Gigamon (GIMO) 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 29, 2014	Apr. 30, 2014
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	29-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Trading Symbol	'GIMO	'
Entity Registrant Name	'Gigamon Inc.	'
Entity Central Index Key	'0001484504	'
Current Fiscal Year End Date	'--12-28	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	31,901,500

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 29, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'
Cash and cash equivalents	$55,712	$79,908
Short-term investments	86,960	58,242
Accounts receivable, net of allowance of $0 as of March 29, 2014 and December 28, 2013	16,322	24,528
Inventories, net	1,557	1,484
Deferred tax assets	6,895	3,574
Prepaid expenses and other current assets	5,787	5,606
Total current assets	173,233	173,342
Property and equipment, net	6,004	4,389
Deferred tax assets, non-current	17,713	17,315
Other assets	517	471
TOTAL ASSETS	197,467	195,517
CURRENT LIABILITIES:	'	'
Accounts payable	1,659	1,405
Accrued liabilities	17,146	22,401
Deferred revenue	39,436	37,592
Gigamon LLC members’ distribution payable	0	476
Total current liabilities	58,241	61,874
Deferred revenue, non-current	10,082	9,884
Other liabilities, non-current	949	321
TOTAL LIABILITIES	69,272	72,079
Commitments and Contingencies (Note 6)	'	'
STOCKHOLDERS’ EQUITY	'	'
Preferred stock—$0.0001 par value; 20,000 shares authorized, no shares issued or outstanding as of March 29, 2014 and December 28, 2013	0	'
Common stock—$0.0001 par value; 1,000,000 shares authorized, 31,875 shares and 31,152 shares issued and outstanding as of March 29, 2014 and December 28, 2013, respectively	3	3
Treasury stock—No par value; 8,110 shares authorized and outstanding as of March 29, 2014 and December 28, 2013	-12,469	-12,469
Additional paid-in capital	157,793	144,810
Accumulated other comprehensive income	15	23
Accumulated deficit	-17,147	-8,929
TOTAL STOCKHOLDERS’ EQUITY	128,195	123,438
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$197,467	$195,517

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 29, 2014	Dec. 28, 2013
In Thousands, except Share data, unless otherwise specified
Accounts receivable, allowance	$0	$0
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	31,874,708	31,152,000
Common stock, shares outstanding	31,874,708	31,152,000
Treasury stock, par value	$0	$0
Treasury stock, authorized	8,110,000	8,110,000
Treasury stock, outstanding	8,110,000	8,110,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Revenue:	'	'
Product	$20,080	$17,519
Services	11,680	8,294
Total revenue	31,760	25,813
Cost of revenue:	'	'
Product	7,005	4,724
Services	1,580	653
Total cost of revenue	8,585	5,377
Gross profit	23,175	20,436
Operating expenses:	'	'
Research and development	10,938	5,671
Sales and marketing	18,170	12,421
General and administrative	6,005	3,509
Total operating expenses	35,113	21,601
Loss from operations	-11,938	-1,165
Interest income	61	2
Other expense, net	-41	-7
Loss before income tax benefit (provision)	-11,918	-1,170
Income tax benefit (provision)	3,700	-29
Net loss	-8,218	-1,199
Accretion of preferred stock to redemption value and issuance costs	0	-585
Loss distributable to preferred stockholders	0	569
Net loss attributable to common stockholders	($8,218)	($1,215)
Net loss per share attributable to common stockholders:	'	'
Basic and Diluted	($0.26)	($0.07)
Weighted average shares used in computing net loss per share attributable to common stockholders:	'	'
Basic and Diluted	31,734	17,300

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Net loss	($8,218)	($1,199)
Other comprehensive loss:	'	'
Change in unrealized gain on available-for-sale investments, net of taxes	-8	'
Comprehensive loss	-8,226	-1,199
Accretion of preferred stock to redemption value and issuance costs	0	-585
Loss distributable to preferred stockholders	0	569
Comprehensive loss attributable to common stockholders	($8,226)	($1,215)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Cash flows from operating activities:	'	'
Net loss	($8,218)	($1,199)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'
Depreciation and amortization	983	549
Stock-based compensation expense	7,858	1,593
Deferred income taxes	-3,719	'
Inventory write-down	1,810	257
Changes in operating assets and liabilities:	'	'
Accounts receivable	8,206	6,746
Inventories	-247	1,206
Prepaid expenses and other assets	-783	-738
Accounts payable	47	-1,640
Accrued liabilities and other liabilities	-6,179	-908
Deferred revenue	2,042	4,387
Net cash provided by operating activities	1,800	10,253
Cash flows from investing activities:	'	'
Purchases of short-term investments	-34,430	'
Proceeds from sales of short-term investments	1,000	'
Proceeds from maturities of short-term investments	5,075	'
Purchases of property and equipment	-2,269	-949
Net cash used in investing activities	-30,624	-949
Cash flows from financing activities:	'	'
Proceeds from employee stock purchase plan	3,863	'
Proceeds from exercise of stock options	2,881	'
Costs paid for initial public offering and follow-on public offering	-8	-34
Shares repurchased for tax withholdings on vesting of restricted stock units and stock option exercises	-1,632	'
Distribution of income to Gigamon LLC members	-476	-4,821
Net cash provided by (used in) financing activities	4,628	-4,855
Net (decrease) increase in cash and cash equivalents	-24,196	4,449
Cash and cash equivalents at beginning of period	79,908	18,675
Cash and cash equivalents at end of period	55,712	23,124
Non-cash Investing and Financing Activities:	'	'
Unpaid property and equipment purchases	690	'
Accretion of preferred stock to redemption value and issuance costs discount	0	585
Unpaid deferred offering costs	'	$540

Description_of_the_Business

Description of the Business	3 Months Ended
	Mar. 29, 2014
Description of the Business	'
	1. Description of the Business
	Gigamon Inc. (the “Company”) designs, develops and sells products and services that together provide customers with visibility and control of network traffic. The Company serves global enterprises and services providers that seek to maintain and improve the reliability, performance and security of their network infrastructure.
	On May 31, 2013, the Company converted from a Delaware limited liability company into a Delaware corporation and changed the Company’s name from Gigamon LLC to Gigamon Inc. (the “LLC Conversion”).

Significant_Accounting_Policie

Significant Accounting Policies	3 Months Ended
	Mar. 29, 2014
Significant Accounting Policies	'
	2. Significant Accounting Policies
	Basis of Presentation
	The Company prepared its condensed consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2013.
	There have been no changes to the Company’s significant accounting policies described in the Annual Report on Form 10-K that have had a material impact on the Company’s condensed consolidated financial statements and related notes.
	The Company has a 52- or 53-week fiscal year that ends on the last Saturday in December. Fiscal 2014 is a 52-week fiscal year ending on December 27, 2014 and each quarter therein is a 13-week quarter.
	Unaudited Interim Financial Statements
	The accompanying condensed consolidated financial statements are unaudited. The unaudited interim consolidated financial statements have been prepared on a basis consistent with the annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include normal recurring adjustments, necessary to fairly state the Company’s financial position as of March 29, 2014, its results of operations, comprehensive loss and cash flows in the three months ended March 29, 2014 and March 30, 2013. The financial data and the other financial information disclosed in the accompanying notes to the condensed consolidated financial statements related to these three month periods are also unaudited. The fiscal year-end condensed balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The results of operations in the three months ended March 29, 2014 are not necessarily indicative of the results to be expected for the full fiscal year or any other future periods.
	Principles of Consolidation
	The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiary in the United Kingdom. All significant intercompany accounts and transactions have been eliminated in consolidation.
	Use of Estimates
	The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reported periods. On an ongoing basis, the Company evaluates its estimates, including but not limited to those related to revenue recognition, provision for doubtful accounts, warranty reserve, excess and obsolete inventory write-downs, stock-based compensation expense, depreciable lives, and income taxes. The Company bases its estimates on historical experience, projections for future performance and other assumptions that it believes to be reasonable under the circumstances. Actual results could differ materially from those estimates.
	Cash Equivalents and Marketable Securities
	All highly liquid marketable securities with original or remaining maturities of less than three months at the date of purchase are considered to be cash equivalents. Marketable securities are generally classified as available-for-sale for use in current operations, if required, and are reported at fair value, with unrealized gains and losses, net of tax, presented as a separate component of stockholders’ equity under accumulated other comprehensive income. All realized gains and losses and unrealized losses resulting from declines in fair value that are other-than-temporary are recorded in other expense, net in the period of occurrence. The Company uses the specific identification method to determine the realized gains and losses on investments. For all investments in marketable securities, the Company assesses whether the impairment is other-than-temporary. If the fair value of a security is less than its amortized cost basis, an impairment is considered other-than-temporary if (i) the Company has the intent to sell the security or it is more likely than not that the Company will be required to sell the security before recovery of its entire amortized cost basis, or (ii) the Company does not expect to recover the entire amortized cost of the security. If an impairment is considered other-than-temporary based on condition (i), the entire difference between the amortized cost and the fair value of the security is recognized in earnings. If an impairment is considered other-than-temporary based on condition (ii), the amount representing credit losses, defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis of the security, will be recognized in earnings, and the amount relating to all other factors will be recognized in other comprehensive income. The Company evaluates both qualitative and quantitative factors such as duration and severity of the unrealized losses, credit ratings, default and loss rates of the underlying collateral, structure and credit enhancements to determine if a credit loss may exist.
	Concentrations
	The Company operates in highly competitive and rapidly changing markets that could negatively impact the Company’s operating results. A number of components that meet the Company’s manufacturing requirements are available only from single source suppliers. In addition, the Company relies on one contract manufacturer to manufacture substantially all of its products. The inability of its single source suppliers and contract manufacturer to provide the Company with adequate supplies of high-quality components and products could cause a delay in order fulfillment, which could adversely affect the Company’s revenue, cost of sales and operating results.
	Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash, cash equivalents, short-term investments and accounts receivable. The majority of the Company’s cash, cash equivalents and short-term investments are held or managed by a limited number of major financial institutions in the United States that management believes are creditworthy. Such deposits may exceed the insured limits provided on them.
	The Company sells its products primarily through channel partners, including distributors and resellers, and occasionally directly to end-user customers. The Company generally requires no collateral from its customers. The Company mitigates credit risk associated with its accounts receivable by performing ongoing credit evaluations of its customers and establishes an allowance for doubtful accounts for estimated losses based on management’s assessment of the collectability of customer accounts.
	Customers that represented more than 10% of total revenue and accounts receivable are the following:
		Three Months Ended
		March 29,			March 30,
		2014			2013
	Percent of Total Revenue:
	Customer A (distributor)		45	%		57	%
	Customer B (distributor)		19	%		*
		As of
		March 29,			December 31,
		2014			2013
	Percent of Accounts Receivable:
	Customer A (distributor)		26	%		23	%
	Customer B (distributor)		29	%		11	%
	* Less than 10%
	In the three months ended March 29, 2014 and March 30, 2013, no end-user customer accounted for 10% or more of total revenue. As of March 29, 2014 and December 28, 2013, no end-user customer accounted for 10% or more of total accounts receivable.
	Inventories
	Inventory is valued at the lower of cost computed on a first-in, first-out basis, or market value. The Company writes down inventory in excess of forecasted demand over a certain period, as a component of cost of revenue. In these cases, inventory is reduced to estimated realizable value based on historical usage and expected demand. At the point of inventory write-down, a new lower-cost basis for that inventory is established and subsequent changes in facts and circumstances do not result in the restoration or increase in that newly established cost basis.
	Inherent in the Company’s estimates of market value in determining inventory valuation are estimates related to economic trends, future demand for the Company’s products, and technical obsolescence of products. The Company uses a contract manufacturer to provide manufacturing services for its products. During the normal course of business, in order to manage manufacturing lead times and help ensure adequate component supply, the Company enters into agreements with the contract manufacturer that either allow them to procure inventory based upon criteria as defined by the Company, or establish the parameters defining the Company’s requirements. A portion of the Company’s reported purchase commitments arising from these agreements consists of non-cancelable commitments. The Company records a liability for firm, non-cancelable and unconditional purchase commitments for quantities in excess of its future demand forecasts consistent with the valuation of the Company’s excess and obsolete inventory.
	In the three months ended March 29, 2014, the Company recognized a $1.8 million inventory write-down within cost of revenue and a $0.4 million benefit from the sale of previously written-down inventory. In the three months ended March 30, 2013, the Company recognized a $0.3 million inventory write-down and a $0.3 million benefit from the sale of previously written-down inventory.
	Revenue Recognition
	The Company generates product revenue from sales of traffic visibility solutions to channel partners and direct customers as well as services revenue from sales of maintenance and support contracts and other billable services. Most of the Company’s products are hardware appliances containing software components that function together to deliver the essential functionality of the solution. The Company typically delivers products and services in a single transaction. The deliverables consist of traffic visibility solutions, maintenance and support, and other billable services. The Company’s typical arrangement includes the sale of one or multiple products that include first year maintenance and support as well as standard warranty. Other arrangements consist of the sale of products bundled with additional maintenance and support or a renewal of maintenance and support contracts. Billable services are billed in advance or when service is provided and performed as requested by customers. Under maintenance and support contracts, services are provided as needed by customers over the fixed arrangement term. The Company does not grant its customers a general right of return or any refund terms, except to two of the Company’s distributors which have a general right of return and in that case, revenue is deferred until sell-through has occurred. Revenue is reported net of rebates, discounts and any other sales incentives.
	The Company recognizes revenue when (1) persuasive evidence of an arrangement exists, (2) delivery has occurred or services have been rendered, (3) sales price is fixed or determinable and (4) collectability is reasonably assured.
	When sales arrangements contain multiple elements and software and non-software components that function together to deliver the products’ essential functionality, the Company allocates revenue to each element based on a selling price hierarchy: vendor-specific objective evidence (“VSOE”) if available, third-party evidence (“TPE”) of the selling price if VSOE is not available, or best estimated selling prices (“BESP”) if neither VSOE nor TPE is available.
	When the Company enters in arrangements to provide more than one product or service (“multiple deliverables”), these arrangements are evaluated to determine if the multiple elements consist of more than one unit of accounting and can be separated accordingly. Based on separation criteria under the guidance, deliverables in multiple element arrangements can be segregated into separate units of accounting if they have value to the customer on a standalone basis. If deliverables can be separated into individual units of accounting, then the arrangement consideration is allocated among deliverables based on their relative selling price. Revenue from each deliverable is recognized when all requirements are met for that specific deliverable. If deliverables cannot be separated into separate units of accounting, then the arrangement will be accounted for as a single unit of accounting and revenue will be recognized when all requirements are met for all deliverables within the arrangement. The Company has established VSOE for maintenance and support contracts since the majority of selling prices fall within a narrow range when sold separately. TPE is not used since this information is not widely available in the market and the Company does not consider its products to be similar to or interchangeable with its competitors’ products in standalone sales to similarly situated customers. For deliverables with no established VSOE, the Company determines the standalone selling price for such deliverables by establishing BESP, which incorporates historical selling prices, the effect of market conditions, gross margin objectives and pricing practices, as well as entity specific factors. The Company monitors and evaluates BESP on a regular basis to ensure that changes in circumstances are accounted for in a timely manner.
	Services revenue is recognized ratably over the contractual support period, which is typically one year and can be up to five years.
	In accordance with contractual provisions, the Company may offer cooperative marketing funds based on a fixed dollar percentage of product sales to certain of its channel partners or to fund specific marketing activities for these partners. The Company records such amounts as a reduction to revenue or, if the Company has evidence of fair value of the separable and identifiable benefit received, as marketing expense.
	Revenue is recorded net of sales taxes. Costs of products not yet recognized as revenue are deferred and included as a component of prepaid expenses and other current assets in the condensed consolidated balance sheets. As of March 29, 2014 and December 28, 2013, deferred product costs were $1.4 million and $0.9 million, respectively.
	Shipping and handling costs are recorded in cost of revenue in the period products are shipped to customers.
	Warranty
	The Company provides five-year warranties on its products against defects in manufacturing. The Company accrues for potential liability claims as a component of cost of product revenue based on historical trends of product failure rates and the expected material and labor costs to provide warranty services. The accrued warranty balance is reviewed periodically for adequacy and is included in accrued liabilities and in other non-current liabilities on the condensed consolidated balance sheets.
	Stock-Based Compensation
	Stock-based compensation expense related to stock-based transactions, including employee and director awards, as well as employee stock purchase plan purchase rights (“ESPP purchase rights”), is measured and recognized in the condensed consolidated financial statements based on fair value of the award on the grant date. Stock-based compensation expense related to equity awards that can be settled in cash is measured based on the fair value on each balance sheet date until the settlement dates. The fair value of option awards and ESPP purchase rights is estimated using the Black-Scholes option-pricing model. This model requires assumptions including the market value of the Company’s common stock, expected volatility, expected term of the award, expected dividend yield and risk-free interest rate. Expected term for stock option awards is determined based on the mid-point of the vest period and the contractual period of each option award due to the Company’s limited historical stock option exercise data. Expected volatility is established based on the historical volatility of the common stock of a peer group of publicly traded companies. The stock-based compensation expense, net of estimated forfeitures, is recognized on a graded-vesting basis over the requisite service periods of the awards, unless a performance-based condition exists. Expense for performance-based awards are recognized when the issuance of the underlying awards are probable. Expense for consultant awards are measured based on the fair value on the vest date. Expenses related to the option grants to consultants that have not been vested as of the reporting date are marked to market until the earlier of the commitment or the completion of the underlying performance. The Company estimates a forfeiture rate to calculate the stock-based compensation for its awards based on an analysis of its historical experience, analysis of employee turnover and other related factors.
	Advertising Costs
	Expenses related to advertising of products are charged to sales and marketing expense as incurred. For all periods presented, advertising expenses were insignificant.
	Income Taxes
	The Company is subject to U.S. federal income taxes as well as state taxes. In addition, the Company is subject to taxes in the foreign jurisdictions where it operates.
	Prior to the LLC Conversion in May 2013, the Company was a Delaware limited liability company that passed through income and losses to its members. As a result, the Company was not subject to any U.S. federal or state income taxes as the related tax consequences were reported by the individual members.
	Effective upon the completion of the LLC Conversion, the Company accounts for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in its financial statements or tax returns. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carry forwards. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. Accordingly, the Company assessed the need for a valuation allowance based on the ASC 740 more-likely-than-not realization threshold criterion. Consideration was given to all positive and negative evidence related to the realization of the deferred tax assets. This assessment considered, among other matters, the nature, frequency and severity of current and cumulative losses, forecasts of future profitability, the duration of statutory carryforward periods, experience with operating loss and tax credit carryforwards expiring, and tax planning alternatives. Based on the Company’s evaluation, the weight of positive evidence currently supports the realization of the deferred tax assets on a more-likely-than-not basis. The Company will make this determination each quarter and if the results in the future do not support the realizability on a more-likely-than-not basis, a valuation allowance could be recorded in the near term. Significant judgment was required to determine whether a valuation allowance was necessary and the amount of such valuation allowance, if appropriate.
	The Company applies the authoritative accounting guidance prescribing a threshold and measurement attribute for the financial recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company recognizes liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more-likely-than-not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires the Company to estimate and measure the tax liability as the largest amount that is more-likely-than-not to be realized upon ultimate settlement. The Company also accounts for any related interest and penalty charges as a component of income taxes.
	Effective January 2014, the Company adopted, on a prospective basis, the new accounting standard update that requires the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than as liabilities in the condensed consolidated balance sheets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The adoption of this accounting guidance does not have a significant impact on the Company’s condensed consolidated financial statements as of March 29, 2014.
	Comprehensive Loss
	Comprehensive loss is defined as a change in equity of a business enterprise during a period, resulting from transactions from non-owner sources. Comprehensive loss comprises all components of net loss and all components of other comprehensive loss within stockholders’ equity. The Company’s other comprehensive loss includes unrealized gains and losses from its available-for-sale securities that are not considered other-than-temporarily impaired, net of taxes.
	Recent Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board issued an accounting standard update to specify that service concession arrangements (1) should not be accounted for as leases and (2) do not constitute property, plant and equipment for recognition purposes. The guidance is effective for fiscal years and interim periods beginning after December 15, 2014. The Company does not expect the adoption of this guidance to have a material impact on its condensed consolidated financial statements.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 29, 2014
Fair Value Measurements	'
	3. Fair Value Measurements
	The Company records its financial assets and liabilities at fair value. The inputs used in the valuation methodologies in measuring fair value are defined in the fair value hierarchy as follows:
	Level 1 – Quoted prices in active markets for identical assets or liabilities.
	Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in markets that are not active; 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 that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Cash, Cash Equivalents and Short-Term Investments
	The Company measures its financial instruments at fair value on a recurring basis. The components of the Company’s cash, cash equivalents and short-term investments are as follows (in thousands):
				Fair Value Measured Using
		As of		Quoted Prices		Significant			Significant
		March 29,		in Active		Other			Unobservable
		2014		Markets for		Observable			Inputs
				Identical		Inputs			(Level 3)
				Assets		(Level 2)
				(Level 1)
	Cash equivalents:
	Money market funds	$	54,170	$	54,170	$	—		$	—
	Total cash equivalents		54,170	$	54,170	$	—		$	—
	Cash		1,542
	Total cash and cash equivalents	$	55,712
	Short-term investments:
	Corporate debt securities	$	54,456	$	—	$	54,456		$	—
	U.S. agency debt securities		24,510		—		24,510			—
	U.S. government securities		7,994		—		7,994			—
	Total short-term investments	$	86,960	$	—	$	86,960		$	—
				Fair Value Measured Using
		As of		Quoted Prices		Significant			Significant
		December 28,		in Active		Other			Unobservable
		2013		Markets for		Observable			Inputs
				Identical		Inputs			(Level 3)
				Assets		(Level 2)
				(Level 1)
	Cash equivalents:
	Money market funds	$	79,100	$	79,100	$	—		$	—
	Corporate debt securities		501		—		501			—
	Total cash equivalents		79,601	$	79,100	$	501		$	—
	Cash		307
	Total cash and cash equivalents	$	79,908
	Short-term investments:
	Corporate debt securities	$	42,210	$	—	$	42,210		$	—
	U.S. agency debt securities		11,035		—		11,035			—
	U.S. government securities		4,997		—		4,997			—
	Total short-term investments	$	58,242	$	—	$	58,242		$	—
	The Company considers all highly liquid investments with an original maturity or remaining maturity of three months or less at the time of purchase to be cash equivalents. The Company holds money market funds that invest primarily in high-quality short-term money-market instruments, and these funds are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
	Money market funds have been classified as Level 1 because these securities are valued based upon quoted prices in active markets. The Company’s Level 2 assets are priced using quoted market prices for similar instruments or non-binding market prices that are corroborated by observable market data. The Company uses inputs such as actual trade data, benchmark yields, broker/dealer quotes or alternative pricing sources with reasonable levels of price transparency which are obtained from quoted market prices, independent pricing vendors, or other sources, to determine the ultimate fair value of these assets. The Company’s policy is to recognize transfers among Level 1, Level 2 and Level 3 classifications as of the actual date of the events or change in circumstances that caused the transfers. The Company did not have any transfers between Level 1 and Level 2 in the three months ended March 29, 2014 and March 30, 2013. As of March 29, 2014 and December 28, 2013, the Company had no liabilities measured at fair value.
	Financial instruments measured at amortized costs, gross unrealized gain, gross unrealized loss and fair value by significant investment categories are summarized as follows (in thousands):
		As of March 29, 2014
		Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	Cash and cash equivalents:
	Money market funds	$	54,170	$	—	$	—		$	54,170
	Cash		1,542		—		—			1,542
	Total cash and cash equivalents	$	55,712	$	—	$	0		$	55,712
	Short-term investments:
	Corporate debt securities	$	54,446	$	40	$	(30	)	$	54,456
	U.S. agency debt securities		24,517		3		(10	)		24,510
	U.S. government securities		7,983		11		—			7,994
	Total short-term investments	$	86,946	$	54	$	(40	)	$	86,960
	The Company’s realized gain was immaterial in the three months ended March 29, 2014. There were no securities in a continuous loss position for 12 months or longer as of March 29, 2014 and December 28, 2013.
	The contractual maturity dates of the Company’s cash, cash equivalents and short-term investments were summarized as follows (in thousands):
		As of
		March 29,		December 28,
		2014		2013
	Due within one year	$	99,538	$	100,674
	Due between one and five years		41,592		37,169
Total		141,130		137,843
Cash		1,542		307
Total	$	142,672	$	138,150

Balance_Sheet_Components

Balance Sheet Components	3 Months Ended
	Mar. 29, 2014
Balance Sheet Components	'
	4. Balance Sheet Components
	Inventories
	Inventories are comprised of the following (in thousands):
		As of
		March 29,				December 28,
		2014				2013
	Raw materials	$	170			$	59
	Finished goods		1,387				1,425
	Total inventories	$	1,557			$	1,484
	Accrued Liabilities
	The following table presents the components of accrued liabilities (in thousands):
		As of
		March 29,				December 28,
		2014				2013
	Accrued employee related costs	$	6,369			$	10,067
	Accrued inventory and other purchases		3,798				2,961
	Accrued professional services		1,248				1,028
	Accrued employee stock purchase plan contributions		1,049				3,558
	Accrued payroll and other taxes		948				1,908
	Accrued warranty, current		376				384
	Accrued cooperative marketing funds		306				303
	Income taxes payable		223				196
	Sales return reserve		126				191
	Other accruals		2,703				1,805
	Total accrued liabilities	$	17,146			$	22,401
	Accrued Warranty
	The following table presents the activity related to the current and non-current product warranty within accrued liabilities and other non-current liabilities (in thousands):
		Three Months Ended
		March 29,				March 30,
		2014				2013
	Balance at beginning of period	$	686			$	350
	Accrual for warranties issued during the period		187				116
	Adjustments to warranty accrued		(3	)			46
	Actual costs incurred		(192	)			(97	)
	Balance at end of period	$	678			$	415
		As Of
			March 29,				December 28,
			2014				2013
	Reported as:
	Current	$	376			$	384
	Non-current		302				302
	Total accrued warranty	$	678			$	686
	Accumulated Other Comprehensive Income
	Accumulated other comprehensive income consists of unrealized gains and losses from available-for-sale securities.
	The following summarizes the activity within accumulated other comprehensive income (in thousands):
			Accumulated Other Comprehensive Income
			Net Unrealized Gains				Income Tax Provision		Net Unrealized Gains, net of
									tax
	Balance as of December 28, 2013		$	23			$	—	$	23
	Change in net unrealized gains			(8	)			—		(8	)
	Net gains reclassified into other expense, net			—				—		—
	Other comprehensive loss			(8	)			—		(8	)
	Balance as of March 29, 2014		$	15			$	—	$	15

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 29, 2014
Related Party Transactions	'
	5. Related Party Transactions
	Gigamon LLC Members’ Distribution Payable
	Prior to the LLC Conversion on May 31, 2013, the Company allocated its adjusted net income (loss) to the holders of its outstanding equity (hereafter referred to as the members) pro rata based upon each member’s pro rata equity ownership, pursuant to the LLC Agreement and distributed a portion of the allocated earnings to its members, as approved by its Board of Directors (the “Board”).
	As of March 29, 2014 and December 28, 2013, the Gigamon LLC members’ distribution payable balance was zero and $0.5 million, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 29, 2014
Commitments and Contingencies	'
	6. Commitments and Contingencies
	Lease Commitments
	The Company leases office space for its existing headquarters, in Santa Clara, California, and its United Kingdom subsidiary under non-cancelable operating leases that expire at various times through March 2018. The Company has also entered into lease agreements for additional office space for sales offices in Australia, New York, Virginia, China, Japan, Hong Kong, Russia and Singapore. The Company’s lease on its former headquarters in Milpitas, California terminates at the end of June 2014. The Company recognizes rent expense on a straight–line basis over the lease period.
	Rent expense related to the Company’s operating leases was $0.8 million and $0.2 million for the three months ended March 29, 2014 and March 30, 2013, respectively.
	Future minimum lease payments under non-cancelable operating leases as of March 29, 2014 were as follows (in thousands):
	Fiscal Year:
	2014 (remaining nine months)	$	1,242
	2015		3,139
	2016		3,223
	2017		3,315
	2018		972
	Thereafter		43
		$	11,934
	Purchase Commitments
	As of March 29, 2014 and December 28, 2013, the Company’s purchase orders for inventories and related components totaled $6.4 million and $7.5 million, respectively.
	Legal Proceedings
	From time to time, the Company may become involved in legal proceedings arising in the ordinary course of business. The Company is not currently a party to any legal proceedings the outcome of which, if determined adversely to the Company, would individually or in the aggregate be expected to have a material adverse effect on its business, operating results, financial condition or cash flows.
	Indemnification Obligations
	Under the indemnification provisions of its standard sales related contracts, the Company agrees to defend its customers against third-party claims asserting infringement of certain intellectual property rights, which may include patents, copyrights, trademarks, or trade secrets, and to pay judgments entered on such claims. The Company’s exposure under these indemnification provisions is generally limited to the total amount paid by its customer under the agreement. However, certain agreements include indemnification provisions that could potentially expose the Company to losses in excess of the amount received under the agreement. The Company has not incurred any costs as a result of such indemnifications and has not accrued any liabilities related to such obligations in its condensed consolidated financial statements. In addition, the Company indemnifies its officers, directors, and certain key employees while they are serving in good faith in the company capacities. To date, there have been no claims under any indemnification provisions.

Preferred_Stock_and_Stockholde

Preferred Stock and Stockholders' Equity	3 Months Ended
	Mar. 29, 2014
Preferred Stock and Stockholders' Equity	'
	7. Preferred Stock and Stockholders’ Equity
	Effective May 31, 2013, all of the Company’s outstanding common units and preferred units were converted into shares of common stock and preferred stock. Further, in connection with the LLC Conversion, Gigamon Systems LLC, the holder of all of the Company’s outstanding common units prior to the LLC Conversion, exchanged all of the interests that it held in the Company for 16,851,635 shares of the common stock of Gigamon Inc.
	Initial Public Offering and Conversion of Preferred Stock
	On June 17, 2013, the Company completed its initial public offering (the “IPO”), in which 7,762,500 shares of its common stock were sold at a public offering price of $19.00 per share. The Company sold 5,512,500 shares of common stock, inclusive of 1,012,500 shares of common stock sold upon the exercise in full of the overallotment option by the underwriters. In addition, certain selling stockholders sold 2,250,000 shares of common stock at a public offering price of $19.00 per share. In connection with its IPO, all of the Company’s then-outstanding redeemable convertible preferred stock was converted into 8.1 million shares of common stock.
	Follow-On Public Offering
	On October 28, 2013, the Company completed its follow-on public offering, in which 5,100,000 shares of its common stock were sold at a public offering price of $38.50 per share. The Company sold 300,000 shares of common stock and the Company’s selling stockholders sold 4,800,000 shares of common stock, which included 293,718 shares of common stock issued upon the exercise of options by certain selling stockholders, with an aggregate exercise price of $1.3 million, at a public offering price of $38.50 per share.
	Common Stock
	The Company has authorized 1,000,000,000 shares of common stock, $0.0001 par value per share. Each holder of common stock is entitled to one vote for each share of common stock held. Cumulative voting for the election of directors is not provided in the Company’s amended and restated certificate of incorporation. The Company’s common stock is not entitled to preemptive rights, and is not subject to conversion, redemption or sinking fund provisions. Subject to preferences that may apply to any shares of preferred stock outstanding at the time, the holders of common stock are entitled to receive dividends out of funds legally available if the Board, in its discretion, determines to issue dividends and then only at the times and in the amounts that the Board may determine.
	As of March 29, 2014, the Company had 31,874,708 shares of common stock issued and outstanding.
	Preferred Stock
	The Company has authorized 20,000,000 shares of undesignated preferred stock, $0.0001 par value per share. As of March 29, 2014, the Company had no shares of preferred stock issued or outstanding.
	Employee Stock Purchase Plan
	In conjunction with the completion of its IPO in June 2013, the Company adopted the 2013 Employee Stock Purchase Plan (the “ESPP”). A maximum of 439,422 shares was initially authorized for future issuance and the number of authorized shares under the ESPP is subject to increase on an annual basis. In the three months ended March 29, 2014, the Board authorized an additional 439,422 shares of common stock for future issuance under the ESPP. Eligible employees can purchase shares of the Company’s common stock at a discount through payroll deductions of up to 15% of their eligible compensation, subject to plan limitations. Employees are able to purchase shares at 85% of the lower of the fair market value of the Company’s common stock (i) at the date of commencement of the offering period or (ii) at the last day of the purchase period. The ESPP provides for a 24-month offering period comprised of four purchase periods of approximately six months. The offering periods are scheduled to start on the first trading day on or after May 15 and November 15 of each year, except for the first offering period, which commenced on the first trading day upon the completion of the Company’s IPO, or June 12, 2013, and ends on August 17, 2015. In the three months ended March 29, 2014, 242,278 shares of common stock were issued under the ESPP at $16.15 per share.
	Equity Award Plans
	The Company maintains two stock-based compensation plans: the 2013 Equity Incentive Plan (the “2013 Equity Plan”) and the 2012 Unit Option Plan (the “2012 Plan”). The 2013 Equity Plan serves as the successor to the 2012 Plan and permits the grant of stock options, stock appreciation rights, restricted stock, restricted stock units (“RSUs”), performance units and performance shares to employees, directors and consultants of the Company. The 2013 Equity Plan is authorized to issue up to a maximum of 4,394,221 shares of common stock for future issuance, including 1,464,740 shares of common stock authorized by the Board in the three months ended March 29, 2014, plus up to an additional 4,967,172 shares upon termination of awards under the 2012 Plan. In addition, the 2013 Equity Plan is subject to increase annually on the first day of each of the Company’s following fiscal years, by an amount equal to the least of (i) 1,464,740 shares, (ii) 5% of the outstanding shares of common stock as of the last day of the immediately preceding fiscal year, or (iii) such other amount as determined by the Board. As of March 29, 2014, outstanding awards under the 2013 Equity Plan and the 2012 Plan covered 1,242,705 shares and 3,153,730 shares of the Company’s common stock, respectively.
	Stock Options
	Stock options granted to new hires, under the 2013 Equity Plan and formerly under the 2012 Plan (together, the “Option Plans”), are generally subject to a four-year vesting period whereby stock options become 25% vested on the first anniversary of the grant date and then ratably monthly thereafter through the end of the vesting period. Vested stock options may be exercised up to ten years from the vesting commencement date. Under the 2012 Plan, vested but unexercised stock options expire 30 days after termination of service with the Company. Under the 2013 Equity Plan, vested but unexercised stock options expire three months after termination of service with the Company.
	The following table summarizes the stock option activity related to shares of common stock under the Company’s Option Plans:
		Number of				Weighted-				Weighted-		Aggregate
		Stock				Average				Average		Intrinsic Value
		Options				Exercise				Remaining
		Outstanding				Price Per Award				Contractual
										Life (Years)
												(in thousands)
	Balance — December 28, 2013		3,378,303			$	9.77				8.78	$	62,725
	Stock options granted		242,621			$	30.44
	Stock options exercised		(408,724	)		$	7.08
	Stock options cancelled		(74,804	)		$	9.2
	Balance — March 29, 2014		3,137,396			$	11.74				8.58	$	56,502
	Vested and expected-to-vest — March 29, 2014		2,986,654			$	11.58				8.58	$	54,254
	Exercisable — March 29, 2014		808,890			$	7				8.48	$	18,332
	Aggregate intrinsic value represents the difference between the exercise price of the awards and the Company’s fair value per share of $29.66 and $28.29 as of March 29, 2014 and December 28, 2013, respectively, for the total number of underlying options. Weighted-average fair value per share for stock option awards vested in the three months ended March 29, 2014 and March 30, 2013 was $11.48 and $7.60, respectively. As of March 29, 2014 and December 28, 2013, there were 23,088 shares and 39,998 shares of common stock subject to stock options with performance-based vesting criteria.
	In the three months ended March 29, 2014, the Company modified certain stock option grants covering 10,666 shares of common stock to restrict these options to cash settlement upon future exercises, for which these stock options are marked-to-market as of each balance sheet until their settlement dates. Stock-based compensation recognized in connection with these modified stock options was immaterial in the three months ended March 29, 2014. As of March 29, 2014, unrecognized stock-based compensation expense related to these modified stock options was immaterial.
	Restricted Stock Units
	RSUs generally vest over a period of three to four years. RSU vesting periods generally commence on the grant date or on the first anniversary of the grant date. The vesting is subject to the employee’s continuing service with the Company over that period. Until vested, RSUs do not have the voting or dividend participation rights of the Company’s common stock and the shares of the Company’s common stock underlying the awards are not considered issued and outstanding. The cost of RSUs is determined using the fair value of the Company’s common stock on the date of the grant.
	The following table summarizes the RSU activity under the Company’s Option Plans:
		Number of				Weighted-				Weighted-		Aggregate
		RSUs				Average				Average		Intrinsic Value
		Outstanding				Grant Date				Remaining
						Fair Value Per Award				Contractual
										Life (Years)
												(in thousands)
	Balance — December 28, 2013		840,949			$	21				1.4	$	23,790
	RSUs granted		586,040			$	30.63
	RSUs released		(123,669	)		$	16.26
	RSUs cancelled		(44,281	)		$	21.68
	Balance — March 29, 2014		1,259,039			$	25.93				1.64	$	37,343
	Vested and expected-to-vest — March 29, 2014		1,157,454			$	25.81				1.59	$	34,330
	Aggregate intrinsic value for RSUs represents the Company’s fair market value per share of $29.66 and $28.29 as of March 29, 2014 and December 28, 2013, respectively, for the total number of underlying RSUs.
	Stock-based Compensation Expense
	The fair value of stock options and ESPP purchase rights is estimated on the date of grant using the Black-Scholes option-pricing model. The fair values of the option awards and ESPP purchase rights granted and the assumptions used in the Black-Scholes option pricing model are summarized as follows:
			Three Months Ended
			March 29,					March 30,
			2014					2013
	Stock option awards:
	Expected term (in years)			6.0-6.1					5.8-6.1
	Risk-free interest rate			1.8%-1.9	%				1	%
	Expected volatility			61.9	%				63.8	%
	Expected dividend rate			—	%				—	%
	Grant date fair value per award			$17.32-$32.06					$9.44-$9.61
	ESPP purchase rights:
	Expected term (in years)			0.5-2.0					—
	Risk-free interest rate			0.1%-0.3	%				—
Expected volatility			44.8%-52.7	%				—
Expected dividend rate			—	%				—	%
Grant date fair value per share			$8.23-$13.06					—
The following table presents the stock-based compensation expense recorded in the Company’s condensed consolidated statements of operations (in thousands):
		Three Months Ended
		March 29,				March 30,
		2014				2013
Cost of revenue		$	448			$	18
Research and development			2,599				309
Sales and marketing			2,773				429
General and administrative			2,038				837
Total stock-based compensation expense		$	7,858			$	1,593
As of March 29, 2014, unrecognized compensation expense related to stock options, RSUs and ESPP purchase rights, net of estimated forfeitures, of $11.5 million, $22.6 million and $4.2 million, respectively, will be amortized over a weighted-average remaining period of 1.3 years, 1.6 years and 1.1 years, respectively. There was no capitalized stock-based compensation expense for any period presented.

Defined_Contribution_Plans

Defined Contribution Plans	3 Months Ended
	Mar. 29, 2014
Defined Contribution Plans	'
	8. Defined Contribution Plans
	The Company’s contributions to the 401(k) defined contribution plan were $0.7 million and $0.5 million for the three months end March 29, 2014 and March 30, 2013, respectively.

Income_Tax

Income Tax	3 Months Ended
	Mar. 29, 2014
Income Tax	'
	9. Income Tax
	The Company recorded an income tax benefit of $3.7 million in the three months ended March 29, 2014. The effective tax rate of 31.0% in the three months ended March 29, 2014 primarily represents the impact of the year-to-date pre-tax net loss, adjusted for permanent differences and foreign income taxed at local statutory rates. In the three months ended March 30, 2013, the Company was a Delaware limited liability company, a pass-through entity for tax purposes, and was not subject to U.S. federal or state income taxes.
	The Company concluded that a valuation allowance was not necessary for the total deferred tax assets of $24.6 million as of March 29, 2014 as it is more likely than not that such deferred tax assets will be realized in the future based on the Company’s past profitability and expected future earnings.
	As of March 29, 2014, the Company had $0.4 million of unrecognized tax benefits, all of which, if recognized, would affect the effective tax rate.
	The Company files annual income tax returns in multiple taxing jurisdictions on a worldwide basis. A number of years may elapse before an uncertain tax position is audited and finally resolved. While it is often difficult to predict the final outcome or the timing of resolution of any particular uncertain tax position, the Company believes that its reserves for income taxes reflect the most likely outcome. The Company adjusts these reserves, as well as the related interest, in light of changing facts and circumstances. Settlement of any particular position could require the use of cash. As of March 29, 2014, changes to the Company's uncertain tax positions in the next 12 months that are reasonably possible are not expected to have a significant impact on the Company's financial position or results of operations.

Net_Loss_Income_per_Share

Net (Loss) Income per Share	3 Months Ended
	Mar. 29, 2014
Net (Loss) Income per Share	'
	10. Net Loss per Share
	Basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of common stock outstanding for the period.
	Diluted net loss per share attributable to common stockholders is computed by giving effect to all potential dilutive securities outstanding during the period, including stock options, RSUs and ESPP purchase rights. The computation of diluted net loss per share does not assume conversion or exercise of potentially dilutive securities that would have an anti-dilutive effect on earnings. The dilutive effect of outstanding awards is computed using the treasury stock method. Prior to the Company’s IPO in June 2013, the Company’s diluted net income (loss) per share calculation excluded stock options and RSUs with vesting contingent upon an IPO or a liquidity event as the IPO did not occur until June 2013. In periods when the Company incurred a net loss, potential dilutive securities outstanding were excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect was antidilutive.
	Effective June 17, 2013, all shares of then-outstanding redeemable convertible preferred stock were converted to common stock and are included in the weighted-average shares used to compute net loss per share starting from the conversion date. The Series A Conversion did not occur until June 2013, therefore, net loss per share in the three months ended March 30, 2013 was presented in conformity with the two-class method as the then-outstanding Series A was considered a participating security due to its rights of cumulative preferred return. Under the two-class method, net income (loss) is allocated between common stock and other participating securities based on their participating rights. Accordingly, loss allocated or distributed to redeemable convertible preferred stock and the related number of outstanding shares of redeemable convertible preferred stock have been excluded from the computation of basic and diluted net loss per share attributable to common stockholders for the three months ended March 30, 2013.
	The following table presents the computation of basic and diluted net loss per share attributable to common stockholders (in thousands, except per share data):
		Three Months Ended
		March 29,			March 30,
		2014			2013
	Numerator:
	Net loss attributable to common stockholders	$	(8,218	)	$	(1,215	)
	Denominator:
	Weighted average shares used for basic and diluted net loss per share computation		31,734			17,300
	Net loss per share attributable to common stockholders:
	Basic and diluted	$	(0.26	)	$	(0.07	)
	The following potentially dilutive securities were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented (in thousands):
		Three Months Ended
		March 29,			March 30,
		2014			2013
	Redeemable convertible Series A		—			8,110
	Equity awards to purchase common stock		4,399			3,070

Segment_Information

Segment Information	3 Months Ended
	Mar. 29, 2014
Segment Information	'
	11. Segment Information
	Operating segments are defined as components of an enterprise that engage in business activities for which discrete financial information is available and evaluated by the chief operating decision maker in deciding how to allocate resources and assessing performance. The Company’s chief operating decision maker is its chief executive officer. The chief executive officer reviews financial information presented on a consolidated basis, for purposes of allocating resources and evaluating financial performance. The Company has one business activity and there are no segment managers who are held accountable for operations, or plans for levels or components below the consolidated unit level. Accordingly, the Company operates as a single reportable segment.
	The Company’s revenues by geographic region, based on the location to where the product was shipped, are summarized as follows (in thousands):
			Three Months Ended
			March 29,			March 30,
			2014			2013
	United States		$	23,125		$	16,857
	Rest of Americas			2,910			2,208
	Europe, Middle East and Africa			3,753			3,397
	Asia Pacific			1,972			3,351
	Total		$	31,760		$	25,813
	The Company’s long-lived assets by geographic region are summarized as follows (in thousands):
		As of
		March 29,			December 28,
		2014			2013
	United States	$	5,807		$	4,203
	Other		197			186
	Total	$	6,004		$	4,389

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 29, 2014
Basis of Presentation	'
	Basis of Presentation
	The Company prepared its condensed consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2013.
	There have been no changes to the Company’s significant accounting policies described in the Annual Report on Form 10-K that have had a material impact on the Company’s condensed consolidated financial statements and related notes.
	The Company has a 52- or 53-week fiscal year that ends on the last Saturday in December. Fiscal 2014 is a 52-week fiscal year ending on December 27, 2014 and each quarter therein is a 13-week quarter.
Unaudited Interim Financial Statements	'
	Unaudited Interim Financial Statements
	The accompanying condensed consolidated financial statements are unaudited. The unaudited interim consolidated financial statements have been prepared on a basis consistent with the annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include normal recurring adjustments, necessary to fairly state the Company’s financial position as of March 29, 2014, its results of operations, comprehensive loss and cash flows in the three months ended March 29, 2014 and March 30, 2013. The financial data and the other financial information disclosed in the accompanying notes to the condensed consolidated financial statements related to these three month periods are also unaudited. The fiscal year-end condensed balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP. The results of operations in the three months ended March 29, 2014 are not necessarily indicative of the results to be expected for the full fiscal year or any other future periods.
Principles of Consolidation	'
	Principles of Consolidation
	The condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiary in the United Kingdom. All significant intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	'
	Use of Estimates
	The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reported periods. On an ongoing basis, the Company evaluates its estimates, including but not limited to those related to revenue recognition, provision for doubtful accounts, warranty reserve, excess and obsolete inventory write-downs, stock-based compensation expense, depreciable lives, and income taxes. The Company bases its estimates on historical experience, projections for future performance and other assumptions that it believes to be reasonable under the circumstances. Actual results could differ materially from those estimates.
Cash Equivalents and Marketable Securities	'
	Cash Equivalents and Marketable Securities
	All highly liquid marketable securities with original or remaining maturities of less than three months at the date of purchase are considered to be cash equivalents. Marketable securities are generally classified as available-for-sale for use in current operations, if required, and are reported at fair value, with unrealized gains and losses, net of tax, presented as a separate component of stockholders’ equity under accumulated other comprehensive income. All realized gains and losses and unrealized losses resulting from declines in fair value that are other-than-temporary are recorded in other expense, net in the period of occurrence. The Company uses the specific identification method to determine the realized gains and losses on investments. For all investments in marketable securities, the Company assesses whether the impairment is other-than-temporary. If the fair value of a security is less than its amortized cost basis, an impairment is considered other-than-temporary if (i) the Company has the intent to sell the security or it is more likely than not that the Company will be required to sell the security before recovery of its entire amortized cost basis, or (ii) the Company does not expect to recover the entire amortized cost of the security. If an impairment is considered other-than-temporary based on condition (i), the entire difference between the amortized cost and the fair value of the security is recognized in earnings. If an impairment is considered other-than-temporary based on condition (ii), the amount representing credit losses, defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis of the security, will be recognized in earnings, and the amount relating to all other factors will be recognized in other comprehensive income. The Company evaluates both qualitative and quantitative factors such as duration and severity of the unrealized losses, credit ratings, default and loss rates of the underlying collateral, structure and credit enhancements to determine if a credit loss may exist.
Concentrations	'
	Concentrations
	The Company operates in highly competitive and rapidly changing markets that could negatively impact the Company’s operating results. A number of components that meet the Company’s manufacturing requirements are available only from single source suppliers. In addition, the Company relies on one contract manufacturer to manufacture substantially all of its products. The inability of its single source suppliers and contract manufacturer to provide the Company with adequate supplies of high-quality components and products could cause a delay in order fulfillment, which could adversely affect the Company’s revenue, cost of sales and operating results.
	Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash, cash equivalents, short-term investments and accounts receivable. The majority of the Company’s cash, cash equivalents and short-term investments are held or managed by a limited number of major financial institutions in the United States that management believes are creditworthy. Such deposits may exceed the insured limits provided on them.
	The Company sells its products primarily through channel partners, including distributors and resellers, and occasionally directly to end-user customers. The Company generally requires no collateral from its customers. The Company mitigates credit risk associated with its accounts receivable by performing ongoing credit evaluations of its customers and establishes an allowance for doubtful accounts for estimated losses based on management’s assessment of the collectability of customer accounts.
	Customers that represented more than 10% of total revenue and accounts receivable are the following:
		Three Months Ended
		March 29,			March 30,
		2014			2013
	Percent of Total Revenue:
	Customer A (distributor)		45	%		57	%
	Customer B (distributor)		19	%		*
		As of
		March 29,			December 31,
		2014			2013
	Percent of Accounts Receivable:
	Customer A (distributor)		26	%		23	%
	Customer B (distributor)		29	%		11	%
	* Less than 10%
	In the three months ended March 29, 2014 and March 30, 2013, no end-user customer accounted for 10% or more of total revenue. As of March 29, 2014 and December 28, 2013, no end-user customer accounted for 10% or more of total accounts receivable.
Inventories	'
	Inventories
	Inventory is valued at the lower of cost computed on a first-in, first-out basis, or market value. The Company writes down inventory in excess of forecasted demand over a certain period, as a component of cost of revenue. In these cases, inventory is reduced to estimated realizable value based on historical usage and expected demand. At the point of inventory write-down, a new lower-cost basis for that inventory is established and subsequent changes in facts and circumstances do not result in the restoration or increase in that newly established cost basis.
	Inherent in the Company’s estimates of market value in determining inventory valuation are estimates related to economic trends, future demand for the Company’s products, and technical obsolescence of products. The Company uses a contract manufacturer to provide manufacturing services for its products. During the normal course of business, in order to manage manufacturing lead times and help ensure adequate component supply, the Company enters into agreements with the contract manufacturer that either allow them to procure inventory based upon criteria as defined by the Company, or establish the parameters defining the Company’s requirements. A portion of the Company’s reported purchase commitments arising from these agreements consists of non-cancelable commitments. The Company records a liability for firm, non-cancelable and unconditional purchase commitments for quantities in excess of its future demand forecasts consistent with the valuation of the Company’s excess and obsolete inventory.
	In the three months ended March 29, 2014, the Company recognized a $1.8 million inventory write-down within cost of revenue and a $0.4 million benefit from the sale of previously written-down inventory. In the three months ended March 30, 2013, the Company recognized a $0.3 million inventory write-down and a $0.3 million benefit from the sale of previously written-down inventory.
Revenue Recognition	'
	Revenue Recognition
	The Company generates product revenue from sales of traffic visibility solutions to channel partners and direct customers as well as services revenue from sales of maintenance and support contracts and other billable services. Most of the Company’s products are hardware appliances containing software components that function together to deliver the essential functionality of the solution. The Company typically delivers products and services in a single transaction. The deliverables consist of traffic visibility solutions, maintenance and support, and other billable services. The Company’s typical arrangement includes the sale of one or multiple products that include first year maintenance and support as well as standard warranty. Other arrangements consist of the sale of products bundled with additional maintenance and support or a renewal of maintenance and support contracts. Billable services are billed in advance or when service is provided and performed as requested by customers. Under maintenance and support contracts, services are provided as needed by customers over the fixed arrangement term. The Company does not grant its customers a general right of return or any refund terms, except to two of the Company’s distributors which have a general right of return and in that case, revenue is deferred until sell-through has occurred. Revenue is reported net of rebates, discounts and any other sales incentives.
	The Company recognizes revenue when (1) persuasive evidence of an arrangement exists, (2) delivery has occurred or services have been rendered, (3) sales price is fixed or determinable and (4) collectability is reasonably assured.
	When sales arrangements contain multiple elements and software and non-software components that function together to deliver the products’ essential functionality, the Company allocates revenue to each element based on a selling price hierarchy: vendor-specific objective evidence (“VSOE”) if available, third-party evidence (“TPE”) of the selling price if VSOE is not available, or best estimated selling prices (“BESP”) if neither VSOE nor TPE is available.
	When the Company enters in arrangements to provide more than one product or service (“multiple deliverables”), these arrangements are evaluated to determine if the multiple elements consist of more than one unit of accounting and can be separated accordingly. Based on separation criteria under the guidance, deliverables in multiple element arrangements can be segregated into separate units of accounting if they have value to the customer on a standalone basis. If deliverables can be separated into individual units of accounting, then the arrangement consideration is allocated among deliverables based on their relative selling price. Revenue from each deliverable is recognized when all requirements are met for that specific deliverable. If deliverables cannot be separated into separate units of accounting, then the arrangement will be accounted for as a single unit of accounting and revenue will be recognized when all requirements are met for all deliverables within the arrangement. The Company has established VSOE for maintenance and support contracts since the majority of selling prices fall within a narrow range when sold separately. TPE is not used since this information is not widely available in the market and the Company does not consider its products to be similar to or interchangeable with its competitors’ products in standalone sales to similarly situated customers. For deliverables with no established VSOE, the Company determines the standalone selling price for such deliverables by establishing BESP, which incorporates historical selling prices, the effect of market conditions, gross margin objectives and pricing practices, as well as entity specific factors. The Company monitors and evaluates BESP on a regular basis to ensure that changes in circumstances are accounted for in a timely manner.
	Services revenue is recognized ratably over the contractual support period, which is typically one year and can be up to five years.
	In accordance with contractual provisions, the Company may offer cooperative marketing funds based on a fixed dollar percentage of product sales to certain of its channel partners or to fund specific marketing activities for these partners. The Company records such amounts as a reduction to revenue or, if the Company has evidence of fair value of the separable and identifiable benefit received, as marketing expense.
	Revenue is recorded net of sales taxes. Costs of products not yet recognized as revenue are deferred and included as a component of prepaid expenses and other current assets in the condensed consolidated balance sheets. As of March 29, 2014 and December 28, 2013, deferred product costs were $1.4 million and $0.9 million, respectively.
	Shipping and handling costs are recorded in cost of revenue in the period products are shipped to customers.
Warranty	'
	Warranty
	The Company provides five-year warranties on its products against defects in manufacturing. The Company accrues for potential liability claims as a component of cost of product revenue based on historical trends of product failure rates and the expected material and labor costs to provide warranty services. The accrued warranty balance is reviewed periodically for adequacy and is included in accrued liabilities and in other non-current liabilities on the condensed consolidated balance sheets.
Stock-Based Compensation	'
	Stock-Based Compensation
	Stock-based compensation expense related to stock-based transactions, including employee and director awards, as well as employee stock purchase plan purchase rights (“ESPP purchase rights”), is measured and recognized in the condensed consolidated financial statements based on fair value of the award on the grant date. Stock-based compensation expense related to equity awards that can be settled in cash is measured based on the fair value on each balance sheet date until the settlement dates. The fair value of option awards and ESPP purchase rights is estimated using the Black-Scholes option-pricing model. This model requires assumptions including the market value of the Company’s common stock, expected volatility, expected term of the award, expected dividend yield and risk-free interest rate. Expected term for stock option awards is determined based on the mid-point of the vest period and the contractual period of each option award due to the Company’s limited historical stock option exercise data. Expected volatility is established based on the historical volatility of the common stock of a peer group of publicly traded companies. The stock-based compensation expense, net of estimated forfeitures, is recognized on a graded-vesting basis over the requisite service periods of the awards, unless a performance-based condition exists. Expense for performance-based awards are recognized when the issuance of the underlying awards are probable. Expense for consultant awards are measured based on the fair value on the vest date. Expenses related to the option grants to consultants that have not been vested as of the reporting date are marked to market until the earlier of the commitment or the completion of the underlying performance. The Company estimates a forfeiture rate to calculate the stock-based compensation for its awards based on an analysis of its historical experience, analysis of employee turnover and other related factors.
Advertising Costs	'
	Advertising Costs
	Expenses related to advertising of products are charged to sales and marketing expense as incurred. For all periods presented, advertising expenses were insignificant.
Income Taxes	'
	Income Taxes
	The Company is subject to U.S. federal income taxes as well as state taxes. In addition, the Company is subject to taxes in the foreign jurisdictions where it operates.
	Prior to the LLC Conversion in May 2013, the Company was a Delaware limited liability company that passed through income and losses to its members. As a result, the Company was not subject to any U.S. federal or state income taxes as the related tax consequences were reported by the individual members.
	Effective upon the completion of the LLC Conversion, the Company accounts for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in its financial statements or tax returns. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carry forwards. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. Accordingly, the Company assessed the need for a valuation allowance based on the ASC 740 more-likely-than-not realization threshold criterion. Consideration was given to all positive and negative evidence related to the realization of the deferred tax assets. This assessment considered, among other matters, the nature, frequency and severity of current and cumulative losses, forecasts of future profitability, the duration of statutory carryforward periods, experience with operating loss and tax credit carryforwards expiring, and tax planning alternatives. Based on the Company’s evaluation, the weight of positive evidence currently supports the realization of the deferred tax assets on a more-likely-than-not basis. The Company will make this determination each quarter and if the results in the future do not support the realizability on a more-likely-than-not basis, a valuation allowance could be recorded in the near term. Significant judgment was required to determine whether a valuation allowance was necessary and the amount of such valuation allowance, if appropriate.
	The Company applies the authoritative accounting guidance prescribing a threshold and measurement attribute for the financial recognition and measurement of a tax position taken or expected to be taken in a tax return. The Company recognizes liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more-likely-than-not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires the Company to estimate and measure the tax liability as the largest amount that is more-likely-than-not to be realized upon ultimate settlement. The Company also accounts for any related interest and penalty charges as a component of income taxes.
	Effective January 2014, the Company adopted, on a prospective basis, the new accounting standard update that requires the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than as liabilities in the condensed consolidated balance sheets when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The adoption of this accounting guidance does not have a significant impact on the Company’s condensed consolidated financial statements as of March 29, 2014.
Comprehensive (Loss) Income	'
	Comprehensive Loss
	Comprehensive loss is defined as a change in equity of a business enterprise during a period, resulting from transactions from non-owner sources. Comprehensive loss comprises all components of net loss and all components of other comprehensive loss within stockholders’ equity. The Company’s other comprehensive loss includes unrealized gains and losses from its available-for-sale securities that are not considered other-than-temporarily impaired, net of taxes.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In January 2014, the Financial Accounting Standards Board issued an accounting standard update to specify that service concession arrangements (1) should not be accounted for as leases and (2) do not constitute property, plant and equipment for recognition purposes. The guidance is effective for fiscal years and interim periods beginning after December 15, 2014. The Company does not expect the adoption of this guidance to have a material impact on its condensed consolidated financial statements.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 29, 2014
Customers Representing Major Revenue and Accounts Receivable	'
	Customers that represented more than 10% of total revenue and accounts receivable are the following:
		Three Months Ended
		March 29,			March 30,
		2014			2013
	Percent of Total Revenue:
	Customer A (distributor)		45	%		57	%
	Customer B (distributor)		19	%		*
		As of
		March 29,			December 31,
		2014			2013
	Percent of Accounts Receivable:
	Customer A (distributor)		26	%		23	%
	Customer B (distributor)		29	%		11	%
	* Less than 10%

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 29, 2014
Components of Cash and Cash Equivalents	'
	The Company measures its financial instruments at fair value on a recurring basis. The components of the Company’s cash, cash equivalents and short-term investments are as follows (in thousands):
				Fair Value Measured Using
		As of		Quoted Prices		Significant			Significant
		March 29,		in Active		Other			Unobservable
		2014		Markets for		Observable			Inputs
				Identical		Inputs			(Level 3)
				Assets		(Level 2)
				(Level 1)
	Cash equivalents:
	Money market funds	$	54,170	$	54,170	$	—		$	—
	Total cash equivalents		54,170	$	54,170	$	—		$	—
	Cash		1,542
	Total cash and cash equivalents	$	55,712
	Short-term investments:
	Corporate debt securities	$	54,456	$	—	$	54,456		$	—
	U.S. agency debt securities		24,510		—		24,510			—
	U.S. government securities		7,994		—		7,994			—
	Total short-term investments	$	86,960	$	—	$	86,960		$	—
				Fair Value Measured Using
		As of		Quoted Prices		Significant			Significant
		December 28,		in Active		Other			Unobservable
		2013		Markets for		Observable			Inputs
				Identical		Inputs			(Level 3)
				Assets		(Level 2)
				(Level 1)
	Cash equivalents:
	Money market funds	$	79,100	$	79,100	$	—		$	—
	Corporate debt securities		501		—		501			—
	Total cash equivalents		79,601	$	79,100	$	501		$	—
	Cash		307
	Total cash and cash equivalents	$	79,908
	Short-term investments:
	Corporate debt securities	$	42,210	$	—	$	42,210		$	—
	U.S. agency debt securities		11,035		—		11,035			—
	U.S. government securities		4,997		—		4,997			—
	Total short-term investments	$	58,242	$	—	$	58,242		$	—
Schedule of Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Investments	'
	Financial instruments measured at amortized costs, gross unrealized gain, gross unrealized loss and fair value by significant investment categories are summarized as follows (in thousands):
		As of March 29, 2014
		Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	Cash and cash equivalents:
	Money market funds	$	54,170	$	—	$	—		$	54,170
	Cash		1,542		—		—			1,542
	Total cash and cash equivalents	$	55,712	$	—	$	0		$	55,712
	Short-term investments:
	Corporate debt securities	$	54,446	$	40	$	(30	)	$	54,456
	U.S. agency debt securities		24,517		3		(10	)		24,510
	U.S. government securities		7,983		11		—			7,994
	Total short-term investments	$	86,946	$	54	$	(40	)	$	86,960
Schedule of Contractual Maturity Date of Marketable Securities	'
	The contractual maturity dates of the Company’s cash, cash equivalents and short-term investments were summarized as follows (in thousands):
		As of
		March 29,		December 28,
		2014		2013
	Due within one year	$	99,538	$	100,674
	Due between one and five years		41,592		37,169
	Total		141,130		137,843
	Cash		1,542		307
	Total	$	142,672	$	138,150

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	3 Months Ended
	Mar. 29, 2014
Inventories	'
	Inventories are comprised of the following (in thousands):
		As of
		March 29,				December 28,
		2014				2013
	Raw materials	$	170			$	59
	Finished goods		1,387				1,425
	Total inventories	$	1,557			$	1,484
Accrued Liabilities	'
	The following table presents the components of accrued liabilities (in thousands):
		As of
		March 29,				December 28,
		2014				2013
	Accrued employee related costs	$	6,369			$	10,067
	Accrued inventory and other purchases		3,798				2,961
	Accrued professional services		1,248				1,028
	Accrued employee stock purchase plan contributions		1,049				3,558
	Accrued payroll and other taxes		948				1,908
	Accrued warranty, current		376				384
	Accrued cooperative marketing funds		306				303
	Income taxes payable		223				196
	Sales return reserve		126				191
	Other accruals		2,703				1,805
	Total accrued liabilities	$	17,146			$	22,401
Accrued Warranty Liability	'
	The following table presents the activity related to the current and non-current product warranty within accrued liabilities and other non-current liabilities (in thousands):
		Three Months Ended
		March 29,				March 30,
		2014				2013
	Balance at beginning of period	$	686			$	350
	Accrual for warranties issued during the period		187				116
	Adjustments to warranty accrued		(3	)			46
	Actual costs incurred		(192	)			(97	)
	Balance at end of period	$	678			$	415
		As Of
			March 29,				December 28,
			2014				2013
	Reported as:
	Current	$	376			$	384
	Non-current		302				302
	Total accrued warranty	$	678			$	686
Accumulated Other Comprehensive Income	'
	The following summarizes the activity within accumulated other comprehensive income (in thousands):
			Accumulated Other Comprehensive Income
			Net Unrealized Gains				Income Tax Provision		Net Unrealized Gains, net of
									tax
	Balance as of December 28, 2013		$	23			$	—	$	23
	Change in net unrealized gains			(8	)			—		(8	)
	Net gains reclassified into other expense, net			—				—		—
	Other comprehensive loss			(8	)			—		(8	)
	Balance as of March 29, 2014		$	15			$	—	$	15

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 29, 2014
Future Minimum Lease Payments under Non-Cancelable Operating Leases	'
	Future minimum lease payments under non-cancelable operating leases as of March 29, 2014 were as follows (in thousands):
	Fiscal Year:
	2014 (remaining nine months)	$	1,242
	2015		3,139
	2016		3,223
	2017		3,315
	2018		972
	Thereafter		43
		$	11,934

Preferred_Stock_and_Stockholde1

Preferred Stock and Stockholders' Equity (Tables)	3 Months Ended
	Mar. 29, 2014
Stock Option Activity	'
	The following table summarizes the stock option activity related to shares of common stock under the Company’s Option Plans:
		Number of				Weighted-				Weighted-		Aggregate
		Stock				Average				Average		Intrinsic Value
		Options				Exercise				Remaining
		Outstanding				Price Per Award				Contractual
										Life (Years)
												(in thousands)
	Balance — December 28, 2013		3,378,303			$	9.77				8.78	$	62,725
	Stock options granted		242,621			$	30.44
	Stock options exercised		(408,724	)		$	7.08
	Stock options cancelled		(74,804	)		$	9.2
	Balance — March 29, 2014		3,137,396			$	11.74				8.58	$	56,502
	Vested and expected-to-vest — March 29, 2014		2,986,654			$	11.58				8.58	$	54,254
	Exercisable — March 29, 2014		808,890			$	7				8.48	$	18,332
Restricted Stock Units Activity	'
	The following table summarizes the RSU activity under the Company’s Option Plans:
		Number of				Weighted-				Weighted-		Aggregate
		RSUs				Average				Average		Intrinsic Value
		Outstanding				Grant Date				Remaining
						Fair Value Per Award				Contractual
										Life (Years)
												(in thousands)
	Balance — December 28, 2013		840,949			$	21				1.4	$	23,790
	RSUs granted		586,040			$	30.63
	RSUs released		(123,669	)		$	16.26
	RSUs cancelled		(44,281	)		$	21.68
	Balance — March 29, 2014		1,259,039			$	25.93				1.64	$	37,343
	Vested and expected-to-vest — March 29, 2014		1,157,454			$	25.81				1.59	$	34,330
Assumptions used to Estimate Fair Value	'
	The fair value of stock options and ESPP purchase rights is estimated on the date of grant using the Black-Scholes option-pricing model. The fair values of the option awards and ESPP purchase rights granted and the assumptions used in the Black-Scholes option pricing model are summarized as follows:
			Three Months Ended
			March 29,					March 30,
			2014					2013
	Stock option awards:
	Expected term (in years)			6.0-6.1					5.8-6.1
	Risk-free interest rate			1.8%-1.9	%				1	%
	Expected volatility			61.9	%				63.8	%
	Expected dividend rate			—	%				—	%
	Grant date fair value per award			$17.32-$32.06					$9.44-$9.61
	ESPP purchase rights:
	Expected term (in years)			0.5-2.0					—
	Risk-free interest rate			0.1%-0.3	%				—
	Expected volatility			44.8%-52.7	%				—
	Expected dividend rate			—	%				—	%
	Grant date fair value per share			$8.23-$13.06					—
Share-Based Compensation Expense	'
	The following table presents the stock-based compensation expense recorded in the Company’s condensed consolidated statements of operations (in thousands):
			Three Months Ended
			March 29,				March 30,
			2014				2013
	Cost of revenue		$	448			$	18
	Research and development			2,599				309
	Sales and marketing			2,773				429
	General and administrative			2,038				837
	Total stock-based compensation expense		$	7,858			$	1,593

Net_Loss_Income_per_Share_Tabl

Net (Loss) Income per Share (Tables)	3 Months Ended
	Mar. 29, 2014
Net Income (Loss) per Share and Weighted-Average Shares	'
	The following table presents the computation of basic and diluted net loss per share attributable to common stockholders (in thousands, except per share data):
		Three Months Ended
		March 29,			March 30,
		2014			2013
	Numerator:
	Net loss attributable to common stockholders	$	(8,218	)	$	(1,215	)
	Denominator:
	Weighted average shares used for basic and diluted net loss per share computation		31,734			17,300
	Net loss per share attributable to common stockholders:
	Basic and diluted	$	(0.26	)	$	(0.07	)
Potentially Dilutive Securities Excluded from Computation of Diluted Net (loss) Income per Common Share	'
	The following potentially dilutive securities were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented (in thousands):
		Three Months Ended
		March 29,			March 30,
		2014			2013
	Redeemable convertible Series A		—			8,110
	Equity awards to purchase common stock		4,399			3,070

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 29, 2014
Revenues and Long-Lived Assets by Geographic Region	'
	The Company’s revenues by geographic region, based on the location to where the product was shipped, are summarized as follows (in thousands):
			Three Months Ended
			March 29,			March 30,
			2014			2013
	United States		$	23,125		$	16,857
	Rest of Americas			2,910			2,208
	Europe, Middle East and Africa			3,753			3,397
	Asia Pacific			1,972			3,351
	Total		$	31,760		$	25,813
	The Company’s long-lived assets by geographic region are summarized as follows (in thousands):
		As of
		March 29,			December 28,
		2014			2013
	United States	$	5,807		$	4,203
	Other		197			186
	Total	$	6,004		$	4,389

Customers_Representing_Major_R

Customers Representing Major Revenue and Accounts Receivable (Detail)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Total Revenue | Customer A (distributor)	'	'
Concentration Risk [Line Items]	'	'
Concentration risk	45.00%	57.00%
Total Revenue | Customer B (distributor)	'	'
Concentration Risk [Line Items]	'	'
Concentration risk	19.00%	'	[1]
Accounts Receivable | Customer A (distributor)	'	'
Concentration Risk [Line Items]	'	'
Concentration risk	26.00%	23.00%
Accounts Receivable | Customer B (distributor)	'	'
Concentration Risk [Line Items]	'	'
Concentration risk	29.00%	11.00%
[1]	Less than 10%

Significant_Accounting_Policie3

Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Schedule Of Significant Accounting Policies [Line Items]	'	'	'
Inventory write-down	$1,810,000	$257,000	'
Recovery of Inventories	400,000	300,000	'
Deferred product costs	$1,400,000	'	$900,000
Product warranties period (in years)	'5 years	'	'
Minimum	'	'	'
Schedule Of Significant Accounting Policies [Line Items]	'	'	'
Services revenue, recognition period (in years)	'1 year	'	'
Maximum	'	'	'
Schedule Of Significant Accounting Policies [Line Items]	'	'	'
Services revenue, recognition period (in years)	'5 years	'	'

Components_of_Cash_and_Cash_Eq

Components of Cash and Cash Equivalents (Detail) (USD $)	Mar. 29, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Cash and cash equivalents:	'	'
Cash and cash equivalents	$55,712	$79,908
Short-term investments:	'	'
Short-term investments	86,960	58,242
Corporate Debt Securities	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	'	501
Short-term investments:	'	'
Short-term investments	54,456	42,210
US Government Agencies Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	24,510	11,035
US Government Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	7,994	4,997
Significant Other Observable Inputs (Level 2)	'	'
Short-term investments:	'	'
Short-term investments	86,960	58,242
Significant Other Observable Inputs (Level 2) | Corporate Debt Securities	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	'	501
Short-term investments:	'	'
Short-term investments	54,456	42,210
Significant Other Observable Inputs (Level 2) | US Government Agencies Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	24,510	11,035
Significant Other Observable Inputs (Level 2) | US Government Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	7,994	4,997
Money Market Funds	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	54,170	79,100
Money Market Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	54,170	79,100
Cash Equivalents	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	54,170	79,601
Cash Equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1)	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	54,170	79,100
Cash Equivalents | Significant Other Observable Inputs (Level 2)	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	'	501
Cash	'	'
Cash and cash equivalents:	'	'
Cash and cash equivalents	$1,542	$307

Financial_Instruments_Measured

Financial Instruments Measured at Amortized Costs, Gross Unrealized Gain, Gross Unrealized Loss and Fair Value by Significant Investment Categories (Detail) (USD $)	Mar. 29, 2014
In Thousands, unless otherwise specified
Cash and cash equivalents	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'
Amortized Costs	$55,712
Gross Unrealized Losses	0
Fair Value	55,712
Cash and cash equivalents | Money Market Funds	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'
Amortized Costs	54,170
Fair Value	54,170
Cash and cash equivalents | Cash	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'
Amortized Costs	1,542
Fair Value	1,542
Short-term investments	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'
Amortized Costs	86,946
Gross Unrealized Gains	54
Gross Unrealized Losses	-40
Fair Value	86,960
Short-term investments | Corporate Debt Securities	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'
Amortized Costs	54,446
Gross Unrealized Gains	40
Gross Unrealized Losses	-30
Fair Value	54,456
Short-term investments | US Government Agencies Debt Securities	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'
Amortized Costs	24,517
Gross Unrealized Gains	3
Gross Unrealized Losses	-10
Fair Value	24,510
Short-term investments | US Treasury and Government Short-term Debt Securities	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'
Amortized Costs	7,983
Gross Unrealized Gains	11
Fair Value	$7,994

Contractual_Maturity_Date_of_S

Contractual Maturity Date of Short-Term Investments (Detail) (USD $)	Mar. 29, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Contractual Maturity Date of Short-Term Investments [Abstract]	'	'
Due within one year	$99,538	$100,674
Due between one and five years	41,592	37,169
Total	141,130	137,843
Cash	1,542	307
Total	$142,672	$138,150

Inventories_Detail

Inventories (Detail) (USD $)	Mar. 29, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Inventory [Line Items]	'	'
Raw materials	$170	$59
Finished goods	1,387	1,425
Total inventories	$1,557	$1,484

Accrued_Liabilities_Detail

Accrued Liabilities (Detail) (USD $)	Mar. 29, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Accrued Liabilities [Line Items]	'	'
Accrued employee related costs	$6,369	$10,067
Accrued inventory and other purchases	3,798	2,961
Accrued professional services	1,248	1,028
Accrued employee stock purchase plan contributions	1,049	3,558
Accrued payroll and other taxes	948	1,908
Accrued warranty, current	376	384
Accrued cooperative marketing funds	306	303
Income taxes payable	223	196
Sales return reserve	126	191
Other accruals	2,703	1,805
Total accrued liabilities	$17,146	$22,401

Accrued_Warranty_Detail

Accrued Warranty (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Accrued Warranty [Line Items]	'	'	'
Balance at beginning of period	$686	$350	'
Accrual for warranties issued during the period	187	116	'
Adjustments to warranty accrued	-3	46	'
Actual costs incurred	-192	-97	'
Balance at end of period	678	415	'
Reported as:	'	'	'
Current	376	'	384
Non-current	302	'	302
Total accrued warranty	$678	$415	'

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014
Accumulated Other Comprehensive Income Loss [Line Items]	'
Accumulated Other Comprehensive Income, Net Unrealized Gains, Beginning Balance	$23
Accumulated Other Comprehensive Income, Net Unrealized Gains, Change in net unrealized gains	-8
Accumulated Other Comprehensive Income, Net Unrealized Gains, Net gains reclassification into other expense, net	'
Accumulated Other Comprehensive Income, Net Unrealized Gains, Ending Balance	15
Accumulated Other Comprehensive Income, Income Tax Provision, Beginning Balance	'
Accumulated Other Comprehensive Income, Income Tax Provision, Change in net unrealized gain	'
Accumulated Other Comprehensive Income, Income Tax Provision, Net gains reclassification in to other expense, net	'
Accumulated Other Comprehensive Income, Income Tax Provision, Ending Balance	'
Accumulated Other Comprehensive Income, Net Unrealized Gains, net of tax, Beginning Balance	23
Accumulated Other Comprehensive Income, Net Unrealized Gains, net of tax, Changes in net unrealized gains	-8
Accumulated Other Comprehensive Income, Net Unrealized Gains, net of tax, Net gains reclassification into other expense, net	'
Accumulated Other Comprehensive Income, Net Unrealized Gains, net of tax, Ending Balance	$15

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	Mar. 29, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Related Party Transaction [Line Items]	'	'
Gigamon LLC members’ distribution payable	$0	$476

Commitment_and_Contingencies_A

Commitment and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Commitments And Contingent Liabilities [Line Items]	'	'	'
Rent expense for operating leases	$0.80	$0.20	'
Purchase commitments with vendors	$6.40	'	$7.50

Future_Minimum_Lease_Payments_

Future Minimum Lease Payments Under Non-Cancelable Operating Leases (Detail) (USD $)	Mar. 29, 2014
In Thousands, unless otherwise specified
Operating Leases Disclosure [Line Items]	'
2014 (remaining nine months)	$1,242
2015	3,139
2016	3,223
2017	3,315
2018	972
Thereafter	43
Operating Leases Future Minimum Payments Due	$11,934

Preferred_Stock_and_Stockholde2

Preferred Stock and Stockholders' Equity - Additional Information (Detail) (USD $)

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

1 Months Ended

In Millions, except Share data, unless otherwise specified

Mar. 29, 2014

Dec. 28, 2013

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 29, 2014

Mar. 30, 2013

Dec. 28, 2013

Mar. 29, 2014

Dec. 28, 2013

Mar. 29, 2014

Dec. 28, 2013

Mar. 29, 2014

Jun. 29, 2013

Mar. 29, 2014

Mar. 29, 2014

Jun. 17, 2013

Jun. 17, 2013

Jun. 17, 2013

Oct. 28, 2013

Oct. 28, 2013

Oct. 28, 2013

31-May-13

Vote

2013 Equity Plan

2012 Plan

Employee Stock

Unit Option Plan

Stock Options

Stock Options

Stock Options

Performance Shares

Performance Shares

Restricted Stock Units (RSUs)

Restricted Stock Units (RSUs)

Maximum

Maximum

Maximum

Minimum

Preferred Stock

IPO

IPO

Follow-On Public Offering

Follow-On Public Offering

Follow-On Public Offering

Limited Liability Conversion

2013 Equity Plan

Employee Stock

Restricted Stock Units (RSUs)

Restricted Stock Units (RSUs)

Existing Shareholders

Existing Shareholders

Parent Company and Existing Shareholders

Schedule Of Stockholders Equity [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares of common stock issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,512,500

'

300,000

'

'

16,851,635

Public offering, shares amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,762,500

2,250,000

'

4,800,000

5,100,000

'

Underwriters exercise of public offering overallotment shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,012,500

'

'

'

'

'

Public offering, price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$19

'

'

$38.50

$38.50

'

Conversion of redeemable convertible preferred units into common stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,100,000

'

'

'

'

'

'

Stock Options Exercised

408,724

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

293,718

'

'

Aggregate exercise price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1.30

'

'

Common stock, shares authorized

1,000,000,000

1,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, par value

$0.00

$0.00

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, votes per unit

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares issued

31,874,708

31,152,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares outstanding

31,874,708

31,152,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, shares authorized

20,000,000

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, par value

$0.00

$0.00

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, shares issued

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, shares outstanding

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity plan, shares authorized

'

'

4,394,221

'

'

'

'

'

'

'

'

'

'

'

439,422

'

'

'

'

'

'

'

'

'

Equity plan, additional shares authorized

'

'

'

'

439,422

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee Stock Purchase Plan (ESPP), maximum percentage of eligible compensation to purchase shares by eligible participants

'

'

'

'

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Price as a percentage of fair market value

'

'

'

'

85.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee Stock Purchase Plan (ESPP), Plan Description

'

'

'

'

'Employees are able to purchase shares at 85% of the lower of the fair market value of the Company’s common stock (i) at the date of commencement of the offering period or (ii) at the last day of the purchase period. The ESPP provides for a 24-month offering period comprised of four purchase periods of approximately six months.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

ESPP offering period

'

'

'

'

'24 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock issued under ESPP

'

'

'

'

242,278

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued, price per share

'

'

'

'

$16.15

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share based compensation, description

'

'

'(i) 1,464,740 shares, (ii) 5% of the outstanding shares of common stock as of the last day of the immediately preceding fiscal year, or (iii) such other amount as determined by the Board.

'

'

'

'Vested stock options may be exercised up to ten years from the vesting commencement date. Under the 2012 Plan, vested but unexercised stock options expire 30 days after termination of service with the Company.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional common stock shares authorized upon termination of awards under the 2012 Plan

'

'

'

'

'

'

'

'

'

'

'

'

'

4,967,172

'

'

'

'

'

'

'

'

'

'

Increasing common stock shares outstanding

'

'

1,464,740

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of outstanding shares of common stock

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares outstanding

3,137,396

3,378,303

1,242,705

'

'

3,153,730

'

'

'

23,088

39,998

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting Period

'

'

'

'

'

'

'4 years

'

'

'

'

'

'

'

'

'4 years

'3 years

'

'

'

'

'

'

'

Percent vest on first anniversary from grant date

'

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Option expiration term

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Option expiration term after termination of service

'

'

'3 months

'30 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted-average fair value for options vested

'

'

'

'

'

'

$11.48

$7.60

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair market value per share

'

'

'

'

'

'

$29.66

'

$28.29

'

'

$29.66

$28.29

'

'

'

'

'

'

'

'

'

'

'

Shares granted

'

'

'

'

'

'

10,666

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized compensation expenses

'

'

'

'

$4.20

'

$11.50

'

'

'

'

$22.60

'

'

'

'

'

'

'

'

'

'

'

'

Compensation Expense Weighted-average remaining Amortization period

'

'

'

'

'1 year 1 month 6 days

'

'1 year 3 months 18 days

'

'

'

'

'1 year 7 months 6 days

'

'

'

'

'

'

'

'

'

'

'

'

Stock_Option_Activity_Detail

Stock Option Activity (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013
Number of Stock Options Outstanding	'	'
Number of Stock Options Outstanding, Beginning balance	3,378,303	'
Number of Stock Options Outstanding, Options granted	242,621	'
Number of Stock Options Outstanding, Options exercised	-408,724	'
Number of Stock Options Outstanding, Options cancelled	-74,804	'
Number of Stock Options Outstanding, Ending balance	3,137,396	3,378,303
Number of Stock Options Outstanding, Vested and expected to vest	2,986,654	'
Number of Stock Options Outstanding, Exercisable	808,890	'
Weighted-Average Exercise Price Per Award	'	'
Weighted-Average Exercise Price Per Award, Beginning balance	$9.77	'
Weighted-Average Exercise Price Per Award, Options granted	$30.44	'
Weighted-Average Exercise Price Per Award, Options exercised	$7.08	'
Weighted-Average Exercise Price Per Award, Options cancelled	$9.20	'
Weighted-Average Exercise Price Per Award, Ending balance	$11.74	$9.77
Weighted-Average Exercise Price Per Award, Vested and expected to vest	$11.58	'
Weighted-Average Exercise Price Per Award, Exercisable	$7	'
Weighted-average remaining contractual life (years)	'	'
Weighted-average remaining contractual life (years)	'8 years 6 months 29 days	'8 years 9 months 11 days
Weighted-average remaining contractual life (years), Vested and expected to vest	'8 years 6 months 29 days	'
Weighted-average remaining contractual life (years), Exercisable	'8 years 5 months 23 days	'
Aggregate Intrinsic Value	'	'
Aggregate intrinsic value, Beginning balance	$62,725	'
Aggregate intrinsic value, Ending balance	56,502	62,725
Aggregate intrinsic value, Vested and expected to vest	54,254	'
Aggregate intrinsic value, Exercisable	$18,332	'

Restricted_Stock_Units_Activit

Restricted Stock Units Activity (Detail) (Restricted Stock Units (RSUs), USD $)	3 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013
Restricted Stock Units (RSUs)	'	'
Number of RSUs Outstanding	'	'
Number of RSUs Outstanding, Beginning balance	840,949	'
Number of RSUs Outstanding, Granted	586,040	'
Number of RSUs Outstanding, Released	-123,669	'
Number of RSUs Outstanding, Cancelled	-44,281	'
Number of RSUs Outstanding, Ending balance	1,259,039	840,949
Number of RSUs Outstanding, Vested and expected to vest	1,157,454	'
Weighted-Average Grant Date Fair Value Per Award	'	'
Weighted-Average Grant Date Fair Value Per Award, Beginning balance	$21	'
Weighted-Average Grant Date Fair Value Per Award, Granted	$30.63	'
Weighted-Average Grant Date Fair Value Per Award, Released	$16.26	'
Weighted-Average Grant Date Fair Value Per Award, Cancelled	$21.68	'
Weighted-Average Grant Date Fair Value Per Award, Ending balance	$25.93	$21
Weighted-Average Grant Date Fair Value Per Award, Vested and expected to vest	$25.81	'
Weighted-Average Remaining Contractual Life (Years)	'	'
Weighted Average Remaining Contractual Life (Years)	'1 year 7 months 21 days	'1 year 4 months 24 days
Weighted Average Remaining Contractual Life (Years), Vested and expected to vest	'1 year 7 months 2 days	'
Aggregate Intrinsic Value	'	'
Aggregate Intrinsic Value, Balance	$37,343	$23,790
Aggregate Intrinsic Value, Vested and expected to vest	$34,330	'

Assumptions_used_to_Estimate_F

Assumptions used to Estimate Fair Value (Detail) (USD $)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Stock options	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'
Expected dividend rate	0.00%	'
Stock options | Minimum	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'
Expected term (in years)	'6 years	'5 years 9 months 18 days
Risk-free interest rate	1.82%	1.00%
Expected volatility	61.90%	63.80%
Expected dividend rate	'	'
Grant date fair value per award	$17.32	$9.44
Stock options | Maximum	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'
Expected term (in years)	'6 years 1 month 6 days	'6 years 1 month 6 days
Risk-free interest rate	1.89%	'
Grant date fair value per award	$32.06	$9.61
Employee Stock	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'
Expected dividend rate	0.00%	'
Employee Stock | Minimum	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'
Expected term (in years)	'6 months	'
Risk-free interest rate	0.08%	'
Expected volatility	44.80%	'
Expected dividend rate	'	'
Grant date fair value per share	$8.23	'
Employee Stock | Maximum	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'
Expected term (in years)	'2 years	'
Risk-free interest rate	0.31%	'
Expected volatility	52.70%	'
Grant date fair value per share	$13.06	'

Sharebased_Compensation_Expens

Share-based Compensation Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'
Share-based compensation expense	$7,858	$1,593
Cost of revenue	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'
Share-based compensation expense	448	18
Research and development	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'
Share-based compensation expense	2,599	309
Sales and marketing	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'
Share-based compensation expense	2,773	429
General and administrative	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'
Share-based compensation expense	$2,038	$837

Defined_Contribution_Plans_Add

Defined Contribution Plans - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Schedule Of Defined Contribution Plans [Line Items]	'	'
Contributions to 401(k) defined contribution plan	$0.70	$0.50

Income_Tax_Additional_Informat

Income Tax - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Income Tax Disclosure [Line Items]	'	'
Income tax benefit (provision)	$3,700,000	($29,000)
Effective tax rate	31.00%	'
Deferred tax assets	24,600,000	'
Unrecognized tax benefits	$400,000	'

Computation_of_Basic_and_Dilut

Computation of Basic and Diluted Net (Loss) Income Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Numerator:	'	'
Net loss attributable to common stockholders	($8,218)	($1,215)
Denominator:	'	'
Weighted average shares used for basic and diluted net loss per share computation	31,734	17,300
Net loss per share attributable to common stockholders:	'	'
Basic and Diluted	($0.26)	($0.07)

Potentially_Dilutive_Securitie

Potentially Dilutive Securities Excluded from Computation of Diluted Net (Loss) Income Per Common Stock (Detail)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013
Convertible Series A preferred stock	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Antidilutive securities excluded from computation of diluted net income per unit	0	8,110
Option Plans' awards to purchase common stock	'	'
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]	'	'
Antidilutive securities excluded from computation of diluted net income per unit	4,399	3,070

Segment_Information_Additional

Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 29, 2014
	Segment
Segment Reporting Disclosure [Line Items]	'
Number of segments	1

Revenues_and_LongLived_Assets_

Revenues and Long-Lived Assets by Geographic Region (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'
Revenues	$31,760	$25,813	'
Long-lived assets	6,004	'	4,389
United States	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'
Revenues	23,125	16,857	'
Long-lived assets	5,807	'	4,203
Rest of Americas	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'
Revenues	2,910	2,208	'
Europe, Middle East and Africa	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'
Revenues	3,753	3,397	'
Asia Pacific	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'
Revenues	1,972	3,351	'
Other	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'
Long-lived assets	$197	'	$186