Gigamon (GIMO) 10-Q 8 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 28, 2014	Jul. 31, 2014
Document And Entity Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	28-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
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	'	32,012,111

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'
Cash and cash equivalents	$30,923	$79,908
Short-term investments	103,917	58,242
Accounts receivable	17,287	24,528
Inventories, net	7,704	1,484
Deferred tax assets	'	3,574
Prepaid expenses and other current assets	5,849	5,606
Total current assets	165,680	173,342
Property and equipment, net	7,654	4,389
Deferred tax assets, non-current	12	17,315
Other assets	484	471
TOTAL ASSETS	173,830	195,517
CURRENT LIABILITIES:	'	'
Accounts payable	5,228	1,405
Accrued liabilities	17,020	22,401
Deferred revenue	37,750	37,592
Gigamon LLC members’ distribution payable	0	476
Total current liabilities	59,998	61,874
Deferred revenue, non-current	10,293	9,884
Other liabilities, non-current	1,642	321
TOTAL LIABILITIES	71,933	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 June 28, 2014 and December 28, 2013	'	'
Common stock—$0.0001 par value; 1,000,000 shares authorized, 32,005 shares and 31,152 shares issued and outstanding as of June 28, 2014 and December 28, 2013, respectively	3	3
Treasury stock—No par value; 8,110 shares authorized and outstanding as of June 28, 2014 and December 28, 2013	-12,469	-12,469
Additional paid-in capital	163,951	144,810
Accumulated other comprehensive income	50	23
Accumulated deficit	-49,638	-8,929
TOTAL STOCKHOLDERS’ EQUITY	101,897	123,438
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$173,830	$195,517

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 28, 2014	Dec. 28, 2013
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	32,005,135	31,152,000
Common stock, shares outstanding	32,005,135	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		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Revenue:	'	'	'	'
Product	$22,544	$23,354	$42,624	$40,873
Services	12,307	9,055	23,987	17,349
Total revenue	34,851	32,409	66,611	58,222
Cost of revenue:	'	'	'	'
Product	6,281	6,944	13,286	11,668
Services	1,544	1,911	3,124	2,564
Total cost of revenue	7,825	8,855	16,410	14,232
Gross profit	27,026	23,554	50,201	43,990
Operating expenses:	'	'	'	'
Research and development	10,860	17,097	21,798	22,768
Sales and marketing	19,558	26,114	37,728	38,535
General and administrative	4,446	12,688	10,451	16,197
Total operating expenses	34,864	55,899	69,977	77,500
Loss from operations	-7,838	-32,345	-19,776	-33,510
Interest income	73	1	134	3
Other income (expense), net	6	-18	-35	-25
Loss before income tax (provision) benefit	-7,759	-32,362	-19,677	-33,532
Income tax (provision) benefit	-24,727	22,569	-21,027	22,540
Net loss	-32,486	-9,793	-40,704	-10,992
Accretion of preferred stock to redemption value and issuance costs	'	-503	'	-1,088
Loss distributable to preferred stockholders	'	538	'	1,107
Net loss attributable to common stockholders	($32,486)	($9,758)	($40,704)	($10,973)
Net loss per share attributable to common stockholders:	'	'	'	'
Basic and Diluted	($1.01)	($0.51)	($1.28)	($0.60)
Weighted average shares used in computing net loss per share attributable to common stockholders:	'	'	'	'
Basic and Diluted	32,116	19,247	31,895	18,284

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Net loss	($32,486)	($9,793)	($40,704)	($10,992)
Other comprehensive loss:	'	'	'	'
Change in unrealized gain on available-for-sale investments, net of taxes	35	'	27	'
Comprehensive loss	-32,451	-9,793	-40,677	-10,992
Accretion of preferred stock to redemption value and issuance costs	'	-503	'	-1,088
Loss distributable to preferred stockholders	'	538	'	1,107
Comprehensive loss attributable to common stockholders	($32,451)	($9,758)	($40,677)	($10,973)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013
Cash flows from operating activities:	'	'
Net loss	($40,704)	($10,992)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:	'	'
Depreciation and amortization	2,237	1,198
Stock-based compensation expense	13,897	18,290
Deferred income taxes	20,877	-22,583
Inventory write-down	2,437	395
Loss on disposal of fixed assets	'	14
Changes in operating assets and liabilities:	'	'
Accounts receivable	7,241	2,769
Inventories	-7,936	963
Prepaid expenses and other assets	-1,097	230
Accounts payable	3,349	-85
Accrued liabilities and other liabilities	-4,617	19,385
Deferred revenue	567	5,481
Net cash (used in) provided by operating activities	-3,749	15,065
Cash flows from investing activities:	'	'
Purchases of short-term investments	-60,644	'
Proceeds from sales of short-term investments	2,000	'
Proceeds from maturities of short-term investments	13,412	'
Purchases of property and equipment	-4,732	-2,200
Net cash used in investing activities	-49,964	-2,200
Cash flows from financing activities:	'	'
Proceeds from employee stock purchase plan	3,863	'
Proceeds from exercise of stock options	3,571	11
Proceeds from initial public offering, net of costs	-8	97,068
Shares repurchased for tax withholdings on vesting of restricted stock units and stock option exercises	-2,222	'
Distributions to Gigamon LLC members	-476	-7,097
Net cash provided by financing activities	4,728	89,982
Net (decrease) increase in cash and cash equivalents	-48,985	102,847
Cash and cash equivalents at beginning of period	79,908	'
Cash and cash equivalents at end of period	30,923	121,522
Non-cash Investing and Financing Activities:	'	'
Conversion of preferred stock into common stock	'	29,432
Unpaid property and equipment purchases	860	'
Accretion of preferred stock to redemption value and issuance costs discount	'	1,088
Unpaid deferred offering costs	'	$1,777

Description_of_the_Business

Description of the Business	6 Months Ended
	Jun. 28, 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	6 Months Ended
	Jun. 28, 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 June 28, 2014, its results of operations, comprehensive loss for the three and six months ended June 28, 2014 and June 29, 2013, and cash flows for the six months ended June 28, 2014 and June 29, 2013. The financial data and the other financial information disclosed in the accompanying notes to the condensed consolidated financial statements related to these three and six 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 and six months ended June 28, 2014 are not necessarily indicative of the results to be expected for the full fiscal year or any other future periods.
	Revision of Prior Consolidated Financial Statements
	During the three months ended December 28, 2013 the Company identified errors related to income taxes and inventory in its unaudited interim consolidated financial statements for the three and six months period ended June 29, 2013. As result of the stock-based compensation expense from the Company’s 2013 Employee Stock Purchase Plan (the “ESPP”) being inappropriately included in the determination of the deferred income tax benefit the benefit for income taxes was cumulatively overstated by $2.0 million in the three and six month periods ended June 29, 2013. Furthermore, the recovery of previously written down inventory was cumulatively understated by $0.2 million in the three and six month periods ended June 29, 2013 due to an error in the calculation.
	The Company assessed the materiality of the above errors both individually and in the aggregate on prior periods’ financial statements in accordance with the SEC’s Staff Accounting Bulletin No. 99 and, based on an analysis of quantitative and qualitative factors, determined that the errors were not material to the Company’s June 29, 2013 interim consolidated financial statements and, therefore, these previously issued consolidated financial statements could continue to be relied upon and that amendments of the previously filed Quarterly Reports on Form 10-Q were not required. However, if the aggregated corrections were recorded in the three months ended December 28, 2013, the cumulative errors would be material to the financial results for the three months ended December 28, 2013. Accordingly, the Company had previously revised its consolidated statements of operations, comprehensive loss, and cash flows for the three and six months ended June 29, 2013 as presented herein to correct these errors.
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of operations for the three and six months ended June 29, 2013 (in thousands, except per share amounts):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Consolidated Statement of Operations Data:
	Revenue:
	Product	$	23,354		$	—		$	—			$	23,354			$	40,873		$	—		$	—		$	40,873
	Services		9,055			—			—				9,055				17,349			—			—			17,349
	Total revenue		32,409			—			—				32,409				58,222			—			—			58,222
	Cost of revenue:
	Product		7,098			—			(154	)			6,944				11,822			—			(154	)		11,668
	Services		1,911			—			—				1,911				2,564			—			—			2,564
	Total cost of revenue		9,009			—			(154	)			8,855				14,386			—			(154	)		14,232
	Gross profit		23,400			—		154					23,554				43,836			—		154				43,990
	Research and development		17,097			—			—				17,097				22,768			—			—			22,768
	Sales and marketing		26,114			—			—				26,114				38,535			—			—			38,535
	General and administrative		12,688			—			—				12,688				16,197			—			—			16,197
	Total operating expenses		55,899			—			—				55,899				77,500			—			—			77,500
	Loss from operations		(32,499	)		—		154					(32,345	)			(33,664	)		—		154				(33,510	)
	Interest income	1				—			—			1				3				—			—		3
	Other expense, net		(18	)		—			—				(18	)			(25	)		—			—			(25	)
	Loss before income tax		(32,516	)		—		154					(32,362	)			(33,686	)		—		154				(33,532	)
	benefit (provision)
	Income tax  benefit (provision)		24,571			(2,002	)		—				22,569				24,542			(2,002	)		—			22,540
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Accretion of preferred stock		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	to redemption value and
	issuance costs
	Loss distributable to preferred	538				—			—			538					1,107			—			—			1,107
	stockholders
	Net loss attributable to common	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	stockholders
	Net loss per share attributable
	to common stockholders:
	Basic	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
	Diluted	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of comprehensive loss for the three and six month ended June 29, 2013 (in thousands):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Other comprehensive loss:
	Accretion of preferred stock to		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	redemption value and
	issuance costs
	Loss distributable to		538			—			—				538				1,107			—			—			1,107
	preferred stockholders
	Comprehensive loss attributable	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	to common stockholders
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of cash flows for the six month ended June 29, 2013:
		Six Months ended June 29, 2013
					Income Tax					Inventory
		(As Reported)			Adjustment					Adjustment					(As Revised)
Cash flows from operating activities:
Net loss	$	(9,144	)	$	(2,002	)			$	154				$	(10,992	)
Adjustments to reconcile net loss to net cash provided by operating activities:
Deferred income taxes		(24,585	)		2,002										(22,583	)
Inventory write-down		549								(154	)				395
Net cash provided by operating activities		15,065			—					—					15,065
Cash flows from investing activities:
Net cash used in investing activities		(2,200	)		—					—					(2,200	)
Cash flows from financing activities:
Net cash provided by financing activities		89,982			—					—					89,982
Net increase in cash and cash equivalents		102,847			—					—					102,847
Cash and cash equivalents at beginning of period		18,675			—					—					18,675
Cash and cash equivalents at end of period	$	121,522		$	—				$	—				$	121,522
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 in 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						Six Months Ended
	June 28,			June 29,			June 28,				June 29,
	2014			2013			2014				2013
Percent of Net Revenue:
Customer A (distributor)		39%			57%			42%				57%
Customer B (distributor)		15%		*				17%			*
* Represents less than 10% of total revenue
	As of
	June 28,			December 31,
	2014			2013
Percent of Accounts Receivable:
Customer A (distributor)		24%			23%
Customer B (distributor)		18%			11%
Customer C (end-user)		13%		**
** Represents less than 10% of accounts receivable
In the three and six months ended June 28, 2014 and June 29, 2013, no end-user customer accounted for 10% or more of total revenue.
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 and six months ended June 28, 2014, the Company recognized a $0.6 million and $2.4 million inventory write-down within cost of revenue and a $0.3 million and $0.7 million benefit from the sale of previously written-down inventory. In the three and six months ended June 29, 2013, the Company recognized a $0.1 million benefit from the sale of previously written-down inventory.
Revenue Recognition
The Company generates product revenue from sales of traffic visibility solutions to 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 June 28, 2014 and December 28, 2013, deferred product costs were $1.1 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 provides for income taxes under the asset and liability method. Under this method, deferred income tax assets, including those related to tax loss carryforwards and credits, and liabilities are determined based on the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation allowance is recorded to reduce deferred tax assets when management cannot conclude that it is more-likely-than-not that the deferred tax asset will be recovered. The valuation allowance is determined by assessing both positive and negative evidence to determine whether it is more-likely-than-not that deferred tax assets are recoverable; such assessment is performed on a jurisdiction-by-jurisdiction basis.
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 of 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 May 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The effective date of this ASU will be the first quarter of fiscal year 2017 using one of two retrospective application methods. We have not determined the potential effects on our condensed consolidated financial statements.
In June 2014, the FASB issued ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. This ASU requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A company should apply existing guidance in Topic 718 as it relates to awards with performance conditions that affect vesting to account for such awards. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which the requisite service has already been rendered. The amendments in this update are effective for annual periods and interim periods within annual periods beginning after December 15, 2015 and early adoption is permitted. The adoption of this guidance will not have a material impact on the Company’s consolidated financial statements.

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Jun. 28, 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
				Quoted Prices
				in Active		Significant
				Markets for		Other			Significant
		As of		Identical		Observable			Unobservable
		June 28,		Assets		Inputs			Inputs
		2014		(Level 1)		(Level 2)			(Level 3)
	Cash equivalents:
	Money market funds	$	30,317	$	30,317	$	—		$	—
	Total cash equivalents		30,317	$	30,317	$	—		$	—
	Cash		606
	Total cash and cash equivalents	$	30,923
	Short-term investments:
	Corporate debt securities	$	59,015	$	—	$	59,015		$	—
	U.S. agency debt securities		30,403		—		30,403			—
	U.S. government securities		14,499		—		14,499			—
	Total short-term investments	$	103,917	$	—	$	103,917		$	—
				Fair Value Measured Using
				Quoted Prices
				in Active		Significant
				Markets for		Other			Significant
		As of		Identical		Observable			Unobservable
		December 28,		Assets		Inputs			Inputs
		2013		(Level 1)		(Level 2)			(Level 3)
	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 maturity or 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.  These available-for-sale investments are presented as current assets as they are available for current operations.
	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 six months ended June 28, 2014 and June 29, 2013. As of June 28, 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 June 28, 2014
				Gross		Gross
				Unrealized		Unrealized
		Amortized Costs		Gains		Losses			Fair Value
	Cash and cash equivalents:
	Money market funds	$	30,317	$	—	$	—		$	30,317
	Cash and cash equivalents:		606		—		—			606
	Total cash and cash equivalents	$	30,923	$	—	$	0		$	30,923
	Short-term investments:
	Corporate debt securities	$	58,983	$	43	$	(11	)	$	59,015
	U.S. agency debt securities		30,405		5		(7	)		30,403
	U.S. government securities		14,480		21		(2	)		14,499
	Total short-term investments	$	103,868	$	69	$	(20	)	$	103,917
	The Company’s realized gain was immaterial in the six months ended June 28, 2014. There were no securities in a continuous loss position for 12 months or longer as of June 28, 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
		June 28,		December 28,
		2014		2013
Due within one year	$	51,043	$	100,674
Due between one and two years		52,874		37,169
Total		103,917		137,843
Cash and cash equivalents		30,923		307
Total cash, cash equivalents and short-term investments	$	134,840	$	138,150

Balance_Sheet_Components

Balance Sheet Components	6 Months Ended
	Jun. 28, 2014
Balance Sheet Components	'
	4. Balance Sheet Components
	Inventories
	Inventories are comprised of the following (in thousands):
		As of
		June 28,			December 28,
		2014			2013
	Raw materials	$	462		$	59
	Finished goods		7,242			1,425
	Total inventories	$	7,704		$	1,484
	Accrued Liabilities
	The following table presents the components of accrued liabilities (in thousands):
		As of
		June 28,			December 28,
		2014			2013
	Accrued employee related costs	$	6,377		$	10,067
	Accrued inventory and other purchases		2,740			2,961
	Accrued employee stock purchase plan contributions		2,268			3,558
	Accrued professional services		1,199			1,028
	Accrued payroll and other taxes		776			1,908
	Accrued warranty		386			384
	Accrued cooperative marketing funds		379			303
	Income taxes payable		390			196
	Sales return reserve		138			191
	Other accruals		2,367			1,805
	Total accrued liabilities	$	17,020		$	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):
		Six Months Ended
		June 28,			June 29,
		2014			2013
	Balance at beginning of period	$	686		$	350
	Accrual for warranties issued during the period		453			256
	Adjustments to warranty accrued		29			27
	Actual costs incurred		(456	)		(178	)
	Balance at end of period	$	712		$	455
		As Of
		June 28,			December 28,
		2014			2013
	Reported as:
	Current	$	386		$	384
	Non-current		326			302
	Total accrued warranty	$	712		$	686
	Accumulated Other Comprehensive Income
	Accumulated other comprehensive income consists of unrealized gains from available-for-sale securities.
	The following summarizes the activity within accumulated other comprehensive income (in thousands):
		Accumulated Other Comprehensive Income
								Net Unrealized
		Net Unrealized			Income Tax			Gains, net of
		Gains			Provision			tax
	Balance as of December 28, 2013	$	23		$	—		$	23
	Change in net unrealized gains		27			—			27
	Net gains reclassified into other expense, net		—			—			—
	Balance as of June 28, 2014	$	50		$	—		$	50

Related_Party_Transactions

Related Party Transactions	6 Months Ended
	Jun. 28, 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 June 28, 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	6 Months Ended
	Jun. 28, 2014
Commitments and Contingencies	'
	6. Commitments and Contingencies
	Lease Commitments
	The Company leases office space for its current headquarters, in Santa Clara, California, and its United Kingdom subsidiary under non-cancelable operating leases that expire at various times through November 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, Singapore, France and Dubai. The Company’s lease on its former headquarters in Milpitas, California terminated in 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 $0.6 million and $0.2 million for the three months ended June 28, 2014 and June 29, 2013, respectively, and $1.4 million and $0.4 million for the six months ended June 28, 2014 and June 29, 2013, respectively.
	Future minimum lease payments under non-cancelable operating leases as of June 28, 2014 were as follows (in thousands):
	Fiscal Year:
	2014 (remaining six months)	$	1,096
	2015		3,217
	2016		3,256
	2017		3,340
	2018		963
	Thereafter		82
		$	11,954
	Purchase Commitments
	As of June 28, 2014 and December 28, 2013, the Company’s purchase orders for inventories and related components totaled $2.3 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	6 Months Ended
	Jun. 28, 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 June 28, 2014, the Company had 32,005,135 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 June 28 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 six months ended June 28, 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 February 15 and August 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 six months ended June 28, 2014, there was one purchase period that resulted in issuance of 242,278 shares of common stock 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 six months ended June 28, 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 June 28, 2014, outstanding awards under the 2013 Equity Plan and the 2012 Plan covered 1,640,952 shares and 2,741,910 shares of the Company’s common stock, respectively.
	Stock Options
	Stock options granted 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:
									Weighted-
		Number of			Weighted-				Average
		Stock			Average				Remaining
		Options			Exercise				Contractual			Aggregate
		Outstanding			Price				Life			Intrinsic Value
									(Years)			(in thousands)
	Balance — December 28, 2013		3,378,303		$	9.77				8.78		$	62,725
	Stock options granted		435,363			24.72
	Stock options exercised		(490,287	)		7.47
	Stock options cancelled		(358,795	)		10.36
	Balance — June 28, 2014		2,964,584		$	12.28				7.92		$	22,994
	Vested and expected to vest — June 28, 2014		2,819,326		$	12.09				7.84		$	23,182
	Exercisable — June 28, 2014		977,793		$	7.88				6.67		$	11,174
	Aggregate intrinsic value represents the difference between the exercise price of the awards and the Company’s fair value per share of $19.30 and $28.29 as of June 28, 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 six months ended June 28, 2014 and June 29, 2013 was $14.44 and $12.94, respectively. As of June 28, 2014 and December 28, 2013, there were 34,665 shares and 39,998 shares of common stock subject to stock options with performance-based vesting criteria.
	In the six months ended June 28, 2014, the Company accelerated the vesting of 12,861 shares of common stock pursuant to outstanding stock options and 7,708 RSUs of an executive pursuant to the terms of his employment agreement. The accelerated vesting did not result in any additional charge since the fair value of the accelerated options and RSUs was lower than the previously recognized stock-based compensation expense.
	In the six months ended June 28, 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 June 28, 2014. As of June 28, 2014, unrecognized stock-based compensation expense related to these modified stock options was immaterial.
	Restricted Stock Units
	RSUs generally vest over a period of four years. RSUs vest on the vesting dates determined by the Company. 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:
									Weighted-
					Weighted-				Average
		Number of			Average				Remaining
		RSUs			Grant Date				Contractual			Aggregate
		Outstanding			Fair Value				Life (Years)			Intrinsic Value
												(in thousands)
	Balance — December 28, 2013		840,949		$	21				1.4		$	23,790
	RSUs granted		916,411			25.49
	RSUs released		(210,363	)		18.22
	RSUs cancelled		(128,719	)		25.6
	Balance — June 28, 2014		1,418,278		$	23.9				1.63		$	27,373
	Vested and expected to vest — June 28, 2014		1,283,930		$	23.87				1.57		$	24,780
	Aggregate intrinsic value for RSUs represents the Company’s fair market value per share of $19.30 and $28.29 as of June 28, 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					Six Months Ended
		June 28,			June 29,		June 28,				June 29,
		2014			2013		2014				2013
	Stock option awards:
	Expected term (in years)	5.3-6.1			5.0-6.3		5.3-6.1				5.0-6.3
	Risk-free interest rate	1.7%-1.8%			0.9%-1.7%		1.7%-1.9%				0.9%-1.7%
	Expected volatility		59.40%		65.30%		59.4%-61.9%				63.8%-65.3%
	Expected dividend rate		—		— %			—			— %
	Grant date fair value per award	$9.20-$9.86			$10.31-$19.00		$9.20-$32.06				$9.44-$19.00
	ESPP purchase rights:
	Expected term (in years)	0.5-2.0			0.7-2.2		0.5-2.0				0.7-2.2
Risk-free interest rate	0.1%-0.3%			0.1%-0.2%		0.1%-0.3%				0.1%-0.2%
Expected volatility	44.8%-52.7%			53.6%-63.1%		44.8%-52.7%				53.6%-63.1%
Expected dividend rate		—		— %			—			— %
Grant date fair value per share	$8.23-$13.06			$12.11-$15.68		$8.23-$13.06				$12.11-$15.68
The following table presents the stock-based compensation expense recorded in the Company’s condensed consolidated statements of operations (in thousands):
	Three Months Ended							Six Months Ended
	June 28,			June 29,				June 28,			June 29,
	2014			2013				2014			2013
Cost of revenue	$	471		$	2,691			$	919		$	2,709
Research and development		2,054			6,069				4,653			6,378
Sales and marketing		2,424			5,263				5,198			5,692
General and administrative		1,090			2,674				3,127			3,511
Total stock-based compensation expense	$	6,039		$	16,697			$	13,897		$	18,290
As of June 28, 2014, unrecognized compensation expense related to stock options, RSUs and ESPP purchase rights, net of estimated forfeitures, of $8.9 million, $19.6 million and $2.7 million, respectively, will be amortized over a weighted-average remaining period of 1.3 years, 1.6 years and 0.9 years, respectively. There was no capitalized stock-based compensation expense for any period presented as they were not material to the overall financial statements.

Defined_Contribution_Plans

Defined Contribution Plans	6 Months Ended
	Jun. 28, 2014
Defined Contribution Plans	'
	8. Defined Contribution Plans
	The Company’s contributions to the 401(k) defined contribution plan were $0.6 million and $0.4 million for the three months ended June 28, 2014 and June 29, 2013, respectively, and $1.2 million and $0.9 million for six months ended June 28, 2014 and June 29, 2013.

Income_Tax

Income Tax	6 Months Ended
	Jun. 28, 2014
Income Tax	'
	9. Income Tax
	The provision for income taxes for the six months ended June 28, 2014, was primarily related to the establishment of a valuation allowance against the deferred tax assets in the United States and the taxes assessed by foreign jurisdictions. As of June 28, 2014 the Company assessed that it is more-likely-than-not that it will not realize its federal and state deferred tax assets based on the absence of sufficient positive objective evidence that it would generate sufficient taxable income in our United States tax jurisdiction to realize the deferred tax assets. Accordingly, the Company recorded a valuation allowance on its federal and state deferred tax assets for an amount of $24.6 million and was charged to the income tax provision.
	The recording of $24.6 million of valuation allowance was primarily due to ongoing losses and the uncertainty regarding future results adjusted for permanent differences which have resulted in a more likely than not determination that the deferred tax assets would not be realized..  In making this determination, the Company considered all available evidence, both positive and negative. Such evidence included, among others, the Company’s history of profitability and losses, jurisdictional income recognition trends, pretax losses adjusted for certain extraordinary and other items, and forecasted income by jurisdiction. The benefit from income taxes for six months ended June 29, 2013 was $25.0 million in the initial recognition of deferred tax assets, upon the conversion of the limited liability company to a corporation, partially offset by current foreign taxes.
	The Company recognizes interest and penalties related to uncertain tax positions as part of the income tax provision.  To date, no such interest and penalties have been accrued.
	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 June 28, 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_per_Share

Net Loss per Share	6 Months Ended
	Jun. 28, 2014
Net Loss 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. Prior to the Series A Conversion the net income (loss) per share in the three months ended June 29, 2013 was presented in conformity with the two-class method as the then- 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 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 and six months ended June 28, 2014 and June 29, 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						Six Months Ended
		June 28,			June 29,			June 28,			June 29,
		2014			2013			2014			2013
					(As Revised)						(As Revised)
	Numerator:
	Net loss attributable to common stockholders	$	(32,486	)	$	(9,758	)	$	(40,704	)	$	(10,973	)
	Denominator:
	Weighted average shares used for basic and diluted net loss per share		32,116			19,247			31,895			18,284
	computation
	Net loss per share attributable to common stockholders:
	Basic and diluted	$	(1.01	)	$	(0.51	)	$	(1.28	)	$	(0.60	)
	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						Three Months Ended
		June 28,			June 29,			June 28,			June 29,
		2014			2013			2014			2013
	Redeemable convertible Series A		—			6,951			—			7,524
	Equity awards to purchase common stock		4,358			1,321			4,520			1,302

Segment_Information

Segment Information	6 Months Ended
	Jun. 28, 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				Six Months Ended
		June 28,		June 29,		June 28,		June 29,
		2014		2013		2014		2013
	United States	$	24,665	$	25,698	$	47,791	$	42,555
	Rest of Americas		2,664		871		5,574		3,079
	Europe, Middle East and Africa		4,919		3,698		8,672		7,095
	Asia Pacific		2,603		2,142		4,574		5,493
	Total	$	34,851	$	32,409	$	66,611	$	58,222
	The Company’s long-lived assets by geographic region are summarized as follows (in thousands):
		As of
		June 28,		December 28,
		2014		2013
	United States	$	7,454	$	4,203
	Other		200		186
	Total	$	7,654	$	4,389

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 28, 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
	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 June 28, 2014, its results of operations, comprehensive loss for the three and six months ended June 28, 2014 and June 29, 2013, and cash flows for the six months ended June 28, 2014 and June 29, 2013. The financial data and the other financial information disclosed in the accompanying notes to the condensed consolidated financial statements related to these three and six 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 and six months ended June 28, 2014 are not necessarily indicative of the results to be expected for the full fiscal year or any other future periods.
	Revision of Prior Consolidated Financial Statements
	During the three months ended December 28, 2013 the Company identified errors related to income taxes and inventory in its unaudited interim consolidated financial statements for the three and six months period ended June 29, 2013. As result of the stock-based compensation expense from the Company’s 2013 Employee Stock Purchase Plan (the “ESPP”) being inappropriately included in the determination of the deferred income tax benefit the benefit for income taxes was cumulatively overstated by $2.0 million in the three and six month periods ended June 29, 2013. Furthermore, the recovery of previously written down inventory was cumulatively understated by $0.2 million in the three and six month periods ended June 29, 2013 due to an error in the calculation.
	The Company assessed the materiality of the above errors both individually and in the aggregate on prior periods’ financial statements in accordance with the SEC’s Staff Accounting Bulletin No. 99 and, based on an analysis of quantitative and qualitative factors, determined that the errors were not material to the Company’s June 29, 2013 interim consolidated financial statements and, therefore, these previously issued consolidated financial statements could continue to be relied upon and that amendments of the previously filed Quarterly Reports on Form 10-Q were not required. However, if the aggregated corrections were recorded in the three months ended December 28, 2013, the cumulative errors would be material to the financial results for the three months ended December 28, 2013. Accordingly, the Company had previously revised its consolidated statements of operations, comprehensive loss, and cash flows for the three and six months ended June 29, 2013 as presented herein to correct these errors.
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of operations for the three and six months ended June 29, 2013 (in thousands, except per share amounts):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Consolidated Statement of Operations Data:
	Revenue:
	Product	$	23,354		$	—		$	—			$	23,354			$	40,873		$	—		$	—		$	40,873
	Services		9,055			—			—				9,055				17,349			—			—			17,349
	Total revenue		32,409			—			—				32,409				58,222			—			—			58,222
	Cost of revenue:
	Product		7,098			—			(154	)			6,944				11,822			—			(154	)		11,668
	Services		1,911			—			—				1,911				2,564			—			—			2,564
	Total cost of revenue		9,009			—			(154	)			8,855				14,386			—			(154	)		14,232
	Gross profit		23,400			—		154					23,554				43,836			—		154				43,990
	Research and development		17,097			—			—				17,097				22,768			—			—			22,768
	Sales and marketing		26,114			—			—				26,114				38,535			—			—			38,535
	General and administrative		12,688			—			—				12,688				16,197			—			—			16,197
	Total operating expenses		55,899			—			—				55,899				77,500			—			—			77,500
	Loss from operations		(32,499	)		—		154					(32,345	)			(33,664	)		—		154				(33,510	)
	Interest income	1				—			—			1				3				—			—		3
	Other expense, net		(18	)		—			—				(18	)			(25	)		—			—			(25	)
	Loss before income tax		(32,516	)		—		154					(32,362	)			(33,686	)		—		154				(33,532	)
	benefit (provision)
	Income tax  benefit (provision)		24,571			(2,002	)		—				22,569				24,542			(2,002	)		—			22,540
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Accretion of preferred stock		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	to redemption value and
	issuance costs
	Loss distributable to preferred	538				—			—			538					1,107			—			—			1,107
	stockholders
	Net loss attributable to common	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	stockholders
	Net loss per share attributable
	to common stockholders:
	Basic	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
	Diluted	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of comprehensive loss for the three and six month ended June 29, 2013 (in thousands):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Other comprehensive loss:
	Accretion of preferred stock to		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	redemption value and
	issuance costs
	Loss distributable to		538			—			—				538				1,107			—			—			1,107
	preferred stockholders
	Comprehensive loss attributable	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	to common stockholders
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of cash flows for the six month ended June 29, 2013:
		Six Months ended June 29, 2013
					Income Tax					Inventory
		(As Reported)			Adjustment					Adjustment					(As Revised)
	Cash flows from operating activities:
Net loss	$	(9,144	)	$	(2,002	)			$	154				$	(10,992	)
Adjustments to reconcile net loss to net cash provided by operating activities:
Deferred income taxes		(24,585	)		2,002										(22,583	)
Inventory write-down		549								(154	)				395
Net cash provided by operating activities		15,065			—					—					15,065
Cash flows from investing activities:
Net cash used in investing activities		(2,200	)		—					—					(2,200	)
Cash flows from financing activities:
Net cash provided by financing activities		89,982			—					—					89,982
Net increase in cash and cash equivalents		102,847			—					—					102,847
Cash and cash equivalents at beginning of period		18,675			—					—					18,675
Cash and cash equivalents at end of period	$	121,522		$	—				$	—				$	121,522
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 June 28, 2014, its results of operations, comprehensive loss for the three and six months ended June 28, 2014 and June 29, 2013, and cash flows for the six months ended June 28, 2014 and June 29, 2013. The financial data and the other financial information disclosed in the accompanying notes to the condensed consolidated financial statements related to these three and six 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 and six months ended June 28, 2014 are not necessarily indicative of the results to be expected for the full fiscal year or any other future periods.
Revision of Prior Consolidated Financial Statements	'
	Revision of Prior Consolidated Financial Statements
	During the three months ended December 28, 2013 the Company identified errors related to income taxes and inventory in its unaudited interim consolidated financial statements for the three and six months period ended June 29, 2013. As result of the stock-based compensation expense from the Company’s 2013 Employee Stock Purchase Plan (the “ESPP”) being inappropriately included in the determination of the deferred income tax benefit the benefit for income taxes was cumulatively overstated by $2.0 million in the three and six month periods ended June 29, 2013. Furthermore, the recovery of previously written down inventory was cumulatively understated by $0.2 million in the three and six month periods ended June 29, 2013 due to an error in the calculation.
	The Company assessed the materiality of the above errors both individually and in the aggregate on prior periods’ financial statements in accordance with the SEC’s Staff Accounting Bulletin No. 99 and, based on an analysis of quantitative and qualitative factors, determined that the errors were not material to the Company’s June 29, 2013 interim consolidated financial statements and, therefore, these previously issued consolidated financial statements could continue to be relied upon and that amendments of the previously filed Quarterly Reports on Form 10-Q were not required. However, if the aggregated corrections were recorded in the three months ended December 28, 2013, the cumulative errors would be material to the financial results for the three months ended December 28, 2013. Accordingly, the Company had previously revised its consolidated statements of operations, comprehensive loss, and cash flows for the three and six months ended June 29, 2013 as presented herein to correct these errors.
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of operations for the three and six months ended June 29, 2013 (in thousands, except per share amounts):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Consolidated Statement of Operations Data:
	Revenue:
	Product	$	23,354		$	—		$	—			$	23,354			$	40,873		$	—		$	—		$	40,873
	Services		9,055			—			—				9,055				17,349			—			—			17,349
	Total revenue		32,409			—			—				32,409				58,222			—			—			58,222
	Cost of revenue:
	Product		7,098			—			(154	)			6,944				11,822			—			(154	)		11,668
	Services		1,911			—			—				1,911				2,564			—			—			2,564
	Total cost of revenue		9,009			—			(154	)			8,855				14,386			—			(154	)		14,232
	Gross profit		23,400			—		154					23,554				43,836			—		154				43,990
	Research and development		17,097			—			—				17,097				22,768			—			—			22,768
	Sales and marketing		26,114			—			—				26,114				38,535			—			—			38,535
	General and administrative		12,688			—			—				12,688				16,197			—			—			16,197
	Total operating expenses		55,899			—			—				55,899				77,500			—			—			77,500
	Loss from operations		(32,499	)		—		154					(32,345	)			(33,664	)		—		154				(33,510	)
	Interest income	1				—			—			1				3				—			—		3
	Other expense, net		(18	)		—			—				(18	)			(25	)		—			—			(25	)
	Loss before income tax		(32,516	)		—		154					(32,362	)			(33,686	)		—		154				(33,532	)
	benefit (provision)
	Income tax  benefit (provision)		24,571			(2,002	)		—				22,569				24,542			(2,002	)		—			22,540
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Accretion of preferred stock		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	to redemption value and
	issuance costs
	Loss distributable to preferred	538				—			—			538					1,107			—			—			1,107
	stockholders
	Net loss attributable to common	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	stockholders
	Net loss per share attributable
	to common stockholders:
	Basic	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
	Diluted	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of comprehensive loss for the three and six month ended June 29, 2013 (in thousands):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Other comprehensive loss:
	Accretion of preferred stock to		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	redemption value and
	issuance costs
	Loss distributable to		538			—			—				538				1,107			—			—			1,107
	preferred stockholders
	Comprehensive loss attributable	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	to common stockholders
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of cash flows for the six month ended June 29, 2013:
		Six Months ended June 29, 2013
					Income Tax					Inventory
		(As Reported)			Adjustment					Adjustment					(As Revised)
	Cash flows from operating activities:
	Net loss	$	(9,144	)	$	(2,002	)			$	154				$	(10,992	)
	Adjustments to reconcile net loss to net cash provided by operating activities:
	Deferred income taxes		(24,585	)		2,002										(22,583	)
	Inventory write-down		549								(154	)				395
	Net cash provided by operating activities		15,065			—					—					15,065
	Cash flows from investing activities:
Net cash used in investing activities		(2,200	)		—					—					(2,200	)
Cash flows from financing activities:
Net cash provided by financing activities		89,982			—					—					89,982
Net increase in cash and cash equivalents		102,847			—					—					102,847
Cash and cash equivalents at beginning of period		18,675			—					—					18,675
Cash and cash equivalents at end of period	$	121,522		$	—				$	—				$	121,522
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 in 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						Six Months Ended
		June 28,			June 29,			June 28,				June 29,
		2014			2013			2014				2013
	Percent of Net Revenue:
	Customer A (distributor)		39%			57%			42%				57%
	Customer B (distributor)		15%		*				17%			*
	* Represents less than 10% of total revenue
		As of
		June 28,			December 31,
		2014			2013
	Percent of Accounts Receivable:
	Customer A (distributor)		24%			23%
	Customer B (distributor)		18%			11%
	Customer C (end-user)		13%		**
	** Represents less than 10% of accounts receivable
	In the three and six months ended June 28, 2014 and June 29, 2013, no end-user customer accounted for 10% or more of total revenue.
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 and six months ended June 28, 2014, the Company recognized a $0.6 million and $2.4 million inventory write-down within cost of revenue and a $0.3 million and $0.7 million benefit from the sale of previously written-down inventory. In the three and six months ended June 29, 2013, the Company recognized a $0.1 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 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 June 28, 2014 and December 28, 2013, deferred product costs were $1.1 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 provides for income taxes under the asset and liability method. Under this method, deferred income tax assets, including those related to tax loss carryforwards and credits, and liabilities are determined based on the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation allowance is recorded to reduce deferred tax assets when management cannot conclude that it is more-likely-than-not that the deferred tax asset will be recovered. The valuation allowance is determined by assessing both positive and negative evidence to determine whether it is more-likely-than-not that deferred tax assets are recoverable; such assessment is performed on a jurisdiction-by-jurisdiction basis.
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 of 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 May 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification 605, Revenue Recognition. This ASU is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The effective date of this ASU will be the first quarter of fiscal year 2017 using one of two retrospective application methods. We have not determined the potential effects on our condensed consolidated financial statements.
	In June 2014, the FASB issued ASU No. 2014-12, Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. This ASU requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A company should apply existing guidance in Topic 718 as it relates to awards with performance conditions that affect vesting to account for such awards. Compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which the requisite service has already been rendered. The amendments in this update are effective for annual periods and interim periods within annual periods beginning after December 15, 2015 and early adoption is permitted. The adoption of this guidance will not have a material impact on the Company’s consolidated financial statements.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 28, 2014
Accounting Errors on Previously Reported Consolidated Statements of Operations	'
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of operations for the three and six months ended June 29, 2013 (in thousands, except per share amounts):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Consolidated Statement of Operations Data:
	Revenue:
	Product	$	23,354		$	—		$	—			$	23,354			$	40,873		$	—		$	—		$	40,873
	Services		9,055			—			—				9,055				17,349			—			—			17,349
	Total revenue		32,409			—			—				32,409				58,222			—			—			58,222
	Cost of revenue:
	Product		7,098			—			(154	)			6,944				11,822			—			(154	)		11,668
	Services		1,911			—			—				1,911				2,564			—			—			2,564
	Total cost of revenue		9,009			—			(154	)			8,855				14,386			—			(154	)		14,232
	Gross profit		23,400			—		154					23,554				43,836			—		154				43,990
	Research and development		17,097			—			—				17,097				22,768			—			—			22,768
	Sales and marketing		26,114			—			—				26,114				38,535			—			—			38,535
	General and administrative		12,688			—			—				12,688				16,197			—			—			16,197
	Total operating expenses		55,899			—			—				55,899				77,500			—			—			77,500
	Loss from operations		(32,499	)		—		154					(32,345	)			(33,664	)		—		154				(33,510	)
	Interest income	1				—			—			1				3				—			—		3
	Other expense, net		(18	)		—			—				(18	)			(25	)		—			—			(25	)
	Loss before income tax		(32,516	)		—		154					(32,362	)			(33,686	)		—		154				(33,532	)
	benefit (provision)
	Income tax  benefit (provision)		24,571			(2,002	)		—				22,569				24,542			(2,002	)		—			22,540
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Accretion of preferred stock		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	to redemption value and
	issuance costs
	Loss distributable to preferred	538				—			—			538					1,107			—			—			1,107
	stockholders
	Net loss attributable to common	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	stockholders
	Net loss per share attributable
	to common stockholders:
	Basic	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
	Diluted	$	(0.41	)								$	(0.51	)		$	(0.41	)							$	(0.51	)
Accounting Errors on Previously Reported Consolidated Statements of Comprehensive Loss	'
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of comprehensive loss for the three and six month ended June 29, 2013 (in thousands):
		Three Months ended June 29, 2013														Six Months ended June 29, 2013
					Income Tax			Inventory											Income Tax			Inventory
		(As Reported)			Adjustment			Adjustment				(As Revised)				(As Reported)			Adjustment			Adjustment			(As Revised)
	Net loss	$	(7,945	)	$	(2,002	)	$	154			$	(9,793	)		$	(9,144	)	$	(2,002	)	$	154		$	(10,992	)
	Other comprehensive loss:
	Accretion of preferred stock to		(503	)		—			—				(503	)			(1,088	)		—			—			(1,088	)
	redemption value and
	issuance costs
	Loss distributable to		538			—			—				538				1,107			—			—			1,107
	preferred stockholders
	Comprehensive loss attributable	$	(7,910	)	$	(2,002	)	$	154			$	(9,758	)		$	(9,125	)	$	(2,002	)	$	154		$	(10,973	)
	to common stockholders
Accounting Errors on Previously Reported Consolidated Statements of Cash Flows	'
	The following table sets forth the impact of the accounting errors on the previously reported consolidated statements of cash flows for the six month ended June 29, 2013:
		Six Months ended June 29, 2013
					Income Tax					Inventory
		(As Reported)			Adjustment					Adjustment					(As Revised)
	Cash flows from operating activities:
	Net loss	$	(9,144	)	$	(2,002	)			$	154				$	(10,992	)
	Adjustments to reconcile net loss to net cash provided by operating activities:
	Deferred income taxes		(24,585	)		2,002										(22,583	)
	Inventory write-down		549								(154	)				395
	Net cash provided by operating activities		15,065			—					—					15,065
	Cash flows from investing activities:
	Net cash used in investing activities		(2,200	)		—					—					(2,200	)
	Cash flows from financing activities:
	Net cash provided by financing activities		89,982			—					—					89,982
	Net increase in cash and cash equivalents		102,847			—					—					102,847
	Cash and cash equivalents at beginning of period		18,675			—					—					18,675
	Cash and cash equivalents at end of period	$	121,522		$	—				$	—				$	121,522
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						Six Months Ended
		June 28,			June 29,			June 28,				June 29,
		2014			2013			2014				2013
	Percent of Net Revenue:
	Customer A (distributor)		39%			57%			42%				57%
	Customer B (distributor)		15%		*				17%			*
	* Represents less than 10% of total revenue
		As of
		June 28,			December 31,
		2014			2013
	Percent of Accounts Receivable:
	Customer A (distributor)		24%			23%
	Customer B (distributor)		18%			11%
	Customer C (end-user)		13%		**
	** Represents less than 10% of accounts receivable

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 28, 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
				Quoted Prices
				in Active		Significant
				Markets for		Other			Significant
		As of		Identical		Observable			Unobservable
		June 28,		Assets		Inputs			Inputs
		2014		(Level 1)		(Level 2)			(Level 3)
	Cash equivalents:
	Money market funds	$	30,317	$	30,317	$	—		$	—
	Total cash equivalents		30,317	$	30,317	$	—		$	—
	Cash		606
	Total cash and cash equivalents	$	30,923
	Short-term investments:
	Corporate debt securities	$	59,015	$	—	$	59,015		$	—
	U.S. agency debt securities		30,403		—		30,403			—
	U.S. government securities		14,499		—		14,499			—
	Total short-term investments	$	103,917	$	—	$	103,917		$	—
				Fair Value Measured Using
				Quoted Prices
				in Active		Significant
				Markets for		Other			Significant
		As of		Identical		Observable			Unobservable
		December 28,		Assets		Inputs			Inputs
		2013		(Level 1)		(Level 2)			(Level 3)
	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 June 28, 2014
				Gross		Gross
				Unrealized		Unrealized
		Amortized Costs		Gains		Losses			Fair Value
	Cash and cash equivalents:
	Money market funds	$	30,317	$	—	$	—		$	30,317
	Cash and cash equivalents:		606		—		—			606
	Total cash and cash equivalents	$	30,923	$	—	$	0		$	30,923
	Short-term investments:
	Corporate debt securities	$	58,983	$	43	$	(11	)	$	59,015
	U.S. agency debt securities		30,405		5		(7	)		30,403
	U.S. government securities		14,480		21		(2	)		14,499
	Total short-term investments	$	103,868	$	69	$	(20	)	$	103,917
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
		June 28,		December 28,
		2014		2013
	Due within one year	$	51,043	$	100,674
	Due between one and two years		52,874		37,169
	Total		103,917		137,843
	Cash and cash equivalents		30,923		307
	Total cash, cash equivalents and short-term investments	$	134,840	$	138,150

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	6 Months Ended
	Jun. 28, 2014
Inventories	'
	Inventories are comprised of the following (in thousands):
		As of
		June 28,			December 28,
		2014			2013
	Raw materials	$	462		$	59
	Finished goods		7,242			1,425
	Total inventories	$	7,704		$	1,484
Accrued Liabilities	'
	The following table presents the components of accrued liabilities (in thousands):
		As of
		June 28,			December 28,
		2014			2013
	Accrued employee related costs	$	6,377		$	10,067
	Accrued inventory and other purchases		2,740			2,961
	Accrued employee stock purchase plan contributions		2,268			3,558
	Accrued professional services		1,199			1,028
	Accrued payroll and other taxes		776			1,908
	Accrued warranty		386			384
	Accrued cooperative marketing funds		379			303
	Income taxes payable		390			196
	Sales return reserve		138			191
	Other accruals		2,367			1,805
	Total accrued liabilities	$	17,020		$	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):
		Six Months Ended
		June 28,			June 29,
		2014			2013
	Balance at beginning of period	$	686		$	350
	Accrual for warranties issued during the period		453			256
	Adjustments to warranty accrued		29			27
	Actual costs incurred		(456	)		(178	)
	Balance at end of period	$	712		$	455
		As Of
		June 28,			December 28,
		2014			2013
	Reported as:
	Current	$	386		$	384
	Non-current		326			302
	Total accrued warranty	$	712		$	686
Accumulated Other Comprehensive Income	'
	The following summarizes the activity within accumulated other comprehensive income (in thousands):
		Accumulated Other Comprehensive Income
								Net Unrealized
		Net Unrealized			Income Tax			Gains, net of
		Gains			Provision			tax
	Balance as of December 28, 2013	$	23		$	—		$	23
	Change in net unrealized gains		27			—			27
	Net gains reclassified into other expense, net		—			—			—
	Balance as of June 28, 2014	$	50		$	—		$	50

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 28, 2014
Future Minimum Lease Payments under Non-Cancelable Operating Leases	'
	Future minimum lease payments under non-cancelable operating leases as of June 28, 2014 were as follows (in thousands):
	Fiscal Year:
	2014 (remaining six months)	$	1,096
	2015		3,217
	2016		3,256
	2017		3,340
	2018		963
	Thereafter		82
		$	11,954

Preferred_Stock_and_Stockholde1

Preferred Stock and Stockholders' Equity (Tables)	6 Months Ended
	Jun. 28, 2014
Stock Option Activity	'
	The following table summarizes the stock option activity related to shares of common stock under the Company’s Option Plans:
									Weighted-
		Number of			Weighted-				Average
		Stock			Average				Remaining
		Options			Exercise				Contractual			Aggregate
		Outstanding			Price				Life			Intrinsic Value
									(Years)			(in thousands)
	Balance — December 28, 2013		3,378,303		$	9.77				8.78		$	62,725
	Stock options granted		435,363			24.72
	Stock options exercised		(490,287	)		7.47
	Stock options cancelled		(358,795	)		10.36
	Balance — June 28, 2014		2,964,584		$	12.28				7.92		$	22,994
	Vested and expected to vest — June 28, 2014		2,819,326		$	12.09				7.84		$	23,182
	Exercisable — June 28, 2014		977,793		$	7.88				6.67		$	11,174
Restricted Stock Units Activity	'
	The following table summarizes the RSU activity under the Company’s Option Plans:
									Weighted-
					Weighted-				Average
		Number of			Average				Remaining
		RSUs			Grant Date				Contractual			Aggregate
		Outstanding			Fair Value				Life (Years)			Intrinsic Value
												(in thousands)
	Balance — December 28, 2013		840,949		$	21				1.4		$	23,790
	RSUs granted		916,411			25.49
	RSUs released		(210,363	)		18.22
	RSUs cancelled		(128,719	)		25.6
	Balance — June 28, 2014		1,418,278		$	23.9				1.63		$	27,373
	Vested and expected to vest — June 28, 2014		1,283,930		$	23.87				1.57		$	24,780
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					Six Months Ended
		June 28,			June 29,		June 28,				June 29,
		2014			2013		2014				2013
	Stock option awards:
	Expected term (in years)	5.3-6.1			5.0-6.3		5.3-6.1				5.0-6.3
	Risk-free interest rate	1.7%-1.8%			0.9%-1.7%		1.7%-1.9%				0.9%-1.7%
	Expected volatility		59.40%		65.30%		59.4%-61.9%				63.8%-65.3%
	Expected dividend rate		—		— %			—			— %
	Grant date fair value per award	$9.20-$9.86			$10.31-$19.00		$9.20-$32.06				$9.44-$19.00
	ESPP purchase rights:
	Expected term (in years)	0.5-2.0			0.7-2.2		0.5-2.0				0.7-2.2
	Risk-free interest rate	0.1%-0.3%			0.1%-0.2%		0.1%-0.3%				0.1%-0.2%
	Expected volatility	44.8%-52.7%			53.6%-63.1%		44.8%-52.7%				53.6%-63.1%
	Expected dividend rate		—		— %			—			— %
	Grant date fair value per share	$8.23-$13.06			$12.11-$15.68		$8.23-$13.06				$12.11-$15.68
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							Six Months Ended
		June 28,			June 29,				June 28,			June 29,
		2014			2013				2014			2013
	Cost of revenue	$	471		$	2,691			$	919		$	2,709
	Research and development		2,054			6,069				4,653			6,378
	Sales and marketing		2,424			5,263				5,198			5,692
	General and administrative		1,090			2,674				3,127			3,511
	Total stock-based compensation expense	$	6,039		$	16,697			$	13,897		$	18,290

Net_Loss_per_Share_Tables

Net Loss per Share (Tables)	6 Months Ended
	Jun. 28, 2014
Net 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						Six Months Ended
		June 28,			June 29,			June 28,			June 29,
		2014			2013			2014			2013
					(As Revised)						(As Revised)
	Numerator:
	Net loss attributable to common stockholders	$	(32,486	)	$	(9,758	)	$	(40,704	)	$	(10,973	)
	Denominator:
	Weighted average shares used for basic and diluted net loss per share		32,116			19,247			31,895			18,284
	computation
	Net loss per share attributable to common stockholders:
	Basic and diluted	$	(1.01	)	$	(0.51	)	$	(1.28	)	$	(0.60	)
Potentially Dilutive Securities Excluded from Computation of Diluted Net loss 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						Three Months Ended
		June 28,			June 29,			June 28,			June 29,
		2014			2013			2014			2013
	Redeemable convertible Series A		—			6,951			—			7,524
	Equity awards to purchase common stock		4,358			1,321			4,520			1,302

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 28, 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				Six Months Ended
		June 28,		June 29,		June 28,		June 29,
		2014		2013		2014		2013
	United States	$	24,665	$	25,698	$	47,791	$	42,555
	Rest of Americas		2,664		871		5,574		3,079
	Europe, Middle East and Africa		4,919		3,698		8,672		7,095
	Asia Pacific		2,603		2,142		4,574		5,493
	Total	$	34,851	$	32,409	$	66,611	$	58,222
	The Company’s long-lived assets by geographic region are summarized as follows (in thousands):
		As of
		June 28,		December 28,
		2014		2013
	United States	$	7,454	$	4,203
	Other		200		186
	Total	$	7,654	$	4,389

Significant_Accounting_Policie3

Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Schedule Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Inventory write-down	$600,000	'	$2,437,000	$395,000	'
Recovery of Inventories	'	100,000	700,000	100,000	'
Deferred product costs	1,100,000	'	1,100,000	'	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	'	'
Income Tax Adjustment	'	'	'	'	'
Schedule Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Prior period errors related to income taxes and inventory, amount	'	2,000,000	'	2,000,000	'
Inventory Valuation and Obsolescence	'	'	'	'	'
Schedule Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Prior period errors related to income taxes and inventory, amount	'	$200,000	'	$200,000	'

Significant_Accounting_Policie4

Significant Accounting Policies - Accounting Errors On Previously Reported Consolidated Statement Of Operations (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Revenue:	'	'	'	'
Product	$22,544	$23,354	$42,624	$40,873
Services	12,307	9,055	23,987	17,349
Total revenue	34,851	32,409	66,611	58,222
Cost of revenue:	'	'	'	'
Product	6,281	6,944	13,286	11,668
Services	1,544	1,911	3,124	2,564
Total cost of revenue	7,825	8,855	16,410	14,232
Gross profit	27,026	23,554	50,201	43,990
Research and development	10,860	17,097	21,798	22,768
Sales and marketing	19,558	26,114	37,728	38,535
General and administrative	4,446	12,688	10,451	16,197
Total operating expenses	34,864	55,899	69,977	77,500
Loss from operations	-7,838	-32,345	-19,776	-33,510
Interest income	73	1	134	3
Other expense, net	6	-18	-35	-25
Loss before income taxbenefit (provision)	-7,759	-32,362	-19,677	-33,532
Income tax (provision) benefit	-24,727	22,569	-21,027	22,540
Net loss	-32,486	-9,793	-40,704	-10,992
Accretion of preferred stock to redemption value and issuance costs	'	-503	'	-1,088
Loss distributable to preferred stockholders	'	538	'	1,107
Net loss attributable to common stockholders	-32,486	-9,758	-40,704	-10,973
Net loss per share attributable to common stockholders:	'	'	'	'
Basic	'	($0.51)	'	($0.51)
Diluted	'	($0.51)	'	($0.51)
As Reported	'	'	'	'
Revenue:	'	'	'	'
Product	'	23,354	'	40,873
Services	'	9,055	'	17,349
Total revenue	'	32,409	'	58,222
Cost of revenue:	'	'	'	'
Product	'	7,098	'	11,822
Services	'	1,911	'	2,564
Total cost of revenue	'	9,009	'	14,386
Gross profit	'	23,400	'	43,836
Research and development	'	17,097	'	22,768
Sales and marketing	'	26,114	'	38,535
General and administrative	'	12,688	'	16,197
Total operating expenses	'	55,899	'	77,500
Loss from operations	'	-32,499	'	-33,664
Interest income	'	1	'	3
Other expense, net	'	-18	'	-25
Loss before income taxbenefit (provision)	'	-32,516	'	-33,686
Income tax (provision) benefit	'	24,571	'	24,542
Net loss	'	-7,945	'	-9,144
Accretion of preferred stock to redemption value and issuance costs	'	-503	'	-1,088
Loss distributable to preferred stockholders	'	538	'	1,107
Net loss attributable to common stockholders	'	-7,910	'	-9,125
Net loss per share attributable to common stockholders:	'	'	'	'
Basic	'	($0.41)	'	($0.41)
Diluted	'	($0.41)	'	($0.41)
Income Tax Adjustment	'	'	'	'
Cost of revenue:	'	'	'	'
Income tax (provision) benefit	'	-2,002	'	-2,002
Net loss	'	-2,002	'	-2,002
Net loss attributable to common stockholders	'	-2,002	'	-2,002
Inventory Adjustment	'	'	'	'
Cost of revenue:	'	'	'	'
Product	'	-154	'	-154
Total cost of revenue	'	-154	'	-154
Gross profit	'	154	'	154
Loss from operations	'	154	'	154
Loss before income taxbenefit (provision)	'	154	'	154
Net loss	'	154	'	154
Net loss attributable to common stockholders	'	$154	'	$154

Significant_Accounting_Policie5

Significant Accounting Policies - Accounting Errors On Previously Reported Consolidated Statements Of Comprehensive Loss (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Net loss	($32,486)	($9,793)	($40,704)	($10,992)
Other comprehensive loss:	'	'	'	'
Accretion of preferred stock to redemption value and issuance costs	'	-503	'	-1,088
Loss distributable to preferred stockholders	'	538	'	1,107
Comprehensive loss attributable to common stockholders	-32,451	-9,758	-40,677	-10,973
As Reported	'	'	'	'
Net loss	'	-7,945	'	-9,144
Other comprehensive loss:	'	'	'	'
Accretion of preferred stock to redemption value and issuance costs	'	-503	'	-1,088
Loss distributable to preferred stockholders	'	538	'	1,107
Comprehensive loss attributable to common stockholders	'	-7,910	'	-9,125
Income Tax Adjustment	'	'	'	'
Net loss	'	-2,002	'	-2,002
Other comprehensive loss:	'	'	'	'
Comprehensive loss attributable to common stockholders	'	-2,002	'	-2,002
Inventory Adjustment	'	'	'	'
Net loss	'	154	'	154
Other comprehensive loss:	'	'	'	'
Comprehensive loss attributable to common stockholders	'	$154	'	$154

Significant_Accounting_Policie6

Significant Accounting Policies - Accounting Errors On Previously Reported Consolidated Statements Of Cash Flows (Detail) (USD $)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Cash flows from operating activities:	'	'	'
Net loss	($9,793)	($40,704)	($10,992)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:	'	'	'
Deferred income taxes	'	20,877	-22,583
Inventory write-down	'	2,437	395
Net cash provided by operating activities	'	-3,749	15,065
Cash flows from investing activities:	'	'	'
Net cash used in investing activities	'	-49,964	-2,200
Cash flows from financing activities:	'	'	'
Net cash provided by financing activities	'	4,728	89,982
Net increase in cash and cash equivalents	'	-48,985	102,847
Cash and cash equivalents at beginning of period	'	79,908	'
Cash and cash equivalents at end of period	121,522	30,923	121,522
As Reported	'	'	'
Cash flows from operating activities:	'	'	'
Net loss	-7,945	'	-9,144
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:	'	'	'
Deferred income taxes	'	'	-24,585
Inventory write-down	'	'	549
Net cash provided by operating activities	'	'	15,065
Cash flows from investing activities:	'	'	'
Net cash used in investing activities	'	'	-2,200
Cash flows from financing activities:	'	'	'
Net cash provided by financing activities	'	'	89,982
Net increase in cash and cash equivalents	'	'	102,847
Cash and cash equivalents at end of period	121,522	'	121,522
Income Tax Adjustment	'	'	'
Cash flows from operating activities:	'	'	'
Net loss	-2,002	'	-2,002
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:	'	'	'
Deferred income taxes	'	'	2,002
Inventory Adjustment	'	'	'
Cash flows from operating activities:	'	'	'
Net loss	154	'	154
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:	'	'	'
Inventory write-down	'	'	($154)

Customers_Representing_Major_R

Customers Representing Major Revenue and Accounts Receivable (Detail)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 28, 2014

Dec. 31, 2013

Jun. 28, 2014

Dec. 31, 2013

Jun. 28, 2014

Dec. 31, 2013

Net Revenue

Net Revenue

Net Revenue

Net Revenue

Net Revenue

Net Revenue

Net Revenue

Net Revenue

Accounts Receivable

Accounts Receivable

Accounts Receivable

Accounts Receivable

Accounts Receivable

Accounts Receivable

Customer A (distributor)

Customer A (distributor)

Customer A (distributor)

Customer A (distributor)

Customer B (distributor)

Customer B (distributor)

Customer B (distributor)

Customer B (distributor)

Customer A (distributor)

Customer A (distributor)

Customer B (distributor)

Customer B (distributor)

Customer C (end-user)

Customer C (end-user)

Concentration Risk [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Concentration risk

39.00%

57.00%

42.00%

57.00%

15.00%

'

[1]

17.00%

'

[1]

24.00%

23.00%

18.00%

11.00%

13.00%

'

[2]

[1]

Represents less than 10% of total revenue

[2]

Represents less than 10% of accounts receivable

Components_of_Cash_and_Cash_Eq

Components of Cash and Cash Equivalents (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Cash equivalents:	'	'
Cash and cash equivalents	$30,923	$79,908
Cash and Cash Equivalents	'	'
Cash equivalents:	'	'
Cash and cash equivalents	30,317	79,601
Short-term investments:	'	'
Short-term investments	30,923	'
Cash and Cash Equivalents | Corporate Debt Securities	'	'
Cash equivalents:	'	'
Cash and cash equivalents	'	501
Short-term Investments	'	'
Short-term investments:	'	'
Short-term investments	103,917	58,242
Short-term Investments | Corporate Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	59,015	42,210
Short-term Investments | US Government Agencies Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	30,403	11,035
Short-term Investments | US Government Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	14,499	4,997
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and Cash Equivalents	'	'
Cash equivalents:	'	'
Cash and cash equivalents	30,317	79,100
Significant Other Observable Inputs (Level 2) | Cash and Cash Equivalents	'	'
Cash equivalents:	'	'
Cash and cash equivalents	'	501
Significant Other Observable Inputs (Level 2) | Cash and Cash Equivalents | Corporate Debt Securities	'	'
Cash equivalents:	'	'
Cash and cash equivalents	'	501
Significant Other Observable Inputs (Level 2) | Short-term Investments	'	'
Short-term investments:	'	'
Short-term investments	103,917	58,242
Significant Other Observable Inputs (Level 2) | Short-term Investments | Corporate Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	59,015	42,210
Significant Other Observable Inputs (Level 2) | Short-term Investments | US Government Agencies Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	30,403	11,035
Significant Other Observable Inputs (Level 2) | Short-term Investments | US Government Debt Securities	'	'
Short-term investments:	'	'
Short-term investments	14,499	4,997
Money Market Funds | Cash and Cash Equivalents	'	'
Cash equivalents:	'	'
Cash and cash equivalents	30,317	79,100
Short-term investments:	'	'
Short-term investments	30,317	'
Money Market Funds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and Cash Equivalents	'	'
Cash equivalents:	'	'
Cash and cash equivalents	30,317	79,100
Cash | Cash and Cash Equivalents	'	'
Cash equivalents:	'	'
Cash and cash equivalents	606	307
Short-term investments:	'	'
Short-term investments	$606	'

Financial_Instruments_Measured

Financial Instruments Measured at Amortized Costs, Gross Unrealized Gain, Gross Unrealized Loss and Fair Value by Significant Investment Categories (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Cash and Cash Equivalents	'	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'	'
Amortized Costs	$30,923	'
Gross Unrealized Losses	0	'
Fair Value	30,923	'
Short-term Investments	'	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'	'
Amortized Costs	103,868	'
Gross Unrealized Gains	69	'
Gross Unrealized Losses	-20	'
Fair Value	103,917	58,242
Corporate Debt Securities | Short-term Investments	'	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'	'
Amortized Costs	58,983	'
Gross Unrealized Gains	43	'
Gross Unrealized Losses	-11	'
Fair Value	59,015	42,210
US Government Agencies Debt Securities | Short-term Investments	'	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'	'
Amortized Costs	30,405	'
Gross Unrealized Gains	5	'
Gross Unrealized Losses	-7	'
Fair Value	30,403	11,035
US Treasury and Government Short-term Debt Securities | Short-term Investments	'	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'	'
Amortized Costs	14,480	'
Gross Unrealized Gains	21	'
Gross Unrealized Losses	-2	'
Fair Value	14,499	'
Money Market Funds | Cash and Cash Equivalents	'	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'	'
Amortized Costs	30,317	'
Fair Value	30,317	'
Cash | Cash and Cash Equivalents	'	'
Cash And Cash Equivalents And Short Term Investments [Line Items]	'	'
Amortized Costs	606	'
Fair Value	$606	'

Contractual_Maturity_Date_of_S

Contractual Maturity Date of Short-Term Investments (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Contractual Maturity Date of Short-Term Investments [Abstract]	'	'
Due within one year	$51,043	$100,674
Due between one and two years	52,874	37,169
Total	103,917	137,843
Cash and cash equivalents	30,923	307
Total cash, cash equivalents and short-term investments	$134,840	$138,150

Inventories_Detail

Inventories (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Inventory [Line Items]	'	'
Raw materials	$462	$59
Finished goods	7,242	1,425
Total inventories	$7,704	$1,484

Accrued_Liabilities_Detail

Accrued Liabilities (Detail) (USD $)	Jun. 28, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Accrued Liabilities [Line Items]	'	'
Accrued employee related costs	$6,377	$10,067
Accrued inventory and other purchases	2,740	2,961
Accrued employee stock purchase plan contributions	2,268	3,558
Accrued professional services	1,199	1,028
Accrued payroll and other taxes	776	1,908
Accrued warranty	386	384
Accrued cooperative marketing funds	379	303
Income taxes payable	390	196
Sales return reserve	138	191
Other accruals	2,367	1,805
Total accrued liabilities	$17,020	$22,401

Accrued_Warranty_Detail

Accrued Warranty (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Accrued Warranty [Line Items]	'	'	'
Balance at beginning of period	$686	$350	'
Accrual for warranties issued during the period	453	256	'
Adjustments to warranty accrued	29	27	'
Actual costs incurred	-456	-178	'
Balance at end of period	712	455	'
Reported as:	'	'	'
Current	386	'	384
Non-current	326	'	302
Total accrued warranty	$712	$455	'

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 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	27
Accumulated Other Comprehensive Income, Net Unrealized Gains, Net gains reclassification into other expense, net	'
Accumulated Other Comprehensive Income, Net Unrealized Gains, Ending Balance	50
Accumulated Other Comprehensive Income, Income Tax Provision, Net gains reclassification in to other expense, net	'
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	27
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	$50

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	Jun. 28, 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		6 Months Ended
In Millions, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Commitments And Contingent Liabilities [Line Items]	'	'	'	'	'
Rent expense for operating leases	$0.60	$0.20	$1.40	$0.40	'
Purchase commitments with vendors	$2.30	'	$2.30	'	$7.50

Future_Minimum_Lease_Payments_

Future Minimum Lease Payments Under Non-Cancelable Operating Leases (Detail) (USD $)	Jun. 28, 2014
In Thousands, unless otherwise specified
Operating leases future minimum payments due fiscal year maturity [Abstract]	'
2014 (remaining six months)	$1,096
2015	3,217
2016	3,256
2017	3,340
2018	963
Thereafter	82
Operating Leases Future Minimum Payments Due	$11,954

Preferred_Stock_and_Stockholde2

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

0 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

0 Months Ended

In Millions, except Share data, unless otherwise specified

Jun. 28, 2014

Jun. 28, 2014

Dec. 28, 2013

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 28, 2014

Jun. 29, 2013

Dec. 28, 2013

Jun. 28, 2014

Dec. 28, 2013

Jun. 28, 2014

Dec. 28, 2013

Jun. 28, 2014

Jun. 29, 2013

Jun. 17, 2013

Jun. 17, 2013

Jun. 17, 2013

Oct. 28, 2013

Oct. 28, 2013

Oct. 28, 2013

31-May-13

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

Preferred Stock

IPO

IPO

Follow-On Public Offering

Follow-On Public Offering

Follow-On Public Offering

Limited Liability Conversion

2013 Equity Plan

Employee Stock

Existing Shareholders

Existing Shareholders

Parent Company and Existing Shareholders

Schedule Of Stockholders Equity [Line Items]

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Shares of common stock issued

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5,512,500

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300,000

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16,851,635

Public offering, shares amount

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7,762,500

2,250,000

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4,800,000

5,100,000

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Underwriters exercise of public offering overallotment shares

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1,012,500

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Public offering, price per share

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$19

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$38.50

$38.50

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Conversion of redeemable convertible preferred units into common stock

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8,100,000

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Stock Options Exercised

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490,287

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293,718

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Aggregate exercise price

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$1.30

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Common stock, shares authorized

1,000,000,000

1,000,000,000

1,000,000,000

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Common stock, par value

$0.00

$0.00

$0.00

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Common stock, votes per unit

'One vote for each share

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Common stock, shares issued

32,005,135

32,005,135

31,152,000

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Common stock, shares outstanding

32,005,135

32,005,135

31,152,000

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Preferred stock, shares authorized

20,000,000

20,000,000

20,000,000

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Preferred stock, par value

$0.00

$0.00

$0.00

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Preferred stock, shares issued

0

0

0

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Preferred stock, shares outstanding

0

0

0

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Equity plan, shares authorized

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4,394,221

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439,422

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Equity plan, additional shares authorized

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439,422

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

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15.00%

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Price as a percentage of fair market value

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85.00%

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Employee Stock Purchase Plan (ESPP), Plan Description

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'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.

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ESPP offering period

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'24 months

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Common stock issued under ESPP

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242,278

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Shares issued, price per share

'

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$16.15

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Share based compensation, description

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'(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.

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'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.

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

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4,967,172

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Increasing common stock shares outstanding

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1,464,740

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Percentage of outstanding shares of common stock

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5.00%

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Shares outstanding

2,964,584

2,964,584

3,378,303

1,640,952

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2,741,910

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34,665

39,998

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Vesting Period

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'4 years

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'4 years

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Percent vest on first anniversary from grant date

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25.00%

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Option expiration term

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'10 years

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Option expiration term after termination of service

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'3 months

'30 days

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Weighted-average fair value for options vested

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$14.44

$12.94

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Fair market value per share

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$19.30

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$28.29

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$19.30

$28.29

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Share-based compensation payment award, accelerated vesting, number, shares

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12,861

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7,708

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Shares granted

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10,666

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Unrecognized compensation expenses

'

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$2.70

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$8.90

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$19.60

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Compensation Expense Weighted-average remaining Amortization period

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'10 months 24 days

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'1 year 3 months 18 days

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'1 year 7 months 6 days

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Stock_Option_Activity_Detail

Stock Option Activity (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 28, 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	435,363	'
Number of Stock Options Outstanding, Options exercised	-490,287	'
Number of Stock Options Outstanding, Options cancelled	-358,795	'
Number of Stock Options Outstanding, Ending balance	2,964,584	3,378,303
Number of Stock Options Outstanding, Vested and expected to vest	2,819,326	'
Number of Stock Options Outstanding, Exercisable	977,793	'
Weighted-Average Exercise Price	'	'
Weighted-Average Exercise Price, Beginning balance	$9.77	'
Weighted-Average Exercise Price, Options granted	$24.72	'
Weighted-Average Exercise Price, Options exercised	$7.47	'
Weighted-Average Exercise Price, Options cancelled	$10.36	'
Weighted-Average Exercise Price, Ending balance	$12.28	$9.77
Weighted-Average Exercise Price, Vested and expected to vest	$12.09	'
Weighted-Average Exercise Price, Exercisable	$7.88	'
Weighted-average remaining contractual life (years)	'	'
Weighted-average remaining contractual life (years)	'7 years 11 months 1 day	'8 years 9 months 11 days
Weighted-average remaining contractual life (years), Vested and expected to vest	'7 years 10 months 2 days	'
Weighted-average remaining contractual life (years), Exercisable	'6 years 8 months 1 day	'
Aggregate Intrinsic Value	'	'
Aggregate intrinsic value, Beginning balance	$62,725	'
Aggregate intrinsic value, Ending balance	22,994	62,725
Aggregate intrinsic value, Vested and expected to vest	23,182	'
Aggregate intrinsic value, Exercisable	$11,174	'

Restricted_Stock_Units_Activit

Restricted Stock Units Activity (Detail) (Restricted Stock Units (RSUs), USD $)	6 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 28, 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	916,411	'
Number of RSUs Outstanding, Released	-210,363	'
Number of RSUs Outstanding, Cancelled	-128,719	'
Number of RSUs Outstanding, Ending balance	1,418,278	840,949
Number of RSUs Outstanding, Vested and expected to vest	1,283,930	'
Weighted-Average Grant Date Fair Value	'	'
Weighted-Average Grant Date Fair Value, Beginning balance	$21	'
Weighted-Average Grant Date Fair Value, Granted	$25.49	'
Weighted-Average Grant Date Fair Value, Released	$18.22	'
Weighted-Average Grant Date Fair Value, Cancelled	$25.60	'
Weighted-Average Grant Date Fair Value, Ending balance	$23.90	$21
Weighted-Average Grant Date Fair Value, Vested and expected to vest	$23.87	'
Weighted-Average Remaining Contractual Life (Years)	'	'
Weighted Average Remaining Contractual Life (Years)	'1 year 7 months 17 days	'1 year 11 months 23 days
Weighted Average Remaining Contractual Life (Years), Vested and expected to vest	'1 year 6 months 26 days	'
Aggregate Intrinsic Value	'	'
Aggregate Intrinsic Value, Balance	$27,373	$23,790
Aggregate Intrinsic Value, Vested and expected to vest	$24,780	'

Assumptions_used_to_Estimate_F

Assumptions used to Estimate Fair Value (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Stock Options	'	'	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'	'	'
Expected volatility	59.40%	65.30%	'	'
Expected dividend rate	'	'	'	'
Stock Options | Minimum	'	'	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'	'	'
Expected term (in years)	'5 years 3 months 18 days	'5 years	'5 years 3 months 18 days	'5 years
Risk-free interest rate	1.70%	0.90%	1.70%	0.90%
Expected volatility	'	'	59.40%	63.80%
Grant date fair value per award	9.2	10.31	9.2	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 3 months 18 days	'6 years 1 month 6 days	'6 years 3 months 18 days
Risk-free interest rate	1.80%	1.70%	1.90%	1.70%
Expected volatility	'	'	61.90%	65.30%
Grant date fair value per award	9.86	19	32.06	19
Employee Stock	'	'	'	'
Share Based Compensation Arrangement Assumptions Used To Estimate Fair Values Of Share Options Granted [Line Items]	'	'	'	'
Expected dividend rate	'	'	'	'
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	'8 months 12 days	'6 months	'8 months 12 days
Risk-free interest rate	0.10%	0.10%	0.10%	0.10%
Expected volatility	44.80%	53.60%	44.80%	53.60%
Expected dividend rate	'	'	'	'
Grant date fair value per share	8.23	12.11	8.23	12.11
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	'2 years 2 months 12 days	'2 years	'2 years 2 months 12 days
Risk-free interest rate	0.30%	0.20%	0.30%	0.20%
Expected volatility	52.70%	63.01%	52.70%	63.01%
Expected dividend rate	'	'	'	'
Grant date fair value per share	13.06	15.68	13.06	15.68

Sharebased_Compensation_Expens

Share-based Compensation Expense (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Jun. 29, 2013
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'	'	'	'
Stock-based compensation expense	$6,039	$16,697	$13,897	$18,290	$18,290
Cost of revenue	'	'	'	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'	'	'	'
Stock-based compensation expense	471	2,691	919	2,709	'
Research and development	'	'	'	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'	'	'	'
Stock-based compensation expense	2,054	6,069	4,653	6,378	'
Sales and marketing	'	'	'	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'	'	'	'
Stock-based compensation expense	2,424	5,263	5,198	5,692	'
General and administrative	'	'	'	'	'
Schedule Of Employee Service Share Based Compensation Expense Allocation [Line Items]	'	'	'	'	'
Stock-based compensation expense	$1,090	$2,674	$3,127	$3,511	'

Defined_Contribution_Plans_Add

Defined Contribution Plans - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Schedule Of Defined Contribution Plans [Line Items]	'	'	'	'
Contributions to 401(k) defined contribution plan	$0.60	$0.40	$1.20	$0.90

Income_Tax_Additional_Informat

Income Tax - Additional Information (Detail) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 29, 2013	Jun. 28, 2014
		State and Local Jurisdiction
Income Tax Disclosure [Line Items]	'	'
Deferred tax assets, valuation allowance	'	$24.60
Income tax benefits from initial recognition of deferred tax assets	($25)	'

Computation_of_Basic_and_Dilut

Computation of Basic and Diluted Net Loss per Share (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Numerator:	'	'	'	'
Net loss attributable to common stockholders	($32,486)	($9,758)	($40,704)	($10,973)
Denominator:	'	'	'	'
Weighted average shares used for basic and diluted net loss per share computation	32,116	19,247	31,895	18,284
Net loss per share attributable to common stockholders:	'	'	'	'
Basic and Diluted	($1.01)	($0.51)	($1.28)	($0.60)

Potentially_Dilutive_Securitie

Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss per Common Stock (Detail)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 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	'	6,951	'	7,524
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	4,358	1,321	4,520	1,302

Segment_Information_Additional

Segment Information - Additional Information (Detail)	6 Months Ended
	Jun. 28, 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		6 Months Ended
In Thousands, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013	Dec. 28, 2013
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'	'	'
Total revenue	$34,851	$32,409	$66,611	$58,222	'
Long-lived assets	7,654	'	7,654	'	4,389
United States	'	'	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'	'	'
Total revenue	24,665	25,698	47,791	42,555	'
Long-lived assets	7,454	'	7,454	'	4,203
Rest of Americas	'	'	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'	'	'
Total revenue	2,664	871	5,574	3,079	'
Europe, Middle East and Africa	'	'	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'	'	'
Total revenue	4,919	3,698	8,672	7,095	'
Asia Pacific	'	'	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'	'	'
Total revenue	2,603	2,142	4,574	5,493	'
Other	'	'	'	'	'
Segment Reporting Revenue Reconciling Item [Line Items]	'	'	'	'	'
Long-lived assets	$200	'	$200	'	$186