primarily to the Company’s accounts receivable and inventory levels. As of December 31, 2014, the total borrowing capacity was approximately $13.0 million, and no borrowings were outstanding. The revolving credit facility has a maturity date of May 29, 2015.

	The SVB Agreement contains various restrictive and financial covenants and the Company was in compliance with each of these covenants as of December 31, 2014.

	Future principal payments on outstanding term borrowings as of December 31, 2014 are as follows (in thousands):

	2015	$	915
	2016	727
	2017	186
		$	1,828

Income_Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2014
Income Taxes
Income Taxes
	5. Income Taxes

	The domestic and foreign components of net income (loss) before income tax expense consists of the following for the periods shown below (in thousands):

			Years Ended December 31,
			2012			2013			2014
	Income (loss) before income taxes:
	Domestic		$	(4,055	)	$	3,633		$	7,464
	Foreign		473			118			1,103
	Total income (loss) before income taxes		$	(3,582	)	$	3,751		$	8,567

	The provision for income taxes consisted of the following components (in thousands):

			Years Ended December 31,
			2012			2013			2014
	Current:
	Domestic
	Federal		$	15		$	64		$	76
	State		57			53			52
	Foreign		69			147			288
	Total current tax expense		141			264			416
	Deferred:
	Domestic
	Federal		(710		)	1,572			1,761
	State		(65		)	44			30
	Foreign		88			(16		)	(5		)
	Valuation allowance		687			(1,616		)	(1,791		)
	Total deferred tax benefit		—			(16		)	(5		)
	Total income tax expense		$	141		$	248		$	411

	A reconciliation from the U.S. statutory federal income tax rate to the effective income tax rate follows:

			Years Ended December 31,
			2012		2013		2014
	Federal income tax rate		(34.0	)%	34	%	34	%
	State taxes, net of federal benefit		1.1		1.1		0.4
	Stock-based compensation		15		22.7		(2.1	)
	Stock warrant		—		6.4		—
	Research and development credits		—		(18.3	)	(8.1	)
	Change in valuation allowance		17.3		(42.0	)	(20.6	)
	Other, net		4.5		2.7		1.2
	Effective income tax rate		3.9	%	6.6	%	4.8	%

	Deferred tax assets and (liabilities) are comprised of the following (in thousands):

			December 31,
			2013			2014
	Deferred Tax Assets:
	Reserves and accruals		$	2,146		$	1,449
	Inventories		1,059			1,063
	Net operating loss carryforwards		27,865			25,007
	Property, plant and equipment		1,327			1,831
	Stock-based compensation		1,233			1,540
	Research and development credit carryforwards		4,091			5,243
	Other		163			—
	Total deferred tax assets		37,884			36,133
	Valuation allowance		(37,842		)	(36,050		)
	Total deferred tax assets		$	42		$	83
	Deferred Tax Liabilities:
	Undistributed earnings of foreign subsidiaries		$	(15	)	$	(56	)
	Intangible assets		—			(116		)
	Property and equipment		(11		)	(16		)
	Total deferred tax liabilities		$	(26	)	$	(188	)
Net deferred tax asset (liability)		$	16		$	(105	)

At December 31, 2013 and 2014, the Company had a full valuation allowance against the deferred tax assets of its domestic operations as it believes it is more likely than not that these benefits will not be realized. Significant judgment is required in determining our provision for income taxes, recording valuation allowances against deferred tax assets and evaluating our uncertain tax positions. In evaluating our ability to recover our deferred tax assets, in full or in part, we consider all available positive and negative evidence, including our past operating results, our forecast of future market growth, forecasted earnings, future taxable income and prudent and feasible tax planning strategies. Due to historical net losses incurred and the uncertainty of realizing the deferred tax assets, for all the periods presented, we have a full valuation allowance against our deferred tax assets. To the extent that we generate positive income and expect, with reasonable certainty, to continue to generate positive domestic income we may release all or a portion of our valuation allowance in a future period. This release would result in the recognition of certain deferred tax assets, a decrease to income tax expense for the period such release is made. In addition, our effective tax rate in subsequent periods would increase, and more closely approximate the federal statutory rate of 34%, after giving consideration to state income taxes, foreign income taxes and the effect of exercising incentive stock options. The net valuation allowance decreased by approximately $1.6 million and $1.8 million during the years ended December 31, 2013 and 2014, respectively.

Net operating loss and tax credit carryforwards as of December 31, 2014 are as follows (in thousands):

		Amount			Expiration Years
Net operating losses, federal		$	85,577		2024 – 2034
Net operating losses, state		86,064			2018 – 2032
Tax credit carryforwards, federal		3,789			2023 – 2034
Tax credit carryforwards, state		2,799			2018 – 2029
Net operating losses, foreign		20			None

Approximately $18.4 million of the net operating losses reported above represents unrecorded tax benefits for stock-based compensation, which will be recorded in additional paid in capital when realized. Utilization of the net operating loss carryforwards and credits may be subject to a substantial annual limitation due to the ownership change limitations provided by the Internal Revenue Code of 1986, as amended (the “IRC”), and similar state provisions. The Company recently performed a detailed analysis under Section 382 of the IRC to determine whether any ownership changes had occurred. The effect of an ownership change would be the potential imposition of annual limitations on the use of net operating loss carryforwards attributable to periods before the change. The detailed analysis confirmed that Section 382 ownership changes occurred on July 29, 2003 and March 27, 2007, but the Company concluded that the ownership changes do not result in any limitations regarding the utilization of net operating loss carryforwards.

The following is a reconciliation of the changes in the gross balance of unrecognized tax benefits, excluding interest and penalties (in thousands):

		Years Ended December 31,
		2012			2013			2014
Balance at the beginning of the period		$	2,318		$	2,318		$	2,943
Current year additions		—			625			640
Balance at the end of the period		$	2,318		$	2,943		$	3,583

The Company does not believe there will be any material changes in its unrecognized tax benefits over the next 12 months. As of December 31, 2014, the amount of unrecognized tax benefits that would, if recognized, impact the Company’s effective income tax rate is approximately $3.6 million.

The Company files income tax returns in the United States, including various state and local jurisdictions. The Company’s subsidiaries file income tax returns in the United Kingdom, Hong Kong, China and India. The Company is subject to examination in the United States, the United Kingdom, Hong Kong, China, and India as well as various state jurisdictions. As of December 31, 2014, the Company was not under examination by any tax authorities. Tax years beginning in 2011 are subject to examination by tax authorities in the United States, although net operating loss and credit carryforwards from all years are subject to examinations and adjustments for at least three years following the year in which the attributes are used. Tax years beginning in 2012 are subject to examination by the taxing authorities in Hong Kong. Tax years beginning in 2013 are subject to examination by the taxing authorities in the United Kingdom, China, and India.

At December 31, 2014, the Company had undistributed foreign earnings of $1.5 million, which the Company intends to permanently reinvest in the foreign subsidiary. Unrecognized deferred tax liabilities of $0.3 million from temporary differences related to the investment in this foreign subsidiary would have been taxable if the Company repatriated the foreign earnings. The Company anticipates that future overseas earnings will also be reinvested indefinitely. In accordance with the indefinite reversal criteria, the foreign currency gains recorded in other comprehensive income related to foreign currency translation have not been tax effected.

Equity_Compensation

Equity Compensation	12 Months Ended
Equity Compensation	Dec. 31, 2014
Equity Compensation
Equity Compensation
	6. Equity Compensation

	Stock Options

	In 2003, the Board of Directors adopted the 2003 Equity Incentive Plan (the “2003 Plan”), which provided for the granting of nonqualified and incentive stock options, stock appreciation rights, stock awards and restricted stock. Under the 2003 Plan, the Company was able to grant nonqualified and incentive stock options to directors, employees and non-employees providing services to the Company. On June 11, 2013, the Company’s Board of Directors adopted the 2013 Stock Option and Incentive Plan (the “2013 Plan”), which was subsequently approved by the Company’s stockholders. The 2013 Plan became effective as of the closing of the Company’s initial public offering. To the extent that any awards outstanding under the 2003 Plan are forfeited or lapse unexercised subsequent to August 1, 2013, the shares of common stock subject to such awards will become available for issuance under the 2013 Plan. The 2013 Plan provides for annual increases in the number of reserved shares of up to 5% of the outstanding number of shares of the Company’s Common Stock as of the preceding December 31. On January 1, 2015, the number of reserved shares was increased by 1,215,269 shares in accordance with the provisions of the 2013 Plan.

	A summary of stock option activity for the years ended December 31, 2012, 2013 and 2014 is presented below:

			Shares Subject		Weighted			Weighted			Weighted
			to Options		Average			Average			Average
			Outstanding		Grant Date			Exercise Price			Remaining
					Fair Value						Contractual
											Life (Years)
	Balance at December 31, 2012		4,649,238					$	5.56
	Granted		480,698		$	10.08		13.2
	Exercised		(107,042	)				4.17
	Expired		(27,772	)				5.79
	Forfeited		(89,908	)				7.14
	Balance at December 31, 2013		4,905,214					6.31
	Granted		1,592,268		9.99			18
	Exercised		(1,512,514	)				4.24
	Expired		(136	)				7.4
	Forfeited		(133,611	)				13.77
	Balance at December 31, 2014		4,851,221					10.57

	Exercisable options at December 31, 2013		3,285,695					4.88			4.9
	Vested and expected to vest at December 31, 2013		4,544,942					6.15			5.9
	Exercisable options at December 31, 2014		2,494,711					6.33			5.6
	Vested and expected to vest at December 31, 2014		4,615,485					10.3			7

	The following table summarizes information about stock options outstanding and exercisable at December 31, 2014:

			Options Outstanding							Options Exercisable
	Range of Exercise Prices		Weighted			Number of		Weighted-		Number of		Weighted-
			Average			Underlying		Average		Underlying		Average
			Exercise			Shares		Remaining		Shares		Remaining
			Price					Contractual				Contractual
								Life (in				Life (in
								years)				years)
	$0.78 - 1.72		$	1.10		37,399		0.8		37,399		0.8
	1.97 - 3.38		2.57			248,746		1.9		248,746		1.9
	3.58 - 6.14		5.64			1,570,282		5.7		1,416,661		5.6
	6.34 - 9.94		8.27			1,007,227		7.2		627,128		7.1
	11.28 - 16.97		13.94			1,180,368		9.0		143,901		6.3
	17.66 - 22.92		21.00			807,199		9.1		20,876		8.1
						4,851,221				2,494,711

	For the stock option awards vested during the three and twelve months ended December 31, 2014, the total fair value was $0.8 million and $4.0 million, respectively. The following table summarizes the aggregate intrinsic-value of options exercised, outstanding and exercisable (in thousands):

			For the Years Ended and as of
			December 31,
			2012			2013			2014
	Options Exercised		$	1,310		$	1,315		$	22,668
	Options Exercisable		16,800			42,116			22,718
	Options Vested and Expected to Vest		25,773			55,099			27,663

	The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:

			Years Ended December 31,
			2012		2013		2014
	Expected volatility		59 - 63%		56 - 59%		49 - 60%
	Expected dividends		0%		0%		0%
	Expected terms (in years)		5.0 - 6.1		3.3 - 7.2		1.0 - 6.1
Risk-free rate		0.7 - 1.0%		0.8 - 1.7%		0.3 - 2.0%

Total stock-based compensation expense has been classified as follows in the accompanying statements of operations (in thousands):

		Years Ended December 31,
		2012			2013			2014
Cost of revenue		$	78		$	63		$	105
Research and development		704			1,414			2,235
Sales and marketing		580			743			1,110
General and administrative		1,507			1,540			1,891
Total stock-based compensation expense		$	2,869		$	3,760		$	5,341

At December 31, 2014, there was $18.6 million of total unrecognized compensation cost related to non-vested stock option awards that will be recognized over a weighted-average period of 3.1 years.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions
Related Party Transactions
	7. Related Party Transactions

	The Company has entered into sales agreements with companies affiliated with certain of its investors. The following table sets forth revenue from product sales to these companies (in thousands):

		Years Ended December 31,
		2012		2013		2014
	Company 1	$	2,142	$	2,889	$	4,108
	Company 2	1,290		950		682
	Company 3	791		426		19
	Company 4	1,807		129		—
		$	6,030	$	4,394	$	4.809

	As of December 31, 2013 and 2014, the Company had accounts receivable from these companies totaling $0.6 million and $1.5 million, respectively. Purchase and payment terms with these related parties are consistent with other non-affiliated companies.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies
Commitments and Contingencies
	8. Commitments and Contingencies

	Operating Leases

	The Company leases office and warehouse space under operating leases that expire between 2015 and 2018. The terms of the leases include periods of free rent, options for the Company to extend the leases (three to five years) and increasing rental rates over time. The Company recognizes rental expense under these operating leases on a straight line basis over the lives of the leases and has accrued for rental expense recorded but not paid.

	Rental expense was approximately $1.1 million, $1.4 million and $1.8 million for the years ended December 31, 2012, 2013 and 2014, respectively.

	Future minimum rental payments required under non-cancelable operating leases with initial or remaining terms in excess of one year consist of the following as of December 31, 2014 (in thousands):

	2015	$	1,971
	2016	1,887
	2017	1,655
	2018	873
		$	6,386

	Purchase Commitments

	The Company had non-cancellable purchase commitments for the purchase of inventory, which extend through July 2015 totaling approximately $27.8 million at December 31, 2014.

	Indemnification

	The Company has agreed to indemnify its officers and directors for certain events or occurrences, while the officer or director is or was serving at the Company’s request in such capacity. The maximum amount of potential future indemnification is unlimited; however, the Company has a director and officer insurance policy that provides corporate reimbursement coverage that limits its exposure and enables it to recover a portion of any future amounts paid. The Company is unable to reasonably estimate the maximum amount that could be payable under these arrangements since these obligations are not capped but are conditional to the unique facts and circumstances involved. Accordingly, the Company has no liabilities recorded for these agreements as of December 31, 2014.

	Employment Agreements

	The Company has signed employment agreements with certain executive officers who are entitled to receive certain benefits if their employment is terminated by the Company, including severance payments, accelerated vesting of stock options and continuation of certain insurance benefits.

	Legal Matters

	On August 12, 2014 and September 16, 2014, respectively, the Company received letters from Nokia Corporation alleging that the Company manufactures or supplies products that practice IEEE 802.11 Standards related to wireless technology, and that Nokia is the owner of a portfolio of patents essential to that standard. The Company is conducting an investigation of the claims made by Nokia regarding its patent portfolio. Nokia has not initiated litigation against the Company, but the Company believes that Nokia may do so. The Company intends to defend itself vigorously with respect to this and any other claims or litigation. Since no complaint has been filed and the outcome of any potential legal proceedings related to these claims is uncertain at this time, we cannot estimate the amount of liability, if any, that could result from an adverse resolution of this matter.

	The Company establishes reserves for specific liabilities in connection with legal actions that it deems to be probable and estimable. In management’s opinion, the Company is not currently involved in any legal proceedings other than specifically identified above, that individually or in the aggregate, could have a material effect on the Company’s financial condition, operations, or cash flows. Currently, a range of loss associated with any individual material legal proceeding cannot be reasonably estimated.

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2014
Acquisition
Acquisition
	9. Acquisition

	On September 10, 2014, Control4 Corporation (“Control4”), through its wholly owned subsidiary, Control4 EMEA, LTD (“Control4 EMEA”), completed the acquisition of Extra Vegetables Limited, a company incorporated in England and Wales (“Extra Vegetables”), pursuant to a Stock Purchase Agreement dated August 28, 2014, by and among Control4 EMEA and all of the shareholders of Extra Vegetables (the “Purchase Agreement”). Extra Vegetables developed integration modules and third-party device drivers for Control4 and other third-party home automation systems.

	Pursuant to the terms of the Purchase Agreement, Control4 EMEA purchased all of the issued and outstanding shares of Extra Vegetables from its shareholders (each a “Selling Shareholder,” and together, the “Selling Shareholders”) and Extra Vegetables became a wholly owned subsidiary of Control4 EMEA. Each Selling Shareholder also agreed to become an employee of Control4 EMEA or Control4. The total consideration transferred was $0.9 million in cash, which included a base purchase price of $0.7 million and $0.2 million as payment for Extra Vegetables’ net working capital.

	Total consideration transferred was allocated to tangible and identifiable intangible assets acquired and liabilities assumed based on their fair values at the acquisition date as set forth below. While, from the acquisition date, the Extra Vegetables products will be provided without charge of a separate fee, the Company believes that the acquisition of Extra Vegetables will strengthen the Company’s interoperability development efforts for the connected home, accelerate the development and time-to-market for essential third-party device drivers, offer more comprehensive technical support, deliver better functionality, and provide more integration opportunities, while eliminating complexity for the Company’s dealers and distributors managing multiple vendors, licensing, and permission models. Management estimated the fair values of tangible and intangible asset and liabilities in accordance with the applicable accounting guidance for business combinations.

	The Company’s allocation of consideration transferred for Extra Vegetables is as follows (in thousands):

		Estimated Fair Value
	Cash	$	265
	Other assets acquired	125
	Intangible assets	596
	Goodwill	211
	Total assets acquired	1,197
	Taxes payable	175
	Deferred income tax liability	132
	Other liabilities assumed	8
	Total net assets acquired	$	882

	Identifiable Intangible Assets

	The Company acquired intangible assets that consisted of developed technology and non-compete agreements, which had estimated fair values of $574,000 and $22,000, respectively. The assets were measured at fair value reflecting the highest and best use of nonfinancial assets in combination with other assets and liabilities using an income approach that discounts expected future cash flows to present value. The estimated net cash flows were discounted using a discount rate of 22%, which is based on the estimated internal rate of return for the acquisition and represents the rate that market participants might use to value the intangible assets. The projected cash flows were determined using key assumptions such as: estimates of revenues and operating profits; the time and resources needed to recreate integration modules and drivers; the life of the product; and associated risks related to viability and product alternatives. The Company will amortize the intangible assets on a straight-line basis over their estimated useful lives of four years for developed technology and two years for non-competition agreements. These intangible assets are not deductible for income tax purposes.

	Goodwill

	Goodwill of $211,000 represents the excess of consideration transferred over the fair value of assets acquired and liabilities assumed and is attributable to Extra Vegetables’ assembled workforce as well as the benefits expected from combining the Company’s research and engineering operations with Extra Vegetables’. This goodwill is not deductible for income tax purposes.

	Other

	From the date of acquisition through December 31, 2014, the Company recorded revenue and net income associated with Extra Vegetables of approximately $17,500 and $21,900, respectively. Additionally, the Company incurred approximately $80,000 in total acquisition-related costs accounted for in general and administrative expenses.

	Pro Forma Information

	The unaudited pro forma information presented below includes the effects of the Extra Vegetables acquisition as if it had been consummated as of January 1, 2013, with adjustments to give effect to pro forma events that are directly attributable to the acquisition, including adjustments related to the amortization of acquired intangible assets. The unaudited pro forma information does not reflect any operating efficiency or potential cost savings, which may result from the consolidation of Extra Vegetables. Accordingly, the unaudited pro forma information is presented for informational purposes only and is not necessarily indicative of what the actual results of the combined company would have been if the acquisition had occurred at the beginning of the period presented, nor is it indicative of the future results of operations. In fact, the Company plans to provide the Extra Vegetables products in Control4’s driver database and make them freely available to Control4 dealers through the Company’s installation software; therefore, the Company will not generate any direct, stand-alone product revenue from the Extra Vegetables technology in future periods.

		Years Ended
		December 31,
		2013		2014
		(in thousands)
	Revenue	$	129,794	$	149,898
	Income from operations	5,753		9,576
	Net income	$	4,128	$	8,724
	Net income per share, basic	$	0.39	$	0.37
	Net income per share, diluted	$	0.19	$	0.34

Goodwill_and_Intangible_assets

Goodwill and Intangible assets	12 Months Ended
Goodwill and Intangible assets	Dec. 31, 2014
Goodwill and Intangible Assets
Goodwill and Intangible Assets
	10. Goodwill and Intangible Assets

	Goodwill

	Changes in the carrying amount of goodwill consisted of the following (in thousands):

		Amount
	Balance at December 31, 2013	$	—
	Current period acquisitions	231
	Balance at December 31, 2014	$	231

	For a discussion of the significant changes in goodwill, see Note 9. The Company’s goodwill is not deductible for income tax purposes.

	Intangible assets

	The Company’s intangible assets and related accumulated amortization consisted of the following as of December 31, 2013 and December 31, 2014 (in thousands):

		December 31, 2013
		Gross Carrying		Accumulated			Net
		Amount		Amortization			Net
	Developed technology	$	1,647	$	(742	)	$	905
	Non-competition agreements	31		(8		)	23
	Total intangible assets	$	1,678	$	(750	)	$	928

		December 31, 2014
		Gross Carrying		Accumulated			Net
		Amount		Amortization			Net
	Developed technology	$	2,597	$	(1,214	)	$	1,383
	Non-competition agreements	53		(27		)	26
	Total intangible assets	$	2,650	$	(1,241	)	$	1,409

	For a discussion of the significant changes in intangible assets, see Note 9. The weighted average amortization period is 4.4 years for developed technology, 2.0 years for non-competition agreements, and 4.3 years in total.

	The Company recorded amortization expense during the respective periods for these intangible assets as follows: (in thousands):

		Years Ended
		December 31,
		2013		2014
	Amortization of intangible assets	$	319	$	491

	Amortization of finite lived intangible assets as of December 31, 2014 is as follows for the next four years (in thousands):

		Amount
	2015	$	612
	2016	418
	2017	237
	2018	142
		$	1,409

Subsequent_Event

Subsequent Event	12 Months Ended
Subsequent Event	Dec. 31, 2014
Subsequent Event
Subsequent Event
	11. Subsequent Event

	On January 30, 2015, Control4 Corporation (“Control4”), through its wholly owned subsidiary, Control4 Australia Holdings Pty., Ltd (“Control4 Australia”), completed the acquisition of Nexus Technologies Pty., Ltd. (“Nexus”), an Australia-based provider of audio/video distribution products (under the brand of “Leaf”), pursuant to a Share Sale Agreement dated January 30, 2015, by and among Control4 Australia and all of the shareholders of Nexus. Control4 had previously sold select Leaf products to its North American dealer network. Through this acquisition, Control4 is now in a better position to offer the complete array of Leaf products to Control4 distribution partners throughout the world, gain market share in the growing A/V category, and leverage Leaf’s valuable engineering expertise to develop new and innovative A/V entertainment solutions.

	Pursuant to the terms of the Share Sale Agreement, Control4 Australia purchased all of the issued and outstanding shares of Nexus from its shareholders and Nexus became a wholly owned subsidiary of Control4 Australia. The total consideration transferred was $9.0 million in cash, subject to final adjustment for certain working capital calculations. In addition, the Company paid a commission of $0.5 million to an agent. The Company determined the Nexus acquisition to be an immaterial transaction under Rule 3-05 of Regulation S-X.

	The Company is in the process of determining the fair values of the net assets acquired and will include Nexus’ results of operations in its financial statements with effect from the purchase date. Due to the timing of the acquisition, it is not currently practicable to include any preliminary disclosures of estimated fair values or pro forma information.

Description_of_Business_and_Su1

Description of Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Description of Business and Summary of Significant Accounting Policies
Reclassifications	Reclassifications

	Certain prior-year amounts have been reclassified in order to conform to the current-year presentation. A reclassification was made from general and administrative expenses to other income (expense) related to foreign currency transaction gains (losses). As a result, income from operations is impacted by $0 and $34,000 for the years ended December 31, 2012 and 2013, respectively, but this reclassification did not impact previously reported net income, or related per share amounts. In addition, a reclassification was made related to international hospitality revenue previously disclosed as United States hospitality revenue. The reclassification did not materially impact previous disclosures related to geographic information. Furthermore, this reclassification had no effect on previously reported amounts related to total revenue, income from continuing operations, net income or related per share amounts, and does not impact previous disclosures regarding concentrations of revenue.

Basis of Presentation	Basis of Presentation

	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in the consolidated financial statements.

Segment Reporting	Segment Reporting

	Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision-maker, the Chief Executive Officer, in making decisions regarding resource allocation and accessing performance. To date, the Company has viewed its operations and manages its business as one operating segment.

Concentrations of Risk	Concentrations of Risk

	The Company’s accounts receivable are derived from revenue earned from its worldwide network of independent dealers and distributors. The Company’s sales to dealers and distributors located outside the United States are generally denominated in United States dollars, except for sales to dealers and distributors located in the United Kingdom and the European Union, which are generally denominated in pounds sterling and the euro, respectively. There were no individual account balances greater than 10% of total accounts receivable at December 31, 2013 and December 31, 2014.

	No dealer or distributor accounted for more than 10% of total revenue for the years ended December 31, 2012, 2013 and 2014.

	The Company relies on a limited number of suppliers for its contract manufacturing. A significant disruption in the operations of these manufacturers would impact the production of the Company’s products for a substantial period of time, which could have a material adverse effect on the Company’s business, financial condition and results of operations.

Geographic Information	Geographic Information

	The Company’s revenue includes amounts earned through sales to dealers and distributors located outside of the United States. With the exception of Canada, no single foreign country accounted for more than 10% of total revenue for the years ended December 31, 2012, 2013 and 2014. The following table sets forth revenue from the U.S., Canadian and all other international dealers and distributors combined (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Revenue-United States	$	69,957		$	84,474		$	98,276
	Revenue-Canada	12,453			15,014			15,320
	Revenue-all other international sources	27,102			29,023			35,204
	Total revenue	$	109,512		$	128,511		$	148,800
	International revenue (excluding Canada) as a percent of total revenue	25		%	23		%	24		%


Use of Accounting Estimates	Use of Accounting Estimates

	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates including those related to revenue recognition, sales returns, provisions for doubtful accounts, product warranty, inventory obsolescence, litigation, determination of fair value of stock options, deferred tax asset valuation allowances and income taxes. Actual results may differ from those estimates.

Product Warranty	Product Warranty

	The Company provides its customers a limited product warranty of two years, which requires the Company, at its option, to repair or replace defective products during the warranty period at no cost to the customer or refund the purchase price. The Company estimates the costs that may be incurred to replace, repair or issue a refund for defective products and records a reserve at the time revenue is recognized. Factors that affect the Company’s warranty liability include the number of installed systems, the Company’s historical experience and management’s judgment regarding anticipated rates of product warranty returns, net of refurbished products. The Company assesses the adequacy of its recorded warranty liability each period and makes adjustments to the liability as necessary. Warranty costs accrued includes amounts accrued for products at the time of shipment, adjustments for changes in estimated costs for warranties on products shipped in the period, and changes in estimated costs for warranties on products shipped in prior periods. It is not practicable for the Company to determine the amounts applicable to each of these components.

	The following table presents the changes in the product warranty liability (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Balance at the beginning of the period	$	1,030		$	1,155		$	1,213
	Warranty costs accrued	1,050			1,025			1,145
	Warranty claims	(925		)	(967		)	(1,167		)
	Balance at the end of the period	$	1,155		$	1,213		$	1,191


Net Income (Loss) Per Share	Net Income (Loss) Per Share

	Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed using the weighted-average number of common shares outstanding and potentially dilutive common shares outstanding during the period that have a dilutive effect on net income per share. Potentially dilutive common shares result from the assumed exercise of outstanding stock options and the assumed conversion of outstanding convertible preferred stock and warrants using the if-converted method. In a net loss position, diluted net loss per share is computed using only the weighted-average number of common shares outstanding during the period, as any additional common shares would be anti-dilutive.

	The following table presents the reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per share (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Numerator:
	Net income (loss)	$	(3,723	)	$	3,503		$	8,156
	Denominator:
	Weighted average common stock outstanding for basic net income (loss) per common share	2,360			10,609			23,685
	Effect of dilutive securities—stock options, convertible preferred stock, and warrants to purchase common stock and preferred stock	—			11,654			1,961
	Weighted average common shares and dilutive securities outstanding	2,360			22,263			25,646

	The following weighted-average common stock equivalents were anti-dilutive and therefore were excluded from the calculation of diluted net income (loss) per share (in thousands):

		Years Ended December 31,
		2012		2013		2014
	Convertible preferred stock	15,294		—		—
	Options to purchase common stock	4,317		356		1,041
	Warrants to purchase common stock	541		1		—
	Warrants to purchase preferred stock	194		—		—
	Total	20,346		357		1,041


Revenue Recognition	Revenue Recognition

	The Company sells its products through a network of independent dealers, regional and national retailers and distributors. These dealers, retailers and distributors generally sell the Company’s products to the end consumer as part of a bundled sale, which typically includes other third-party products and related services, project design and installation services and on-going support.

	The Company records estimated reductions to revenue for dealer, retailer and distributor incentives, primarily comprised of volume rebates, at the time of the initial sale. The estimated reductions to revenue for rebates are based on the sales terms and the Company’s historical experience and trend analysis. The most common incentive relates to amounts paid or credited to dealers and distributors for achieving defined volume levels or growth objectives.

	The Company’s products include embedded software that is essential to the functionality of the hardware. Accordingly, the hardware and embedded software are accounted for as a single deliverable. In 2013, the Company began bundling Control4 App software licenses with its new controllers. These software licenses do not include acceptance provisions, rights to updates (e.g., when-and-if-available enhancements or upgrades to the functionality of the software) or post-contract customer support such as technical support. When a software license and controller are sold together, a multiple element arrangement exists and revenue is allocated to each deliverable based on relative selling prices. Typically, delivery of both the product and the software license occurs at the same time. The Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable, and collection is reasonably assured. Product or licensed software is considered delivered once it has been shipped and title and risk of loss have been transferred. For most of the Company’s product sales, these criteria are met at the time the product is shipped.

	Software license revenue represents fees earned from activating applications which allow end consumers to manage and control their automation systems using tablets, smartphones and other third-party devices. Software products such as Composer Home and Media Editions are sold on a limited basis and do not constitute a significant portion of revenue. The Company’s perpetual software licenses do not include acceptance provisions, rights to updates or upgrades or post-contract customer support such as technical support; the Company generally recognizes revenue at the time the software license is provided.

	The Company offers a subscription service that allows consumers to control and monitor their homes remotely and allows the Company’s dealers to perform remote diagnostic services. Subscription revenue is deferred at the time of payment and recognized on a straight-line basis over the period the service is provided. Total revenue for subscription services represents less than 10% of total revenue for all periods presented.

	The Company recognizes revenue net of cost of revenue for third-party products sold through the Company’s online ordering system. While the Company assumes credit risk on sales to its dealers and distributors for third-party products, the Company does not determine the product selling price, does not retain associated inventory risks and is not the primary obligor to the end consumer.

	The Company’s agreements with dealers and distributors generally do not include rights of return or acceptance provisions. Even though contractual agreements do not provide return privileges, there are circumstances in which the Company will accept returns. In addition, agreements with certain retail distributors contain price protection and limited rights of return. The Company maintains a reserve for such returns based on the Company’s historical return experience.

	Shipping charges billed to dealers and distributors are included in revenue and related shipping costs are included in cost of revenue.

Cost of Revenue	Cost of Revenue

	Cost of revenue includes the following: the cost of inventory sold during the period, inventory write-down costs, payroll, purchasing costs, royalty obligations, shipping expenses to dealers and distributors and warehousing costs, which include inbound freight costs from manufacturers, rent and payroll and benefit costs.

Cash and Cash Equivalents	Cash and Cash Equivalents

	The Company considers all highly liquid short-term investments with original maturities of three months or less at the time of purchase to be cash equivalents. Cash equivalents consist primarily of money market funds.

Restricted Cash	Restricted Cash

	Restricted cash as of December 31, 2014, is composed of a guarantee made by our subsidiary in the United Kingdom to HM Revenue & Customs related to a customs duty deferment account.

Allowance for Doubtful Accounts	Allowance for Doubtful Accounts

	The Company extends credit to the majority of its dealers and distributors, which consist primarily of small, local businesses. Issuance of credit is based on ongoing credit evaluations by the Company of dealers’ and distributors’ financial condition and generally requires no collateral. Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The Company maintains an allowance for doubtful accounts to reserve for potential uncollectible receivables. The allowance is based upon the creditworthiness of the Company’s dealers and distributors, the dealers’ and distributors’ historical payment experience, the age of the receivables and current market and economic conditions. Provisions for potentially uncollectible accounts are recorded in sales and marketing expenses. The Company writes off accounts receivable balances to the allowance for doubtful accounts when it becomes likely that they will not be collected.

	The following table presents the changes in the allowance for doubtful accounts (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Balance at beginning of period	$	651		$	643		$	605
	Provision	184			159			229
	Deductions	(192		)	(197		)	(129		)
	Balance at end of period	$	643		$	605		$	705


Inventories	Inventories

	Inventories consist of hardware and related component parts and are stated at the lower of cost or market using the first-in, first-out method. The Company periodically assesses the recoverability of its inventory and reduces the carrying value of the inventory when items are determined to be obsolete, defective or in excess of forecasted sales requirements. Inventory write-downs for excess, defective and obsolete inventory are recorded as a cost of revenue and totaled $1.5 million, $2.3 million, and $1.7 million for the years ended December 31, 2012, 2013 and 2014, respectively.

	In December 2012, the Company finalized termination of a sales contract and, as a result of the contract termination, recorded a $1.8 million expense associated with an anticipated loss on firm purchase commitments for components that would have been required to meet the Company’s obligations under the terminated contract. The $1.8 million charge has been recorded as Cost of Revenue—Inventory Purchase Commitment in the accompanying consolidated statement of operations during the year ended December 31, 2012.

	In 2013, the Company recorded a gain related to inventory purchase commitments of approximately $0.4 million, as the proceeds from liquidating the underlying inventory and the Company’s ability to consume common components exceeded original estimates.

Property and Equipment	Property and Equipment

	Property and equipment are recorded at historical cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the following estimated useful lives:

	Furniture and fixtures	2 - 5 years
	Manufacturing tooling and test equipment	2 - 3 years
	Lab and warehouse equipment	2 - 4 years
	Computer equipment and software	3 - 4 years
	Marketing equipment	2 - 3 years

	Maintenance and repairs that do not extend the life of or improve the asset are expensed in the year incurred. Leasehold improvements are depreciated over the estimated useful life (usually 3-8 years) or the life of the associated lease, whichever is less. During the year ended December 31, 2014, the Company recorded approximately $0.7 million of leasehold improvement assets that were paid by the landlord, with a corresponding long-term liability as the tenant improvement allowance was determined to be an incentive for renewing the lease.

Intangible Assets	Intangible Assets

	Intangible assets primarily consist of acquired technology. The Company amortizes, to cost of revenue, definite-lived intangible assets on a straight-line basis over the life of the technology.

Impairment of Long-Lived Assets	Impairment of Long-Lived Assets

	The carrying value of long-lived assets is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. An impairment loss is recognized when the carrying amount of an asset exceeds the estimated undiscounted future cash flows expected to result from the use of the asset and its eventual disposition. The amount of the impairment loss to be recorded is calculated by the excess of the asset’s carrying value over its fair value. Fair value is generally determined using a discounted cash flow analysis.

Foreign Currency Translation	Foreign Currency Translation

	The functional currency of the Company’s subsidiaries in the United Kingdom, China, Hong Kong and India are the Pound Sterling, the Chinese Yuan, the Hong Kong Dollar and the Indian Rupee, respectively. The subsidiary’s assets and liabilities have been translated to U.S. dollars using the exchange rates in effect at the balance sheet dates. Statements of operations amounts have been translated using the average exchange rate for each year. Resulting gains or losses from translating foreign currency financial statements are recorded as other comprehensive income (loss). Foreign currency transaction gains (losses) resulting from exchange rate fluctuations on transactions denominated in a currency other than the local currency are included in other income (expense) and have not been material for the years ended December 31, 2012, 2013 or 2014.

Stock-Based Compensation	Stock-Based Compensation

	The Company recognizes compensation expense for all stock-based awards issued to employees and directors based on estimated grant date fair values. The Company selected the Black-Scholes option-pricing model to determine the estimated fair value at the date of grant for stock options. The Company elected to amortize compensation expense using the straight-line attribution method, under which stock-based compensation expense is recognized on a straight-line basis over the period the employee performs the related services, generally the vesting period of four years, net of estimated forfeitures. The Company has estimated forfeiture rates based on its historical experience and will update the rates, as necessary, in subsequent periods if actual forfeitures differ from initial estimates.

	The Black-Scholes option-pricing model requires management assumptions regarding various factors that require extensive use of accounting judgment and financial estimates. The Company estimates the expected term for options using the simplified method, which utilizes the weighted average expected life of each tranche of the stock option, determined based on the sum of each tranche’s vesting period plus one-half of the period from the vesting date of each tranche to the stock option’s expiration, because the Company’s options are considered “plain vanilla.” The Company computed the expected volatility using multiple peer companies for a period approximating the expected term. The risk-free interest rate was determined using the implied yield on U.S. Treasury issues with a remaining term within the expected life of the award.

	The Company accounts for stock-based instruments and awards issued to non-employees at fair value using the Black-Scholes option-pricing model. Management believes that the fair value of the stock-based awards is more reliably measured than the fair value of the services received. The fair value of each non-employee award is re-measured each period until a commitment date is reached, which is generally the vesting date.

Income Taxes	Income Taxes

	The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to the differences between the financial statement carrying value of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the fiscal year in which those temporary differences are expected to be recovered or settled. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized.

	The Company operates in various tax jurisdictions and is subject to audit by various tax authorities. The Company provides for tax contingencies whenever it is deemed probable that a tax asset has been impaired or a tax liability has been incurred for events such as tax claims or changes in tax laws. Tax contingencies are based upon their technical merits, relative tax law and the specific facts and circumstances as of each reporting period. Changes in facts and circumstances could result in material changes to the amounts recorded for such tax contingencies.

	The Company recognizes uncertain income tax positions taken on income tax returns at the largest amount that is more-likely-than-not to be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained.

	The Company’s policy for recording interest and penalties associated with uncertain tax positions is to record such items as a component of its income tax provision. During the years ended December 31, 2012, 2013 and 2014, we did not record any material interest income, interest expense or penalties related to uncertain tax positions or the settlement of audits for prior periods.

Presentation of Certain Taxes	Presentation of Certain Taxes

	The Company collects various taxes from dealers and distributors and remits these amounts to the applicable taxing authorities. The Company’s accounting policy is to exclude these taxes from revenue and cost of revenue.

Research and Development	Research and Development

	Research and development expenses consist primarily of personnel costs, including incentive compensation, depreciation associated with research and development equipment, contract labor and consulting services, facilities- related costs, and travel-related costs. Research and development costs are expensed as incurred.

Recent Accounting Pronouncements	Recent Accounting Pronouncements

	In July 2013, the FASB issued ASU 2013-11, ‘‘Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists.’’ The amended guidance requires an entity to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The guidance was effective for the Company beginning January 1, 2014. The adoption of this guidance did not have an impact on the Company’s results of operations, financial position, or cash flows as it relates only to financial statement presentation.

	In May 2014, the FASB issued ASU 2004-09, “Revenue from Contracts with Customers (Topic 606),” which amends the guidance in ASC 605, “Revenue Recognition.” The core principle of the guidance 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. The guidance is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is still evaluating the impact of adopting this guidance as well as whether the Company will apply the amendments retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of applying this update at the date of initial application.

	In August 2014, the FASB issued ASU 2014-15, ‘‘Presentation of Financial Statements — Going Concern (Subtopic 205-40).’’ The amended guidance requires an entity to prepare financial statements under the liquidation basis of accounting in accordance with Subtopic 205-30, Presentation of Financial Statements—Liquidation Basis of Accounting, if liquidation of the entity becomes imminent. The guidance is effective for the annual period ending on December 31, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The adoption of this guidance will not have an impact on the Company’s results of operations, financial position, or cash flows.

Description_of_Business_and_Su2

Description of Business and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Description of Business and Summary of Significant Accounting Policies
Schedule of revenue from United States, Canada and all other international dealers and distributors combined	The following table sets forth revenue from the U.S., Canadian and all other international dealers and distributors combined (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Revenue-United States	$	69,957		$	84,474		$	98,276
	Revenue-Canada	12,453			15,014			15,320
	Revenue-all other international sources	27,102			29,023			35,204
	Total revenue	$	109,512		$	128,511		$	148,800
	International revenue (excluding Canada) as a percent of total revenue	25		%	23		%	24		%


Schedule of changes in the product warranty liability	The following table presents the changes in the product warranty liability (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Balance at the beginning of the period	$	1,030		$	1,155		$	1,213
	Warranty costs accrued	1,050			1,025			1,145
	Warranty claims	(925		)	(967		)	(1,167		)
	Balance at the end of the period	$	1,155		$	1,213		$	1,191


Schedule of reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per share
	The following table presents the reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per share (in thousands):
		Years Ended December 31,
		2012			2013			2014
	Numerator:
	Net income (loss)	$	(3,723	)	$	3,503		$	8,156
	Denominator:
	Weighted average common stock outstanding for basic net income (loss) per common share	2,360			10,609			23,685
	Effect of dilutive securities—stock options, convertible preferred stock, and warrants to purchase common stock and preferred stock	—			11,654			1,961
	Weighted average common shares and dilutive securities outstanding	2,360			22,263			25,646


Schedule of anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income (loss) per share	The following weighted-average common stock equivalents were anti-dilutive and therefore were excluded from the calculation of diluted net income (loss) per share (in thousands):

		Years Ended December 31,
		2012		2013		2014
	Convertible preferred stock	15,294		—		—
	Options to purchase common stock	4,317		356		1,041
	Warrants to purchase common stock	541		1		—
	Warrants to purchase preferred stock	194		—		—
	Total	20,346		357		1,041


Schedule of changes in the allowance for doubtful accounts	The following table presents the changes in the allowance for doubtful accounts (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Balance at beginning of period	$	651		$	643		$	605
	Provision	184			159			229
	Deductions	(192		)	(197		)	(129		)
	Balance at end of period	$	643		$	605		$	705


Schedule of estimated useful lives of property and equipment
	Furniture and fixtures	2 - 5 years
	Manufacturing tooling and test equipment	2 - 3 years
	Lab and warehouse equipment	2 - 4 years
	Computer equipment and software	3 - 4 years
	Marketing equipment	2 - 3 years

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 2014
Balance Sheet Components
Schedule of inventories	Inventories consisted of the following (in thousands):

		December 31,			December 31,
		2013			2014
	Finished goods	$	14,061		$	13,324
	Component parts	1,251			888
		$	15,312		$	14,212


Schedule of property and equipment, net	Property and equipment, net consisted of the following (in thousands):
		December 31,			December 31,
		2013			2014
	Computer equipment and software	$	4,152		$	4,390
	Manufacturing tooling and test equipment	2,652			2,777
	Furniture and fixtures	2,046			2,298
	Lab and warehouse equipment	2,374			2,652
	Marketing equipment	604			662
	Leasehold improvements	1,450			2,357
		13,278			15,136
	Less: accumulated depreciation	(9,335		)	(10,047		)
		$	3,943		$	5,089


Schedule of other assets	Other assets consisted of the following (in thousands):

		December 31,			December 31,
		2013			2014
	Prepaid licensing	$	716		$	632
	Deposits	404			697
		$	1,120		$	1,329


Schedule of accrued liabilities	Accrued liabilities consisted of the following (in thousands):

		December 31,			December 31,
		2013			2014
	Sales returns and warranty accruals	$	2,137		$	2,019
	Compensation accruals	3,233			1,614
	Other accrued liabilities	544			1,097
	Current portion of settlement obligations	907			20
		$	6,821		$	4,750

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Measurements
Schedule of fair value of financial instruments measured on a recurring basis		December 31, 2013
		Adjusted		Unrealized		Unrealized			Fair Value		Cash and		Short-term		Long-term
		Cost		Gains		Losses					Cash		Investments		Investments
											Equivalents

	Cash	$	5,533	$	—	$	—		$	5,533	$	5,533	$	—	$	—

	Level 1:
	Money market funds	79,013		—		—			79,013		79,013		—		—
	Subtotal	79,013		—		—			79,013		79,013		—		—

	Total	$	84,546	$	—	$	—		$	84,546	$	84,546	$	—	$	—

		December 31, 2014
		Adjusted		Unrealized		Unrealized			Fair Value		Cash and		Short-term		Long-term
		Cost		Gains		Losses					Cash		Investments		Investments
											Equivalents

	Cash	$	13,077	$	—	$	—		$	13,077	$	13,077	$	—	$	—

	Level 1:
	Money market funds	16,110		—		—			16,110		16,110		—		—
	Subtotal	16,110		—		—			16,110		16,110		—		—

	Level 2:
	Asset-backed securities	4,458		—		(3		)	4,455		—		—		4,455
	Corporate bonds	54,321		2		(46		)	54,277		—		46,726		7,551
	Commercial paper	6,797		—		—			6,797		—		6,797		—
	U.S. agency securities	2,503		—		—			2,503		—		—		2,503
	Subtotal	68,079		2		(49		)	68,032		—		53,523		14,509

	Total	$	97,266	$	2	$	(49	)	$	97,219	$	29,187	$	53,523	$	14,509

LongTerm_Obligations_Tables

Long-Term Obligations (Tables)	12 Months Ended
	Dec. 31, 2014
Long-Term Obligations
Schedule of future principal payments on outstanding term borrowings	Future principal payments on outstanding term borrowings as of December 31, 2014 are as follows (in thousands):

	2015	$	915
	2016	727
	2017	186
		$	1,828

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2014
Income Taxes
Schedule of domestic and foreign components of net income (loss) before income tax expense	The domestic and foreign components of net income (loss) before income tax expense consists of the following for the periods shown below (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Income (loss) before income taxes:
	Domestic	$	(4,055	)	$	3,633		$	7,464
	Foreign	473			118			1,103
	Total income (loss) before income taxes	$	(3,582	)	$	3,751		$	8,567


Schedule of components of provision for income taxes	The provision for income taxes consisted of the following components (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Current:
	Domestic
	Federal	$	15		$	64		$	76
	State	57			53			52
	Foreign	69			147			288
	Total current tax expense	141			264			416
	Deferred:
	Domestic
	Federal	(710		)	1,572			1,761
	State	(65		)	44			30
	Foreign	88			(16		)	(5		)
	Valuation allowance	687			(1,616		)	(1,791		)
	Total deferred tax benefit	—			(16		)	(5		)
	Total income tax expense	$	141		$	248		$	411


Schedule of reconciliation from the U.S. statutory federal income tax rate to the effective income tax rate	A reconciliation from the U.S. statutory federal income tax rate to the effective income tax rate follows:

		Years Ended December 31,
		2012		2013		2014
	Federal income tax rate	(34.0	)%	34	%	34	%
	State taxes, net of federal benefit	1.1		1.1		0.4
	Stock-based compensation	15		22.7		(2.1	)
	Stock warrant	—		6.4		—
	Research and development credits	—		(18.3	)	(8.1	)
	Change in valuation allowance	17.3		(42.0	)	(20.6	)
	Other, net	4.5		2.7		1.2
	Effective income tax rate	3.9	%	6.6	%	4.8	%


Schedule of deferred tax assets and (liabilities)	Deferred tax assets and (liabilities) are comprised of the following (in thousands):

		December 31,
		2013			2014
	Deferred Tax Assets:
	Reserves and accruals	$	2,146		$	1,449
	Inventories	1,059			1,063
	Net operating loss carryforwards	27,865			25,007
	Property, plant and equipment	1,327			1,831
	Stock-based compensation	1,233			1,540
	Research and development credit carryforwards	4,091			5,243
	Other	163			—
	Total deferred tax assets	37,884			36,133
	Valuation allowance	(37,842		)	(36,050		)
	Total deferred tax assets	$	42		$	83
	Deferred Tax Liabilities:
	Undistributed earnings of foreign subsidiaries	$	(15	)	$	(56	)
	Intangible assets	—			(116		)
	Property and equipment	(11		)	(16		)
	Total deferred tax liabilities	$	(26	)	$	(188	)
	Net deferred tax asset (liability)	$	16		$	(105	)


Schedule of net operating loss and tax credit carryforwards	Net operating loss and tax credit carryforwards as of December 31, 2014 are as follows (in thousands):

		Amount			Expiration Years
	Net operating losses, federal	$	85,577		2024 – 2034
	Net operating losses, state	86,064			2018 – 2032
	Tax credit carryforwards, federal	3,789			2023 – 2034
	Tax credit carryforwards, state	2,799			2018 – 2029
	Net operating losses, foreign	20			None


Schedule of reconciliation of the changes in the gross balance of unrecognized tax benefits, excluding interest and penalties	The following is a reconciliation of the changes in the gross balance of unrecognized tax benefits, excluding interest and penalties (in thousands):

		Years Ended December 31,
		2012			2013			2014
	Balance at the beginning of the period	$	2,318		$	2,318		$	2,943
	Current year additions	—			625			640
	Balance at the end of the period	$	2,318		$	2,943		$	3,583

Equity_Compensation_Tables

Equity Compensation (Tables)	12 Months Ended
Equity Compensation (Tables)	Dec. 31, 2014
Equity Compensation
Summary of stock option activity		Shares Subject		Weighted			Weighted			Weighted
		to Options		Average			Average			Average
		Outstanding		Grant Date			Exercise Price			Remaining
				Fair Value						Contractual
										Life (Years)
	Balance at December 31, 2012	4,649,238					$	5.56
	Granted	480,698		$	10.08		13.2
	Exercised	(107,042	)				4.17
	Expired	(27,772	)				5.79
	Forfeited	(89,908	)				7.14
	Balance at December 31, 2013	4,905,214					6.31
	Granted	1,592,268		9.99			18
	Exercised	(1,512,514	)				4.24
	Expired	(136	)				7.4
	Forfeited	(133,611	)				13.77
	Balance at December 31, 2014	4,851,221					10.57

	Exercisable options at December 31, 2013	3,285,695					4.88			4.9
	Vested and expected to vest at December 31, 2013	4,544,942					6.15			5.9
	Exercisable options at December 31, 2014	2,494,711					6.33			5.6
	Vested and expected to vest at December 31, 2014	4,615,485					10.3			7


Summary of stock options outstanding and exercisable	The following table summarizes information about stock options outstanding and exercisable at December 31, 2014:

		Options Outstanding							Options Exercisable
	Range of Exercise Prices	Weighted			Number of		Weighted-		Number of		Weighted-
		Average			Underlying		Average		Underlying		Average
		Exercise			Shares		Remaining		Shares		Remaining
		Price					Contractual				Contractual
							Life (in				Life (in
							years)				years)
	$0.78 - 1.72	$	1.10		37,399		0.8		37,399		0.8
	1.97 - 3.38	2.57			248,746		1.9		248,746		1.9
	3.58 - 6.14	5.64			1,570,282		5.7		1,416,661		5.6
	6.34 - 9.94	8.27			1,007,227		7.2		627,128		7.1
	11.28 - 16.97	13.94			1,180,368		9.0		143,901		6.3
	17.66 - 22.92	21.00			807,199		9.1		20,876		8.1
					4,851,221				2,494,711


Summary of aggregate intrinsic-value of options exercised, exercisable, and vested and expected to vest	The following table summarizes the aggregate intrinsic-value of options exercised, outstanding and exercisable (in thousands):

		For the Years Ended and as of
		December 31,
		2012			2013			2014
	Options Exercised	$	1,310		$	1,315		$	22,668
	Options Exercisable	16,800			42,116			22,718
	Options Vested and Expected to Vest	25,773			55,099			27,663


Schedule of assumptions used to estimate fair value of option awards
		Years Ended December 31,
		2012		2013		2014
	Expected volatility	59 - 63%		56 - 59%		49 - 60%
	Expected dividends	0%		0%		0%
	Expected terms (in years)	5.0 - 6.1		3.3 - 7.2		1.0 - 6.1
	Risk-free rate	0.7 - 1.0%		0.8 - 1.7%		0.3 - 2.0%


Schedule of total stock-based compensation expense classified in statements of operations	Total stock-based compensation expense has been classified as follows in the accompanying statements of operations (in thousands):
		Years Ended December 31,
		2012			2013			2014
	Cost of revenue	$	78		$	63		$	105
	Research and development	704			1,414			2,235
	Sales and marketing	580			743			1,110
	General and administrative	1,507			1,540			1,891
	Total stock-based compensation expense	$	2,869		$	3,760		$	5,341

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2014
Related Party Transactions
Schedule of revenue from product sales to companies affiliated with investors	The Company has entered into sales agreements with companies affiliated with certain of its investors. The following table sets forth revenue from product sales to these companies (in thousands):

		Years Ended December 31,
		2012		2013		2014
	Company 1	$	2,142	$	2,889	$	4,108
	Company 2	1,290		950		682
	Company 3	791		426		19
	Company 4	1,807		129		—
		$	6,030	$	4,394	$	4.809

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies
Schedule of future minimum rental payments required under non-cancelable operating leases	Future minimum rental payments required under non-cancelable operating leases with initial or remaining terms in excess of one year consist of the following as of December 31, 2014 (in thousands):

	2015	$	1,971
	2016	1,887
	2017	1,655
	2018	873
		$	6,386

Acquisition_Tables

Acquisition (Tables)	12 Months Ended
Acquisition (Tables)	Dec. 31, 2014
Acquisition
Schedule of preliminary allocation of consideration transferred	The Company’s allocation of consideration transferred for Extra Vegetables is as follows (in thousands):

		Estimated Fair Value
	Cash	$	265
	Other assets acquired	125
	Intangible assets	596
	Goodwill	211
	Total assets acquired	1,197
	Taxes payable	175
	Deferred income tax liability	132
	Other liabilities assumed	8
	Total net assets acquired	$	882


Pro Forma Information
		Years Ended
		December 31,
		2013		2014
		(in thousands)
	Revenue	$	129,794	$	149,898
	Income from operations	5,753		9,576
	Net income	$	4,128	$	8,724
	Net income per share, basic	$	0.39	$	0.37
	Net income per share, diluted	$	0.19	$	0.34

Goodwill_and_Intangible_assets1

Goodwill and Intangible assets (Tables)	12 Months Ended
Goodwill and Intangible assets (Tables)	Dec. 31, 2014
Goodwill and Intangible Assets
Schedule of changes in carrying amount of goodwill	Changes in the carrying amount of goodwill consisted of the following (in thousands):

		Amount
	Balance at December 31, 2013	$	—
	Current period acquisitions	231
	Balance at December 31, 2014	$	231


Schedule of company's intangible assets and related accumulated amortization	The Company’s intangible assets and related accumulated amortization consisted of the following as of December 31, 2013 and December 31, 2014 (in thousands):

		December 31, 2013
		Gross Carrying		Accumulated			Net
		Amount		Amortization			Net
	Developed technology	$	1,647	$	(742	)	$	905
	Non-competition agreements	31		(8		)	23
	Total intangible assets	$	1,678	$	(750	)	$	928

		December 31, 2014
		Gross Carrying		Accumulated			Net
		Amount		Amortization			Net
	Developed technology	$	2,597	$	(1,214	)	$	1,383
	Non-competition agreements	53		(27		)	26
	Total intangible assets	$	2,650	$	(1,241	)	$	1,409


Schedule of amortization expense during the respective periods	The Company recorded amortization expense during the respective periods for these intangible assets as follows: (in thousands):

		Years Ended
		December 31,
		2013		2014
	Amortization of intangible assets	$	319	$	491


Schedule of amortization of finite-lived intangible assets	Amortization of finite lived intangible assets as of December 31, 2014 is as follows for the next four years (in thousands):

		Amount
	2015	$	612
	2016	418
	2017	237
	2018	142
		$	1,409

Description_of_Business_and_Su3

Description of Business and Summary of Significant Accounting Policies (Details 1) (Operating income (loss), USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Operating income (loss)
Prior Period Reclassifications [Line Items]
Prior Period Reclassification Adjustment	$34,000	$0

Description_of_Business_and_Su4

Description of Business and Summary of Significant Accounting Policies (Details 2)	12 Months Ended
	Dec. 31, 2014
	item
Segment Reporting
Number of operating segments	1

Description_of_Business_and_Su5

Description of Business and Summary of Significant Accounting Policies (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue from U.S., Canadian and all other international dealers and distributors combined
Total revenue	$148,800	$128,511	$109,512
International revenue (excluding Canada) as a percent of total revenue	24.00%	23.00%	25.00%
United States
Revenue from U.S., Canadian and all other international dealers and distributors combined
Total revenue	98,276	84,474	69,957
Canada
Revenue from U.S., Canadian and all other international dealers and distributors combined
Total revenue	15,320	15,014	12,453
All other international sources
Revenue from U.S., Canadian and all other international dealers and distributors combined
Total revenue	$35,204	$29,023	$27,102

Description_of_Business_and_Su6

Description of Business and Summary of Significant Accounting Policies (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Product Warranty
Product warranty period	2 years
Changes in the product warranty liability
Balance at beginning of period	$1,213	$1,155	$1,030
Warranty costs accrued	1,145	1,025	1,050
Warranty claims	-1,167	-967	-925
Balance at end of period	$1,191	$1,213	$1,155

Description_of_Business_and_Su7

Description of Business and Summary of Significant Accounting Policies (Details 5) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income (loss)	$8,156	$3,503	($3,723)
Denominator:
Weighted average common stock outstanding for basic net income per common share (in shares)	23,685	10,609	2,360
Effect of dilutive securities-stock options, convertible preferred stock, and warrants to purchase common stock and preferred stock (in shares)	1,961	11,654
Weighted average common shares and dilutive securities outstanding	25,646	22,263	2,360

Description_of_Business_and_Su8

Description of Business and Summary of Significant Accounting Policies (Details 6)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share
Total (in shares)	1,041	357	20,346
Convertible preferred stock
Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share
Total (in shares)			15,294
Options to purchase common stock
Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share
Total (in shares)	1,041	356	4,317
Warrants to purchase common stock
Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share
Total (in shares)		1	541
Warrants to purchase preferred stock
Anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net income per share
Total (in shares)			194

Description_of_Business_and_Su9

Description of Business and Summary of Significant Accounting Policies (Details 7) (USD $)	1 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Changes in the allowance for doubtful accounts
Allowance for Doubtful Accounts Receivable, Beginning Balance		$605,000	$643,000	$651,000
Provision		229,000	159,000	184,000
Deductions		-129,000	-197,000	-192,000
Allowance for Doubtful Accounts Receivable, Ending Balance	643,000	705,000	605,000	643,000
Inventories
Inventory write-downs		1,700,000	2,300,000	1,500,000
Loss (gain) on inventory purchase commitment	$1,800,000		($380,000)	$1,840,000

Recovered_Sheet1

Description of Business and Summary of Significant Accounting Policies (Details 8) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Property and equipment
Leasehold improvement assets paid by landlord	0.7
Furniture and fixtures \| Minimum
Property and equipment
Estimated useful lives	2 years
Furniture and fixtures \| Maximum
Property and equipment
Estimated useful lives	5 years
Manufacturing tooling and test equipment \| Minimum
Property and equipment
Estimated useful lives	2 years
Manufacturing tooling and test equipment \| Maximum
Property and equipment
Estimated useful lives	3 years
Lab and warehouse equipment \| Minimum
Property and equipment
Estimated useful lives	2 years
Lab and warehouse equipment \| Maximum
Property and equipment
Estimated useful lives	4 years
Computer equipment and software \| Minimum
Property and equipment
Estimated useful lives	3 years
Computer equipment and software \| Maximum
Property and equipment
Estimated useful lives	4 years
Marketing equipment \| Minimum
Property and equipment
Estimated useful lives	2 years
Marketing equipment \| Maximum
Property and equipment
Estimated useful lives	3 years
Leasehold improvements \| Minimum
Property and equipment
Estimated useful lives	3 years
Leasehold improvements \| Maximum
Property and equipment
Estimated useful lives	8 years

Recovered_Sheet2

Description of Business and Summary of Significant Accounting Policies (Details 9)	12 Months Ended
	Dec. 31, 2014
Stock-Based Compensation
Vesting period	4 years
Percentage of period from the vesting date added for determination of weighted average expected life	50.00%

Balance_Sheet_Components_Detai

Balance Sheet Components (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventories
Finished goods	$13,324	$14,061
Component parts	888	1,251
Total inventories	14,212	15,312
Property and equipment, net
Property and equipment, gross	15,136	13,278
Less: accumulated depreciation	-10,047	-9,335
Property and equipment, net	5,089	3,943
Computer equipment and software
Property and equipment, net
Property and equipment, gross	4,390	4,152
Manufacturing tooling and test equipment
Property and equipment, net
Property and equipment, gross	2,777	2,652
Furniture and fixtures
Property and equipment, net
Property and equipment, gross	2,298	2,046
Lab and warehouse equipment
Property and equipment, net
Property and equipment, gross	2,652	2,374
Marketing equipment
Property and equipment, net
Property and equipment, gross	662	604
Leasehold improvements
Property and equipment, net
Property and equipment, gross	$2,357	$1,450

Balance_Sheet_Components_Detai1

Balance Sheet Components (Details 2) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other assets
Prepaid licensing	$632	$716
Deposits	697	404
Other assets total	1,329	1,120
Accrued liabilities
Sales returns and warranty accruals	2,019	2,137
Compensation accruals	1,614	3,233
Other accrued liabilities	1,097	544
Current portion of settlement obligations	20	907
Total accrued liabilities	$4,750	$6,821

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Minimum
Fair Value Measurements
Maturity period of long-term investments	1 year
Maximum
Fair Value Measurements
Maturity period of long-term investments	2 years
Measured on a recurring basis
Fair Value Measurements
Assets, Adjusted Cost	97,266	$84,546
Assets, Unrealized Gains	2
Assets, Unrealized Losses	-49
Assets, Fair Value	97,219	84,546
Measured on a recurring basis \| Cash and Cash Equivalents
Fair Value Measurements
Assets, Fair Value	29,187	84,546
Measured on a recurring basis \| Short-term investments
Fair Value Measurements
Assets, Fair Value	53,523
Measured on a recurring basis \| Long-term investments
Fair Value Measurements
Assets, Fair Value	14,509
Measured on a recurring basis \| Cash
Fair Value Measurements
Assets, Adjusted Cost	13,077	5,533
Assets, Fair Value	13,077	5,533
Measured on a recurring basis \| Cash \| Cash and Cash Equivalents
Fair Value Measurements
Assets, Fair Value	13,077	5,533
Measured on a recurring basis \| Level 1
Fair Value Measurements
Assets, Adjusted Cost	16,110	79,013
Assets, Fair Value	16,110	79,013
Measured on a recurring basis \| Level 1 \| Cash and Cash Equivalents
Fair Value Measurements
Assets, Fair Value	16,110	79,013
Measured on a recurring basis \| Level 1 \| Money market funds
Fair Value Measurements
Assets, Adjusted Cost	16,110	79,013
Assets, Fair Value	16,110	79,013
Measured on a recurring basis \| Level 1 \| Money market funds \| Cash and Cash Equivalents
Fair Value Measurements
Assets, Fair Value	16,110	79,013
Measured on a recurring basis \| Level 2
Fair Value Measurements
Adjusted cost, Available-for-sale investments	68,079
Unrealized Gains, available-for-sale investments	2
Unrealized Losses, available-for-sale investments	-49
Fair value, Available-for-sale investments	68,032
Measured on a recurring basis \| Level 2 \| Short-term investments
Fair Value Measurements
Fair value, Available-for-sale investments	53,523
Measured on a recurring basis \| Level 2 \| Long-term investments
Fair Value Measurements
Fair value, Available-for-sale investments	14,509
Measured on a recurring basis \| Level 2 \| Asset-backed securities
Fair Value Measurements
Adjusted cost, Available-for-sale investments	4,458
Unrealized Losses, available-for-sale investments	-3
Fair value, Available-for-sale investments	4,455
Measured on a recurring basis \| Level 2 \| Asset-backed securities \| Long-term investments
Fair Value Measurements
Fair value, Available-for-sale investments	4,455
Measured on a recurring basis \| Level 2 \| Corporate bonds
Fair Value Measurements
Adjusted cost, Available-for-sale investments	54,321
Unrealized Gains, available-for-sale investments	2
Unrealized Losses, available-for-sale investments	-46
Fair value, Available-for-sale investments	54,277
Measured on a recurring basis \| Level 2 \| Corporate bonds \| Short-term investments
Fair Value Measurements
Fair value, Available-for-sale investments	46,726
Measured on a recurring basis \| Level 2 \| Corporate bonds \| Long-term investments
Fair Value Measurements
Fair value, Available-for-sale investments	7,551
Measured on a recurring basis \| Level 2 \| Commercial paper
Fair Value Measurements
Adjusted cost, Available-for-sale investments	6,797
Fair value, Available-for-sale investments	6,797
Measured on a recurring basis \| Level 2 \| Commercial paper \| Short-term investments
Fair Value Measurements
Fair value, Available-for-sale investments	6,797
Measured on a recurring basis \| Level 2 \| U.S. agency securities
Fair Value Measurements
Adjusted cost, Available-for-sale investments	2,503
Fair value, Available-for-sale investments	2,503
Measured on a recurring basis \| Level 2 \| U.S. agency securities \| Long-term investments
Fair Value Measurements
Fair value, Available-for-sale investments	2,503

LongTerm_Obligations_Details

Long-Term Obligations (Details) (USD $)	1 Months Ended
Long-Term Obligations (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2014
Future principal payments
2015		$915,000
2016		727,000
2017		186,000
Total		1,828,000
Revolving credit facility
Long-Term Obligations
Maximum borrowing capacity	13,000,000
Interest rate at the end of period (as a percent)		3.25%
Annual commitment fee	20,000
Commitment fee for quarterly unused capacity (as a percent)	0.38%
Current borrowing capacity		13,000,000
Borrowings outstanding		$0
Revolving credit facility \| LIBOR
Long-Term Obligations
Variable interest rate basis	LIBOR
Basis spread on variable rate (as a percent)	2.50%
Revolving credit facility \| Prime rate
Long-Term Obligations
Variable interest rate basis	prime
Term borrowings
Long-Term Obligations
Interest rate at the end of period (as a percent)		3.75%
Number of equal monthly payments of principal plus interest		42
Term borrowings \| Prime rate
Long-Term Obligations
Variable interest rate basis	prime
Basis spread on variable rate (as a percent)	0.50%

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
Income Taxes (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income (loss) before income taxes:
Domestic	$7,464,000	$3,633,000	($4,055,000)
Foreign	1,103,000	118,000	473,000
Income (loss) before income taxes	8,567,000	3,751,000	-3,582,000
Domestic
Federal	76,000	64,000	15,000
State	52,000	53,000	57,000
Foreign	288,000	147,000	69,000
Total current tax expense	416,000	264,000	141,000
Domestic
Federal	1,761,000	1,572,000	-710,000
State	30,000	44,000	-65,000
Foreign	-5,000	-16,000	88,000
Valuation allowance	-1,791,000	-1,616,000	687,000
Total deferred tax benefit	-5,000	-16,000
Total income tax expense	411,000	248,000	141,000
Reconciliation from the U.S. statutory federal income tax rate to the effective income tax rate
U.S. federal statutory rate (as a percent)	34.00%	34.00%	-34.00%
State taxes, net of federal benefit (as a percent)	0.40%	1.10%	1.10%
Stock-based compensation (as a percent)	-2.10%	22.70%	15.00%
Stock warrant (as a percent)		6.40%
Research and development credits (as a percent)	-8.10%	-18.30%
Change in valuation allowance (as a percent)	-20.60%	-42.00%	17.30%
Other, net (as a percent)	1.20%	2.70%	4.50%
Effective income tax rate (as a percent)	4.80%	6.60%	3.90%
Deferred Tax Assets:
Reserves and accruals	1,449,000	2,146,000
Inventories	1,063,000	1,059,000
Net operating loss carryforwards	25,007,000	27,865,000
Property, plant and equipment	1,831,000	1,327,000
Stock-based compensation	1,540,000	1,233,000
Research and development credit carryforwards	5,243,000	4,091,000
Other		163,000
Total deferred tax assets	36,133,000	37,884,000
Valuation allowance	-36,050,000	-37,842,000
Total deferred tax assets, net	83,000	42,000
Deferred Tax Liabilities:
Undistributed earnings of foreign subsidiaries	-56,000	-15,000
Intangible Assets	-116,000
Property and equipment	-16,000	-11,000
Total deferred tax liabilities	-188,000	-26,000
Net deferred tax asset (liability)	-105,000	16,000
Increase (decrease) in net valuation allowance	($1,800,000)	($1,600,000)

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	12 Months Ended
Income Taxes (Details 2) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011
Net operating loss and tax credit carryforwards
Unrecorded tax benefits for stock-based compensation	$18,400,000
Reconciliation of the changes in the gross balance of unrecognized tax benefits, excluding interest and penalties
Balance at the beginning of the period	2,943,000	2,318,000	2,318,000
Current year additions	640,000	625,000
Balance at the end of the period	3,583,000	2,943,000	2,318,000
Unrecognized tax benefits that would, if recognized, impact the Company's effective income tax rate	3,600,000
Minimum period for which net operating loss and credit carryforwards are subject to examinations and adjustments	3 years
Undistributed foreign earning	1,500,000
Unrecognized deferred tax liabilities from temporary differences related to the investment in foreign subsidiary that would have been taxable if the Company repatriated the foreign earnings	300,000
Federal
Net operating loss and tax credit carryforwards
Net operating losses	85,577,000
Tax credit carryforwards	3,789,000
State
Net operating loss and tax credit carryforwards
Net operating losses	86,064,000
Tax credit carryforwards	2,799,000
Foreign
Net operating loss and tax credit carryforwards
Net operating losses	$20,000

Equity_Compensation_Details

Equity Compensation (Details) (Stock options, USD $)	12 Months Ended		0 Months Ended
Equity Compensation (Details) (Stock options, USD $)	Dec. 31, 2014	Dec. 31, 2013	Jan. 01, 2015	Aug. 07, 2013
Shares Subject to Options Outstanding
Balance at the beginning of the period (in shares)	4,905,214	4,649,238
Granted (in shares)	1,592,268	480,698
Exercised (in shares)	-1,512,514	-107,042
Expired (in shares)	-136	-27,772
Forfeited (in shares)	-133,611	-89,908
Balance at the end of the period (in shares)	4,851,221	4,905,214
Exercisable options (in shares)	2,494,711	3,285,695
Vested and expected to vest at the end of the period (in shares)	4,615,485	4,544,942
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$9.99	$10.08
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$6.31	$5.56
Granted (in dollars per share)	$18	$13.20
Exercised (in dollars per share)	$4.24	$4.17
Expired (in dollars per share)	$7.40	$5.79
Forfeited (in dollars per share)	$13.77	$7.14
Balance at the end of the period (in dollars per share)	$10.57	$6.31
Exercisable options at the end of the period (in dollars per share)	$6.33	$4.88
Vested and expected to vest (in dollars per share)	$10.30	$6.15
Weighted-Average Remaining Contractual Life
Exercisable options	5 years 7 months 6 days	4 years 10 months 24 days
Vested and expected to vest	7 years	5 years 10 months 24 days
2013 Plan
Stock options
Annual increase in shares authorized for issuance as a percentage of shares outstanding as of the preceding December 31				5.00%
Increase in number of shares authorized for issuance			1,215,269

Equity_Compensation_Details_2

Equity Compensation (Details 2) (Stock options, USD $)	12 Months Ended
Equity Compensation (Details 2) (Stock options, USD $)	Dec. 31, 2014
Options Outstanding
Number of Underlying Shares	4,851,221
Options Exercisable
Number of Underlying Shares	2,494,711
0.78-1.72
Equity compensation
Range of Exercise Price, low end of range (in dollars per share)	$0.78
Range of Exercise Price, high end of range (in dollars per share)	$1.72
Options Outstanding
Weighted Average Exercise Price (in dollars per share)	$1.10
Number of Underlying Shares	37,399
Weighted-Average Remaining Contractual Life	9 months 18 days
Options Exercisable
Number of Underlying Shares	37,399
Weighted-Average Remaining Contractual Life	9 months 18 days
1.97-3.38
Equity compensation
Range of Exercise Price, low end of range (in dollars per share)	$1.97
Range of Exercise Price, high end of range (in dollars per share)	$3.38
Options Outstanding
Weighted Average Exercise Price (in dollars per share)	$2.57
Number of Underlying Shares	248,746
Weighted-Average Remaining Contractual Life	1 year 10 months 24 days
Options Exercisable
Number of Underlying Shares	248,746
Weighted-Average Remaining Contractual Life	1 year 10 months 24 days
3.58-6.14
Equity compensation
Range of Exercise Price, low end of range (in dollars per share)	$3.58
Range of Exercise Price, high end of range (in dollars per share)	$6.14
Options Outstanding
Weighted Average Exercise Price (in dollars per share)	$5.64
Number of Underlying Shares	1,570,282
Weighted-Average Remaining Contractual Life	5 years 8 months 12 days
Options Exercisable
Number of Underlying Shares	1,416,661
Weighted-Average Remaining Contractual Life	5 years 7 months 6 days
6.34-9.94
Equity compensation
Range of Exercise Price, low end of range (in dollars per share)	$6.34
Range of Exercise Price, high end of range (in dollars per share)	$9.94
Options Outstanding
Weighted Average Exercise Price (in dollars per share)	$8.27
Number of Underlying Shares	1,007,227
Weighted-Average Remaining Contractual Life	7 years 2 months 12 days
Options Exercisable
Number of Underlying Shares	627,128
Weighted-Average Remaining Contractual Life	7 years 1 month 6 days
11.28-16.97
Equity compensation
Range of Exercise Price, low end of range (in dollars per share)	$11.28
Range of Exercise Price, high end of range (in dollars per share)	$16.97
Options Outstanding
Weighted Average Exercise Price (in dollars per share)	$13.94
Number of Underlying Shares	1,180,368
Weighted-Average Remaining Contractual Life	9 years
Options Exercisable
Number of Underlying Shares	143,901
Weighted-Average Remaining Contractual Life	6 years 3 months 18 days
17.66-22.92
Equity compensation
Range of Exercise Price, low end of range (in dollars per share)	$17.66
Range of Exercise Price, high end of range (in dollars per share)	$22.92
Options Outstanding
Weighted Average Exercise Price (in dollars per share)	$21
Number of Underlying Shares	807,199
Weighted-Average Remaining Contractual Life	9 years 1 month 6 days
Options Exercisable
Number of Underlying Shares	20,876
Weighted-Average Remaining Contractual Life	8 years 1 month 6 days

Equity_Compensation_Details_3

Equity Compensation (Details 3) (USD $)	3 Months Ended	12 Months Ended
Equity Compensation (Details 3) (USD $)	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock options
Total fair value for the awards vested during the period	$800,000	$4,000,000
Stock options
Intrinsic-value
Options Exercised		22,668,000	1,315,000	1,310,000
Options Exercisable	22,718,000	22,718,000	42,116,000	16,800,000
Options Vested and Expected to Vest	$27,663,000	$27,663,000	$55,099,000	$25,773,000
Assumptions used to estimate fair value of stock options
Expected volatility, minimum (as a percent)		49.00%	56.00%	59.00%
Expected volatility, maximum (as a percent)		60.00%	59.00%	63.00%
Expected dividends (as a percent)		0.00%	0.00%	0.00%
Risk-free rate, minimum (as a percent)		0.30%	0.80%	0.70%
Risk-free rate, maximum (as a percent)		2.00%	1.70%	1.00%
Stock options \| Minimum
Assumptions used to estimate fair value of stock options
Expected term		1 year	3 years 3 months 18 days	5 years
Stock options \| Maximum
Assumptions used to estimate fair value of stock options
Expected term		6 years 1 month 6 days	7 years 2 months 12 days	6 years 1 month 6 days

Equity_Compensation_Details_4

Equity Compensation (Details 4) (Stock options, USD $)	12 Months Ended
Equity Compensation (Details 4) (Stock options, USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Total stock-based compensation expense
Total stock-based compensation expense	$5,341,000	$3,760,000	$2,869,000
Total unrecognized compensation cost related to non-vested stock option awards	18,600,000
Weighted-average period over which unrecognized compensation cost will be recognized	3 years 1 month 6 days
Cost of revenue
Total stock-based compensation expense
Total stock-based compensation expense	105,000	63,000	78,000
Research and development
Total stock-based compensation expense
Total stock-based compensation expense	2,235,000	1,414,000	704,000
Sales and marketing
Total stock-based compensation expense
Total stock-based compensation expense	1,110,000	743,000	580,000
General and administrative
Total stock-based compensation expense
Total stock-based compensation expense	$1,891,000	$1,540,000	$1,507,000

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	12 Months Ended
Related Party Transactions (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transactions
Revenue from product sales	$4,809,000	$4,394,000	$6,030,000
Accounts receivable	1,500,000	600,000
Investors \| Company 1
Related Party Transactions
Revenue from product sales	4,108,000	2,889,000	2,142,000
Investors \| Company 2
Related Party Transactions
Revenue from product sales	682,000	950,000	1,290,000
Investors \| Company 3
Related Party Transactions
Revenue from product sales	19,000	426,000	791,000
Investors \| Company 4
Related Party Transactions
Revenue from product sales		$129,000	$1,807,000

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended
Commitments and Contingencies (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Leases
Rental expense	$1,800,000	$1,400,000	$1,100,000
Future minimum rental payments
2015	1,971,000
2016	1,887,000
2017	1,655,000
2018	873,000
Total	6,386,000
Purchase Commitments
Non-cancellable purchase commitments	$27,800,000
Minimum
Operating Leases
Extension term of leases	3 years
Maximum
Operating Leases
Extension term of leases	5 years

Acquisition_Details

Acquisition (Details) (USD $)	0 Months Ended	4 Months Ended	12 Months Ended
Acquisition (Details) (USD $)	Sep. 10, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Sep. 10, 2014
Preliminary allocation of consideration
Goodwill		$231,000	$231,000
Estimated life of intangible assets			4 years 3 months 18 days
Developed technology
Preliminary allocation of consideration
Estimated life of intangible assets			4 years 4 months 24 days
Non-competition agreement
Preliminary allocation of consideration
Estimated life of intangible assets			2 years
Extra Vegetables Limited
Acquisition
Total Consideration	900,000
Base purchase price	700,000
Net working capital	200,000
Preliminary allocation of consideration
Cash	265,000				265,000
Other assets acquired	125,000				125,000
Intangible assets	596,000				596,000
Goodwill	211,000				211,000
Total assets acquired	1,197,000				1,197,000
Taxes payable	175,000				175,000
Deferred income tax liability	132,000				132,000
Other liabilities assumed	8,000				8,000
Total net assets acquired	882,000				882,000
Business Combination - Revenues and other information
Revenue associated with Extra Vegetables		17,500
Net Income associated with Extra Vegetables		21,900
Acquisition related costs associated with Extra Vegetables		80,000
Proforma information
Revenue			149,898,000	129,794,000
Income from operations			9,576,000	5,753,000
Net income			8,724,000	4,128,000
Net income per share, basic			$0.37	$0.39
Net income per share, diluted			$0.34	$0.19
Extra Vegetables Limited \| Income Approach Valuation Technique
Preliminary allocation of consideration
Discount rate used	22.00%
Extra Vegetables Limited \| Developed technology
Preliminary allocation of consideration
Intangible assets	574,000,000				574,000,000
Estimated life of intangible assets	4 years
Extra Vegetables Limited \| Non-competition agreement
Preliminary allocation of consideration
Intangible assets	$22,000,000				$22,000,000
Estimated life of intangible assets	2 years

Goodwill_and_Intangible_assets2

Goodwill and Intangible assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Combination - goodwill
Current period acquisitions	$231
Balance at end of the period	231
Intangible assets
Gross Carrying Amount	2,650	1,678
Accumulated Amortization	-1,241	-750
Intangible assets, net	1,409	928
Weighted average amortization period	4 years 3 months 18 days
Amortization expense
Amortization of intangible assets	491	319	271
Amortization of finite-lived intangible assets
2015	612
2016	418
2017	237
2018	142
Intangible assets, net	1,409	928
Developed technology
Intangible assets
Gross Carrying Amount	2,597	1,647
Accumulated Amortization	-1,214	-742
Intangible assets, net	1,383	905
Weighted average amortization period	4 years 4 months 24 days
Amortization of finite-lived intangible assets
Intangible assets, net	1,383	905
Non-competition agreement
Intangible assets
Gross Carrying Amount	53	31
Accumulated Amortization	-27	-8
Intangible assets, net	26	23
Weighted average amortization period	2 years
Amortization of finite-lived intangible assets
Intangible assets, net	$26	$23

Subsequent_Event_Details

Subsequent Event (Details) (Subsequent event, Nexus, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Subsequent event \| Nexus
Subsequent event
Total consideration transferred in cash	$9
Commission paid to agent	$0.50

Uncategorized_Items

Uncategorized Items
[us-gaap_TemporaryEquityCarryingAmountAttributableToParent]	116,313,000
[us-gaap_TemporaryEquitySharesIssued]		15,293,960