Care.com (CRCM) 10-K 27 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document (USD $)	12 Months Ended
	Dec. 27, 2014	Mar. 20, 2015	Jun. 28, 2014
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	27-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	CRCM
Entity Registrant Name	Care.com Inc
Entity Central Index Key	1412270
Current Fiscal Year End Date	-15
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		31,750,837
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$0

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 27, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$71,881	$29,959
Restricted cash	85	246
Accounts receivable (net of allowance of $0 and $56, respectively)	2,592	1,609
Unbilled accounts receivable	3,541	2,477
Prepaid expenses and other current assets	7,961	1,731
Total current assets	86,060	36,022
Property and equipment, net	6,323	1,553
Intangible assets, net	8,965	11,418
Goodwill	68,685	62,686
Other non-current assets	3,071	2,150
Total assets	173,104	113,829
Current liabilities:
Accounts payable	5,463	2,031
Accrued expenses and other current liabilities	12,732	7,023
Current contingent acquisition consideration	10,685	5,463
Deferred revenue	13,346	8,304
Total current liabilities	42,226	22,821
Contingent acquisition consideration	7,267	5,166
Deferred tax liability	2,119	1,112
Other non-current liabilities	3,442	785
Total liabilities	55,054	29,884
Commitment and contingencies (see note 6)
Redeemable convertible preferred stock $0.01 par value; 22,632; 21,299 shares issued and outstanding; aggregate liquidation value of $161,666 as of December 28, 2013	0	152,251
Stockholders' equity (deficit)
Preferred stock, $0.001 par value; 5,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value; 300,000 shares authorized; 31,615 and 3,197 shares issued and outstanding, respectively	32	3
Additional paid-in capital	277,583	9,311
Accumulated deficit	-159,859	-79,563
Accumulated other comprehensive income	294	1,943
Total stockholders' equity (deficit)	118,050	-68,306
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	$173,104	$113,829

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 27, 2014	Dec. 28, 2013
Allowance for accounts receivables	$0	$56,000
Preferred stock, par value, dollars per share	$0.00	$0.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value, in dollars per share	$0.00	$0.00
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	31,615,000	31,615,000
Common stock, shares outstanding	3,197,000	3,197,000
Redeemable convertible preferred stock
Redeemable convertible preferred stock, par value, dollars per share	$0.01	$0.01
Redeemable convertible preferred stock, shares authorized	0	22,632,000
Redeemable convertible preferred stock, shares issued	0	21,299,000
Redeemable convertible preferred stock, shares outstanding	0	21,299,000
Redeemable convertible preferred stock, liquidation preference	$0	$161,666,000

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Income Statement [Abstract]
Revenue	$116,713	$81,487	$48,493
Cost of revenue	30,345	18,844	10,210
Operating expenses:
Selling and marketing	75,817	55,250	35,916
Research and development	16,984	11,816	7,662
General and administrative	30,088	18,841	13,671
Depreciation and amortization	4,440	4,387	1,724
Impairment of goodwill and intangible assets	36,227	0	0
Total operating expenses	163,556	90,294	58,973
Operating loss	-77,188	-27,651	-20,690
Other expense, net	-3,856	-291	-47
Loss before income taxes	-81,044	-27,942	-20,737
Provision for income taxes	-752	354	-317
Net loss	-80,292	-28,296	-20,420
Accretion of preferred stock	-4	-57	-48
Net loss attributable to common stockholders	($80,296)	($28,353)	($20,468)
Net loss per share attributable to common stockholders:
Basic and diluted (in dollars per share)	($2.77)	($9.45)	($7.97)
Weighted-average shares used to compute net loss per share attributable to common stockholders:
Basic and diluted (in shares)	28,941	3,000	2,568

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net loss	($80,292)	($28,296)	($20,420)
Other comprehensive income:
Foreign currency translation adjustments	-1,649	806	1,137
Comprehensive loss	($81,941)	($27,490)	($19,283)

CONSOLIDATED_STATEMENTS_OF_RED

CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERSb (DEFICIT) EQUITY (USD $)	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Redeemable convertible preferred stock
In Thousands, except Share data, unless otherwise specified						Preferred Stock
Beginning balance at Dec. 31, 2011	($29,238)	$2	$1,502	($30,742)	$0	$61,078
Common stock, shares outstanding, beginning balance at Dec. 31, 2011		2,236,000
Preferred stock, shares outstanding, beginning balance at Dec. 31, 2011						13,962,000
Increase (Decrease) in Stockholders' Equity
Preferred stock financing						49,904
Preferred stock financing, shares						3,826,000
Preferred and Common stock issued in connection with acquisitions, shares		494,000				3,511,000
Preferred stock issued in connection with acquisitions	0					41,164
Exercises of stock options	253		253
Exercises of stock options, shares		152,000
Issuance of common stock in connection with acquisitions	2,922	1	2,921
Accretion of issuance costs	-48			-48		48
Stock-based compensation	1,952		1,952
Foreign currency translation adjustments	1,137				1,137
Issuance of preferred and common stock in connection with acquisitions	44,089
Net loss	-20,420			-20,420
Ending balance at Dec. 31, 2012	-43,442	3	6,628	-51,210	1,137	152,194
Common stock, shares outstanding, ending balance at Dec. 31, 2012		2,882,000
Preferred stock, shares outstanding, ending balance at Dec. 31, 2012						21,299,000
Increase (Decrease) in Stockholders' Equity
Exercises of stock options	821		821
Exercises of stock options, shares		315,000
Accretion of issuance costs	-57			-57		57
Stock-based compensation	1,862		1,862
Foreign currency translation adjustments	806				806
Issuance of preferred and common stock in connection with acquisitions	0
Net loss	-28,296			-28,296
Ending balance at Dec. 28, 2013	-68,306	3	9,311	-79,563	1,943	152,251
Common stock, shares outstanding, ending balance at Dec. 28, 2013	3,197,000	3,197,000
Preferred stock, shares outstanding, ending balance at Dec. 28, 2013	0					21,299,000
Increase (Decrease) in Stockholders' Equity
Preferred stock financing, shares		6,153,000
Preferred and Common stock issued in connection with acquisitions, shares		478,000				0
Exercises of stock options	994		994
Exercises of stock options, shares	220,000	220,000
Exercises of warrants, shares		76,000
Accretion of issuance costs	-4			-4
Contingent consideration payable in shares	4,878		4,878
Stock-based compensation	4,357		4,357
Foreign currency translation adjustments	-1,649				-1,649
Contingent consideration paid in preferred stock						2,626
Contingent consideration paid in preferred stock, shares						192,000
Conversion of preferred stock to common stock upon initial public offering	154,877	22	154,855			-154,877
Conversion of preferred stock to common stock upon initial public offering, shares		21,491,000				-21,491,000
Issuance of preferred and common stock in connection with acquisitions	5,969	1	5,968			0
Issuance of common stock in connection with initial public offering, net of offering costs	94,810	6	94,804
Reclassification of warrant liability to additional paid-in capital	968		968
Acceleration of Citrus Lane restricted stock awards	1,448		1,448
Net loss	-80,292			-80,292
Ending balance at Dec. 27, 2014	$118,050	$32	$277,583	($159,859)	$294	$0
Common stock, shares outstanding, ending balance at Dec. 27, 2014	3,197,000	31,615,000
Preferred stock, shares outstanding, ending balance at Dec. 27, 2014	0					0

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Cash flows from operating activities
Net loss	($80,292)	($28,296)	($20,420)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	5,805	1,862	1,952
Depreciation and amortization	5,401	6,702	2,440
Deferred taxes	-893	284	-345
Contingent consideration expense	900	1,342	239
Change in fair value of contingent consideration payable in preferred stock	2,258	0	0
Change in fair value of stock warrants	606	115	93
Impairment of goodwill and intangible assets	36,227	0	0
Other non-operating expenses	-89	0	0
Changes in operating assets and liabilities, net of effects from acquisitions:
Restricted cash	4	23	89
Accounts receivable	-892	-46	-473
Unbilled accounts receivable	-1,066	-458	-1,060
Prepaid expenses and other current assets	-432	-462	-584
Other non-current assets	353	-109	-208
Accounts payable	1,057	706	711
Accrued expenses and other current liabilities	2,479	2,870	339
Deferred revenue	3,422	2,821	1,907
Other non-current liabilities	868	-15	165
Net cash used in operating activities	-24,284	-12,661	-15,155
Cash flows from investing activities
Purchases of property and equipment	-3,038	-1,420	-413
Payments for acquisitions, net of cash acquired	-23,333	-398	-25,075
Cash withheld for purchase consideration	-73	0	-230
Payments for security deposits	-2,825	0	-142
Net cash used in investing activities	-29,269	-1,818	-25,860
Cash flows from financing activities
Net proceeds from issuance of common stock upon initial public offering	96,007	0	0
Proceeds from the issuance of common stock	787	821	253
Proceeds from the issuance of redeemable preferred stock	0	0	49,904
Payments for deferred offering costs	0	-1,074	0
Payments of contingent consideration previously established in purchase accounting	-2,209	0	0
Net cash provided by financing activities	94,585	-253	50,157
Effect of exchange rate changes on cash and cash equivalents	890	-85	-29
Net increase (decrease) in cash and cash equivalents	41,922	-14,817	9,113
Cash and cash equivalents, beginning of the period	29,959	44,776	35,663
Cash and cash equivalents, end of the period	71,881	29,959	44,776
Supplemental disclosure of cash flow activities
Cash paid for taxes	94	26	33
Supplemental disclosure of non-cash investing and financing activities
Non-cash purchases of property and equipment	2,575	0	0
Issuance of preferred and common stock in connection with acquisitions	5,969	0	44,089
Contingent acquisition consideration	0	0	9,049
Accretion of preferred stock to redemption value	4	57	48
Conversion of preferred stock to common stock	154,855	0	0
Reclassification of warrant liability to additional paid-in capital	968	0	0
Reclassification of contingent consideration payable in common shares	4,878	0	0
Unpaid deferred offering costs	$0	$479	$0

Organization_and_Description_o

Organization and Description of Business	12 Months Ended
	Dec. 27, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of Business
	Care.com, Inc. (the “Company”, “we”, “us”, and “our”), a Delaware corporation, was incorporated on October 27, 2006. We are the world’s largest online marketplace for finding and managing family care. Our consumer matching solutions enable families to connect to caregivers and caregiving services in a reliable and easy way and our payment solutions enable families to pay caregivers electronically online or via their mobile device and to manage their household payroll and tax matters with Care.com HomePay. In addition, we serve employers by providing access to our platform to employer-sponsored families and care-related businesses-such as day care centers, nanny agencies and home care agencies-who wish to market their services to our care-seeking families and recruit our caregiver members. We also operate a social e-commerce service selling curated products designed for families. This service generates revenue through the sale of subscriptions and other products to customers in the United States.
	Certain Significant Risks and Uncertainties
	We operate in a dynamic industry and, accordingly, our business is affected by a variety of factors. For example, we believe that changes in any of the following areas could have a significant negative effect on our future financial position, results of operations or cash flows: rates of revenue growth; access to capital at acceptable terms; engagement and usage of our products; scaling and adaptation of existing technology and network infrastructure; competition in our market; management of our growth; acquisitions and investments; qualified employees and key personnel; protection of our brand and intellectual property; protection of customers’ information and privacy concerns; and security measures related to our website, among other things.

Summary_of_Significant_Account

Summary of Significant Accounting Policies Summary of Significant Accounting Policies	12 Months Ended
	Dec. 27, 2014
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies
	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of the Company and our wholly owned subsidiaries, after elimination of all intercompany balances and transactions. We have prepared the accompanying financial statements in conformity with generally accepted accounting principles in the United States of America (“U.S. GAAP”).
	Fiscal Year-End
	For periods prior to Fiscal 2013, we operated and reported on a calendar basis fiscal year. Beginning in the third quarter of Fiscal 2013, we operate and report using a 52 or 53 week fiscal year ending on the Saturday in December closest and prior to December 31. Accordingly, our fiscal quarters end on the Saturday that falls closest to the last day of the third month of each quarter.
	Use of Estimates
	The preparation of our consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those related to accounts receivable and revenue allowances, intangible asset valuations, expected future cash flows used to evaluate the recoverability of long-lived assets, the useful lives of long-lived assets including property and equipment and intangible assets, valuation of common and preferred stock and warrants to purchase preferred stock, fair value of stock-based awards, goodwill, income taxes, contingent consideration, and contingencies. We base our estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. These estimates are based on information available as of the date of the consolidated financial statements; therefore, actual results could differ from the estimates.
	Revenue Recognition
	In general, we recognize revenue when (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred or services have been rendered to the customer, (iii) the fee is fixed or determinable, and (iv) collectability is reasonably assured. We derive our revenue primarily from on-going subscription fees. Revenue from subscription fees is recognized on a daily basis over the subscription term or on a pro-rata basis as the services are delivered. Revenue from background checks, lead generation and advertising is recognized in the period earned. For product sales, these criteria are deemed to have been met when the items are delivered to the end customer. Other service revenues are recognized as the services are performed. Shipping and handling charges are included in revenue on a gross basis. Taxes that are collected from customers and remitted to government authorities are presented on a net basis and are excluded from revenue.
	Certain of our arrangements provide companies the opportunity to purchase Care.com services on behalf of their employees. These arrangements typically include a subscription to our consumer matching solutions for their employees. These arrangements are accounted for as multiple element arrangements. We have concluded that each element in the arrangement has stand-alone value as the individual services can be sold separately. In addition, there is no right of refund once a service has been delivered. Therefore, we have concluded each element of the arrangement is a separate unit of accounting. In accordance with authoritative guidance on revenue recognition, we allocate consideration at the inception of an arrangement to each unit of accounting based on the relative selling price method in accordance with the selling price hierarchy. The objective of the hierarchy is to determine the price at which we would transact a sale if the service were sold on a stand-alone basis, and requires the use of: (1) vendor-specific objective evidence (‘‘VSOE’’), if available; (2) third-party evidence (‘‘TPE’’), if VSOE is not available; and (3) best estimate of selling price (‘‘BESP’’), if neither VSOE nor TPE is available. Since VSOE or TPE are not typically available, BESP is generally used to allocate the selling price to each unit of accounting. We determine BESP for units of account by considering multiple factors including, but not limited to, prices we charge for similar offerings, sales volumes, geographies and other factors contemplated in negotiating multiple element transactions.
	Concentrations of Credit Risk
	Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of cash and cash equivalents and accounts receivable. We place our cash and cash equivalents with major financial institutions throughout the world that management assesses to be of high-credit quality in order to limit exposure of each investment. As of December 27, 2014 and December 28, 2013, substantially all of our cash had been invested in money market funds.
	Credit risk with respect to accounts receivable is dispersed due to the large number of customers. During the year ended December 27, 2014, one customer accounted for 15% of total accounts receivable and no customer accounted for more than 10% of total revenue. During the year ended December 28, 2013 no single customer accounted for more than 10% of total accounts receivable or revenue. In addition, our credit risk is mitigated by a relatively short collection period. Collateral is not required for accounts receivable. We record our accounts receivable in our consolidated balance sheets at net realizable value. We perform on-going credit evaluations of our customers and maintain allowances for potential credit losses, based on management’s best estimates. Amounts determined to be uncollectible are written off against this reserve.
	Foreign Currency Translation
	We determine the functional currency for our foreign subsidiaries by reviewing the currencies in which their respective operating activities occur. Financial information is translated from the functional currency to the U.S. dollar, the reporting currency, for inclusion in our consolidated financial statements. Income, expenses, and cash flows are translated at average exchange rates prevailing during each month of the fiscal year, and assets and liabilities are translated at fiscal period end exchange rates. Foreign exchange transaction gains and losses are included in other expense, net in the accompanying consolidated statements of operations. The effects of foreign currency translation adjustments are included as a component of accumulated other comprehensive income in the accompanying consolidated balance sheets. For the years ended December 27, 2014, December 28, 2013 and December 31, 2012, we recorded foreign currency transaction losses of approximately $1.0 million, $0.1 million and $0.1 million, respectively, included in other expense, net in the accompanying consolidated statements of operations.
	Cash Equivalents
	We consider highly liquid investments purchased with an original maturity of 90 days or less at the time of purchase to be cash equivalents. As of December 27, 2014 and December 28, 2013, cash equivalents consisted of money market funds.
	Restricted Cash
	Restricted cash relates primarily to monies held in escrow to settle contractual obligations and funds received from families that are due to their clients’ respective providers or the taxing authorities, but have not yet been remitted. Amounts received from families that are held by us until disbursement to their providers and taxing authorities are restricted as to usage because we are obligated to forward such funds to the recipients on behalf of our paying families. As of December 27, 2014, restricted cash is classified within current assets in the accompanying consolidated balance sheets because such amounts are scheduled to be remitted within the twelve months following the balance sheet date.
	Deferred Revenue
	Deferred revenue primarily consists of payments received in advance of revenue recognition of the services described above, and is recognized as the revenue recognition criteria are met. Our customers pay for most services in advance on a monthly, quarterly or annual basis. Amounts expected to be recognized within the twelve months following the balance sheet date are classified within current liabilities in the accompanying consolidated balance sheets.
	Unbilled Receivables
	Unbilled receivables consist of amounts earned upon satisfying the revenue recognition criteria in advance of billing. Subscribers to our Care.com HomePay solution are billed quarterly in arrears at the beginning of the subsequent calendar quarter to which the services related.
	Cost of Revenue
	Cost of revenue primarily consists of expenses that are directly related, or closely correlated, to revenue generation, including matching and payments member variable servicing costs such as personnel costs for customer support, transaction fees related to credit card payments and the cost of background checks run on both families and caregivers. Additionally, cost of revenue includes website hosting fees and amortization expense related to caregiver relationships, proprietary software acquired as part of acquisitions and website intangible assets. In addition, we have product fulfillment costs, largely consisting of product, shipping and costs associated with our third party fulfillment providers.
	Recurring Fair Value Measurement
	Accounting Standards Codification (“ASC”) 820, Fair Value Measurements and Disclosures, establishes a three-level valuation hierarchy for disclosure of fair value measurements. The categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the measurement of fair value. The three levels of the hierarchy are defined as follows:
	•	Level 1 inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.
	•	Level 2 inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.), or inputs that are derived principally from or corroborated by market data by correlation or other means.
	•	Level 3 inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.
	Recurring Fair Value Measurements
	Assets
	Cash equivalents - Cash equivalents include money market mutual funds with original maturities of three months or less. The fair value measurement of these assets is based on quoted market prices in active markets for identical assets and, therefore, these assets are recorded at fair value on a recurring basis and classified as Level 1 in the fair value hierarchy.
	Liabilities
	Contingent Acquisition Consideration - Contingent acquisition consideration includes the fair value of contingent consideration paid by us in connection with corporate acquisitions based on the likelihood of issuing preferred and common stock and paying cash related to certain revenue and other milestones. We recorded our estimate of the fair value of this contingent consideration based on the evaluation of the likelihood of the achievement of the contractual conditions that would result in the payment of the contingent consideration and weighted probability assumptions of these outcomes. The fair value of the liability was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820, Fair Value Measurements and Disclosures.
	For contingent consideration payable in preferred stock, we used a valuation of the company based on both an income and market approach to determine the fair value of the preferred stock as of the acquisition date and on an-ongoing basis. Upon the closing of our initial public offering (“IPO”) in January 2014, the contingent consideration payable in preferred stock was automatically converted to the right to receive common stock at the then-applicable conversion rate. Contingent consideration payable in preferred stock was written up to fair value as of the closing date of the IPO and was reclassified to permanent equity and will no longer be marked-to-market. There have been no changes in the probability of the earn-out payment through December 27, 2014.
	The cash portion of the contingent consideration liability has been discounted to reflect the time value of money, and therefore, as the milestone date approaches, the fair value of this liability will increase. This increase in fair value was recorded in general and administrative expenses in the accompanying consolidated statements of operations. The preferred stock portion of the contingent consideration represented a liability in accordance with ASC 480-10, Distinguishing Liabilities from Equity, and was marked-to-market each reporting period with changes in market value recognized in other expense, net in the accompanying consolidated statements of operations.
	During the year-ended December 28, 2013 we reassessed the probability of achievement on the Care Concierge, Inc. contingent acquisition cash payment based on the achievement of certain revenue milestones and the probability of reaching both the 2013 and 2014 milestones, which resulted in $0.6 million of incremental expense. No incremental expense was recorded in the year ended December 27, 2014. During the year ended December 27, 2014, in connection with our acquisition of Citrus Lane, Inc. (“Citrus Lane”), we recognized acquisition consideration payable in cash and shares totaling $17.5 million. The probability of achievement of this earn-out is assessed at 100%.
	The significant inputs in the Level 3 measurement not supported by market activity included our probability assessments of expected future cash flows related to our acquisition of Breedlove & Associates, LLC, Care Concierge, Inc. and Citrus Lane during the applicable earn-out period, appropriately discounted considering the uncertainties associated with the applicable obligation, and calculated in accordance with the terms of the applicable transaction agreement. As such, the cash portion of the contingent consideration liability has been discounted to reflect the time value of money, and therefore, as the milestone date approaches, the fair value of this liability will increase.
	Preferred Stock Warrants - Preferred stock warrants consist of warrants issued in connection with debt financings. The fair value of the warrants was determined using the Black-Scholes option-pricing model. In conjunction with the closing of the IPO, the warrant exercisable for shares of our Series A-1 Preferred Stock was automatically converted into a warrant exercisable for shares of our common stock, resulting in the reclassification of the related convertible preferred stock warrant liability to additional paid-in capital as the warrant met the criteria for equity classification upon its conversion to a warrant for the purchase of common stock. The warrant liability was re-measured to fair value prior to reclassification to additional paid-in capital. As of December 27, 2014, we had no outstanding warrant liability. Refer to Note 7 - Stockholders’ Equity (Deficit) for a discussion of the methodology used and changes in the fair value of our preferred stock warrants.
	The following table presents information about our assets and liabilities measured at fair value on a recurring basis as of December 27, 2014 and December 28, 2013 and indicates the fair value hierarchy of the valuation techniques we utilized to determine such fair value (in thousands):
		December 27, 2014										December 28, 2013
		Fair Value Measurements Using Input Types										Fair Value Measurements Using Input Types
		Level 1			Level 2			Level 3		Total		Level 1		Level 2		Level 3		Total
	Assets:
	Money market mutual funds and certificates of deposit	$	15,656		$	—		$	—	$	15,656	$	15,085	$	—	$	—	$	15,085
	Total assets	$	15,656		$	—		$	—	$	15,656	$	15,085	$	—	$	—	$	15,085
	Liabilities:
	Contingent acquisition consideration	$	—		$	—		$	17,952	$	17,952	$	—	$	—	$	10,630	$	10,630
	Preferred stock warrants	—			—			—		—		—		—		362		362
	Total liabilities	$	—		$	—		$	17,952	$	17,952	$	—	$	—	$	10,992	$	10,992
	The following table sets forth a summary of changes in the fair value of our contingent acquisition consideration and preferred stock warrants which represent recurring measurements that are classified within Level 3 of the fair value hierarchy wherein fair value is estimated using significant unobservable inputs (in thousands):
		December 27, 2014						December 28, 2013
		Contingent Acquisition			Preferred Stock Warrants			Contingent Acquisition		Preferred Stock Warrants
		Consideration						Consideration
	Beginning balance	$	10,630		$	362		$	9,288	$	247
	Contingent consideration liability recorded in connection with Citrus Lane acquisition	14,510			—			—		—
	Increase in fair value included in earnings	3,158			606			1,342		115
	Reclassification to permanent equity	(4,878		)	(968		)	—		—
	Contingent acquisition consideration payments	(5,468		)	—			—		—
	Ending balance	$	17,952		$	—		$	10,630	$	362
	Non-Recurring Fair Value Measurements
	We remeasure the fair value of certain assets and liabilities upon the occurrence of certain events. Such assets are comprised of long-lived assets, including property and equipment, intangible assets and goodwill. For fiscal year ended December 27, 2014, we recorded an intangible asset impairment charge of $2.4 million and a goodwill impairment charge of $33.8 million, each related to our Citrus Lane reporting unit. This adjustment falls within Level 3 of the fair value hierarchy due to the use of significant unobservable inputs to determine fair value. The fair value measurements were determined using a DCF analysis, and the amount and timing of future cash flows within the analysis were based on our most recent operational budgets, long-range strategic plans and other estimates at the time such re-measurements were made. No remeasurement of such assets occurred at December 28, 2013 or December 31, 2012. Other financial instruments not measured or recorded at fair value in the accompanying consolidated balance sheets principally consist of accounts receivable, accounts payable, and accrued liabilities. The estimated fair values of these instruments approximate their carrying values due to their short-term nature.
	Business Combinations
We determine and allocate the purchase price of an acquired company to the tangible and intangible assets acquired and liabilities assumed based on their fair values as of the business combination date, including identifiable intangible assets, which either arise from a contractual or legal right or are separable from goodwill. We base the fair value of identifiable intangible assets acquired in a business combination on detailed valuations that use information and assumptions provided by management, which consider management’s best estimates of inputs and assumptions that a market participant would use. We allocate any excess purchase price over the fair value of the net tangible and identifiable intangible assets acquired to goodwill. The use of alternative valuation assumptions, including estimated revenue projections, growth rates, cash flows, discount rates, estimated useful lives and probabilities surrounding the achievement of revenue-based milestones, could result in different purchase price allocations and amortization expense in current and future periods. Transaction costs associated with these acquisitions are expensed as incurred through general and administrative costs.
In those circumstances where an acquisition involves a contingent consideration arrangement, we recognize a liability equal to the fair value of the contingent payments we expect to make as of the acquisition date. We re-measure this liability at each reporting period and record changes in the fair value as a component of operating expenses. Increases or decreases in the fair value of the contingent consideration liability can result from changes in discount periods and rates, as well as changes in the timing and amount of revenue estimates or in the timing or likelihood of achieving revenue-based milestones.
Results of operations and cash flows of acquired companies are included in our operating results from the date of acquisition.
Software Development Costs
Internal and external software development costs associated with the development of software for internal use are expensed to research and development during the preliminary project stage and capitalized during the application development stage. For fiscal year ended December 27, 2014, costs incurred during application development stage and capitalized totaled $0.9 million. During fiscal years ended December 28, 2013 and December 31, 2012, we believe the substantial majority of our development efforts were either in the preliminary stage of development or were for maintenance of, and minor upgrades and enhancements to internal-use software and, accordingly, application development costs were insignificant.
Equity Method Investment
During fiscal 2012, we made a 50% investment in Care International Exchange, Inc. (the “Venture”), a venture formed with Magsaysay People Resources Corporation (‘‘Magsaysay’’). The purpose of the Venture is to conduct activities related to a live-in care program with the goal of generating revenue from the placement of foreign-born providers with families, institutions or individuals seeking live-in home care throughout Canada. Our initial investment in the Venture was $50,000, and we and Magsaysay each have a commitment to provide an additional $0.4 million of funding over the next two years. We account for our investment in the Venture using the equity method of accounting based on our voting interest as we have significant influence over the Venture. Accordingly, our share of the income or loss of the Venture is recorded in other income or expense in the accompanying consolidated statements of operations. To date, the operations of the Venture have not been significant.
Goodwill
Goodwill is recorded as the difference, if any, between the aggregate consideration paid for an acquisition and the fair value of the net tangible and intangible assets acquired. We evaluate goodwill and indefinite lived intangible assets for impairment at the reporting unit level (operating segment or one level below an operating segment) annually or more frequently if we believe indicators of impairment exist. In accordance with the guidance, we are permitted to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If we conclude that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then a two-step goodwill impairment test is performed.
In performing the test, we utilize the two-step approach prescribed under ASC 350. The first step requires a comparison of the reporting unit against its aggregate carrying value, including goodwill. If the carrying amount exceeds the reporting unit’s carrying value to its fair value. We consider a number of factors to determine the fair value of a reporting unit, including an independent valuation to conduct this test. The valuation is based upon expected future discounted operating cash flows of the reporting unit. We base the discount rate on the weighted average cost of capital, or WACC, of market participants. If the carrying value of a reporting unit exceeds its estimated fair value, we will perform the second step of the goodwill impairment test to measure the amount of impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of a reporting unit’s goodwill to its carrying value. The second step requires us to perform a hypothetical purchase allocation as of the measurement date and estimate the fair value of net tangible and intangible assets. The fair value of intangible assets is determined as described below and is subject to significant judgment.
Since the fair value of our reporting units was determined by use of the discounted cash flows, or DCF, and the key assumptions that drive the fair value in this model are the WACC, terminal values, growth rates, and the amount and timing of expected future cash flows, significant judgment is applied in determining fair value. If the current economic environment were to deteriorate, this would likely result in a higher WACC because market participants would require a higher rate of return. In the DCF as the WACC increases, the fair value decreases. The other significant factor in the DCF is our projected financial information (i.e., amount and timing of expected future cash flows and growth rates) and if these assumptions were to be adversely impacted, this could result in a reduction of the fair value of this reporting unit.
We conducted our fiscal 2014 annual impairment test as of September 28, 2014 (the first day of our fourth fiscal quarter). We utilized DCF and market approaches to estimate the fair value of our reporting units as of September 28, 2014 and ultimately used the fair value determined by the DCF in making our impairment test conclusions. We believe we used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. Because Citrus Lane was recently acquired and was operating reasonably close to expectations, we performed a qualitative screen for impairment of that reporting unit as is allowed under ASC 350. As a result of completing Step 1, all of the reporting units had fair values exceeding their carrying values, and as such, Step 2 of impairment test was not required for those reporting units.
During the fourth quarter of fiscal 2014, primarily as a result of unexpected changes, both internal and external, we determined that indicators of impairment existed at our Citrus Lane Reporting Unit. The fair value of reporting unit was deemed to be below its carrying value and Step 2 of the goodwill impairment test was performed. Step 2 of the goodwill impairment test requires the completion of a hypothetical purchase price allocation to determine the fair value of the implied goodwill. Upon completion of the Step 2 analysis, we determined that the Citrus Lane goodwill was impaired and recorded a $33.8 million impairment expense.
Amortization and Impairment of Intangible Assets
We amortize our intangible assets that have finite lives over their estimated useful lives. We use a straight-line method of amortization, unless a method that better reflects the pattern in which the economic benefits of the intangible asset are consumed or otherwise used up can be reliably determined. Amortization is recorded over the estimated useful lives ranging from one to ten years. We review our intangible assets subject to amortization to determine if any adverse conditions exist, or a change in circumstances has occurred that would indicate impairment or a change in the remaining useful life. If the carrying value of an asset exceeds its undiscounted cash flows, we will write-down the carrying value of the intangible asset, or asset group, to its fair value in the period identified. In assessing fair value, we must make assumptions regarding estimated future cash flows and discount rates. If these estimates or related assumptions change in the future, we may be required to record impairment charges. We generally calculate fair value as the present value of estimated future cash flows to be generated by the asset using a risk-adjusted discount rate. If the estimate of an intangible asset’s remaining useful life is changed, we will amortize the remaining carrying value of the intangible asset prospectively over the revised remaining useful life.
During the fourth quarter of fiscal 2014, in connection with our goodwill impairment analysis, we performed a Step 2 test of recoverability of finite lived intangibles in accordance with ASC 360, indicating that our undiscounted future cash flows would not recover the carrying value of the Citrus Lane proprietary software and trade name intangible assets. We then performed a Step 3 impairment analysis of finite lived intangible assets under ASC 360 and determined that the carrying value of the Citrus Lane proprietary software and trade name exceeded the fair value of those assets as of the end of the fourth quarter and recognized an intangible asset impairment of $2.4 million.
During the fourth quarter of fiscal 2012, we made the decision to replace the Care.com Europe proprietary software with a new, worldwide, international platform that was to be developed. As a result of this decision we tested the associated asset group for recoverability and concluded that an indicator of impairment did not exist. However, in connection with the decision to migrate the existing technology platform to the new worldwide platform, we concluded the useful life of the technology platform should be reassessed. We revised the useful life to be one year to coincide with our migration plan.
During the third quarter of fiscal 2013, we made the decision to migrate the PIAP trade name to Care Concierge. As a result of this decision we tested the associated asset group for recoverability and concluded that an indicator of impairment did not exist. However, in connection with the decision to migrate to the new trade name, we concluded the useful life of the PIAP trade name should be reassessed. We revised the useful life to be four months to coincide with our migration plan.
Property and Equipment
Property and equipment are stated at cost, and are depreciated using the straight-line method over the estimated useful life of the assets or, where applicable and if shorter, over the lease term. The following table presents the detail of property and equipment, net for the periods presented (in thousands):
	December 27,			December 28,
	2014			2013
Computer equipment	$	2,476		$	1,444
Furniture and fixtures	1,708			1,154
Software	1,066			199
Leasehold improvements	3,137			183
Total	8,387			2,980
Less accumulated depreciation	(2,064		)	(1,427		)
Property and equipment, net	$	6,323		$	1,553
Property and equipment are depreciated over the following estimated useful lives:
	Estimated Useful Life
Computer equipment	3 years
Leasehold improvements	Lesser of asset life or lease term
Furniture and fixtures	3 years
Software	3 years
Depreciation expense for the years ended December 27, 2014, December 28, 2013 and December 31, 2012 was $0.9 million, $0.7 million and $0.3 million, respectively.
Expenditures for maintenance and repairs are charged to expense as incurred, whereas major betterments are capitalized as additions to property and equipment.
In accordance with ASC 360-10-35-15, Property, Plant and Equipment—Impairment or Disposal of Long-Lived Assets, we review the carrying value of long-lived assets whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, then an impairment charge is recognized for the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or the fair value less costs to sell, and are not depreciated. Assets and liabilities that are part of a disposal group and classified as held for sale would be presented separately in the appropriate asset and liability sections of the balance sheet. We have not recognized any impairment losses during the years ended December 27, 2014, December 28, 2013 and December 31, 2012, with respect to property, plant and equipment.
Income Taxes
We account for income taxes in accordance with ASC 740, Income Taxes. ASC 740 is an asset and liability approach that requires recognition of deferred tax assets and liabilities for the expected future tax consequences attributable to differences between the carrying amounts of assets and liabilities for financial reporting purposes and their respective tax basis, and for operating loss and tax credit carryforwards. ASC 740 requires a valuation allowance against net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.
We recognize the tax benefit from an uncertain tax position only if it is more likely than not the tax position will be sustained on examination by the tax authorities, based on the technical merits of the position. The tax benefits recognized in the consolidated financial statements from such position are then measured based on the largest benefit that has a greater than 50% likelihood of being realized upon settlement. At December 27, 2014 and December 28, 2013, we did not have any uncertain tax positions.
Presentation of Taxes in the Consolidated Statements of Operations
We present taxes that are collected from customers and remitted to government authorities on a net basis in the consolidated statements of operations.
Stock-Based Compensation
We account for all stock-based awards to employees and members of our board of directors, to the extent such awards were issued in connection with their services as directors, in accordance with ASC 718, Compensation-Stock Compensation. ASC 718 requires that all share-based payments, including grants of stock options, be recognized in the statement of operations as an operating expense based on their fair value. In accordance with ASC 718, we recognize the compensation cost of share-based awards on a straight-line basis over the vesting period of the award.
We use the Black-Scholes-Merton option-pricing model to determine the fair value for option awards. In valuing our option awards, we make assumptions about risk-free interest rates, dividend yields, volatility, and weighted-average expected lives, including estimated forfeiture rates. Risk-free interest rates are derived from U.S. Treasury securities as of the option award grant date. Expected dividend yield is based on our historical dividend payments, which have been zero to date. The expected volatility for our common stock is estimated taking the average historic price volatility for a group of similarly situated publicly traded companies based on daily price observations over a period equivalent to the expected term of the stock option grants. These publicly traded companies were selected based on comparable characteristics to us and consist of several companies in the technology industry that are similar in enterprise value, stage of life cycle, risk profile, financial leverage and with historical share price information sufficient to meet the expected life of our stock-based awards. We estimate the weighted-average expected life of the option awards as the average of the option vesting schedule and the term of the award, since we do not have sufficient historical exercise data to provide a reasonable basis upon which to estimate expected term due to the limited period of time share-based awards have been exercisable. The term of the award is estimated using the simplified method, as awards are plain vanilla option awards. Forfeiture rates are estimated using historical actual forfeiture trends as well as our judgment of future forfeitures. These rates are evaluated at least quarterly and any change in compensation expense is recognized in the period of the change. The estimation of option awards that will ultimately vest requires judgment, and to the extent actual results or updated estimates differ from our current estimates, such amounts will be recorded as a cumulative adjustment in the period the estimates are revised. Actual results, and future changes in estimates, may differ substantially from management’s current estimates.
Stock-based awards issued to non-employees, are accounted for using the fair value method in accordance with ASC 505-50, Equity-Based Payments to Non-Employees. These stock options are typically granted in exchange for consulting services to be rendered, and vest over periods of up to four years. In accordance with authoritative guidance, the fair value of non-employee stock-based awards is estimated on the date of grant, and subsequently revalued at each reporting period over their vesting period using the Black-Scholes option-pricing model.
Advertising Costs
We expense advertising costs as incurred when the advertisement is run. We incurred advertising expenses of $30.5 million, $22.3 million and $14.3 million for the years ended December 27, 2014, December 28, 2013 and December 31, 2012, respectively, which was included in the accompanying consolidated statements of operations as a component of selling and marketing expense.
Accumulated Other Comprehensive Income
As of December 27, 2014 and December 28, 2013, accumulated other comprehensive income was comprised solely of cumulative foreign currency translation adjustments.
Recently Issued and Adopted Accounting Pronouncements
In January 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2015-01, Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items ("ASU 2015-01”), which eliminates the requirement of Extraordinary Items to be separately classified on the income statement.  ASU 2015-01 is effective for annual periods ending after December 15, 2015 and for annual and interim periods thereafter.  Early application is permitted.  The adoption of ASU 2015-01 is not expected to have a material effect on our condensed consolidated financial statements or disclosures.
In August 2014, the FASB issued Accounting Standards Update No. 2014-15, Presentation of Financial Statements - Going Concern (“ASU 2014-15”), which requires management to evaluate, at each annual and interim reporting period, whether there are conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date the financial statements are issued and provide related disclosures.  ASU 2014-15 is effective for annual periods ending after December 15, 2016 and interim periods thereafter.  Early application is permitted.  The adoption of ASU 2014-15 is not expected to have a material effect on our condensed consolidated financial statements or disclosures.
In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for us in our fiscal year 2018. Early application is not permitted. We are evaluating the effect that ASU 2014-09 will have on our consolidated financial statements and related disclosures. The standard permits the use of either the retrospective or cumulative effect transition method. We have not yet selected a transition method nor have we determined the effect of the standard on our ongoing financial reporting.
In April 2014, the FASB issued ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), to reduce diversity in practice for reporting discontinued operations. Under the previous guidance, any component of an entity that was a reportable segment, an operating segment, a reporting unit, a subsidiary, or an asset group was eligible for discontinued operations presentation. The revised guidance only allows disposals of components of an entity that represent a strategic shift (e.g., disposal of a major geographical area, a major line of business, a major equity method investment, or other major parts of an entity) and that have a major effect on a reporting entity’s operations and financial results to be reported as discontinued operations. The revised guidance also requires expanded disclosure in the financial statements for discontinued operations as well as for disposals of significant components of an entity that do not qualify for discontinued operations presentation. The updated guidance is effective for periods beginning after December 15, 2014. We currently do not have operations that are reported as discontinued operations and do not expect the adoption of this guidance to have a material effect on our financial position, results of operations, or cash flows.
In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carry forward, a Similar Tax Loss, or a Tax Credit Carry forward Exists (“ASU 2013-11”). ASU 2013-11 states that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carry forward, a similar tax loss, or a tax credit carry forward, except in certain situations. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption and retrospective application are permitted. The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. The adoption of this amendment did not have a material impact on our condensed consolidated financial statements.

Business_Acquisitions

Business Acquisitions	12 Months Ended
	Dec. 27, 2014
Business Combinations [Abstract]
Business Acquisitions	Business Acquisitions
	Citrus Lane
	On July 17, 2014, we acquired Citrus Lane, a social e-commerce service selling curated products designed for families for a total consideration of $22.9 million in cash and 0.4 million shares of common stock (valued at $3.8 million). In addition, up to $16.4 million in cash (valued at $14.5 million) and up to an additional 0.1 million shares of common stock (valued at $1.1 million) will be payable in the event Citrus Lane achieves certain milestones in 2015 and 2016.
	As part of the transaction, we also exchanged both vested and unvested options to purchase Citrus Lane common stock for options to purchase Care.com common stock at an exchange ratio implied by the value of the merger consideration received by the holders of outstanding Citrus Lane shares (valued at $1.0 million). In connection with this acquisition, we incurred approximately $1.8 million in direct acquisition costs which were expensed as incurred and are included in general and administrative expense in our consolidated statements of operations. Of the initial consideration value, $5.0 million was placed in an escrow account to secure indemnification obligations contained in the purchase agreement.
	We recorded our estimate of the fair value of this contingent consideration based on the evaluation of the likelihood of the achievement of the contractual conditions that would result in the payment of the contingent consideration and weighted probability assumptions of these outcomes. The fair value of the liability was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820, Fair Value Measurements and Disclosures. The significant inputs in the Level 3 measurement not supported by market activity included our probability assessments of expected future cash flows related to our acquisition of Citrus Lane during the earn-out period, appropriately discounted considering the uncertainties associated with the obligation, and calculated in accordance with the terms of the merger agreement. There have been no changes in the probability of the earn-out payment through December 27, 2014. The cash portion of the contingent consideration liability has been discounted to reflect the time value of money, and therefore, as the milestone dates approach, the fair value of this liability will increase. This increase in fair value was recorded in general and administrative expenses in the accompanying consolidated statements of operations. The results of operations for Citrus Lane have been included in our consolidated financial statements since the date of acquisition. For the period from the date of acquisition to December 27, 2014, revenue and net loss for Citrus Lane totaled $6.0 million and $42.9 million, respectively.
	Identifiable Intangible Assets
	As part of the preliminary purchase price allocation, we determined that Citrus Lane's primary separately identifiable intangible assets were its proprietary software and trade name. We used a hybrid approach to value the proprietary software. This approach incorporates elements of the income and cost approaches, specifically the lost profits and replacement cost methods. We used a relief from royalty method to value the trade name. This method assumes that a willing buyer would pay a royalty for the use of an asset, rather than incurring the costs associated with internally developing an asset of identical utility. The fair value is calculated by taking the present value of avoided after-tax cash flows discounted back to a present value. The baseline data for this analysis was the cash flow estimates used to price the transaction. Cash flows were forecasted for each intangible asset then discounted based on an appropriate discount rate. The 22.5% discount rate applied was benchmarked with reference to the implied rate of return from the transaction model, as well as an estimate of a market participant's weighted-average cost of capital based on the capital asset pricing model.
	In estimating the useful life of the acquired assets, we considered ASC 350-30-35, Intangibles-Goodwill and Other, and reviewed the following: the expected use by the combined company of the assets acquired, the expected useful life of another asset (or group of assets) related to the acquired assets, legal, regulatory or other contractual provisions that may limit the useful life of an acquired asset or may enable the extension of the useful life of an acquired asset without substantial cost, the effects of obsolescence, demand, competition and other economic factors, and the level of maintenance expenditures required to obtain the expected future cash flows from the asset.
	We amortize these intangible assets over their estimated useful lives using a method that is based on estimated future cash flows, as we believe this will approximate the pattern in which the economic benefits of the assets will be utilized, or where we have concluded that the cash flows were not reliably determinable, on a straight-line basis.
	Preliminary Allocation of Purchase Price
	The acquisition has been accounted for as a business combination under FASB ASC Topic 805, Business Combinations (“ASC 805”). The purchase price has been assigned to the assets acquired and liabilities assumed based on their estimated fair values. As of July 17, 2014, we recognized $41.8 million of goodwill. A summary of the preliminary purchase price allocation for the acquisition of Citrus Lane is as follows (in thousands):
	Total purchase consideration
	Cash	$	22,881
	Fair value of common stock	3,844
	Fair value of contingent acquisition consideration	15,600
	Fair value of stock options exchanged	1,026
	Total purchase price	$	43,351
	Allocation of the purchase consideration
	Tangible assets	$	2,865
	Liabilities assumed	(4,098		)
	Identifiable intangible assets	4,600
	Deferred tax liabilities	(1,855		)
	Goodwill	41,839
	Total purchase price allocation	$	43,351
	The fair value of the stock options exchanged and recorded as purchase price represents the fair value of the Citrus Lane options converted into options to purchase our common stock attributable to pre-combination services pursuant to ASC 805, Business Combinations. The remainder of the fair value of these options of $1.4 million will be recognized as stock-based compensation expense over the remaining vesting period, which is approximately 2.6 years. We estimated fair value of the stock options using a binomial valuation model with the following weighted average assumptions: risk free rate of 1.8%, expected volatility of 49.4%, expected life of 5.4 years and dividend of 0.0%. The weighted average fair value of stock options granted is $9.34 per share. We also recorded stock-based compensation expense of approximately $1.4 million related to the acceleration of vesting of certain equity awards assumed as part of the Citrus Lane acquisition.
	The estimated fair values for specifically identifiable intangible assets acquired are as follows (in thousands):
						Weighted-average amortization period
						(in years)
	Proprietary software	$	3,000			7
	Trade-names	1,600				10
	Total purchase price	$	4,600
	The sellers are also entitled to additional contingent consideration (“Earn-Out”) based upon the performance of the business acquired during a two year period spanning from July 17, 2014 through July 17, 2016. This consideration is based on the ability to introduce new product offerings or product options to Citrus Lane customers. In the event the Earn-Out targets are achieved, we will make payments of $8.2 million in each of the periods ended September 26, 2015 and September 24, 2016, respectively. The estimated fair value of the contingent consideration was determined to be $15.2 million at the acquisition date and was initially recorded in current and non-current contingent acquisition consideration on our consolidated balance sheet. There is also a component of the contingent consideration payable in common stock, which is based on a fixed number of shares on each of the periods ended September 26, 2015 and September 24, 2016, and has been recorded as permanent equity in purchase accounting using the acquisition date stock price part of our purchase accounting. We determined the future estimated fair value for the contingent consideration by applying a present value calculation of probable earn-out payments using an appropriate discount rate for us. We recorded charges of $0.6 million due to the accretion of changes in the valuation of contingent consideration, reported in general and administrative expenses. In addition, certain former employees of Citrus Lane may receive two annual contingent payments (subject to adjustment) not to exceed $1.4 million (the “Employee Bonus Pool”). A portion of the Employee Bonus Pool, $0.3 million, is based on the achievement of the Earn-Out targets noted earlier as well as the individual remaining employed by Care.com. The remaining $1.1 million is based solely on the individuals remaining employed by Care.com. Each is payable after the first and second anniversaries, from the date of acquisition, provided the individuals remain employed by Care.com on such dates. In case of separation, the Employee Bonus Pool attributable to the terminated employee is reallocated to the remaining employees. Since these payments are contingent on future employment, they are being recognized as compensation expense ratably over the required service periods. We recorded compensation expense of $0.5 million for the year ended December 27, 2014.
	The excess of the purchase price over the estimated fair value of the net tangible assets and intangible assets acquired was recorded as goodwill. The factors contributing to the recognition of the amount of goodwill are based on several strategic and synergistic benefits that are expected to be realized from the Citrus Lane acquisition. None of the goodwill is expected to be deductible for income tax purposes. Refer to Note 2 - Significant Accounting Policies.
	Pro forma Information
	The following unaudited pro forma financial information presents the combined results of operations of Care.com and Citrus Lane as if the acquisition had occurred on January 1, 2013, after giving effect to certain pro forma adjustments. The pro forma adjustments reflected herein include only those adjustments that are directly attributable to the Citrus Lane acquisition, factually supportable, and expected to have a continuing impact on us. Actual 2014 impairment charges were excluded from the pro forma results below. The pro forma financial information does not reflect any adjustments for anticipated synergies resulting from the acquisition and is not necessarily indicative of the operating results that would have actually occurred had the transaction been consummated on January 1, 2013.
		Pro Forma for the Years Ended
		27-Dec-14				28-Dec-13
	(in millions)
	Revenue	$	121.7			$	87.2
	Net loss	$	(45.8	)		$	(35.0	)
	Consmr
	On March 3, 2014, we entered into an agreement with Consmr, Inc. (“Consmr”), the developer of a mobile application for ratings and reviews of consumer products, pursuant to which we acquired the right to hire all employees of Consmr for total consideration of $0.6 million. Approximately $0.1 million of the purchase price was held back and is payable in one year subject to the continuing employment of the employees. Such amount is being recognized as compensation expense over the required employment period. The transaction is presented as an acquisition of a business and the consideration transferred, except for the amount held back, was recorded as goodwill.
	As a result of this transaction, on March 4, 2014 all former employees of Consmr became employees of Care.com. Pro forma information related to Consmr is not presented as the impact of the acquisition on our consolidated results of operations is not significant.
	BigTent
	In June 2013 we acquired certain assets and liabilities of BigTent, a provider of an online forum for groups to share information, which we determined to be an acquisition of a business. The results of operations of this acquisition have been included in our consolidated results from their respective acquisition dates. The total consideration for this acquisition was $0.7 million, paid in cash. In allocating the total purchase consideration for this acquisition based on estimated fair values, we recorded $0.5 million of identifiable intangible assets. Intangible assets acquired included primarily proprietary software and customer relationships with weighted average useful lives of 6.6 years.Transaction costs related to this business combination were not material and are included in general and administrative expenses in the accompanying consolidated statements of operations. We concluded that this acquisition did not represent a material business combination and therefore, no proforma financial information has been provided herein.
	Breedlove
	On August 3, 2012, we acquired all of the outstanding capital stock of Breedlove & Associates, L.L.C. (Breedlove), a provider of household employer payroll, tax and compliance services. The aggregate consideration payable to the former stockholders of Breedlove was $53.9 million. This consideration consisted of: $23.1 million that was paid in cash; the issuance of 1.7 million shares of our Series E preferred stock, valued at $21.9 million; and, if certain revenue-based milestones were achieved through 2014, up to an additional $5.0 million in cash (valued at $3.9 million) and 0.4 million additional shares of Series E preferred stock (gross value of $5.0 million). In connection with the acquisition, we incurred $0.1 million of merger related transaction costs, which we recorded as general and administrative expense in the accompanying statement of operations for the year ended December 31, 2012.
	We recorded our estimate of the fair value of this contingent consideration based on the evaluation of the likelihood of the achievement of the contractual conditions that would result in the payment of the contingent consideration and weighted probability assumptions of these outcomes. The fair value of the liability was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820, Fair Value Measurements and Disclosures. The significant inputs in the Level 3 measurement not supported by market activity included our probability assessments of expected future cash flows related to our acquisition of Breedlove during the earn-out period, appropriately discounted considering the uncertainties associated with the obligation, and calculated in accordance with the terms of the equity purchase agreement. The cash portion of the contingent consideration liability has been discounted to reflect the time value of money, and therefore, as the milestone date approaches, the fair value of this liability will increase. This increase in fair value was recorded in general and administrative expenses in the accompanying consolidated statements of operations. The preferred stock portion of the contingent consideration represents a liability in accordance with ASC 480-10, Distinguishing Liabilities from Equity, and is marked to market each reporting period with changes in market value recognized in other expense, net in the accompanying consolidated statements of operations. The results of operations for Breedlove have been included in our consolidated financial statements since the date of acquisition. The 2013 earn-out payment was remitted in the first quarter of fiscal 2014 in full. There have been no changes in the probability of the earn-out payment related to the 2014 earnout through December 27, 2014. For the period from the date of acquisition to December 31, 2012, revenue and net loss for Breedlove totaled $3.1 million and $0.1 million, respectively.
	During the years ended December 27, 2014 and December 28, 2013 we recognized $2.3 million and $0.2 million of expense related to the increase in fair value of the redeemable preferred stock.
	Identifiable Intangible Assets
	As part of the purchase price allocation, we determined that Breedlove’s primary separately identifiable intangible assets were its customer relationships, proprietary software and trade name. We used the multi-period excess earnings method to value the customer relationships. This method estimates the fair value of an asset by isolating the future projected earnings or cash flows attributable to that specific asset and then by discounting this economic benefit stream back to present value at the required rate of return. We used a hybrid approach to value the proprietary software. This approach incorporates elements of the income and cost approaches, specifically the lost profits and replacement cost methods. We used a royalty for the use of an asset, rather than incurring the costs associated with internally developing an asset of identical utility. The fair value is calculated by taking the present value of avoided after-tax cash flows discounted back to a present value. The baseline data for this analysis was the cash flow estimates used to price the transaction. Cash flows were forecasted for each intangible asset then discounted based on an appropriate discount rate. The discount rates applied, which ranged between 12.9% and 13.0%, were benchmarked with reference to the implied rate of return from the transaction model, as well as an estimate of a market participant’s weighted-average cost of capital based on the capital asset pricing model.
	In estimating the useful life of the acquired assets, we considered ASC 350-30-35, Intangibles-Goodwill and Other, and reviewed the following: the expected use by the combined company of the assets acquired, the expected useful life of another asset (or group of assets) related to the acquired assets, legal, regulatory or other contractual provisions that may limit the useful life of an acquired asset or may enable the extension of the useful life of an acquired asset without substantial cost, the effects of obsolescence, demand, competition and other economic factors, and the level of maintenance expenditures required to obtain the expected future cash flows from the asset.
	We amortized these intangible assets over their estimated useful lives using a method that is based on estimated future cash flows, as we believe this will approximate the pattern in which the economic benefits of the assets will be utilized, or where we have concluded that the cash flows were not reliably determinable, on a straight-line basis.
	The acquisition of Breedlove was deemed to be an asset purchase for income tax purposes. Accordingly, no deferred taxes were established relating to the fair value of the acquired intangible assets. The factors contributing to the recognition of goodwill were based upon several strategic and synergistic benefits that are expected to be realized from the combination. Substantially all of the goodwill is expected to be deductible for tax purposes.
	Betreut
	On July 5, 2012, we acquired all of the outstanding capital stock of Besser Betreut GmbH (‘‘Betreut’’), a provider of online matching services in Germany to connect care seekers with care providers. The aggregate consideration payable to the former stockholders of Betreut was $23.3 million. This consideration consisted of: the issuance of 1.8 million shares of our Series D-1 preferred stock valued at $19.3 million; the issuance of 0.5 million shares of our common stock valued at $2.9 million; and $1.1 million in cash. In connection with the acquisition, we incurred $0.4 million of merger-related transaction costs, which we recorded as general and administrative expense in the accompanying statement of operations for the year ended December 31, 2012.
	The results of operations for Betreut have been included in our consolidated financial statements since the date of acquisition. For the period from the date of acquisition to December 31, 2012, revenue and net loss for Betreut totaled $2.9 million and $1.8 million, respectively.
	Identifiable Intangible Assets
	As part of the purchase price allocation, we determined that Betreut’s primary separately identifiable intangible assets were its customer relationships, proprietary software, trade name and caregiver relationships. We used the multi-period excess earnings method to value the customer relationships. This method estimates the fair value of an asset by isolating the future projected earnings or cash flows attributable to that specific asset and then by discounting this economic benefit stream back to present value at the required rate of return. We used a hybrid approach to value the proprietary software and caregiver relationships. This approach incorporates elements of the income and cost approaches, specifically the lost profits and replacement cost methods. We used a relief from royalty method to value the trade name. This method assumes that a willing buyer would pay a royalty for the use of an asset, rather than incurring the costs associated with internally developing an asset of identical utility. The fair value is calculated by taking the present value of avoided after-tax cash flows discounted back to a present value. The baseline data for this analysis was the cash flow estimates used to price the transaction. Cash flows were forecasted for each intangible asset then discounted based on an appropriate discount rate. The discount rates applied, which ranged between 16.5% and 17.3%, were benchmarked with reference to the implied rate of return from the transaction model as well as an estimate of a market participant’s weighted-average cost of capital based on the capital asset pricing model.
	In estimating the useful life of the acquired assets, we considered ASC 350-30-35, and reviewed the following: the expected use by the combined company of the assets acquired, the expected useful life of another asset (or group of assets) related to the acquired assets, legal, regulatory or other contractual provisions that may limit the useful life of an acquired asset or may enable the extension of the useful life of an acquired asset without substantial cost, the effects of obsolescence, demand, competition and other economic factors, and the level of maintenance expenditures required to obtain the expected future cash flows from the asset.
	We amortize these intangible assets over their estimated useful lives using a method that is based on estimated future cash flows, as we believe this will approximate the pattern in which the economic benefits of the assets will be utilized, or where we have concluded that the cash flows were not reliably determinable, on a straight-line basis. The factors contributing to the recognition of goodwill were based upon our determination that several strategic and synergistic benefits are expected to be realized from the combination. None of the goodwill is expected to be currently deductible for tax purposes.
	Parents in a Pinch
	On December 31, 2012, we acquired all of the outstanding capital stock of Parents in a Pinch, Inc. (‘‘PIAP’’), a Boston-based provider of in-home backup childcare and elder care services for working families. The aggregate consideration payable to the former stockholders of PIAP was $1.6 million. This consideration consisted of: $1.4 million in cash; $0.2 million of cash withheld as security for the indemnification obligations of the PIAP stockholders; and up to an additional $0.7 million of revenue-based earn-outs through 2014, valued at $0.1 million which are payable in cash. In connection with the acquisition, we incurred less than $0.1 million of merger related transaction costs, which we recorded as general and administrative expense in the accompanying statement of operations for the year ended December 31, 2012. We recorded an estimate of the fair value of the earn-out (contingent consideration) based on the evaluation of the likelihood of the achievement of the contractual conditions that would result in the payment of the contingent consideration and weighted probability assumptions of these outcomes. The fair value of the liability was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820, Fair Value Measurements and Disclosures. The significant inputs in the Level 3 measurement not supported by market activity included our probability assessments of expected future cash flows related to our acquisition of PIAP during the earn-out period, appropriately discounted considering the uncertainties associated with the obligation, and calculated in accordance with the terms of the stock purchase agreement. This liability has been discounted to reflect the time value of money, and therefore, as the milestone date approaches, the fair value of this liability may increase. The results of operations for PIAP have been included in our consolidated financial statements since the date of acquisition. As the acquisition occurred on the last day of the fiscal year, no results of PIAP were included within our year ended December 31, 2012 consolidated statement of operations.
	Identifiable Intangible Assets
As part of the purchase price allocation, we determined that PIAP’s primary separately identifiable intangible assets were its customer relationships, proprietary software and trade name. We used the multi-period excess earnings method to value the customer relationships. This method estimates the fair value of an asset by isolating the future projected earnings or cash flows attributable to that specific asset and then by discounting this economic benefit stream back to present value at the required rate of return. We used a hybrid approach to value the proprietary software. This approach incorporates elements of the income and cost approaches, specifically the lost profits and replacement cost methods. We used a relief from royalty method to value the trade name. This method assumes that a willing buyer would pay a royalty for the use of an asset, rather than incurring the costs associated with internally developing an asset of identical utility. The fair value is calculated by taking the present value of avoided after-tax cash flows discounted back to a present value. The baseline data for this analysis was the cash flow estimates used to price the transaction. Cash flows were forecasted for each intangible asset then discounted based on an appropriate discount rate. The discount rates applied, which ranged between 17.2% and 17.9%, were benchmarked with reference to the implied rate of return from the transaction model, as well as an estimate of a market participant’s weighted-average cost of capital based on the capital asset pricing model.
In estimating the useful life of the acquired assets, we considered ASC 350-30-35, and reviewed the following: the expected use by the combined company of the assets acquired, the expected useful life of another asset (or group of assets) related to the acquired assets, legal, regulatory or other contractual provisions that may limit the useful life of an acquired asset or may enable the extension of the useful life of an acquired asset without substantial cost, the effects of obsolescence, demand, competition and other economic factors, and the level of maintenance expenditures required to obtain the expected future cash flows from the asset.
We amortize these intangible assets over their estimated useful lives using a method that is based on estimated future cash flows, as we believe this will approximate the pattern in which the economic benefits of the assets will be utilized, or where we have concluded that the cash flows were not reliably determinable, on a straight-line basis.
The acquisition of PIAP was deemed to be an asset purchase for income tax purposes. Accordingly, no deferred taxes were established relating to the fair value of the acquired intangible assets. The factors contributing to the recognition of goodwill were based upon several strategic and synergistic benefits that are expected to be realized from the combination. Substantially all of the goodwill is expected to be deductible for tax purposes.
Purchase Price Allocation
We accounted for our 2012 acquisitions as business combinations and, in accordance with ASC 805, Business Combinations, we have recorded the assets acquired and liabilities assumed at their respective fair values as of the acquisition date. The following table summarizes the components of the purchase price and purchase price allocation for the 2012 acquisitions (in thousands):
		Breedlove				Betreut			PIAP
Total purchase consideration:
Cash		$	23,076			$	1,099		$	1,419
Fair value of preferred and common stock issued		21,912				22,174			—
Fair value of contingent consideration		8,911				—			138
Total purchase consideration		$	53,899			$	23,273		$	1,557
Allocation of purchase consideration:
Cash		$	—			$	310		$	(21	)
Unbilled receivables		597				—			347
Accounts receivable		—				250			8
Other assets		273				178			35
Deferred tax liabilities		—				(1,139		)	—
Other current liabilities		(187		)		(476		)	(770		)
Identifiable intangible assets (a)		13,640				3,720			1,210
Goodwill		39,576				20,430			748
Purchase price		$	53,899			$	23,273		$	1,557
(a) The following are the identifiable intangible assets acquired and their respective weighted average useful lives (in thousands):
	Breedlove						Betreut					PIAP
	Amount				Weighted- Average Life (Years)		Amount			Weighted- Average Life (Years)		Amount		Weighted- Average Life (Years)
Trademarks and trade names	$	3,610			3		$	650		7		$	240	5
Proprietary software	2,610				5		1,950			5		190		5
Website	40				4		—			—		10		2
Training materials	—				—		—			—		30		3
Non-compete agreements	60				5		80			3		—		—
Leasehold interests	170				6		—			—		—		—
Caregiver relationships	—				—		270			3		50		3
Customer relationships	7,150				4		770			4		690		10
Total	$	13,640			4		$	3,720		5		$	1,210	8
Details related to the valuation techniques utilized for estimating fair value of the intangible assets acquired are shown below:
The fair value of the Series D-1 and Series E redeemable convertible preferred stock issued as consideration in the Breedlove and Betreut acquisition was derived based on third-party valuations of the Series D and Series E redeemable convertible preferred stock, respectively. These fair value measurements were based on significant inputs not observable in the market and thus represent Level 3 measurements under the fair value hierarchy.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 27, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	The following table presents the change in goodwill for the periods presented (in thousands):
	Balance as of December 28, 2013	$	62,686
	Citrus Lane acquisition	41,839
	Consmr acquisition	488
	Impairment of goodwill	(33,788		)
	Effect of currency translation	(2,540		)
	Balance as of December 27, 2014	$	68,685
	A roll forward of accumulated goodwill impairment losses for the year ended December 27, 2014 is as follows:
	Balance as of December 28, 2013	$	—
	Citrus Lane impairment	33,788
	Balance as of December 27, 2014	$	33,788
	During the fourth quarter of fiscal 2014, primarily as a result of unexpected changes, both internal and external, we determined that indicators of impairment existed in our Citrus Lane Reporting Unit. As a result, the fair value of this reporting unit was deemed to be below its carrying value and Step 2 of the goodwill impairment test was performed. Step 2 of the goodwill impairment test requires the completion of a hypothetical purchase price allocation to determine the fair value of the implied goodwill. Upon completion of the Step 2 analysis we determined that the Citrus Lane Goodwill was impaired and recorded a $33.8 million impairment charge.
	The following table presents the detail of intangible assets for the periods presented (dollars in thousands):
		Gross Carrying Value			Accumulated Amortization			Net Carrying Value		Weighted-Average Remaining Life (Years)
	27-Dec-14
	Indefinite lived intangibles	$	242		$	—		$	242	N/A
	Trademarks and trade names	5,281			(3,377		)	1,904		5.2
	Proprietary software	4,942			(3,351		)	1,591		2.5
	Website	1,150			(34		)	1,116		6.5
	Training materials	30			(20		)	10		1
	Non-compete agreements	137			(94		)	43		2
	Leasehold interests	170			(61		)	109		4.4
	Caregiver relationships	312			(252		)	60		0.7
	Customer relationships	8,857			(4,967		)	3,890		2.9
	Total	$	21,121		$	(12,156	)	$	8,965
	December 28, 2013:
	Indefinite lived intangibles	$	242		$	—		$	242	N/A
	Trademarks and trade names	4,561			(2,096		)	2,465		2.5
	Proprietary software	5,184			(2,952		)	2,232		3.5
	Website	50			(19		)	31		2.3
	Training materials	30			(10		)	20		2
	Non-compete agreements	148			(61		)	87		2.6
	Leasehold interests	170			(36		)	134		5.4
	Caregiver relationships	346			(164		)	182		1.6
	Customer relationships	8,953			(2,928		)	6,025		3.5
	Total	$	19,684		$	(8,266	)	$	11,418
	Amortization expense was $4.5 million and $6.0 million for the year ended December 27, 2014 and December 28, 2013, respectively. Of these amounts $3.5 million and $3.7 million was classified as a component of depreciation and amortization, and $1.0 million and $2.3 million was classified as a component of cost of revenue in the consolidated statements of operations for the year ended December 27, 2014 and December 28, 2013, respectively.
	As of December 27, 2014, the estimated future amortization expense related to current intangible assets for future fiscal years was as follows (in thousands):
	2015	$	3,886
	2016	2,222
	2017	806
	2018	461
	2019	400
	Thereafter	948
	Total	$	8,723
	During the fourth quarter of fiscal 2014, in connection with our goodwill impairment analysis, we performed a Step 2 test of recoverability of finite lived intangibles in accordance with ASC 360, indicating that our undiscounted future cash flows would not recover the carrying value of the Citrus Lane proprietary software and trade name intangible assets. We then performed a Step 3 impairment analysis of finite lived intangible assets under ASC 360 and determined that the carrying value of the Citrus Lane proprietary software and trade name exceeded the fair value of those assets as of the end of the fourth quarter and recognized and intangible asset impairment charge of $2.4 million.

Accrued_Expenses_and_Other_Cur

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 27, 2014
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities
	The following table presents the detail of accrued expenses and other current liabilities for the periods presented (in thousands):
		December 27,		December 28,
		2014		2013
	Payroll and compensation	$	1,722	$	3,134
	Tax-related expense	1,609		372
	Marketing expenses	3,385		1,028
	Other accrued expenses	6,016		2,489
	Total accrued expenses and other current liabilities	$	12,732	$	7,023

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 27, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Leases
	We have entered into various operating lease agreements, primarily covering certain of our offices throughout the world, with original lease periods expiring between 2014 and 2025. Facilities rent expense under these operating leases was $3.7 million and $2.5 million for the years ended December 27, 2014 and December 28, 2013, respectively. We are responsible for paying our share of the actual operating expenses and real estate taxes under certain of these lease agreements.
	Certain of these arrangements have renewal or expansion options, as well as adjustments for market provisions, such as free or escalating base monthly rental payments. We recognize rent expense under such arrangements on a straight-line basis over the initial term of the lease. The difference between the straight-line expense and the cash paid for rent has been recorded as deferred rent in the consolidated balance sheets.
	At December 27, 2014, minimum future lease commitments under all non-cancelable operating leases (including rent escalation clauses) were as follows (in millions):
		Payments Due by Period
		Total		Less Than 1 Year		1-3 Years		4-5 Years		Thereafter
	Operating lease obligations	$	47.3	$	4.2	$	8.7	$	9.6	$	24.8
	In July 2014, we entered into a lease agreement pursuant to which we agreed to lease office space to be used for our new headquarters (the “Prime Lease”). The Prime Lease is initially for 36,174 square feet of office space, comprising of the entire sixth floor of the building located at 77 Fourth Avenue, Waltham, Massachusetts, or the Building. The leased premises under the Prime Lease will increase by an additional 36,395 square feet, comprising of the entire fourth floor of the Building, on March 1, 2019 and by an additional 36,174 square feet, comprising of the entire fifth floor of the Building, on April 1, 2019. The term of the Prime Lease commences on August 4, 2014 and expires 120 months from the date base rent payments first become due, which date is the earlier of January 1, 2015 and the date we commence operations in the space. We recorded deferred rent on the consolidated balance sheet. We recognize rent expense on a straight-line basis over the expected lease term. The total cash obligation for the base rent over the term of the Prime Lease will be $34.5 million, and is included in the table above.
	Also in July 2014, we entered into two sublease agreements pursuant to which we agreed to lease the entire fourth and fifth floors of the Building. The term of the fourth floor sublease commenced on December 22, 2014 and expires on February 15, 2019, after which the space will be leased by us pursuant to the Prime Lease. The total cash obligation for the base rent over the term of this sublease will be $4.3 million, and is included in the table above. The term of the fifth floor sublease commence on January 1, 2015 and expires on March 30, 2019, after which the space will be leased by us pursuant to the Prime Lease. The lease commencement date for accounting purposes was determined to be August 4, 2014, which represents the date we received access to the fourth and fifth floors. The total cash obligation for the base rent over the term of this sublease will be $4.1 million, and is included in the table above. We have the right to extend the term of the lease agreement for one 10-year period.
	We received $2.3 million as tenant improvements allowance under the terms of our new operating lease, which we recorded as deferred rent are amortizing on a straight-line basis over the term of the lease as an offset to rent expense.
	In connection with the Prime Leases, we paid $2.8 million in security deposits recorded within other non-current assets on our consolidated balance sheet as of December 27, 2014.
	In connection with the execution of the Prime Lease, we entered into an amendment to our lease agreement for our current headquarters pursuant to which that agreement will terminate without penalty on the earlier of (i) ten days after the date we commenced operations under the Prime Lease and (ii) December 31, 2014.
	We recognized total rent expense related to the current and new headquarters of approximately $2.7 million, $1.6 million and $1.5 million for the years ended December 27, 2014, December 28, 2013 and December 31, 2012, respectively.
	Capital Expenditure and Other Commitments:
	As of December 27, 2014, we expect to incur approximately $0.4 million in future capital expenditures related to the relocation of our headquarters and approximately $1.1 million of inventory purchase commitments.
	During fiscal 2012, we made a 50% investment in the Venture with Magsaysay in which we and Magsaysay each have a commitment to provide an additional $0.4 million of funding over the next two years based on our voting interest. To date, the operations of the Venture have not been significant.
	Legal matters
	From time to time, we have or may become party to litigation incident to the ordinary course of business. We assess the likelihood of any adverse judgments or outcomes with respect to these matters and determine loss contingency assessments on a gross basis after assessing the probability of incurrence of a loss and whether a loss is reasonably estimable. In addition, we consider other relevant factors that could impact our ability to reasonably estimate a loss. A determination of the amount of reserves required, if any, for these contingencies is made after analyzing each matter. Our reserve may change in the future due to new developments or changes in strategy in handling these matters. Although the results of litigation and claims cannot be predicted with certainty, we currently believe that the final outcome of all pending matters will not have a material adverse effect on our business, consolidated financial position, results of operations, or cash flows. Regardless of the outcome, litigation can adversely impact us due to defense and settlement costs, diversion of management resources, and other factors.

Stockholders_Equity_Deficit

Stockholders' Equity (Deficit)	12 Months Ended
	Dec. 27, 2014
Equity [Abstract]
Stockholders' Equity (Deficit)	Stockholders’ Equity (Deficit)
	Initial Public Offering (IPO)
	On January 29, 2014, we closed our IPO in which we sold and issued 6,152,500 shares of common stock, including 802,500 shares of common stock pursuant to the exercise of the underwriters’ option to purchase additional shares, which were sold to the public at a price of $17.00 per share. We received net proceeds of approximately $94.8 million from the IPO, including the exercise of the underwriters’ over-allotment option, net of underwriters’ discounts and commissions, and after deducting offering expenses of approximately $2.4 million.
	Upon the closing of the IPO, all shares of our outstanding redeemable convertible preferred stock automatically converted into 21,490,656 shares of common stock and our outstanding warrant to purchase redeemable convertible preferred stock automatically converted into a warrant to purchase 40,697 shares of common stock at $1.72 per share.
	Common Stock
	As of December 27, 2014, we had reserved the following shares of common stock for future issuance in connection with the following (in thousands):
		December 27, 2014
	Contingent consideration payable in common stock	297
	Options issued and outstanding	4,270
	Options available for grant under stock option plans	3,062
	Total	7,629
	Preferred Stock Warrants
	In connection with a debt financing in 2007, we issued Lighthouse Capital Partners a warrant to purchase 40,697 shares of our Series A-1 convertible preferred stock at an exercise price of $1.72 per share, expiring October 2014, which were fully exercisable upon issuance. In conjunction with the closing of our IPO in January 2014, the warrant was automatically converted into a warrant exercisable for 40,697 shares of common stock at a purchase price of $1.72 per share, which resulted in the reclassification of the related convertible preferred stock warrant liability to additional paid-in capital as the warrant met the criteria for equity classification upon conversion to a warrant to purchase common stock. In accordance with ASC 480-10, Distinguishing Liabilities from Equity, the freestanding warrant for our preferred stock was recognized as a liability and recorded at fair value in all periods prior to its conversion into a warrant to purchase common stock. The warrant liability was re-measured to fair value prior to reclassification to additional paid-in capital. The warrant was exercised during the year ended December 27, 2014 using a net exercise method which resulted in the issuance of 38,142 shares of common stock. There were no proceeds received by us related to this transaction.
	Common Stock Warrants
	In connection with a 2010 Loan and Security Agreement, we issued a warrant to purchase a maximum of 40,000 shares of our common stock at an exercise price of $1.65 per share. The warrant was exercised during the year ended December 27, 2014 using a net exercise method which resulted in the issuance of 37,591 shares of common stock. There were no proceeds received by us related to this transaction.

Stock_Option_Plans_and_StockBa

Stock Option Plans and Stock-Based Compensation	12 Months Ended
	Dec. 27, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Option Plans and Stock-Based Compensation	Stock Option Plans and Stock-Based Compensation
	Stock Option Plans
	On November 15, 2006, we adopted our 2006 Stock Incentive Plan (‘‘the 2006 Plan’’), which provides for the issuance of incentive and non-qualified stock options, restricted stock and other stock-based awards to employees and non-employees of the Company. We reserved 4,567,500 shares of common stock for issuance under the 2006 Plan. Options generally vest over four years, with 25% vesting upon the one-year anniversary of the date of hire, and the remaining 75% vesting quarterly over the next three years. Options granted to consultants or other non-employees generally vest over the expected service period to the Company. The options expire ten years from the date of grant. We issue new shares to satisfy stock option exercises. Only stock options have been issued under the 2006 Plan. No grants have been made under the 2006 Plan since our IPO, and no further awards will be granted under the 2006 Plan. However, the 2006 Plan will continue to govern outstanding awards granted under the 2006 Plan.
	During 2010, we granted our Chief Executive Officer (“CEO”) a performance-based option to purchase 150,000 shares, which vests in tranches if defined corporate goals are achieved during fiscal years 2011 through 2014. We recorded a share-based compensation expense related to this award of $0.2 million during the year ended December 28, 2013. No stock-based compensation expense related to this award was recorded in the year ended December 27, 2014, as it is currently not probable of vesting.
	On January 23, 2014, we adopted our 2014 Incentive Award Plan (‘‘the 2014 Plan’’), which provides for the issuance of incentive and non-qualified stock options, restricted stock and other stock-based awards to employees, directors and non-employees of the Company and our subsidiaries. We initially reserved 4,112,048 shares of common stock for issuance under the 2014 Plan. The number of shares initially available for issuance will be increased by (i) the number of shares represented by awards outstanding under the 2006 Plan that are forfeited, lapse unexercised or are settled in cash and which following the effective date of the 2014 Plan are not issued under the 2006 Plan and (ii) an annual increase on January 1 of each calendar year beginning in 2015 and ending in 2019, equal to the lesser of (A) 4% of the shares of common stock outstanding (on an as-converted basis) on the final day of the immediately preceding calendar year and (B) an amount as determined by our board of directors. No more than 5,002,935 shares of common stock may be issued upon the exercise of incentive stock options. Options generally vest over four years, with 25% vesting upon the one-year anniversary of the date of hire, and the remaining 75% vesting quarterly over the next three years. Options granted to consultants or other non-employees generally vest over the expected service period to the Company. The options expire ten years from the date of grant. To date only stock options have been issued under the 2014 Plan.
	We assumed certain other plans in connection with the Citrus Lane acquisition and no shares are available for future grant under these plans.
	Stock-Based Compensation
	A summary of stock option activity for the year ended December 27, 2014 was as follows (in thousands for shares and intrinsic value):
		Number of Shares			Weighted-Average Remaining Contractual Term (Years)		Weighted-Average Exercise Price			Aggregate Intrinsic Value
	Outstanding as of December 28, 2013	3,439			7.98		$	4.28		$	27,148
	Granted	1,554					11.15
	Canceled and forfeited	(503	)				8.16
	Exercised	(220	)				4.51
	Outstanding as of December 27, 2014	4,270			7.17		6.47			14,373
	Options vested and exercisable as of December 27, 2014	2,381			6.25		4.04			11,194
	Options vested and expected to vest as of December 27, 2014 (1)	4,194			7.15		$	6.39		$	14,283
	(1) Options expected to vest reflect an estimated forfeiture rate
	Aggregate intrinsic value represents the difference between the closing stock price of our common stock and the exercise price of outstanding, in-the-money options. Our closing stock price as reported on the New York Stock Exchange as of December 27, 2014 was $8.33. The total intrinsic value of options exercised was approximately $1.6 million for the fiscal year ended December 27, 2014. The weighted-average grant-date fair value of options granted was $7.83 for the year ended December 27, 2014. The aggregate fair value of the options that vested during the fiscal year ended December 27, 2014 was $3.7 million respectively.
	As of December 27, 2014, total unrecognized compensation cost, adjusted for estimated forfeitures, related to non-vested stock options was approximately $9.1 million, which is expected to be recognized over the next 2.5 years. As of December 27, 2014, we had 3,061,898, shares available for grant under the 2014 Plan.
	The following table presents the assumptions used to estimate the fair value of options granted during the periods presented:
		Fiscal Year Ended
		December 27,		December 28,
		2014		2013
	Risk-free interest rate	1.81 - 1.95%		1.23 - 2.00%
	Expected term (years)	6.25		6.25
	Volatility	47.1 - 56.3%		44.60%
	Expected dividend yield	—		—
	The following table summarizes stock-based compensation in our accompanying consolidated statements of operations (in thousands):
		Fiscal Year Ended
		December 27,				December 28,			December 31,
		2014				2013			2012
	Cost of revenue	$	183			$	161		$	159
	Selling and marketing	763				348			369
	Research and development	624				356			213
	General and administrative	4,235				997			1,211
	Total stock-based compensation	$	5,805			$	1,862		$	1,952
	Included in stock-based compensation expense is approximately $1.4 million related to the acceleration of vesting of certain equity awards assumed as part of the Citrus Lane acquisition.

Net_Loss_Per_Share

Net Loss Per Share	12 Months Ended
	Dec. 27, 2014
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss Per Share
	Basic net loss per share is computed by dividing net loss attributable to common shareholders by the weighted-average number of common shares outstanding during the period. The holders of our Series A, A-1, B, C, D, D-1 and E redeemable convertible preferred stock did not have contractual obligations to share in or fund our losses. Diluted net loss per share attributable to common shareholders is computed by dividing net loss by the weighted-average number of common shares outstanding during the period and potentially dilutive common stock equivalents, except in cases where the effect of common stock equivalent would be anti-dilutive. Potential common stock equivalents consist of common stock issuable upon exercise of stock options and in 2013 and 2012 also included common stock issuable upon conversion of our redeemable convertible preferred stock and warrants to purchase our redeemable convertible preferred stock.
	The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):
		Fiscal Year Ended
		December 27,				December 28,			December 31,
		2014				2013			2012
	Net Loss	$	(80,292	)		$	(28,296	)	$	(20,420	)
	Accretion of preferred stock	(4		)		(57		)	(48		)
	Net loss attributable to common stockholders	$	(80,296	)		$	(28,353	)	$	(20,468	)
	Net loss per share attributable to common stockholders:
	Basic and diluted	$	(2.77	)		$	(9.45	)	$	(7.97	)
	Weighted-average shares used to compute net loss per share attributable to common stockholders:
	Basic and diluted	28,941				3,000			2,568
	The following equity shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	Redeemable convertible preferred stock	—			21,299			21,299
	Stock options	4,270			3,439			2,706
	Preferred stock warrants	—			41			41
	Common stock warrants	—			40			40

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 27, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	We account for income taxes in accordance with authoritative guidance, which requires the use of the asset and liability method. Under this method, deferred income tax assets and liabilities are determined based upon the difference between the consolidated financial statement carrying amounts and the tax basis of assets and liabilities and are measured using the enacted tax rate expected to apply to taxable income in the years in which the differences are expected to be reversed.
	The following table presents domestic and foreign components of loss before income taxes for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	United States	(75,463	)		(22,182	)		(16,656	)
	Foreign	(5,581	)		(5,760	)		(4,081	)
	Total loss before income taxes	(81,044	)		(27,942	)		(20,737	)
	The following table presents the components of the (benefit from) provision for income taxes for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,				December 28,				December 31, 2012
		2014				2013
	Current:
	Federal	$	—			$	—			$	—
	State	108				70				28
	Foreign	33				—				—
	Total current provision for income taxes	141				70				28
	Deferred:
	Federal	(757		)		626				374
	State	(136		)		49				63
	Foreign	—				(391		)		(782		)
	Total deferred tax (benefit) provision	(893		)		284				(345		)
	Total (benefit from) provision for income taxes	$	(752	)		$	354			$	(317	)
	The following table presents a reconciliation of the statutory federal rate, and our effective tax rate, for the periods presented:
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	U.S. federal taxes at statutory rate	34	%		34	%		34	%
	State income taxes, net of federal benefit	—			2			3
	Permanent differences	(2	)		(3	)		(4	)
	Impairment of goodwill and intangible assets	(14	)		—			—
	Foreign rate differential	—			(1	)		(1	)
	Change in valuation allowance - U.S.	(15	)		(28	)		(31	)
	Change in valuation allowance - foreign	(2	)		(5	)		(2	)
	Rate change	—			—			3
	Total	1	%		(1	)%		2	%
	The increase in the income tax benefit for fiscal 2014 compared to fiscal 2013, is primarily due to the income tax benefit related to a non-recurring income tax benefit of $1.9 million related to the reversal of our valuation allowance against the Citrus Lane deferred tax liabilities recorded in purchase accounting, partially offset by the income tax expense related to the amortization of goodwill for tax purposes for which there is no corresponding book deduction and certain state taxes based on operating income that are payable without regard to our tax loss carry forwards. The goodwill amortization results in a deferred tax liability, the reversal of which cannot be forecasted, and therefore, cannot be used as a source of income to support the realizability of our U.S. deferred tax assets.
	The tax benefit recorded in the year ended December 27, 2014, is primarily due to the income tax benefit related to the reversal of our valuation allowance against the Citrus Lane deferred tax liabilities recorded in purchase accounting, partially offset by the income tax expense related to the amortization of goodwill for tax purposes for which there is no corresponding book deduction and certain state taxes based on operating income that are payable without regard to our tax loss carry forwards.
	The tax provision recorded in the year ended December 28, 2013 is primarily related to the amortization of goodwill for tax purposes for which there is no corresponding book deduction and certain state taxes based on operating income that are payable without regard to our tax loss carryforwards, partially offset by foreign deferred tax benefits, related to the expected future realization of German deferred tax assets expected to offset future reversal of deferred tax liabilities of definite lived intangibles established in purchase accounting.
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The following table presents the significant components of our deferred tax assets and liabilities for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,				December 28,
		2014				2013
	Deferred tax assets
	Net operating loss carryforwards	$	40,790			$	25,307
	Fixed assets	—				76
	Accrued expenses	1,696				28
	Stock-based compensation	1,618				140
	U.S. definite lived intangibles	3,538				1,609
	Other temporary differences	33				475
	Total deferred tax assets	47,675				27,635
	Valuation allowance	(46,619		)		(27,215		)
	Net deferred tax assets	1,056				420
	Deferred tax liabilities
	Foreign intangibles	(224		)		(386		)
	U.S. goodwill	(2,072		)		(1,112		)
	Fixed assets	(832		)		—
	Other	—				(34		)
	Total deferred tax liabilities	(3,128		)		(1,532		)
	Net deferred tax liabilities	$	(2,072	)		$	(1,112	)
	As of December 27, 2014, we had federal net operating loss carryforwards of $98.0 million and state net operating loss carryforwards of $76.8 million, which may be available to reduce future taxable income. The net operating loss (‘‘NOL’’) will expire at various dates through 2034. Included in the federal and state net operating losses are deductions attributable to excess tax benefits from the exercises of stock compensation of $0.6 million and $0.5 million, respectively. The tax benefits attributable to these deductions are credited directly to additional paid-in capital upon utilization of these deferred tax assets to reduce taxes payable. As of December 27, 2014, we had foreign net operating losses primarily related to our German operations of $8.2 million, our U.K. operations of $3.5 million, and our Australia operations of $0.3 million that have an unlimited carryforward period under German, U.K. and Australia tax law. We also had foreign net operating losses in our Canadian operation of $1.1 million that have a twenty year carryforward.
	The NOLs are subject to review and possible adjustment by the Internal Revenue Service and state tax authorities. NOL carryforwards may become subject to an annual limitation in the event of certain cumulative changes in the ownership interest of significant shareholders over a three-year period in excess of 50%, as defined under Sections 382 and 383 of the Internal Revenue Code, respectively, as well as similar state provisions. This could limit the amount of tax attributes that can be utilized annually to offset future taxable income or tax liabilities. The amount of the annual limitation is determined based on the value of the company immediately prior to the ownership change. Subsequent ownership changes may further affect the limitation in future years. We have not, as yet, conducted a study to determine if any such changes have occurred that could limit our ability to use the net operating losses and tax credit carryforwards.
	ASC 740 requires a valuation allowance to reduce the deferred tax assets if, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. After consideration of all the evidence, both positive and negative, we have recorded a valuation allowance of $46.6 million and $27.2 million at December 27, 2014 and December 28, 2013, respectively, because our management has determined that is it more likely than not that these assets will not be fully realized. The increase of $19.4 million in the overall valuation allowance relates primarily to U.S. and certain foreign operating losses for which we currently provide no tax benefit.
As of December 27, 2014 and December 28, 2013, the Company had no recorded liabilities for uncertain tax positions. Interest and penalty charges, if any, related to uncertain tax positions would be classified as income tax expense in the accompanying consolidated statements of operations. As of December 27, 2014, December 28, 2013 and December 31, 2012, the Company had no accrued interest or penalties related to uncertain tax positions.
We file U.S. federal income tax returns and returns in various state, local, and foreign jurisdictions. Generally, the statute of limitations remains open for all tax years. Currently, we are not under examination relating to tax returns that have been previously filed.
Our current intentions are to indefinitely reinvest the earnings of our foreign subsidiaries, if any, or to repatriate only when tax-effective. Accordingly, we have not provided for U.S. taxes on the unremitted earnings of our international subsidiaries, which are not significant as of December 27, 2014, and it would not be practicable to determine the amount of related unrecognized deferred income tax liability.

Segment_and_Geographical_Infor

Segment and Geographical Information	12 Months Ended
	Dec. 27, 2014
Segment Reporting [Abstract]
Segment and Geographical Information	Segment and Geographical Information
	We consider operating segments to be components of the Company in which separate financial information is available that is evaluated regularly by our chief operating decision maker in deciding how to allocate resources and in assessing performance. Our chief operating decision maker is the CEO. The CEO reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. Accordingly, we have determined that we have a single operating and reportable segment comprised of the following product lines (dollars in thousands):
		Fiscal Year Ended
		December 27,			December 28,				December 31,
		2014			2013				2012
	Consumer matching	$	82,031		$	61,645			$	41,409
	Consumer payments	14,493			10,770				3,133
	Merchandise	6,001			—				—
	Other	14,188			9,072				3,951
	Total revenue	$	116,713		$	81,487			$	48,493
	No country outside of the United States provided greater than 10% of our total revenue. Revenue is classified by the major geographic areas in which our customers are located. The following table summarizes total revenue generated by our geographic locations (dollars in thousands):
		Fiscal Year Ended
		December 27,			December 28,				December 31,
		2014			2013				2012
	United States	$	108,048		$	74,800			$	45,514
	International	8,665			6,687				2,979
	Total revenue	$	116,713		$	81,487			$	48,493
		Fiscal Year Ended
		December 27,		December 28,			December 31,
		2014		2013			2012
		(As a percentage of revenue)
	United States	93	%	92	%		94	%
	International	7	%	8	%		6	%
	Total revenue	100	%	100	%		100	%
	Our long-lived assets are primarily located in the United States and not allocated to any specific region. Therefore, geographic information is presented only for total revenue.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 27, 2014
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions
	We entered into a master services agreement in February 2011 with the United Services Automobile Association, who later in 2011 participated as the lead investor in the Series D redeemable convertible preferred stock financing. We have not recognized any significant revenue under the master service agreement in each of the years ended December 27, 2014, December 28, 2013 and December 31, 2012. The terms of this agreement have been superseded in their entirety by the terms of the alliance agreement referenced in the next paragraph.
	In December 2013, we entered into an alliance agreement with USAA Alliance Services, LLC, or USAA Alliance, an affiliate of USAA, pursuant to which USAA Alliance has agreed to promote our services to USAA members and we have agreed to offer our services to their members at specified discounts, which vary based on the nature of the services purchased. Under the terms of the alliance agreement, we have agreed to pay USAA Alliance specified commissions in connection with the services that are purchased by USAA members under the alliance agreement. Commissions vary based on the nature of the services purchased. Under the alliance agreement, we made payments totaling less than $100,000 in 2014.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 27, 2014
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Employee Benefit Plans
	We have established a 401(k) tax-deferred savings plan covering all employees who satisfy certain eligibility requirements. The 401(k) plan allows each participant to defer a percentage of their eligible compensation subject to applicable annual limits pursuant to the limits established by the Internal Revenue Service. We may, at our discretion, make contributions in the form of matching contributions or profit sharing contributions. To date, we have not made any matching or profit-sharing contributions.

Other_Expense_Net

Other Expense, Net	12 Months Ended
	Dec. 27, 2014
Other Income and Expenses [Abstract]
Other Expense, Net	Other Expense, Net
	Other expense, net consisted of the following (in thousands):
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	Interest income	$	86		$	47		$	48
	Interest expense	(43		)	(17		)	(3		)
	Other expense, net	(3,899		)	(321		)	(92		)
	Total other expense, net	$	(3,856	)	$	(291	)	$	(47	)

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 27, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	We consider events or transactions that occur after the balance sheet date but prior to the issuance of the financial statements to provide additional evidence for certain estimates or to identify matters that require additional disclosure. Subsequent events have been evaluated as required. There were no material recognized subsequent events recorded in the consolidated financial statements as of and for the year ended December 27, 2014.

Quarterly_Financial_Informatio

Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 27, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information (Unaudited)	Quarterly Financial Information (Unaudited)
	The table below sets forth unaudited selected quarterly financial data for each of the last two fiscal years (dollars in thousands, except per share data).
		For the Quarter Ended
		December 27, 2014			September 27, 2014			June 28, 2014			March 29, 2014
	Total revenue	$	33,552		$	32,054		$	25,836		$	25,271
	Cost of revenue	9,729			9,132			5,713			5,771
	Operating loss	(40,255		)	(14,987		)	(9,633		)	(12,313		)
	Net loss	(40,420		)	(14,453		)	(9,875		)	(15,544		)
	Net loss attributable to common stockholders	(40,420		)	(14,453		)	(9,875		)	(15,548		)
	Net loss per common share—basic and diluted	$	(1.28	)	$	(0.46	)	$	(0.32	)	$	(0.71	)
		For the Quarter Ended
		December 28, 2013			September 28, 2013			June 30, 2013			March 31, 2013
	Total revenue	$	22,511		$	21,681		$	19,133		$	18,162
	Cost of revenue	4,852			5,158			4,607			4,227
	Operating loss	(3,891		)	(11,469		)	(5,906		)	(6,385		)
	Net loss	(3,631		)	(11,732		)	(6,114		)	(6,819		)
	Net loss attributable to common stockholders	(3,646		)	(11,746		)	(6,128		)	(6,833		)
	Net loss per common share—basic and diluted	$	(1.16	)	$	(3.86	)	$	(2.08	)	$	(2.35	)
	Information in any one quarterly period should not be considered indicative of annual results due to the effects of seasonality on our business.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 27, 2014
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of the Company and our wholly owned subsidiaries, after elimination of all intercompany balances and transactions. We have prepared the accompanying financial statements in conformity with generally accepted accounting principles in the United States of America (“U.S. GAAP”).
Fiscal Year-End	Fiscal Year-End
	For periods prior to Fiscal 2013, we operated and reported on a calendar basis fiscal year. Beginning in the third quarter of Fiscal 2013, we operate and report using a 52 or 53 week fiscal year ending on the Saturday in December closest and prior to December 31. Accordingly, our fiscal quarters end on the Saturday that falls closest to the last day of the third month of each quarter.
Use of Estimates	Use of Estimates
	The preparation of our consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of income and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those related to accounts receivable and revenue allowances, intangible asset valuations, expected future cash flows used to evaluate the recoverability of long-lived assets, the useful lives of long-lived assets including property and equipment and intangible assets, valuation of common and preferred stock and warrants to purchase preferred stock, fair value of stock-based awards, goodwill, income taxes, contingent consideration, and contingencies. We base our estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. These estimates are based on information available as of the date of the consolidated financial statements; therefore, actual results could differ from the estimates.
Revenue Recognition	Revenue Recognition
	In general, we recognize revenue when (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred or services have been rendered to the customer, (iii) the fee is fixed or determinable, and (iv) collectability is reasonably assured. We derive our revenue primarily from on-going subscription fees. Revenue from subscription fees is recognized on a daily basis over the subscription term or on a pro-rata basis as the services are delivered. Revenue from background checks, lead generation and advertising is recognized in the period earned. For product sales, these criteria are deemed to have been met when the items are delivered to the end customer. Other service revenues are recognized as the services are performed. Shipping and handling charges are included in revenue on a gross basis. Taxes that are collected from customers and remitted to government authorities are presented on a net basis and are excluded from revenue.
	Certain of our arrangements provide companies the opportunity to purchase Care.com services on behalf of their employees. These arrangements typically include a subscription to our consumer matching solutions for their employees. These arrangements are accounted for as multiple element arrangements. We have concluded that each element in the arrangement has stand-alone value as the individual services can be sold separately. In addition, there is no right of refund once a service has been delivered. Therefore, we have concluded each element of the arrangement is a separate unit of accounting. In accordance with authoritative guidance on revenue recognition, we allocate consideration at the inception of an arrangement to each unit of accounting based on the relative selling price method in accordance with the selling price hierarchy. The objective of the hierarchy is to determine the price at which we would transact a sale if the service were sold on a stand-alone basis, and requires the use of: (1) vendor-specific objective evidence (‘‘VSOE’’), if available; (2) third-party evidence (‘‘TPE’’), if VSOE is not available; and (3) best estimate of selling price (‘‘BESP’’), if neither VSOE nor TPE is available. Since VSOE or TPE are not typically available, BESP is generally used to allocate the selling price to each unit of accounting. We determine BESP for units of account by considering multiple factors including, but not limited to, prices we charge for similar offerings, sales volumes, geographies and other factors contemplated in negotiating multiple element transactions.
Concentrations of Credit Risk	Concentrations of Credit Risk
	Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of cash and cash equivalents and accounts receivable. We place our cash and cash equivalents with major financial institutions throughout the world that management assesses to be of high-credit quality in order to limit exposure of each investment. As of December 27, 2014 and December 28, 2013, substantially all of our cash had been invested in money market funds.
	Credit risk with respect to accounts receivable is dispersed due to the large number of customers. During the year ended December 27, 2014, one customer accounted for 15% of total accounts receivable and no customer accounted for more than 10% of total revenue. During the year ended December 28, 2013 no single customer accounted for more than 10% of total accounts receivable or revenue. In addition, our credit risk is mitigated by a relatively short collection period. Collateral is not required for accounts receivable. We record our accounts receivable in our consolidated balance sheets at net realizable value. We perform on-going credit evaluations of our customers and maintain allowances for potential credit losses, based on management’s best estimates. Amounts determined to be uncollectible are written off against this reserve.
Foreign Currency Translation	Foreign Currency Translation
	We determine the functional currency for our foreign subsidiaries by reviewing the currencies in which their respective operating activities occur. Financial information is translated from the functional currency to the U.S. dollar, the reporting currency, for inclusion in our consolidated financial statements. Income, expenses, and cash flows are translated at average exchange rates prevailing during each month of the fiscal year, and assets and liabilities are translated at fiscal period end exchange rates. Foreign exchange transaction gains and losses are included in other expense, net in the accompanying consolidated statements of operations. The effects of foreign currency translation adjustments are included as a component of accumulated other comprehensive income in the accompanying consolidated balance sheets.
Cash Equivalents	Cash Equivalents
	We consider highly liquid investments purchased with an original maturity of 90 days or less at the time of purchase to be cash equivalents.
Restricted Cash	Restricted Cash
	Restricted cash relates primarily to monies held in escrow to settle contractual obligations and funds received from families that are due to their clients’ respective providers or the taxing authorities, but have not yet been remitted. Amounts received from families that are held by us until disbursement to their providers and taxing authorities are restricted as to usage because we are obligated to forward such funds to the recipients on behalf of our paying families. As of December 27, 2014, restricted cash is classified within current assets in the accompanying consolidated balance sheets because such amounts are scheduled to be remitted within the twelve months following the balance sheet date.
Deferred Revenue	Deferred Revenue
	Deferred revenue primarily consists of payments received in advance of revenue recognition of the services described above, and is recognized as the revenue recognition criteria are met. Our customers pay for most services in advance on a monthly, quarterly or annual basis. Amounts expected to be recognized within the twelve months following the balance sheet date are classified within current liabilities in the accompanying consolidated balance sheets.
Unbilled Receivables	Unbilled Receivables
	Unbilled receivables consist of amounts earned upon satisfying the revenue recognition criteria in advance of billing. Subscribers to our Care.com HomePay solution are billed quarterly in arrears at the beginning of the subsequent calendar quarter to which the services related.
Cost of Revenue	Cost of Revenue
	Cost of revenue primarily consists of expenses that are directly related, or closely correlated, to revenue generation, including matching and payments member variable servicing costs such as personnel costs for customer support, transaction fees related to credit card payments and the cost of background checks run on both families and caregivers. Additionally, cost of revenue includes website hosting fees and amortization expense related to caregiver relationships, proprietary software acquired as part of acquisitions and website intangible assets. In addition, we have product fulfillment costs, largely consisting of product, shipping and costs associated with our third party fulfillment providers.
Fair Value Measurement	Recurring Fair Value Measurement
	Accounting Standards Codification (“ASC”) 820, Fair Value Measurements and Disclosures, establishes a three-level valuation hierarchy for disclosure of fair value measurements. The categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the measurement of fair value. The three levels of the hierarchy are defined as follows:
	•	Level 1 inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.
	•	Level 2 inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.), or inputs that are derived principally from or corroborated by market data by correlation or other means.
	•	Level 3 inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.
	Recurring Fair Value Measurements
	Assets
	Cash equivalents - Cash equivalents include money market mutual funds with original maturities of three months or less. The fair value measurement of these assets is based on quoted market prices in active markets for identical assets and, therefore, these assets are recorded at fair value on a recurring basis and classified as Level 1 in the fair value hierarchy.
	Liabilities
	Contingent Acquisition Consideration - Contingent acquisition consideration includes the fair value of contingent consideration paid by us in connection with corporate acquisitions based on the likelihood of issuing preferred and common stock and paying cash related to certain revenue and other milestones. We recorded our estimate of the fair value of this contingent consideration based on the evaluation of the likelihood of the achievement of the contractual conditions that would result in the payment of the contingent consideration and weighted probability assumptions of these outcomes. The fair value of the liability was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820, Fair Value Measurements and Disclosures.
	For contingent consideration payable in preferred stock, we used a valuation of the company based on both an income and market approach to determine the fair value of the preferred stock as of the acquisition date and on an-ongoing basis. Upon the closing of our initial public offering (“IPO”) in January 2014, the contingent consideration payable in preferred stock was automatically converted to the right to receive common stock at the then-applicable conversion rate. Contingent consideration payable in preferred stock was written up to fair value as of the closing date of the IPO and was reclassified to permanent equity and will no longer be marked-to-market. There have been no changes in the probability of the earn-out payment through December 27, 2014.
	The cash portion of the contingent consideration liability has been discounted to reflect the time value of money, and therefore, as the milestone date approaches, the fair value of this liability will increase. This increase in fair value was recorded in general and administrative expenses in the accompanying consolidated statements of operations. The preferred stock portion of the contingent consideration represented a liability in accordance with ASC 480-10, Distinguishing Liabilities from Equity, and was marked-to-market each reporting period with changes in market value recognized in other expense, net in the accompanying consolidated statements of operations.
	During the year-ended December 28, 2013 we reassessed the probability of achievement on the Care Concierge, Inc. contingent acquisition cash payment based on the achievement of certain revenue milestones and the probability of reaching both the 2013 and 2014 milestones, which resulted in $0.6 million of incremental expense. No incremental expense was recorded in the year ended December 27, 2014. During the year ended December 27, 2014, in connection with our acquisition of Citrus Lane, Inc. (“Citrus Lane”), we recognized acquisition consideration payable in cash and shares totaling $17.5 million. The probability of achievement of this earn-out is assessed at 100%.
	The significant inputs in the Level 3 measurement not supported by market activity included our probability assessments of expected future cash flows related to our acquisition of Breedlove & Associates, LLC, Care Concierge, Inc. and Citrus Lane during the applicable earn-out period, appropriately discounted considering the uncertainties associated with the applicable obligation, and calculated in accordance with the terms of the applicable transaction agreement. As such, the cash portion of the contingent consideration liability has been discounted to reflect the time value of money, and therefore, as the milestone date approaches, the fair value of this liability will increase.
	Preferred Stock Warrants - Preferred stock warrants consist of warrants issued in connection with debt financings. The fair value of the warrants was determined using the Black-Scholes option-pricing model. In conjunction with the closing of the IPO, the warrant exercisable for shares of our Series A-1 Preferred Stock was automatically converted into a warrant exercisable for shares of our common stock, resulting in the reclassification of the related convertible preferred stock warrant liability to additional paid-in capital as the warrant met the criteria for equity classification upon its conversion to a warrant for the purchase of common stock. The warrant liability was re-measured to fair value prior to reclassification to additional paid-in capital. As of December 27, 2014, we had no outstanding warrant liability. Refer to Note 7 - Stockholders’ Equity (Deficit) for a discussion of the methodology used and changes in the fair value of our preferred stock warrants.
	Non-Recurring Fair Value Measurements
	We remeasure the fair value of certain assets and liabilities upon the occurrence of certain events. Such assets are comprised of long-lived assets, including property and equipment, intangible assets and goodwill. For fiscal year ended December 27, 2014, we recorded an intangible asset impairment charge of $2.4 million and a goodwill impairment charge of $33.8 million, each related to our Citrus Lane reporting unit. This adjustment falls within Level 3 of the fair value hierarchy due to the use of significant unobservable inputs to determine fair value. The fair value measurements were determined using a DCF analysis, and the amount and timing of future cash flows within the analysis were based on our most recent operational budgets, long-range strategic plans and other estimates at the time such re-measurements were made. No remeasurement of such assets occurred at December 28, 2013 or December 31, 2012. Other financial instruments not measured or recorded at fair value in the accompanying consolidated balance sheets principally consist of accounts receivable, accounts payable, and accrued liabilities. The estimated fair values of these instruments approximate their carrying values due to their short-term nature.
Business Combinations	Business Combinations
	We determine and allocate the purchase price of an acquired company to the tangible and intangible assets acquired and liabilities assumed based on their fair values as of the business combination date, including identifiable intangible assets, which either arise from a contractual or legal right or are separable from goodwill. We base the fair value of identifiable intangible assets acquired in a business combination on detailed valuations that use information and assumptions provided by management, which consider management’s best estimates of inputs and assumptions that a market participant would use. We allocate any excess purchase price over the fair value of the net tangible and identifiable intangible assets acquired to goodwill. The use of alternative valuation assumptions, including estimated revenue projections, growth rates, cash flows, discount rates, estimated useful lives and probabilities surrounding the achievement of revenue-based milestones, could result in different purchase price allocations and amortization expense in current and future periods. Transaction costs associated with these acquisitions are expensed as incurred through general and administrative costs.
	In those circumstances where an acquisition involves a contingent consideration arrangement, we recognize a liability equal to the fair value of the contingent payments we expect to make as of the acquisition date. We re-measure this liability at each reporting period and record changes in the fair value as a component of operating expenses. Increases or decreases in the fair value of the contingent consideration liability can result from changes in discount periods and rates, as well as changes in the timing and amount of revenue estimates or in the timing or likelihood of achieving revenue-based milestones.
	Results of operations and cash flows of acquired companies are included in our operating results from the date of acquisition.
Software Development Costs	Software Development Costs
	Internal and external software development costs associated with the development of software for internal use are expensed to research and development during the preliminary project stage and capitalized during the application development stage. For fiscal year ended December 27, 2014, costs incurred during application development stage and capitalized totaled $0.9 million. During fiscal years ended December 28, 2013 and December 31, 2012, we believe the substantial majority of our development efforts were either in the preliminary stage of development or were for maintenance of, and minor upgrades and enhancements to internal-use software and, accordingly, application development costs were insignificant.
Equity Method Investments	Equity Method Investment
	During fiscal 2012, we made a 50% investment in Care International Exchange, Inc. (the “Venture”), a venture formed with Magsaysay People Resources Corporation (‘‘Magsaysay’’). The purpose of the Venture is to conduct activities related to a live-in care program with the goal of generating revenue from the placement of foreign-born providers with families, institutions or individuals seeking live-in home care throughout Canada. Our initial investment in the Venture was $50,000, and we and Magsaysay each have a commitment to provide an additional $0.4 million of funding over the next two years. We account for our investment in the Venture using the equity method of accounting based on our voting interest as we have significant influence over the Venture. Accordingly, our share of the income or loss of the Venture is recorded in other income or expense in the accompanying consolidated statements of operations. To date, the operations of the Venture have not been significant.
Goodwill	Goodwill
	Goodwill is recorded as the difference, if any, between the aggregate consideration paid for an acquisition and the fair value of the net tangible and intangible assets acquired. We evaluate goodwill and indefinite lived intangible assets for impairment at the reporting unit level (operating segment or one level below an operating segment) annually or more frequently if we believe indicators of impairment exist. In accordance with the guidance, we are permitted to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If we conclude that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then a two-step goodwill impairment test is performed.
	In performing the test, we utilize the two-step approach prescribed under ASC 350. The first step requires a comparison of the reporting unit against its aggregate carrying value, including goodwill. If the carrying amount exceeds the reporting unit’s carrying value to its fair value. We consider a number of factors to determine the fair value of a reporting unit, including an independent valuation to conduct this test. The valuation is based upon expected future discounted operating cash flows of the reporting unit. We base the discount rate on the weighted average cost of capital, or WACC, of market participants. If the carrying value of a reporting unit exceeds its estimated fair value, we will perform the second step of the goodwill impairment test to measure the amount of impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of a reporting unit’s goodwill to its carrying value. The second step requires us to perform a hypothetical purchase allocation as of the measurement date and estimate the fair value of net tangible and intangible assets. The fair value of intangible assets is determined as described below and is subject to significant judgment.
	Since the fair value of our reporting units was determined by use of the discounted cash flows, or DCF, and the key assumptions that drive the fair value in this model are the WACC, terminal values, growth rates, and the amount and timing of expected future cash flows, significant judgment is applied in determining fair value. If the current economic environment were to deteriorate, this would likely result in a higher WACC because market participants would require a higher rate of return. In the DCF as the WACC increases, the fair value decreases. The other significant factor in the DCF is our projected financial information (i.e., amount and timing of expected future cash flows and growth rates) and if these assumptions were to be adversely impacted, this could result in a reduction of the fair value of this reporting unit.
	We conducted our fiscal 2014 annual impairment test as of September 28, 2014 (the first day of our fourth fiscal quarter). We utilized DCF and market approaches to estimate the fair value of our reporting units as of September 28, 2014 and ultimately used the fair value determined by the DCF in making our impairment test conclusions. We believe we used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. Because Citrus Lane was recently acquired and was operating reasonably close to expectations, we performed a qualitative screen for impairment of that reporting unit as is allowed under ASC 350. As a result of completing Step 1, all of the reporting units had fair values exceeding their carrying values, and as such, Step 2 of impairment test was not required for those reporting units.
	During the fourth quarter of fiscal 2014, primarily as a result of unexpected changes, both internal and external, we determined that indicators of impairment existed at our Citrus Lane Reporting Unit. The fair value of reporting unit was deemed to be below its carrying value and Step 2 of the goodwill impairment test was performed. Step 2 of the goodwill impairment test requires the completion of a hypothetical purchase price allocation to determine the fair value of the implied goodwill.
Amortization and Impairment of Intangible Assets	Amortization and Impairment of Intangible Assets
	We amortize our intangible assets that have finite lives over their estimated useful lives. We use a straight-line method of amortization, unless a method that better reflects the pattern in which the economic benefits of the intangible asset are consumed or otherwise used up can be reliably determined. Amortization is recorded over the estimated useful lives ranging from one to ten years. We review our intangible assets subject to amortization to determine if any adverse conditions exist, or a change in circumstances has occurred that would indicate impairment or a change in the remaining useful life. If the carrying value of an asset exceeds its undiscounted cash flows, we will write-down the carrying value of the intangible asset, or asset group, to its fair value in the period identified. In assessing fair value, we must make assumptions regarding estimated future cash flows and discount rates. If these estimates or related assumptions change in the future, we may be required to record impairment charges. We generally calculate fair value as the present value of estimated future cash flows to be generated by the asset using a risk-adjusted discount rate. If the estimate of an intangible asset’s remaining useful life is changed, we will amortize the remaining carrying value of the intangible asset prospectively over the revised remaining useful life.
	During the fourth quarter of fiscal 2014, in connection with our goodwill impairment analysis, we performed a Step 2 test of recoverability of finite lived intangibles in accordance with ASC 360, indicating that our undiscounted future cash flows would not recover the carrying value of the Citrus Lane proprietary software and trade name intangible assets. We then performed a Step 3 impairment analysis of finite lived intangible assets under ASC 360 and determined that the carrying value of the Citrus Lane proprietary software and trade name exceeded the fair value of those assets as of the end of the fourth quarter and recognized an intangible asset impairment of $2.4 million.
	During the fourth quarter of fiscal 2012, we made the decision to replace the Care.com Europe proprietary software with a new, worldwide, international platform that was to be developed. As a result of this decision we tested the associated asset group for recoverability and concluded that an indicator of impairment did not exist. However, in connection with the decision to migrate the existing technology platform to the new worldwide platform, we concluded the useful life of the technology platform should be reassessed. We revised the useful life to be one year to coincide with our migration plan.
	During the third quarter of fiscal 2013, we made the decision to migrate the PIAP trade name to Care Concierge. As a result of this decision we tested the associated asset group for recoverability and concluded that an indicator of impairment did not exist. However, in connection with the decision to migrate to the new trade name, we concluded the useful life of the PIAP trade name should be reassessed. We revised the useful life to be four months to coincide with our migration plan.
Property and Equipment	Property and Equipment
	Property and equipment are stated at cost, and are depreciated using the straight-line method over the estimated useful life of the assets or, where applicable and if shorter, over the lease term.
	Expenditures for maintenance and repairs are charged to expense as incurred, whereas major betterments are capitalized as additions to property and equipment.
Property, Plant and Equipment, Impairment or Disposal of Long-Lived Assets	In accordance with ASC 360-10-35-15, Property, Plant and Equipment—Impairment or Disposal of Long-Lived Assets, we review the carrying value of long-lived assets whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, then an impairment charge is recognized for the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or the fair value less costs to sell, and are not depreciated. Assets and liabilities that are part of a disposal group and classified as held for sale would be presented separately in the appropriate asset and liability sections of the balance sheet.
Income Taxes	Income Taxes
	We account for income taxes in accordance with ASC 740, Income Taxes. ASC 740 is an asset and liability approach that requires recognition of deferred tax assets and liabilities for the expected future tax consequences attributable to differences between the carrying amounts of assets and liabilities for financial reporting purposes and their respective tax basis, and for operating loss and tax credit carryforwards. ASC 740 requires a valuation allowance against net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.
	We recognize the tax benefit from an uncertain tax position only if it is more likely than not the tax position will be sustained on examination by the tax authorities, based on the technical merits of the position. The tax benefits recognized in the consolidated financial statements from such position are then measured based on the largest benefit that has a greater than 50% likelihood of being realized upon settlement. At December 27, 2014 and December 28, 2013, we did not have any uncertain tax positions.
	Presentation of Taxes in the Consolidated Statements of Operations
	We present taxes that are collected from customers and remitted to government authorities on a net basis in the consolidated statements of operations.
Stock-Based Compensation	Stock-Based Compensation
	We account for all stock-based awards to employees and members of our board of directors, to the extent such awards were issued in connection with their services as directors, in accordance with ASC 718, Compensation-Stock Compensation. ASC 718 requires that all share-based payments, including grants of stock options, be recognized in the statement of operations as an operating expense based on their fair value. In accordance with ASC 718, we recognize the compensation cost of share-based awards on a straight-line basis over the vesting period of the award.
	We use the Black-Scholes-Merton option-pricing model to determine the fair value for option awards. In valuing our option awards, we make assumptions about risk-free interest rates, dividend yields, volatility, and weighted-average expected lives, including estimated forfeiture rates. Risk-free interest rates are derived from U.S. Treasury securities as of the option award grant date. Expected dividend yield is based on our historical dividend payments, which have been zero to date. The expected volatility for our common stock is estimated taking the average historic price volatility for a group of similarly situated publicly traded companies based on daily price observations over a period equivalent to the expected term of the stock option grants. These publicly traded companies were selected based on comparable characteristics to us and consist of several companies in the technology industry that are similar in enterprise value, stage of life cycle, risk profile, financial leverage and with historical share price information sufficient to meet the expected life of our stock-based awards. We estimate the weighted-average expected life of the option awards as the average of the option vesting schedule and the term of the award, since we do not have sufficient historical exercise data to provide a reasonable basis upon which to estimate expected term due to the limited period of time share-based awards have been exercisable. The term of the award is estimated using the simplified method, as awards are plain vanilla option awards. Forfeiture rates are estimated using historical actual forfeiture trends as well as our judgment of future forfeitures. These rates are evaluated at least quarterly and any change in compensation expense is recognized in the period of the change. The estimation of option awards that will ultimately vest requires judgment, and to the extent actual results or updated estimates differ from our current estimates, such amounts will be recorded as a cumulative adjustment in the period the estimates are revised. Actual results, and future changes in estimates, may differ substantially from management’s current estimates.
	Stock-based awards issued to non-employees, are accounted for using the fair value method in accordance with ASC 505-50, Equity-Based Payments to Non-Employees. These stock options are typically granted in exchange for consulting services to be rendered, and vest over periods of up to four years. In accordance with authoritative guidance, the fair value of non-employee stock-based awards is estimated on the date of grant, and subsequently revalued at each reporting period over their vesting period using the Black-Scholes option-pricing model.
Advertising Costs	Advertising Costs
	We expense advertising costs as incurred when the advertisement is run.
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income
	As of December 27, 2014 and December 28, 2013, accumulated other comprehensive income was comprised solely of cumulative foreign currency translation adjustments.
Recently Issued and Adopted Accounting Pronouncements	Recently Issued and Adopted Accounting Pronouncements
	In January 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2015-01, Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items ("ASU 2015-01”), which eliminates the requirement of Extraordinary Items to be separately classified on the income statement.  ASU 2015-01 is effective for annual periods ending after December 15, 2015 and for annual and interim periods thereafter.  Early application is permitted.  The adoption of ASU 2015-01 is not expected to have a material effect on our condensed consolidated financial statements or disclosures.
	In August 2014, the FASB issued Accounting Standards Update No. 2014-15, Presentation of Financial Statements - Going Concern (“ASU 2014-15”), which requires management to evaluate, at each annual and interim reporting period, whether there are conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date the financial statements are issued and provide related disclosures.  ASU 2014-15 is effective for annual periods ending after December 15, 2016 and interim periods thereafter.  Early application is permitted.  The adoption of ASU 2014-15 is not expected to have a material effect on our condensed consolidated financial statements or disclosures.
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for us in our fiscal year 2018. Early application is not permitted. We are evaluating the effect that ASU 2014-09 will have on our consolidated financial statements and related disclosures. The standard permits the use of either the retrospective or cumulative effect transition method. We have not yet selected a transition method nor have we determined the effect of the standard on our ongoing financial reporting.
	In April 2014, the FASB issued ASU No. 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity (“ASU 2014-08”), to reduce diversity in practice for reporting discontinued operations. Under the previous guidance, any component of an entity that was a reportable segment, an operating segment, a reporting unit, a subsidiary, or an asset group was eligible for discontinued operations presentation. The revised guidance only allows disposals of components of an entity that represent a strategic shift (e.g., disposal of a major geographical area, a major line of business, a major equity method investment, or other major parts of an entity) and that have a major effect on a reporting entity’s operations and financial results to be reported as discontinued operations. The revised guidance also requires expanded disclosure in the financial statements for discontinued operations as well as for disposals of significant components of an entity that do not qualify for discontinued operations presentation. The updated guidance is effective for periods beginning after December 15, 2014. We currently do not have operations that are reported as discontinued operations and do not expect the adoption of this guidance to have a material effect on our financial position, results of operations, or cash flows.
	In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carry forward, a Similar Tax Loss, or a Tax Credit Carry forward Exists (“ASU 2013-11”). ASU 2013-11 states that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carry forward, a similar tax loss, or a tax credit carry forward, except in certain situations. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption and retrospective application are permitted. The amendments should be applied prospectively to all unrecognized tax benefits that exist at the effective date. The adoption of this amendment did not have a material impact on our condensed consolidated financial statements.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 27, 2014
Accounting Policies [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table presents information about our assets and liabilities measured at fair value on a recurring basis as of December 27, 2014 and December 28, 2013 and indicates the fair value hierarchy of the valuation techniques we utilized to determine such fair value (in thousands):
		December 27, 2014										December 28, 2013
		Fair Value Measurements Using Input Types										Fair Value Measurements Using Input Types
		Level 1			Level 2			Level 3		Total		Level 1		Level 2		Level 3		Total
	Assets:
	Money market mutual funds and certificates of deposit	$	15,656		$	—		$	—	$	15,656	$	15,085	$	—	$	—	$	15,085
	Total assets	$	15,656		$	—		$	—	$	15,656	$	15,085	$	—	$	—	$	15,085
	Liabilities:
	Contingent acquisition consideration	$	—		$	—		$	17,952	$	17,952	$	—	$	—	$	10,630	$	10,630
	Preferred stock warrants	—			—			—		—		—		—		362		362
	Total liabilities	$	—		$	—		$	17,952	$	17,952	$	—	$	—	$	10,992	$	10,992
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The following table sets forth a summary of changes in the fair value of our contingent acquisition consideration and preferred stock warrants which represent recurring measurements that are classified within Level 3 of the fair value hierarchy wherein fair value is estimated using significant unobservable inputs (in thousands):
		December 27, 2014						December 28, 2013
		Contingent Acquisition			Preferred Stock Warrants			Contingent Acquisition		Preferred Stock Warrants
		Consideration						Consideration
	Beginning balance	$	10,630		$	362		$	9,288	$	247
	Contingent consideration liability recorded in connection with Citrus Lane acquisition	14,510			—			—		—
	Increase in fair value included in earnings	3,158			606			1,342		115
	Reclassification to permanent equity	(4,878		)	(968		)	—		—
	Contingent acquisition consideration payments	(5,468		)	—			—		—
	Ending balance	$	17,952		$	—		$	10,630	$	362
Property, Plant and Equipment	The following table presents the detail of property and equipment, net for the periods presented (in thousands):
		December 27,			December 28,
		2014			2013
	Computer equipment	$	2,476		$	1,444
	Furniture and fixtures	1,708			1,154
	Software	1,066			199
	Leasehold improvements	3,137			183
	Total	8,387			2,980
	Less accumulated depreciation	(2,064		)	(1,427		)
	Property and equipment, net	$	6,323		$	1,553
	Property and equipment are depreciated over the following estimated useful lives:
		Estimated Useful Life
	Computer equipment	3 years
	Leasehold improvements	Lesser of asset life or lease term
	Furniture and fixtures	3 years
	Software	3 years

Business_Acquisitions_Tables

Business Acquisitions (Tables)	12 Months Ended
	Dec. 27, 2014
Business Combinations [Abstract]
Recognized Identified Assets Acquired	A summary of the preliminary purchase price allocation for the acquisition of Citrus Lane is as follows (in thousands):
	Total purchase consideration
	Cash	$	22,881
	Fair value of common stock	3,844
	Fair value of contingent acquisition consideration	15,600
	Fair value of stock options exchanged	1,026
	Total purchase price	$	43,351
	Allocation of the purchase consideration
	Tangible assets	$	2,865
	Liabilities assumed	(4,098		)
	Identifiable intangible assets	4,600
	Deferred tax liabilities	(1,855		)
	Goodwill	41,839
	Total purchase price allocation	$	43,351
	The following table summarizes the components of the purchase price and purchase price allocation for the 2012 acquisitions (in thousands):
			Breedlove				Betreut			PIAP
	Total purchase consideration:
	Cash		$	23,076			$	1,099		$	1,419
	Fair value of preferred and common stock issued		21,912				22,174			—
	Fair value of contingent consideration		8,911				—			138
	Total purchase consideration		$	53,899			$	23,273		$	1,557
	Allocation of purchase consideration:
	Cash		$	—			$	310		$	(21	)
	Unbilled receivables		597				—			347
	Accounts receivable		—				250			8
	Other assets		273				178			35
	Deferred tax liabilities		—				(1,139		)	—
	Other current liabilities		(187		)		(476		)	(770		)
	Identifiable intangible assets (a)		13,640				3,720			1,210
	Goodwill		39,576				20,430			748
	Purchase price		$	53,899			$	23,273		$	1,557
	(a) The following are the identifiable intangible assets acquired and their respective weighted average useful lives (in thousands):
Schedule of Finite-Lived Intangible Assets Acquired	The estimated fair values for specifically identifiable intangible assets acquired are as follows (in thousands):
						Weighted-average amortization period
						(in years)
	Proprietary software	$	3,000			7
	Trade-names	1,600				10
	Total purchase price	$	4,600
		Breedlove						Betreut					PIAP
		Amount				Weighted- Average Life (Years)		Amount			Weighted- Average Life (Years)		Amount		Weighted- Average Life (Years)
	Trademarks and trade names	$	3,610			3		$	650		7		$	240	5
	Proprietary software	2,610				5		1,950			5		190		5
	Website	40				4		—			—		10		2
	Training materials	—				—		—			—		30		3
	Non-compete agreements	60				5		80			3		—		—
	Leasehold interests	170				6		—			—		—		—
	Caregiver relationships	—				—		270			3		50		3
	Customer relationships	7,150				4		770			4		690		10
	Total	$	13,640			4		$	3,720		5		$	1,210	8
Pro Forma Information	The pro forma financial information does not reflect any adjustments for anticipated synergies resulting from the acquisition and is not necessarily indicative of the operating results that would have actually occurred had the transaction been consummated on January 1, 2013.
		Pro Forma for the Years Ended
		27-Dec-14				28-Dec-13
	(in millions)
	Revenue	$	121.7			$	87.2
	Net loss	$	(45.8	)		$	(35.0	)

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 27, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents the change in goodwill for the periods presented (in thousands):
	Balance as of December 28, 2013	$	62,686
	Citrus Lane acquisition	41,839
	Consmr acquisition	488
	Impairment of goodwill	(33,788		)
	Effect of currency translation	(2,540		)
	Balance as of December 27, 2014	$	68,685
Schedule of Goodwill Impairment Loss	roll forward of accumulated goodwill impairment losses for the year ended December 27, 2014 is as follows:
	Balance as of December 28, 2013	$	—
	Citrus Lane impairment	33,788
	Balance as of December 27, 2014	$	33,788
Schedule of Finite-Lived Intangible Assets	The following table presents the detail of intangible assets for the periods presented (dollars in thousands):
		Gross Carrying Value			Accumulated Amortization			Net Carrying Value		Weighted-Average Remaining Life (Years)
	27-Dec-14
	Indefinite lived intangibles	$	242		$	—		$	242	N/A
	Trademarks and trade names	5,281			(3,377		)	1,904		5.2
	Proprietary software	4,942			(3,351		)	1,591		2.5
	Website	1,150			(34		)	1,116		6.5
	Training materials	30			(20		)	10		1
	Non-compete agreements	137			(94		)	43		2
	Leasehold interests	170			(61		)	109		4.4
	Caregiver relationships	312			(252		)	60		0.7
	Customer relationships	8,857			(4,967		)	3,890		2.9
	Total	$	21,121		$	(12,156	)	$	8,965
	December 28, 2013:
	Indefinite lived intangibles	$	242		$	—		$	242	N/A
	Trademarks and trade names	4,561			(2,096		)	2,465		2.5
	Proprietary software	5,184			(2,952		)	2,232		3.5
	Website	50			(19		)	31		2.3
	Training materials	30			(10		)	20		2
	Non-compete agreements	148			(61		)	87		2.6
	Leasehold interests	170			(36		)	134		5.4
	Caregiver relationships	346			(164		)	182		1.6
	Customer relationships	8,953			(2,928		)	6,025		3.5
	Total	$	19,684		$	(8,266	)	$	11,418
Schedule of Indefinite-Lived Intangible Assets	The following table presents the detail of intangible assets for the periods presented (dollars in thousands):
		Gross Carrying Value			Accumulated Amortization			Net Carrying Value		Weighted-Average Remaining Life (Years)
	27-Dec-14
	Indefinite lived intangibles	$	242		$	—		$	242	N/A
	Trademarks and trade names	5,281			(3,377		)	1,904		5.2
	Proprietary software	4,942			(3,351		)	1,591		2.5
	Website	1,150			(34		)	1,116		6.5
	Training materials	30			(20		)	10		1
	Non-compete agreements	137			(94		)	43		2
	Leasehold interests	170			(61		)	109		4.4
	Caregiver relationships	312			(252		)	60		0.7
	Customer relationships	8,857			(4,967		)	3,890		2.9
	Total	$	21,121		$	(12,156	)	$	8,965
	December 28, 2013:
	Indefinite lived intangibles	$	242		$	—		$	242	N/A
	Trademarks and trade names	4,561			(2,096		)	2,465		2.5
	Proprietary software	5,184			(2,952		)	2,232		3.5
	Website	50			(19		)	31		2.3
	Training materials	30			(10		)	20		2
	Non-compete agreements	148			(61		)	87		2.6
	Leasehold interests	170			(36		)	134		5.4
	Caregiver relationships	346			(164		)	182		1.6
	Customer relationships	8,953			(2,928		)	6,025		3.5
	Total	$	19,684		$	(8,266	)	$	11,418
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	As of December 27, 2014, the estimated future amortization expense related to current intangible assets for future fiscal years was as follows (in thousands):
	2015	$	3,886
	2016	2,222
	2017	806
	2018	461
	2019	400
	Thereafter	948
	Total	$	8,723

Accrued_Expenses_and_Other_Cur1

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 27, 2014
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	The following table presents the detail of accrued expenses and other current liabilities for the periods presented (in thousands):
		December 27,		December 28,
		2014		2013
	Payroll and compensation	$	1,722	$	3,134
	Tax-related expense	1,609		372
	Marketing expenses	3,385		1,028
	Other accrued expenses	6,016		2,489
	Total accrued expenses and other current liabilities	$	12,732	$	7,023

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 27, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Commitments for Operating Leases	At December 27, 2014, minimum future lease commitments under all non-cancelable operating leases (including rent escalation clauses) were as follows (in millions):
		Payments Due by Period
		Total		Less Than 1 Year		1-3 Years		4-5 Years		Thereafter
	Operating lease obligations	$	47.3	$	4.2	$	8.7	$	9.6	$	24.8

Stockholders_Equity_Deficit_Ta

Stockholders' Equity (Deficit) (Tables)	12 Months Ended
	Dec. 27, 2014
Equity [Abstract]
Schedule of Stock by Class	As of December 27, 2014, we had reserved the following shares of common stock for future issuance in connection with the following (in thousands):
		December 27, 2014
	Contingent consideration payable in common stock	297
	Options issued and outstanding	4,270
	Options available for grant under stock option plans	3,062
	Total	7,629

Stock_Option_Plans_and_StockBa1

Stock Option Plans and Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 27, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity	A summary of stock option activity for the year ended December 27, 2014 was as follows (in thousands for shares and intrinsic value):
		Number of Shares			Weighted-Average Remaining Contractual Term (Years)		Weighted-Average Exercise Price			Aggregate Intrinsic Value
	Outstanding as of December 28, 2013	3,439			7.98		$	4.28		$	27,148
	Granted	1,554					11.15
	Canceled and forfeited	(503	)				8.16
	Exercised	(220	)				4.51
	Outstanding as of December 27, 2014	4,270			7.17		6.47			14,373
	Options vested and exercisable as of December 27, 2014	2,381			6.25		4.04			11,194
	Options vested and expected to vest as of December 27, 2014 (1)	4,194			7.15		$	6.39		$	14,283
	(1) Options expected to vest reflect an estimated forfeiture rate
Assumptions Used to Estimate Fair Value of Options Granted	The following table presents the assumptions used to estimate the fair value of options granted during the periods presented:
		Fiscal Year Ended
		December 27,		December 28,
		2014		2013
	Risk-free interest rate	1.81 - 1.95%		1.23 - 2.00%
	Expected term (years)	6.25		6.25
	Volatility	47.1 - 56.3%		44.60%
	Expected dividend yield	—		—
Summary of Stock-based Compensation in Accompanying Consolidated Statements of Operations	The following table summarizes stock-based compensation in our accompanying consolidated statements of operations (in thousands):
		Fiscal Year Ended
		December 27,				December 28,			December 31,
		2014				2013			2012
	Cost of revenue	$	183			$	161		$	159
	Selling and marketing	763				348			369
	Research and development	624				356			213
	General and administrative	4,235				997			1,211
	Total stock-based compensation	$	5,805			$	1,862		$	1,952

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	12 Months Ended
	Dec. 27, 2014
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):
		Fiscal Year Ended
		December 27,				December 28,			December 31,
		2014				2013			2012
	Net Loss	$	(80,292	)		$	(28,296	)	$	(20,420	)
	Accretion of preferred stock	(4		)		(57		)	(48		)
	Net loss attributable to common stockholders	$	(80,296	)		$	(28,353	)	$	(20,468	)
	Net loss per share attributable to common stockholders:
	Basic and diluted	$	(2.77	)		$	(9.45	)	$	(7.97	)
	Weighted-average shares used to compute net loss per share attributable to common stockholders:
	Basic and diluted	28,941				3,000			2,568
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following equity shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	Redeemable convertible preferred stock	—			21,299			21,299
	Stock options	4,270			3,439			2,706
	Preferred stock warrants	—			41			41
	Common stock warrants	—			40			40

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 27, 2014
Income Tax Disclosure [Abstract]
Schedule of Income before Income Tax, Domestic and Foreign	The following table presents domestic and foreign components of loss before income taxes for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	United States	(75,463	)		(22,182	)		(16,656	)
	Foreign	(5,581	)		(5,760	)		(4,081	)
	Total loss before income taxes	(81,044	)		(27,942	)		(20,737	)
Components of Income Tax Expense (Benefit)	The following table presents the components of the (benefit from) provision for income taxes for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,				December 28,				December 31, 2012
		2014				2013
	Current:
	Federal	$	—			$	—			$	—
	State	108				70				28
	Foreign	33				—				—
	Total current provision for income taxes	141				70				28
	Deferred:
	Federal	(757		)		626				374
	State	(136		)		49				63
	Foreign	—				(391		)		(782		)
	Total deferred tax (benefit) provision	(893		)		284				(345		)
	Total (benefit from) provision for income taxes	$	(752	)		$	354			$	(317	)
Reconciliation of the Statutory Federal Rate and Effective Tax Rate	The following table presents a reconciliation of the statutory federal rate, and our effective tax rate, for the periods presented:
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	U.S. federal taxes at statutory rate	34	%		34	%		34	%
	State income taxes, net of federal benefit	—			2			3
	Permanent differences	(2	)		(3	)		(4	)
	Impairment of goodwill and intangible assets	(14	)		—			—
	Foreign rate differential	—			(1	)		(1	)
	Change in valuation allowance - U.S.	(15	)		(28	)		(31	)
	Change in valuation allowance - foreign	(2	)		(5	)		(2	)
	Rate change	—			—			3
	Total	1	%		(1	)%		2	%
Significant Components of Deferred Tax Assets and Liabilities	The following table presents the significant components of our deferred tax assets and liabilities for the periods presented (in thousands):
		Fiscal Year Ended
		December 27,				December 28,
		2014				2013
	Deferred tax assets
	Net operating loss carryforwards	$	40,790			$	25,307
	Fixed assets	—				76
	Accrued expenses	1,696				28
	Stock-based compensation	1,618				140
	U.S. definite lived intangibles	3,538				1,609
	Other temporary differences	33				475
	Total deferred tax assets	47,675				27,635
	Valuation allowance	(46,619		)		(27,215		)
	Net deferred tax assets	1,056				420
	Deferred tax liabilities
	Foreign intangibles	(224		)		(386		)
	U.S. goodwill	(2,072		)		(1,112		)
	Fixed assets	(832		)		—
	Other	—				(34		)
	Total deferred tax liabilities	(3,128		)		(1,532		)
	Net deferred tax liabilities	$	(2,072	)		$	(1,112	)

Segment_and_Geographical_Infor1

Segment and Geographical Information (Tables)	12 Months Ended
	Dec. 27, 2014
Segment Reporting [Abstract]
Revenue from External Customers by Product Lines	we have determined that we have a single operating and reportable segment comprised of the following product lines (dollars in thousands):
		Fiscal Year Ended
		December 27,			December 28,				December 31,
		2014			2013				2012
	Consumer matching	$	82,031		$	61,645			$	41,409
	Consumer payments	14,493			10,770				3,133
	Merchandise	6,001			—				—
	Other	14,188			9,072				3,951
	Total revenue	$	116,713		$	81,487			$	48,493
Schedule of Revenue by Geographic Location	The following table summarizes total revenue generated by our geographic locations (dollars in thousands):
		Fiscal Year Ended
		December 27,			December 28,				December 31,
		2014			2013				2012
	United States	$	108,048		$	74,800			$	45,514
	International	8,665			6,687				2,979
	Total revenue	$	116,713		$	81,487			$	48,493
		Fiscal Year Ended
		December 27,		December 28,			December 31,
		2014		2013			2012
		(As a percentage of revenue)
	United States	93	%	92	%		94	%
	International	7	%	8	%		6	%
	Total revenue	100	%	100	%		100	%

Other_Expense_Net_Tables

Other Expense, Net (Tables)	12 Months Ended
	Dec. 27, 2014
Other Income and Expenses [Abstract]
Schedule of Other Expense, Net	Other expense, net consisted of the following (in thousands):
		Fiscal Year Ended
		December 27,			December 28,			December 31,
		2014			2013			2012
	Interest income	$	86		$	47		$	48
	Interest expense	(43		)	(17		)	(3		)
	Other expense, net	(3,899		)	(321		)	(92		)
	Total other expense, net	$	(3,856	)	$	(291	)	$	(47	)

Quarterly_Financial_Informatio1

Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 27, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]	The table below sets forth unaudited selected quarterly financial data for each of the last two fiscal years (dollars in thousands, except per share data).
		For the Quarter Ended
		December 27, 2014			September 27, 2014			June 28, 2014			March 29, 2014
	Total revenue	$	33,552		$	32,054		$	25,836		$	25,271
	Cost of revenue	9,729			9,132			5,713			5,771
	Operating loss	(40,255		)	(14,987		)	(9,633		)	(12,313		)
	Net loss	(40,420		)	(14,453		)	(9,875		)	(15,544		)
	Net loss attributable to common stockholders	(40,420		)	(14,453		)	(9,875		)	(15,548		)
	Net loss per common share—basic and diluted	$	(1.28	)	$	(0.46	)	$	(0.32	)	$	(0.71	)
		For the Quarter Ended
		December 28, 2013			September 28, 2013			June 30, 2013			March 31, 2013
	Total revenue	$	22,511		$	21,681		$	19,133		$	18,162
	Cost of revenue	4,852			5,158			4,607			4,227
	Operating loss	(3,891		)	(11,469		)	(5,906		)	(6,385		)
	Net loss	(3,631		)	(11,732		)	(6,114		)	(6,819		)
	Net loss attributable to common stockholders	(3,646		)	(11,746		)	(6,128		)	(6,833		)
	Net loss per common share—basic and diluted	$	(1.16	)	$	(3.86	)	$	(2.08	)	$	(2.35	)

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) (USD $)	Dec. 27, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Assets:
Total assets	$15,656	$15,085
Liabilities:
Total liabilities	17,952	10,992
Money Market Funds
Assets:
Money market mutual funds and certificates of deposit	15,656	15,085
Level 1
Assets:
Total assets	15,656	15,085
Liabilities:
Total liabilities	0	0
Level 1 | Money Market Funds
Assets:
Money market mutual funds and certificates of deposit	15,656	15,085
Level 2
Assets:
Total assets	0	0
Liabilities:
Total liabilities	0	0
Level 2 | Money Market Funds
Assets:
Money market mutual funds and certificates of deposit	0	0
Level 3
Assets:
Total assets	0	0
Liabilities:
Total liabilities	17,952	10,992
Level 3 | Money Market Funds
Assets:
Money market mutual funds and certificates of deposit	0	0
Contingent acquisition consideration
Liabilities:
Contingent acquisition consideration	17,952	10,630
Contingent acquisition consideration | Level 1
Liabilities:
Contingent acquisition consideration	0	0
Contingent acquisition consideration | Level 2
Liabilities:
Contingent acquisition consideration	0	0
Contingent acquisition consideration | Level 3
Liabilities:
Contingent acquisition consideration	17,952	10,630
Preferred stock warrants
Liabilities:
Preferred stock warrants	0	362
Preferred stock warrants | Level 1
Liabilities:
Preferred stock warrants	0	0
Preferred stock warrants | Level 2
Liabilities:
Preferred stock warrants	0	0
Preferred stock warrants | Level 3
Liabilities:
Preferred stock warrants	$0	$362

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Fair Value of Contingent Consideration and Preferred Stock Warrants - Recurring Measurements Classified as Level 3 (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Contingent Acquisition Consideration
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation
Beginning balance	$10,630	$9,288
Contingent consideration liability recorded in connection with Citrus Lane acquisition	14,510
Increase in fair value included in earnings	3,158	1,342
Reclassification to permanent equity	-4,878	0
Contingent acquisition consideration payments	-5,468
Ending balance	17,952	10,630
Preferred Stock Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation
Beginning balance	362	247
Contingent consideration liability recorded in connection with Citrus Lane acquisition	0
Increase in fair value included in earnings	606	115
Reclassification to permanent equity	-968	0
Ending balance	$0	$362

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Property and Equipment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$8,387	$2,980
Less accumulated depreciation	-2,064	-1,427
Property and equipment, net	6,323	1,553
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,476	1,444
Estimated Useful Life	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,708	1,154
Estimated Useful Life	3 years
Software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,066	199
Estimated Useful Life	3 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$3,137	$183

Summary_of_Significant_Account6

Summary of Significant Accounting Policies - Additional Information (Details) (USD $)	12 Months Ended			3 Months Ended	0 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012	Sep. 28, 2013	Jul. 17, 2014
Entity Information [Line Items]
Foreign currency transaction losses	$1,000,000	$100,000	$100,000
Contingent consideration expense	900,000	1,342,000	239,000
Goodwill impairment charge	33,788,000
Capitalized software development costs	900,000
Depreciation	900,000	700,000	300,000
Advertising expense	30,500,000	22,300,000	14,300,000
Minimum
Entity Information [Line Items]
Fiscal period duration	364 days
Estimated useful lives, intangible assets	1 year
Maximum
Entity Information [Line Items]
Fiscal period duration	371 days
Estimated useful lives, intangible assets	10 years
Care International Exchange, Inc.
Entity Information [Line Items]
Ownership percentage			50.00%
Equity method investments, initial investment			50,000
Commitment for additional funding			400,000
Commitment for additional funding, term			2 years
PIAP
Entity Information [Line Items]
Contingent consideration expense	0	600,000
PIAP | Trade Names
Entity Information [Line Items]
Estimated useful life				4 months
Citrus Lane Inc
Entity Information [Line Items]
Contingent consideration expense	17,500,000				600,000
Potential earn out payment, percentage	100.00%
Intangible asset impairment charge	2,400,000
Goodwill impairment charge	$33,800,000
Betreut | Proprietary Software
Entity Information [Line Items]
Estimated useful life			1 year
Credit Concentration Risk
Entity Information [Line Items]
Number of customers	1	0
Percentage of total accounts receivables	15.00%
Customer Concentration Risk
Entity Information [Line Items]
Number of customers	0	0

Business_Acquisitions_Addition

Business Acquisitions - Additional Information (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	6 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	5 Months Ended	0 Months Ended	6 Months Ended	0 Months Ended
Share data in Millions, except Per Share data, unless otherwise specified	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012	Jul. 17, 2014	Dec. 27, 2014	Mar. 03, 2014	Jun. 30, 2013	Aug. 03, 2012	Dec. 31, 2012	Jul. 05, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 21, 2012
Business Acquisition [Line Items]
Revenue	$33,552,000	$32,054,000	$25,836,000	$25,271,000	$22,511,000	$21,681,000	$19,133,000	$18,162,000	$116,713,000	$81,487,000	$48,493,000
Net loss	40,420,000	14,453,000	9,875,000	15,544,000	3,631,000	11,732,000	6,114,000	6,819,000	80,292,000	28,296,000	20,420,000
Goodwill	68,685,000				62,686,000				68,685,000	62,686,000			68,685,000
Volatility										44.60%
Expected term (years)									6 years 90 days	6 years 90 days
Expected dividend yield									0.00%	0.00%
Contingent consideration expense									900,000	1,342,000	239,000
Increase in fair value of redeemable preferred stock									2,300,000	200,000
Deferred taxes related to fair value of the acquired intangible assets	224,000				386,000				224,000	386,000			224,000
Value of revenue-based earn-outs payable	7,267,000				5,166,000				7,267,000	5,166,000			7,267,000
Citrus Lane Inc
Business Acquisition [Line Items]
Cash consideration												22,881,000
Equity consideration, shares												0.4
Equity consideration, value												3,800,000
Cash consideration, contingent amount												16,400,000
Cash consideration, contingent amount, fair value												14,500,000
Equity consideration, contingent amount, shares												0.1
Equity consideration, contingent amount, value												1,100,000
Fair value of common stock or stock options exchanged												1,000,000
Acquisition costs												1,800,000
Escrow deposit												5,000,000
Revenue													6,000,000
Net loss													42,900,000
Intangible asset cash flow forecast, discount rate									22.50%
Goodwill												41,839,000
Fair value of options												1,400,000
Share-based compensation expense, acceleration of vesting									1,400,000
Contingent acquisition consideration												15,200,000
Contingent consideration expense									17,500,000			600,000
Employee bonus pool												1,400,000
Compensation									500,000
Consideration transferred												15,600,000
Identifiable intangible assets												4,600,000
Citrus Lane Inc | Earn Out Payment
Business Acquisition [Line Items]
Potential periodic earn out payments												8,200,000
Employee bonus pool												300,000
Citrus Lane Inc | Based Solely on Individual
Business Acquisition [Line Items]
Employee bonus pool												1,100,000
Consumr
Business Acquisition [Line Items]
Period for recognition														1 year
Consideration transferred														600,000
Purchase Price held back														100,000
BigTent
Business Acquisition [Line Items]
Cash consideration															700,000
Identifiable intangible assets							500,000								500,000
Weighted-average amortization period (in years)															6 years 7 months 6 days
Breedlove
Business Acquisition [Line Items]
Cash consideration																23,076,000
Cash consideration, contingent amount																5,000,000
Cash consideration, contingent amount, fair value																3,900,000
Fair value of common stock or stock options exchanged																21,912,000
Revenue																	3,100,000
Net loss																	100,000
Goodwill																39,576,000
Contingent acquisition consideration																8,911,000
Consideration transferred																53,899,000
Identifiable intangible assets																13,640,000
Weighted-average amortization period (in years)																4 years
Merger related transaction costs											100,000
Deferred taxes related to fair value of the acquired intangible assets																0
Betreut
Business Acquisition [Line Items]
Cash consideration																		1,099,000
Fair value of common stock or stock options exchanged																		22,174,000
Revenue																			2,900,000
Net loss																			1,800,000
Goodwill																		20,430,000
Contingent acquisition consideration																		0
Consideration transferred																		23,273,000
Identifiable intangible assets																		3,720,000
Weighted-average amortization period (in years)																		5 years
Merger related transaction costs											400,000
PIAP
Business Acquisition [Line Items]
Cash consideration																				1,419,000
Fair value of common stock or stock options exchanged																				0
Goodwill											748,000						748,000		748,000	748,000
Contingent acquisition consideration																					138,000
Contingent consideration expense									0	600,000
Consideration transferred																				1,557,000
Identifiable intangible assets											1,210,000						1,210,000		1,210,000	1,210,000
Weighted-average amortization period (in years)																				8 years
Merger related transaction costs											100,000
Cash withheld as security for indemnification obligations																				200,000
Value of revenue-based earn-outs payable											100,000						100,000		100,000	100,000
PIAP | Earn Out Payment
Business Acquisition [Line Items]
Potential periodic earn out payments																				700,000
Minimum | Breedlove
Business Acquisition [Line Items]
Intangible asset cash flow forecast, discount rate																12.90%
Minimum | Betreut
Business Acquisition [Line Items]
Intangible asset cash flow forecast, discount rate																		16.50%
Minimum | PIAP
Business Acquisition [Line Items]
Intangible asset cash flow forecast, discount rate																				17.20%
Maximum | Breedlove
Business Acquisition [Line Items]
Intangible asset cash flow forecast, discount rate																13.00%
Maximum | Betreut
Business Acquisition [Line Items]
Intangible asset cash flow forecast, discount rate																		17.30%
Maximum | PIAP
Business Acquisition [Line Items]
Intangible asset cash flow forecast, discount rate																				17.90%
Series E Preferred Stock | Breedlove
Business Acquisition [Line Items]
Equity consideration, shares																1.7
Equity consideration, value																21,900,000
Equity consideration, contingent amount, shares																0.4
Equity consideration, contingent amount, value																5,000,000
Series D-1 Preferred Stock | Betreut
Business Acquisition [Line Items]
Equity consideration, shares																		1.8
Equity consideration, value																		19,300,000
Common Stock | Betreut
Business Acquisition [Line Items]
Equity consideration, shares																		0.5
Equity consideration, value																		2,900,000
Employee Stock Option | Citrus Lane Inc
Business Acquisition [Line Items]
Fair value of common stock or stock options exchanged												$1,026,000
Period for recognition												2 years 7 months 6 days
Risk-free interest rate												1.80%
Volatility												49.40%
Expected term (years)												5 years 4 months 24 days
Expected dividend yield												0.00%
Weighted average grant date fair value												$9.34

Business_Acquisitions_Purchase

Business Acquisitions - Purchase Price Allocation - Citrus Lane (Details) (USD $)	0 Months Ended
In Thousands, unless otherwise specified	Jul. 17, 2014	Dec. 27, 2014	Dec. 28, 2013
Business Acquisition [Line Items]
Goodwill		$68,685	$62,686
Citrus Lane Inc
Business Acquisition [Line Items]
Cash	22,881
Fair value of common stock or stock options exchanged	1,000
Fair value of contingent acquisition consideration	15,600
Purchase price	43,351
Tangible assets	2,865
Liabilities assumed	-4,098
Identifiable intangible assets	4,600
Deferred tax liabilities	-1,855
Goodwill	41,839
Citrus Lane Inc | Common Stock
Business Acquisition [Line Items]
Fair value of common stock or stock options exchanged	3,844
Stock options | Citrus Lane Inc
Business Acquisition [Line Items]
Fair value of common stock or stock options exchanged	$1,026

Business_Acquisitions_Identifi

Business Acquisitions - Identifiable Intangible Assets Acquired - Citrus Lane (Details) (Citrus Lane Inc, USD $)	0 Months Ended
In Thousands, unless otherwise specified	Jul. 17, 2014	Jul. 17, 2014
Business Acquisition [Line Items]
Identifiable intangible assets acquired	$4,600	$4,600
Proprietary Software
Business Acquisition [Line Items]
Identifiable intangible assets acquired	3,000	3,000
Weighted-average amortization period (in years)	7 years
Trade Names
Business Acquisition [Line Items]
Identifiable intangible assets acquired	$1,600	$1,600
Weighted-average amortization period (in years)	10 years

Business_Acquisitions_Pro_Form

Business Acquisitions - Pro Forma Financial Information - Citrus Lane (Details) (Citrus Lane Inc, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Citrus Lane Inc
Business Acquisition [Line Items]
Revenue	$121.70	$87.20
Net loss	($45.80)	($35)

Business_Acquisitions_Purchase1

Business Acquisitions - Purchase Price Allocation for 2012 Business Acquisitions (Details) (USD $)	0 Months Ended
In Thousands, unless otherwise specified	Aug. 03, 2012	Jul. 05, 2012	Dec. 31, 2012	Dec. 27, 2014	Dec. 28, 2013	Dec. 21, 2012
Business Acquisition [Line Items]
Goodwill				$68,685	$62,686
Breedlove
Business Acquisition [Line Items]
Cash	23,076
Fair value of preferred and common stock issued	21,912
Fair value of contingent consideration	8,911
Consideration transferred	53,899
Cash	0
Unbilled receivables	597
Accounts receivable	0
Other assets	273
Deferred tax liabilities	0
Other current liabilities	-187
Identifiable intangible assets	13,640
Goodwill	39,576
Purchase price	53,899
Betreut
Business Acquisition [Line Items]
Cash		1,099
Fair value of preferred and common stock issued		22,174
Fair value of contingent consideration		0
Consideration transferred		23,273
Cash		310
Unbilled receivables		0
Accounts receivable		250
Other assets		178
Deferred tax liabilities		-1,139
Other current liabilities		-476
Identifiable intangible assets		3,720
Goodwill		20,430
Purchase price		23,273
PIAP
Business Acquisition [Line Items]
Cash			1,419
Fair value of preferred and common stock issued			0
Fair value of contingent consideration						138
Consideration transferred			1,557
Cash			-21
Unbilled receivables			347
Accounts receivable			8
Other assets			35
Deferred tax liabilities			0
Other current liabilities			-770
Identifiable intangible assets			1,210
Goodwill			748
Purchase price			$1,557

Business_Acquisitions_Identifi1

Business Acquisitions - Identifiable Intangible Assets Acquired for 2012 Business Acquisitions (Details) (USD $)	0 Months Ended
In Thousands, unless otherwise specified	Aug. 03, 2012	Jul. 05, 2012	Dec. 31, 2012
Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	$13,640
Weighted- Average Life (Years)	4 years
Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		3,720
Weighted- Average Life (Years)		5 years
PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			1,210
Weighted- Average Life (Years)			8 years
Trademarks and trade names | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	3,610
Weighted- Average Life (Years)	3 years
Trademarks and trade names | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		650
Weighted- Average Life (Years)		7 years
Trademarks and trade names | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			240
Weighted- Average Life (Years)			5 years
Proprietary software | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	2,610
Weighted- Average Life (Years)	5 years
Proprietary software | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		1,950
Weighted- Average Life (Years)		5 years
Proprietary software | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			190
Weighted- Average Life (Years)			5 years
Website | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	40
Weighted- Average Life (Years)	4 years
Website | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		0
Website | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			10
Weighted- Average Life (Years)			2 years
Training materials | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	0
Training materials | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		0
Training materials | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			30
Weighted- Average Life (Years)			3 years
Non-compete agreements | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	60
Weighted- Average Life (Years)	5 years
Non-compete agreements | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		80
Weighted- Average Life (Years)		3 years
Non-compete agreements | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			0
Leasehold interests | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	170
Weighted- Average Life (Years)	6 years
Leasehold interests | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		0
Leasehold interests | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			0
Caregiver relationships | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	0
Caregiver relationships | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		270
Weighted- Average Life (Years)		3 years
Caregiver relationships | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			50
Weighted- Average Life (Years)			3 years
Customer relationships | Breedlove
Business Acquisition [Line Items]
Identifiable intangible assets acquired	7,150
Weighted- Average Life (Years)	4 years
Customer relationships | Betreut
Business Acquisition [Line Items]
Identifiable intangible assets acquired		770
Weighted- Average Life (Years)		4 years
Customer relationships | PIAP
Business Acquisition [Line Items]
Identifiable intangible assets acquired			$690
Weighted- Average Life (Years)			10 years

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Change in Goodwill (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Jul. 17, 2014
Goodwill
Balance as of December 28, 2013	$62,686
Impairment of goodwill	-33,788
Effect of currency translation	-2,540
27-Dec-14	68,685
Citrus Lane Inc
Goodwill
Balance as of December 28, 2013		41,839
Consmr acquisition	41,839
Impairment of goodwill	-33,800
27-Dec-14		41,839
Consumr
Goodwill
Consmr acquisition	$488

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Accumulated Goodwill Impairment Losses (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014
Goodwill Impairment Loss
Accumulated goodwill impairment losses, beginning balance	$0
Goodwill impairment charge	33,788
Accumulated goodwill impairment losses, ending balance	$33,788

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite lived intangibles	$242	$242
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	-12,156	-8,266
Net Carrying Value	8,723
Total Gross Carrying Value	21,121	19,684
Total Accumulated Amortization	-12,156	-8,266
Total Net Carrying Value	8,965	11,418
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	5,281	4,561
Accumulated Amortization	-3,377	-2,096
Net Carrying Value	1,904	2,465
Total Accumulated Amortization	-3,377	-2,096
Weighted-Average Remaining Life	5 years 2 months 12 days	2 years 6 months
Proprietary software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,942	5,184
Accumulated Amortization	-3,351	-2,952
Net Carrying Value	1,591	2,232
Total Accumulated Amortization	-3,351	-2,952
Weighted-Average Remaining Life	2 years 6 months	3 years 6 months
Website
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,150	50
Accumulated Amortization	-34	-19
Net Carrying Value	1,116	31
Total Accumulated Amortization	-34	-19
Weighted-Average Remaining Life	6 years 6 months	2 years 3 months 18 days
Training materials
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	30	30
Accumulated Amortization	-20	-10
Net Carrying Value	10	20
Total Accumulated Amortization	-20	-10
Weighted-Average Remaining Life	1 year	2 years 0 months 6 days
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	137	148
Accumulated Amortization	-94	-61
Net Carrying Value	43	87
Total Accumulated Amortization	-94	-61
Weighted-Average Remaining Life	2 years 0 months 6 days	2 years 7 months 6 days
Leasehold interests
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	170	170
Accumulated Amortization	-61	-36
Net Carrying Value	109	134
Total Accumulated Amortization	-61	-36
Weighted-Average Remaining Life	4 years 5 months 6 days	5 years 4 months 24 days
Caregiver relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	312	346
Accumulated Amortization	-252	-164
Net Carrying Value	60	182
Total Accumulated Amortization	-252	-164
Weighted-Average Remaining Life	8 months 24 days	1 year 7 months 6 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	8,857	8,953
Accumulated Amortization	-4,967	-2,928
Net Carrying Value	3,890	6,025
Total Accumulated Amortization	($4,967)	($2,928)
Weighted-Average Remaining Life	2 years 10 months 9 days	3 years 6 months

Goodwill_and_Intangible_Assets5

Goodwill and Intangible Assets - Intangible Assets - Future Amortization (Details) (USD $)	Dec. 27, 2014
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]
2015	$3,886
2016	2,222
2017	806
2018	461
2019	400
Thereafter	948
Net Carrying Value	$8,723

Goodwill_and_Intangible_Assets6

Goodwill and Intangible Assets - Additional Information (Details) (USD $)	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment charge	$33,788,000
Amortization of intangible assets	4,500,000	6,000,000
Depreciation and Amortization
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	3,500,000	3,700,000
Cost of revenue
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	1,000,000	2,300,000
Citrus Lane Inc
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charge	2,400,000
Goodwill impairment charge	$33,800,000

Accrued_Expenses_and_Other_Cur2

Accrued Expenses and Other Current Liabilities - Additional Information (Details) (USD $)	Dec. 27, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Payroll and compensation	$1,722	$3,134
Tax-related expense	1,609	372
Marketing expenses	3,385	1,028
Other accrued expenses	6,016	2,489
Accrued expenses and other current liabilities	$12,732	$7,023

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Details) (USD $)	0 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jul. 31, 2014	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012	Jul. 31, 2014
	extension				sublease_agreement
	sublease_agreement
Capital Leased Assets [Line Items]
Facilities rent expense under operating leases		$3.70	$2.50
Number of sublease agreements	2				2
Number of optional lease extensions	1
Term of optional lease extension	10 years
Rent expense		2.7	1.6	1.5
Capital expenditures commitment		0.4
Inventories
Capital Leased Assets [Line Items]
Inventory purchase commitments		1.1
Care International Exchange, Inc.
Capital Leased Assets [Line Items]
Ownership percentage				50.00%
Commitment for additional funding				0.4
Prime Lease
Capital Leased Assets [Line Items]
Capital lease obligations	34.5				34.5
Tenant reimbursement allowance	2.3
Payments for deposits		2.8
Prime Lease, Sixth Floor
Capital Leased Assets [Line Items]
Area of real estate property	36,174				36,174
Prime Lease, Fourth Floor
Capital Leased Assets [Line Items]
Area of real estate property	36,395				36,395
Capital lease obligations	4.3				4.3
Prime Lease, Fifth Floor
Capital Leased Assets [Line Items]
Area of real estate property	36,174				36,174
Capital lease obligations	4.1				4.1

Commitments_and_Contingencies_2

Commitments and Contingencies - Operating Lease Obligations (Details) (USD $)	Dec. 27, 2014
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
Total	$47.30
Less Than 1 Year	4.2
1-3 Years	8.7
4-5 Years	9.6
Thereafter	$24.80

Stockholders_Equity_Deficit_Ad

Stockholders' Equity (Deficit) - Additional Information (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jan. 29, 2014	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Class of Stock [Line Items]
Share Price		$8.33
Net proceeds from issuance of common stock upon initial public offering		($94,810)
Offering Expenses	2,400	0	1,074	0
Common Stock
Class of Stock [Line Items]
Shares of common stock	6,152,500
Shares of common stock sold, underwriters Issued	802,500
Share Price	$17
Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock warrants	21,490,656
Common Stock
Class of Stock [Line Items]
Series A-1 Convertible preferred stock	40,697
Exercise price	$1.72
Lighthouse Capital Partners | Convertible Preferred stock series A-1
Class of Stock [Line Items]
Series A-1 Convertible preferred stock		40,697
Exercise price		$1.72
Stock issued, warrant exercises		38,142
Loan and Security Agreement, 2010 | Common Stock
Class of Stock [Line Items]
Series A-1 Convertible preferred stock		40,000
Exercise price		$1.65
Stock issued, warrant exercises		37,591
Additional Paid-In Capital
Class of Stock [Line Items]
Net proceeds from issuance of common stock upon initial public offering	$94,800	($94,804)

Stockholders_Equity_Deficit_Sh

Stockholders' Equity (Deficit) - Shares Reserved for Issuance (Details)	Dec. 27, 2014
In Thousands, unless otherwise specified
Class of Stock [Line Items]
Total shares of common stock reserved for future issuance	7,629
Stock options
Class of Stock [Line Items]
Total shares of common stock reserved for future issuance	4,270
Employee Stock Options, Available for Issuance
Class of Stock [Line Items]
Total shares of common stock reserved for future issuance	3,062
Contingent acquisition consideration | Convertible Common Stock, Series E
Class of Stock [Line Items]
Total shares of common stock reserved for future issuance	297

Stock_Option_Plans_and_StockBa2

Stock Option Plans and Stock-Based Compensation - Summary of Stock Option Activity (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Number of Shares
Options outstanding, beginning balance	3,439
Granted	1,554
Canceled and forfeited	-503
Exercised	-220
Options outstanding, ending balance	4,270	3,439
Options vested and exercisable at end of period	2,381
Options vested and expected to vest at end of period	4,194
Weighted-Average Exercise Price (usd per share)
Options, outstanding, weighted average exercise price, beginning of period	$4.28
Granted	$11.15
Canceled and forfeited	$8.16
Exercised	$4.51
Options, outstanding, weighted average exercise price, end of period	$6.47	$4.28
Options vested and exercisable, weighted average exercise price (usd per share)	$4.04
Options vested and expected to vest, weighted average exercise price (usd per share)	$6.39
Stock Options, Additional Disclosures
Options outstanding, weighted average remaining contractual term, beginning of period	7 years 2 months	7 years 11 months 23 days
Options outstanding, weighted average remaining contractual term, end of period	7 years 2 months	7 years 11 months 23 days
Options, outstanding, aggregate intrinsic value, beginning of period	$27,148
Options, outstanding, aggregate intrinsic value, end of period	14,373	27,148
Options vested and exercisable at end of period, Weighted Average Remaining Contractual Term	6 years 90 days
Options vested and expected to vest at end of period, Weighted Average Remaining Contractual Term	7 years 55 days
Options vested and exercisable at end of period, Aggregate Intrinsic Value	11,194
Options vested and expected to vest at end of period, Aggregate Intrinsic Value	$14,283

Stock_Option_Plans_and_StockBa3

Stock Option Plans and Stock-Based Compensation - Stock Options, Valuation Assumptions (Details)	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free interest rate, minimum	1.81%	1.23%
Expected term (years)	6 years 90 days	6 years 90 days
Risk-free interest rate, maximum	1.95%	2.00%
Volatility, minimum	47.10%
Volatility, maximum	56.30%
Volatility		44.60%
Expected dividend yield	0.00%	0.00%

Stock_Option_Plans_and_StockBa4

Stock Option Plans and Stock-Based Compensation - Summary of Stock-based Compensation in Accompanying Consolidated Statements (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation	$5,805	$1,862	$1,952
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation	183	161	159
Selling and marketing
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation	763	348	369
Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation	624	356	213
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation	$4,235	$997	$1,211

Stock_Option_Plans_and_StockBa5

Stock Option Plans and Stock-Based Compensation - Additional Information (Details) (USD $)	12 Months Ended	0 Months Ended			12 Months Ended
	Dec. 27, 2014	Nov. 15, 2006	Jan. 23, 2014	Jan. 29, 2014	Dec. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	1,554,000
Share Price	$8.33
Intrinsic value of options exercised	$1,600,000
Weighted-average grant-date fair value weighted average grant date fair value	$7.83
The aggregate fair value of the options vested	3,700,000
Citrus Lane Inc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, acceleration of vesting	1,400,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	9,100,000
Unrecognized compensation cost, period for recognition	2 years 6 months 0 days
2006 plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued under Plan		4,567,500
Award vesting period		4 years
Payment Award, Expiration Period		10 years
2006 plan | Employee Stock Option | Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage		25.00%
Award requisite service period		1 year
2006 plan | Employee Stock Option | Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage		75.00%
Award requisite service period		3 years
2014 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued under Plan			4,112,048
Shares available for grant	3,061,898
2014 Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Payment Award, Expiration Period			10 years
Common stock outstanding, converted basis, percentage			4.00%
2014 Plan | Employee Stock Option | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued under Plan	5,002,935
2014 Plan | Employee Stock Option | Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Award vesting rights, percentage			25.00%
2014 Plan | Employee Stock Option | Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Award vesting rights, percentage			75.00%
Chief Executive Officer | 2006 plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted				150,000
Share-based Compensation	$0				$200,000

Net_Loss_Per_Share_Calculation

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Net loss	($40,420)	($14,453)	($9,875)	($15,544)	($3,631)	($11,732)	($6,114)	($6,819)	($80,292)	($28,296)	($20,420)
Accretion of preferred stock									-4	-57	-48
Net loss attributable to common stockholders	($40,420)	($14,453)	($9,875)	($15,548)	($3,646)	($11,746)	($6,128)	($6,833)	($80,296)	($28,353)	($20,468)
Net loss per share attributable to common stockholders:
Basic and diluted (in dollars per share)	($1.28)	($0.46)	($0.32)	($0.71)	($1.16)	($3.86)	($2.08)	($2.35)	($2.77)	($9.45)	($7.97)
Weighted-average shares used to compute net loss per share attributable to common stockholders:
Basic and diluted (in shares)									28,941	3,000	2,568

Net_Loss_Per_Share_Antidilutiv

Net Loss Per Share - Antidilutive Securities (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Redeemable convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (shares)	0	21,299	21,299
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (shares)	4,270	3,439	2,706
Preferred stock warrants | Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (shares)	0	41	41
Preferred stock warrants | Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (shares)	0	40	40

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Operating Loss Carryforwards [Line Items]
Valuation allowance	$46.60	$27.20
Increase in overall valuation allowance	19.4
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	98
Excess tax benefits from the exercises of stock compensation	0.6
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	76.8
Excess tax benefits from the exercises of stock compensation	0.5
GERMANY
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	8.2
UNITED KINGDOM
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	3.5
AUSTRALIA
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0.3
CANADA
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1.1
Citrus Lane Inc
Operating Loss Carryforwards [Line Items]
Increase in income tax benefit	$1.90

Income_Taxes_Schedule_of_Incom

Income Taxes - Schedule of Income before Income Tax, Domestic and Foreign (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
United States	($75,463)	($22,182)	($16,656)
Foreign	-5,581	-5,760	-4,081
Loss before income taxes	($81,044)	($27,942)	($20,737)

Income_Taxes_Components_of_Inc

Income Taxes - Components of Income Tax Expense (Benefit) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Current:
Federal	$0	$0	$0
State	108	70	28
Foreign	33	0	0
Total current provision for income taxes	141	70	28
Deferred:
Federal	-757	626	374
State	-136	49	63
Foreign	0	-391	-782
Total deferred tax (benefit) provision	-893	284	-345
Total (benefit from) provision for income taxes	($752)	$354	($317)

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of the Statutory Federal Rate and Effective Tax Rate (Details)	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
U.S. federal taxes at statutory rate	34.00%	34.00%	34.00%
State income taxes, net of federal benefit	0.00%	2.00%	3.00%
Permanent differences	-2.00%	-3.00%	-4.00%
Impairment of goodwill and intangible assets	-14.00%	0.00%	0.00%
Foreign rate differential	0.00%	-1.00%	-1.00%
Change in valuation allowance - U.S.	-15.00%	-28.00%	-31.00%
Change in valuation allowance - foreign	-2.00%	-5.00%	-2.00%
Rate change	0.00%	0.00%	3.00%
Total	1.00%	-1.00%	2.00%

Income_Taxes_Significant_Compo

Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) (USD $)	Dec. 27, 2014	Dec. 28, 2013
In Thousands, unless otherwise specified
Deferred tax assets
Net operating loss carryforwards	$40,790	$25,307
Fixed assets	0	76
Accrued expenses	1,696	28
Stock-based compensation	1,618	140
U.S. definite lived intangibles	3,538	1,609
Other temporary differences	33	475
Total deferred tax assets	47,675	27,635
Valuation allowance	-46,619	-27,215
Net deferred tax assets	1,056	420
Deferred tax liabilities
Foreign intangibles	-224	-386
U.S. goodwill	-2,072	-1,112
Fixed assets	-832	0
Other	0	-34
Total deferred tax liabilities	-3,128	-1,532
Net deferred tax liabilities	($2,072)	($1,112)

Segment_and_Geographical_Infor2

Segment and Geographical Information - Revenue by Product Lines (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Revenue from External Customer [Line Items]
Total revenue	$33,552	$32,054	$25,836	$25,271	$22,511	$21,681	$19,133	$18,162	$116,713	$81,487	$48,493
Consumer matching
Revenue from External Customer [Line Items]
Total revenue									82,031	61,645	41,409
Consumer payments
Revenue from External Customer [Line Items]
Total revenue									14,493	10,770	3,133
Merchandise
Revenue from External Customer [Line Items]
Total revenue									6,001	0	0
Other
Revenue from External Customer [Line Items]
Total revenue									$14,188	$9,072	$3,951

Segment_and_Geographical_Infor3

Segment and Geographical Information - Revenue by Geographic Location (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total revenue	$33,552	$32,054	$25,836	$25,271	$22,511	$21,681	$19,133	$18,162	$116,713	$81,487	$48,493
Geographic Concentration | Revenue
Segment Reporting Information [Line Items]
Percentage of total revenue									100.00%	100.00%	100.00%
United States
Segment Reporting Information [Line Items]
Total revenue									108,048	74,800	45,514
United States | Geographic Concentration | Revenue
Segment Reporting Information [Line Items]
Percentage of total revenue									93.00%	92.00%	94.00%
International
Segment Reporting Information [Line Items]
Total revenue									$8,665	$6,687	$2,979
International | Geographic Concentration | Revenue
Segment Reporting Information [Line Items]
Percentage of total revenue									7.00%	8.00%	6.00%

Segment_and_Geographical_Infor4

Segment and Geographical Information - Additional Information (Details)	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
	Segment	Segment	Segment
Segment Reporting [Abstract]
Number of operating segments	1	1	1
Number of reportable segments	1	1	1

Related_Party_Transactions_Det

Related Party Transactions (Details) (USAA Alliance, USD $)	12 Months Ended
	Dec. 27, 2014
USAA Alliance
Related Party Transaction [Line Items]
Commissions paid (less than)	$100,000

Other_Expense_Net_Details

Other Expense, Net (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Other Income and Expenses [Abstract]
Interest income	$86	$47	$48
Interest expense	-43	-17	-3
Other expense, net	-3,899	-321	-92
Total other expense, net	($3,856)	($291)	($47)

Quarterly_Financial_Informatio2

Quarterly Financial Information (Unaudited) - Additional Information (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Total revenue	$33,552	$32,054	$25,836	$25,271	$22,511	$21,681	$19,133	$18,162	$116,713	$81,487	$48,493
Cost of revenue	9,729	9,132	5,713	5,771	4,852	5,158	4,607	4,227	30,345	18,844	10,210
Operating loss	-40,255	-14,987	-9,633	-12,313	-3,891	-11,469	-5,906	-6,385	-77,188	-27,651	-20,690
Net loss	-40,420	-14,453	-9,875	-15,544	-3,631	-11,732	-6,114	-6,819	-80,292	-28,296	-20,420
Net loss attributable to common stockholders	($40,420)	($14,453)	($9,875)	($15,548)	($3,646)	($11,746)	($6,128)	($6,833)	($80,296)	($28,353)	($20,468)
Basic and diluted (in dollars per share)	($1.28)	($0.46)	($0.32)	($0.71)	($1.16)	($3.86)	($2.08)	($2.35)	($2.77)	($9.45)	($7.97)