Q2 (QTWO) 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Entity [Abstract]
Entity Registrant Name	Q2 HOLDINGS, INC.
Entity Central Index Key	1410384
Trading Symbol	qtwo
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock Shares Outstanding		37,188,805
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$94,170	$67,979
Restricted cash	829	829
Investments	25,525	20,956
Accounts receivable, net	7,225	5,007
Prepaid expenses and other current assets	3,282	2,695
Deferred solution and other costs, current portion	4,070	5,060
Deferred implementation costs, current portion	2,054	1,996
Total current assets	137,155	104,522
Property and equipment, net	19,001	18,521
Deferred solution and other costs, net of current portion	8,192	7,159
Deferred implementation costs, net of current portion	5,554	5,378
Other long-term assets	1,141	1,226
Total assets	171,043	136,806
Current liabilities:
Accounts payable	3,444	1,986
Accrued liabilities	10,338	9,268
Accrued compensation	2,781	3,936
Deferred revenues, current portion	18,576	17,289
Capital lease obligations, current portion	338	408
Total current liabilities	35,477	32,887
Deferred revenues, net of current portion	21,025	19,436
Capital lease obligations, net of current portion	105	167
Deferred rent, net of current portion	4,504	4,694
Other long-term liabilities	709	682
Total liabilities	61,820	57,866
Commitments and contingencies (Note 6)
Stockholders' equity:
Common stock: $0.0001 par value; 150,000 shares authorized; 37,189 shares issued and 37,188 shares outstanding as of March 31, 2015, and 34,697 shares issued and 34,696 shares outstanding as of December 31, 2014	4	3
Preferred stock: $0.0001 par value; 5,000 shares authorized; no shares issued or outstanding as of March 31, 2015, and December 31, 2014	0	0
Treasury stock at cost; 1 shares at each of March 31, 2015 and December 31, 2014	-27	-20
Additional paid-in capital	178,262	143,337
Accumulated other comprehensive loss	-5	-14
Accumulated deficit	-69,011	-64,366
Total stockholders' equity	109,223	78,940
Total liabilities and stockholders' equity	$171,043	$136,806

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common Stock, Par Value (in dollars per share)	$0.00	$0.00
Common Stock, Shares Authorized	150,000,000	150,000,000
Common Stock, Shares, Issued	37,189,000	34,697,000
Common Stock, Shares Outstanding	37,188,000	34,696,000
Preferred Stock, Par Value (in 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
Treasury Stock, Shares	1,000	1,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Comprehensive Loss (unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Income Statement [Abstract]
Revenues	$24,157		$16,834
Cost of revenues	13,272	[1]	10,212	[1]
Gross profit	10,885		6,622
Operating expenses:
Sales and marketing	6,194	[1]	5,509	[1]
Research and development	4,151	[1]	2,736	[1]
General and administrative	5,125	[1]	3,718	[1]
Total operating expenses	15,470		11,963
Loss from operations	-4,585		-5,341
Other income (expense):
Interest and other income	44		0
Interest and other expense	-72		-207
Total other expense, net	-28		-207
Loss before income taxes	-4,613		-5,548
Provision for income taxes	-32		-18
Net loss	-4,645		-5,566
Other comprehensive loss:
Unrealized gain on available-for-sale investments	9		0
Comprehensive loss	($4,636)		($5,566)
Net loss per common share:
Net loss per common share, basic and diluted (dollars per share)	($0.13)		($0.39)
Weighted average common shares outstanding:
Basic and diluted (shares)	35,633		14,107
[1]	Includes stock-based compensation as follows for the three months ended March 31, 2015 and 2014, respectively, Cost of Revenues of $178 and $126, respectively; Sales and Marketing of $292 and $167, respectively; Research and development of $162 and $107, respectively; General and administrative of $690 and $518, respectively; Total stock-based compensation of $1,322 and $918, respectively.

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (unaudited) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Stock-based compensation expenses	$1,322	$918
Cost of revenues [Member]
Stock-based compensation expenses	178	126
Sales and marketing [Member]
Stock-based compensation expenses	292	167
Research and development [Member]
Stock-based compensation expenses	162	107
General and administrative [Member]
Stock-based compensation expenses	$690	$518

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net loss	($4,645)	($5,566)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of deferred implementation, solution and other costs	1,127	967
Depreciation and amortization	1,203	999
Amortization of debt issuance costs	24	24
Amortization of premiums on investments	89	0
Stock-based compensation expenses	1,322	918
Allowance for sales credits	15	15
Changes in operating assets and liabilities:
Accounts receivable, net	-2,232	3,314
Prepaid expenses and other current assets	-585	-695
Deferred solution and other costs	-488	-1,467
Deferred implementation costs	-918	-837
Other long-term assets	41	363
Accounts payable	917	1,038
Accrued liabilities	-1,200	-4,725
Deferred revenues	2,876	961
Deferred rent and other long-term liabilities	-190	193
Net cash used in operating activities	-2,644	-4,498
Cash flows from investing activities:
Purchases of investments	-6,480	0
Redemption of investments	1,830	0
Purchases of property and equipment	-436	-1,830
Net cash used in investing activities	-5,086	-1,830
Cash flows from financing activities:
Proceeds from borrowings on line of credit	0	12,500
Payments on line of credit	0	-12,500
Payments on capital lease obligations	-136	-223
Proceeds from the issuance of common stock, net of issuance costs	32,811	73,615
Proceeds from exercise of stock options to purchase common stock	1,253	934
Shares acquired to settle the exercise of stock options	-7	0
Net cash provided by financing activities	33,921	74,326
Net increase in cash and cash equivalents	26,191	67,998
Cash and cash equivalents, beginning of period	67,979	18,675
Cash and cash equivalents, end of period	94,170	86,673
Supplemental disclosures of cash flow information:
Cash paid for interest	$23	$102

Organization_and_Description_o

Organization and Description of Business	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of Business
	Q2 Holdings, Inc., or the Company, is a leading provider of secure, cloud-based virtual banking solutions. The Company enables regional and community financial institutions, or RCFIs, to deliver a robust suite of integrated virtual banking services and more effectively engage with their retail and commercial account holders who expect to bank anytime, anywhere and on any device. The Company delivers its solutions to the substantial majority of its customers using a software-as-a-service, or SaaS, model under which its RCFI customers pay subscription fees for the use of the Company's solutions.
	The Company, formerly known as CBG Holdings, Inc., was incorporated in Delaware in March 2005 and is a holding company that owns 100% of the outstanding capital stock of Q2 Software, Inc. On March 1, 2013, the Company reorganized its business operations in conjunction with the private placement of its Series C redeemable convertible preferred stock. Prior to the reorganization, the Company owned 100% of the outstanding capital stock of cbanc Network Inc., or cbanc. Pursuant to the reorganization, the Company distributed all shares of cbanc to its stockholders in a spin-off, and the Company was renamed Q2 Holdings, Inc.
	The Company's headquarters are located in Austin, Texas.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies
	Basis of Presentation and Principles of Consolidation
	As used in this report, the terms "we," "us," or "our" refer to Q2 Holdings, Inc. and its wholly-owned subsidiary. These interim unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, and Securities and Exchange Commission, or SEC, requirements for interim financial statements. The interim unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary. All intercompany accounts and transactions have been eliminated in consolidation.
	In the Company's opinion, the accompanying interim unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting of normal, recurring adjustments, necessary for a fair presentation. Certain information and disclosures normally included in the notes to the annual consolidated financial statements prepared in accordance with GAAP have been omitted from these interim unaudited condensed consolidated financial statements pursuant to the rules and regulations of the SEC. Accordingly, these interim unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the accompanying notes for the fiscal year ended December 31, 2014, which are included in the Company's Annual Report on Form 10-K, filed with the SEC on February 12, 2015. The results of operations for the three months ended March 31, 2015 are not necessarily indicative of the results to be expected for the year ending December 31, 2015 or for any other period.
	Use of Estimates
	The preparation of the accompanying interim unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the interim unaudited condensed consolidated financial statements, and the reported amounts of revenues and expenses. Significant items subject to such estimates include stock-based compensation, the useful lives of property and equipment and income taxes. In accordance with GAAP, management bases its estimates on historical experience and on various other assumptions that management believes are reasonable under the circumstances. Management regularly evaluates its estimates and assumptions using historical experience and other factors; however, actual results could differ significantly from those estimates.
	Cash and Cash Equivalents
	The Company considers all highly liquid investments acquired with an original maturity of ninety days or less at the date of purchase to be cash equivalents. Cash equivalents are stated at cost or fair value based on the underlying security.
	Restricted Cash
	Restricted cash consists of deposits held in checking and money market accounts for leased office space.
	Investments
	Investments consist primarily of U.S. government agency bonds, corporate bonds, commercial paper, certificates of deposits and money market funds. All investments are considered available for sale and are carried at fair value.
	Concentration of Credit Risk
	Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash and cash equivalents, restricted cash, investments and accounts receivable. The Company's cash and cash equivalents and restricted cash are placed with high credit quality financial institutions and issuers, and at times may exceed federally-insured limits. The Company has not experienced any loss relating to cash and cash equivalents or restricted cash in these accounts. The Company provides credit, in the normal course of business, to a number of its customers. The Company performs periodic credit evaluations of its customers' financial condition and generally does not require collateral. No individual customer accounted for 10% or more of revenues for each of the three months ended March 31, 2015 and 2014. As of March 31, 2015, a single customer accounted for 17% of accounts receivable, net, and no individual customer accounted for 10% or more of accounts receivable, net, as of December 31, 2014.
	Accounts Receivable
	Accounts receivable are stated at net realizable value, including both billed and unbilled receivables to customers. Unbilled receivable balances arise primarily when the Company provides services in advance of billing for these services and also when the Company earns revenues based on the number of registered users and the number of bill-pay and certain other transactions that registered users perform on the Company's virtual banking solutions in excess of the levels included in the Company's minimum subscription fee. Generally, billing for revenues related to the number of registered users and the number of transactions processed by our registered users occurs one month in arrears. Included in the accounts receivable balances as of March 31, 2015 and December 31, 2014 were unbilled receivables of $2.9 million and $2.3 million, respectively.
	The Company assesses the collectability of outstanding accounts receivable on an ongoing basis and maintains an allowance for doubtful accounts for accounts receivable deemed uncollectable. This allowance is recorded as a reduction against accounts receivable. As of March 31, 2015 and December 31, 2014, the Company did not provide for an allowance for doubtful accounts, as all amounts outstanding were deemed collectable. Historically, the Company's collection experience has not varied significantly, and bad debt expenses have been insignificant.
	The Company maintains a reserve for estimated sales credits issued to customers for billing disputes or other service-related reasons. This allowance is recorded as a reduction against current period revenues and accounts receivable. In estimating this allowance, the Company analyzes prior periods to determine the amounts of sales credits issued to customers compared to the revenues in the period that related to the original customer invoice. This estimate is analyzed quarterly and adjusted as necessary. The allowance for sales credits was $0.2 million at each of March 31, 2015 and December 31, 2014.
	Deferred Implementation Costs
	The Company capitalizes certain personnel and other costs, such as employee salaries, benefits and the associated payroll taxes that are direct and incremental to the implementation of its solutions. The Company analyzes implementation costs that may be capitalized to assess their recoverability, and only capitalizes costs that it anticipates to be recoverable. The Company assesses the recoverability of its deferred implementation costs by comparing the greater of the amount of the non-cancellable portion of a customer's contract and the non-refundable customer prepayments received as it relates to the specific implementation costs incurred. The Company begins amortizing the deferred implementation costs for an implementation once the revenue recognition criteria have been met and the Company amortizes those deferred implementation costs ratably over the remaining term of the customer agreement. The portion of deferred implementation costs expected to be amortized during the succeeding twelve-month period is recorded in current assets as deferred implementation costs, current portion, and the remainder is recorded in long-term assets as deferred implementation costs, net of current portion.
	Deferred Solution and Other Costs
	The Company capitalizes sales commissions and other third-party costs, such as third party licenses and maintenance related to its customer agreements. The Company capitalizes sales commissions because the commission charges are so closely related to the revenues from the non-cancellable customer agreements that they should be recorded as an asset and charged to expense over the same period that the related revenue is recognized. The Company begins amortizing deferred solution and other costs for a particular customer agreement once the revenue recognition criteria are met and amortizes those deferred costs over the remaining term of the customer agreement. The Company analyzes solution and other costs that may be capitalized to assess their recoverability and only capitalizes costs that it anticipates to be recoverable. The portion of capitalized costs expected to be amortized during the succeeding twelve-month period is recorded in current assets as deferred solution and other costs, current portion, and the remainder is recorded in long-term assets as deferred solution and other costs, net of current portion.
	Property and Equipment
	Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is calculated on a straight-line basis over the estimated useful lives of the related assets. Leasehold improvements are amortized over the shorter of the lease term or the estimated useful lives of the related assets. Maintenance and repairs that do not extend the life of or improve an asset are expensed in the period incurred.
	The estimated useful lives of property and equipment are as follows:
	Computer hardware and equipment		3 - 5 years
	Purchased software and licenses		3 - 5 years
	Furniture and fixtures		7 years
	Leasehold improvements		Lesser of estimated useful life or lease term
	Deferred Revenues
	Deferred revenues primarily consist of amounts that have been billed to or received from customers in advance of revenue recognition and prepayments received from customers in advance for implementation, maintenance and other services, as well as initial subscription fees. The Company recognizes deferred revenues as revenues when the services are performed and the corresponding revenue recognition criteria are met. Customer prepayments are generally applied against invoices issued to customers when services are performed and billed. Deferred revenues that are expected to be recognized as revenues during the succeeding twelve month period are recorded in current liabilities as deferred revenues, current portion and the remaining portion is recorded in long-term liabilities as deferred revenues, net of current portion.
	Revenues
	All revenue-generating activities are directly related to the sale, implementation and support of the Company's solutions within a single operating segment. The Company derives the substantial majority of its revenues from subscription fees for the use of its solutions hosted in the Company's data centers as well as revenues for implementation and customer support services related to the Company's solutions. A small portion of the Company's customers host the Company's solutions in their own data centers under term license and maintenance agreements, and the Company recognizes the corresponding revenues ratably over the term of those customer agreements.
	Revenues are recognized net of sales credits and allowances. The Company begins to recognize revenues for a customer when all of the following criteria are satisfied:
	•	there is persuasive evidence of an arrangement;
	•	the service has been or is being provided to the customer;
	•	the collection of the fees is reasonably assured; and
	•	the amount of fees to be paid by the customer is fixed or determinable.
	Determining whether and when these criteria have been met can require significant judgment and estimates. In general, revenue recognition commences when the Company's solutions are implemented and made available to the customers.
	The Company's software solutions are available for use in hosted application arrangements under subscription fee agreements. Subscription fees from these applications, including related customer support, are recognized ratably over the customer agreement term beginning on the date the solution is made available to the customer. Amounts that have been invoiced are recorded in accounts receivable and deferred revenues or revenues, depending on whether the Company's revenue recognition criteria have been met.
	The Company considers subscription fees to be fixed or determinable unless the fees are subject to refund or adjustment or are not payable within the Company's standard payment terms. In determining whether collection of subscription fees is reasonably assured, the Company considers financial and other information about customers, such as a customer's current credit-worthiness and payment history over time. Historically, bad debt expenses have not been significant.
	The Company enters into arrangements with multiple-deliverables that generally include multiple subscriptions and implementation services. Additional agreements with existing customers that are not in close proximity to the original arrangements are treated as separate contracts for accounting purposes.
	For multiple-deliverable arrangements, arrangement consideration is allocated to deliverables based on their relative selling price. In order to treat deliverables in a multiple-deliverable arrangement as separate units of accounting, the deliverables must have standalone value upon delivery. The Company's subscription services have standalone value as such services are often sold separately. In determining whether implementation services have standalone value apart from the subscription services, the Company considers various factors including the availability of the services from other vendors. To date, the Company has concluded that the implementation services included in multiple-deliverable arrangements do not have standalone value. As a result, when implementation services are sold in a multiple-deliverable arrangement, the Company defers any arrangement fees for implementation services and recognizes such amounts ratably over the period of performance for the initial agreement term.
	When multiple-deliverables included in an arrangement are separated into different units of accounting, the arrangement consideration is allocated to the identified separate units based on a relative selling price hierarchy. The selling price for a deliverable is based on its vendor-specific objective evidence of selling price, or VSOE, if available, third-party evidence of selling price, or TPE, if VSOE is not available or best estimate of selling price, or BESP, if neither VSOE nor TPE is available. The Company has not established VSOE for its subscription services due to lack of pricing consistency, the introduction of new services and other factors. The Company has determined that TPE is not a practical alternative due to differences in its service offerings compared to other parties and the availability of relevant third-party pricing information. Accordingly, the Company uses BESP to determine the relative selling price. The amount of revenue allocated to delivered items is limited by contingent revenues.
	The Company determines BESP by considering its overall pricing objectives and market conditions. Significant pricing practices taken into consideration include the Company's discounting practices, the size and volume of its transactions, customer characteristics, price lists, go-to-market strategy, historical standalone sales and agreement prices. As the Company's go-to-market strategies evolve, it may modify its pricing practices in the future, which could result in changes in relative selling prices, and include both VSOE and BESP.
	Subscription Fee Revenues
	The Company's solutions are available as hosted solutions under subscription fee agreements without licensing perpetual rights to the software. Subscription fees from a hosted solution are recognized monthly over the customer agreement term beginning on the date the Company's solution is made available to the customer. Additional fees for monthly usage above the levels included in the standard subscription fee, which include fees for transactions processed during the period, are recognized as revenue in the month when the usage amounts are determined and reported. Any revenues related to upfront implementation services are recognized ratably over the same customer agreement term. Amounts that have been invoiced are recorded in accounts receivable and deferred revenues or revenues, depending on whether the revenue recognition criteria have been met.
	Professional Services Revenues
	When professional services are not combined with subscription services or term licenses as a single unit of accounting, these professional services revenues are recognized as the services are performed.
	Certain out-of-pocket expenses billed to customers are recorded as revenues rather than an offset to the related expense. Revenues recorded from out-of-pocket expense reimbursements totaled approximately $0.2 million and $0.1 million during the three months ended March 31, 2015 and 2014, respectively. The out-of-pocket expenses are reported in cost of revenues.
	Term Licenses and Maintenance Revenues
	A small portion of the Company's customers host and manage the Company's solutions on-premises or in third-party data centers under term license and maintenance agreements. Term licenses sold with maintenance, which entitles the customer to technical support and upgrades and updates to the software made available on a when-and-if-available basis, are accounted for under Accounting Standards Codification 985-605, "Software Revenue Recognition." The Company does not have VSOE of fair value for the maintenance and professional services so the entire arrangement consideration is recognized monthly over the term of the software license when all of the other revenue recognition criteria have been met. Revenues from term licenses and maintenance agreements were not significant in the periods presented.
	Cost of Revenues
	Cost of revenues is comprised primarily of salaries and other personnel-related costs, including employee benefits, bonuses and stock-based compensation, for employees providing services to the Company's customers. Costs associated with these services include the costs of the Company's implementation, customer support, data center and customer training personnel as well as reclassification of certain research and development expenses related to research and development personnel who perform services related to implementation and customer support. Cost of revenues also includes the direct costs of bill-pay and other third-party intellectual property included in the Company's solutions, the amortization of deferred solution and services costs, co-location facility costs and depreciation of the Company's data center assets, an allocation of general overhead costs and referral fees. Direct costs of third-party intellectual property include amounts paid for third-party licenses and related maintenance that are incorporated into the Company's software, with the costs amortized to cost of revenues over the useful lives of the purchased assets.
	The amount of research and development expenses allocated to cost of revenues was $0.3 million and $0.4 million for the three months ended March 31, 2015 and 2014, respectively.
	The Company capitalizes certain personnel costs directly related to the implementation of its solutions to the extent those costs are considered to be recoverable from future revenues. The Company amortizes the costs for a particular implementation once revenue recognition commences, and the Company amortizes those implementation costs over the remaining term of the customer agreement. Other costs not directly recoverable from future revenues are expensed in the period incurred. The Company capitalized implementation costs in the amount of $0.9 million and $0.8 million during the three months ended March 31, 2015 and 2014, respectively.
	Software Development Costs
	Software development costs include salaries and other personnel-related costs, including employee benefits, bonuses and stock-based compensation, attributed to programmers, software engineers and quality control teams working on the Company's solutions. Costs related to software development incurred between reaching technological feasibility and the point at which the software solution is ready for general release have been insignificant through March 31, 2015, and accordingly all of the Company's software development costs have been expensed as incurred as research and development.
	Research and Development Costs
	Research and development costs include salaries and other personnel-related costs, including employee benefits, bonuses and stock-based compensation, third-party contractor expenses, software development tools, an allocation of facilities and depreciation expenses and other related expenses incurred in developing new solutions and upgrading and enhancing existing solutions. Research and development costs are expensed as incurred.
	Advertising
	All advertising costs of the Company are expensed the first time the advertising takes place. Advertising costs were less than $0.1 million for the three months ended March 31, 2015 and $0.1 million for the three months ended March 31, 2014.
	Sales Tax
	The Company presents sales taxes and other taxes collected from customers and remitted to governmental authorities on a net basis and, as such, excludes them from revenues.
Comprehensive Loss
Comprehensive loss includes net loss as well as other changes in stockholders' equity that result from transactions and economic events other than those with stockholders. Other comprehensive loss consists of net loss and unrealized gains and losses on investments.
Stock-Based Compensation
Stock options and restricted stock units awarded to employees, directors and consultants are measured at fair value at each grant date. The Company recognizes compensation expense ratably over the requisite service period of the option or restricted stock unit award. Generally, options vest 25% on the one-year anniversary of the grant date with the balance vesting monthly over the following 36 months, and restricted stock unit awards vest in four annual installments of 25% beginning on the one-year anniversary of the grant date.
The Company values stock options using the Black-Scholes option-pricing model, which requires the input of subjective assumptions, including the risk-free interest rate, expected life, expected stock price volatility and dividend yield. The risk-free interest rate assumption is based upon observed interest rates for constant maturity U.S. Treasury securities consistent with the expected term of the Company's employee stock options. The expected life represents the period of time the stock options are expected to be outstanding and is based on the simplified method. Under the simplified method, the expected life of an option is presumed to be the mid-point between the vesting date and end of the contractual term. The Company used the simplified method due to the lack of sufficient historical exercise data to provide a reasonable basis upon which to otherwise estimate the expected life of the stock options. Due to the Company’s limited history as a public company, expected volatility is based on historical volatilities for publicly traded stock of comparable companies over the estimated expected life of the stock options. The Company assumed no dividend yield because it does not expect to pay dividends in the near future, which is consistent with the Company's history of not paying dividends.
Income Taxes
Deferred income taxes are provided for the 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 and operating loss carryforwards and credits using enacted tax rates expected to be in effect in the years in which the differences are expected to reverse. The Company assesses the likelihood that deferred tax assets will be realized and recognizes a valuation allowance if it is more likely than not that some portion of the deferred tax assets will not be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction. To date, the Company has provided a full valuation allowance against its deferred tax assets as it believes the objective and verifiable evidence of its historical pretax net losses outweighs any positive evidence of its forecasted future results. Although the Company believes that its tax estimates are reasonable, the ultimate tax determination involves significant judgment that is subject to audit by tax authorities in the ordinary course of business. The Company will continue to monitor the positive and negative evidence, and it will adjust the valuation allowance as sufficient objective positive evidence becomes available.
The Company evaluates its uncertain tax positions based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings or positions is more likely than not to be realized. Potential interest and penalties associated with any uncertain tax positions are recorded as a component of income tax expense. Through March 31, 2015, the Company has not identified any material uncertain tax positions for which liabilities would be required to be recorded.
Basic and Diluted Net Loss per Common Share
The Company uses the two-class method to compute net loss per common share because the Company has previously issued securities, other than common stock, that contractually entitle the holders to participate in dividends and earnings of the Company. The two-class method requires earnings for the period to be allocated between common stock and participating securities based upon their respective rights to receive distributed and undistributed earnings. Holders of the Company's Series A, B and C preferred stock are entitled, on a pari passu basis, to receive dividends when, as and if declared by the board of directors, prior and in preference to any declaration or payment of any dividend on the common stock or junior convertible preferred stock until such time as the total dividends paid on each share of Series A, B and C preferred stock is equal to the original issue price of the shares. Holders of junior convertible preferred stock are entitled to receive a pro rata share of any dividend declared, based on the number of shares of common and preferred stock outstanding. As a result, all series of the Company's preferred stock are considered participating securities for the period of time that such securities are outstanding.
Under the two-class method, for periods with net income, basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Net income attributable to common stockholders is computed by subtracting from net income the portion of current year earnings that the participating securities would have been entitled to receive pursuant to their dividend rights had all of the year's earnings been distributed. No such adjustment to earnings is made during periods with a net loss, as the holders of the participating securities have no obligation to fund losses. Diluted net income per common share is computed under the two-class method by using the weighted-average number of shares of common stock outstanding plus, for periods with net income attributable to common stockholders, the potential dilutive effects of stock options and warrants. In addition, the Company analyzes the potential dilutive effect of the outstanding participating securities under the if-converted method when calculating diluted earnings per share, in which it is assumed that the outstanding participating securities convert into common stock at the beginning of the period. The Company reports the more dilutive of the approaches as its diluted net income per share during the period. Due to net losses for each of the three months ended March 31, 2015 and 2014, basic and diluted net loss per share were the same, as the effect of all potentially dilutive securities would have been anti-dilutive.
The following table sets forth the computations of loss per share for the periods listed:
		Three months ended March 31,
		2015				2014
Numerators:
Net loss attributable to common stockholders		$	(4,645	)		$	(5,566	)
Denominator:
Weighted-average common shares outstanding, basic and diluted		35,633				14,107
Net loss per common share, basic and diluted		$	(0.13	)		$	(0.39	)
The following table sets forth the anti-dilutive common share equivalents for the periods listed:
		Three months ended March 31,
		2015			2014
Redeemable convertible preferred stock:
Series A preferred stock		—			7,293
Series B preferred stock		—			1,677
Series C preferred stock		—			2,402
Junior preferred stock		—			1,154
Stock options and restricted stock units		5,927			6,278
Total anti-dilutive common share equivalents		5,927			18,804
Recent Accounting Pronouncements
In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU 2014-09, which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount an entity expects to be entitled to when products are transferred to customers. ASU 2014-09 will be effective for the Company beginning in its first quarter of 2017. Early adoption is not permitted. The new revenue standard may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. The Company is currently evaluating the impact of adopting the new revenue standard on its consolidated financial statements.
In April 2015, the Financial Accounting Standards Board issued Accounting Standards Update No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), or ASU 2015-03, which seeks to simplify the presentation of debt issuance costs. ASU 2015-03 will require that debt issuance costs be classified as a contra-liability against any outstanding borrowings related to such debt issuance costs, rather than as a separate asset. ASU 2015-03 will be effective for the Company beginning in its first quarter of 2016. Early adoption is permitted. The Company is currently evaluating the impact of adopting ASU 2015-03 on its consolidated financial statements.
Subsequent Events
The Company has evaluated subsequent events through May 8, 2015, the date of filing of this Form 10-Q.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	The carrying values of the Company's financial instruments, principally cash equivalents, investments, accounts receivable, restricted cash and accounts payable, approximated their fair values due to the short period of time to maturity or repayment. The carrying values of the Company's debt instruments approximated their fair value based on rates currently available to the Company.
	Fair value is defined as the exchange price that would be received for an asset or an exit price paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The current accounting guidance for fair value measurements defines a three-level valuation hierarchy for disclosures as follows:
	•	Level I—Unadjusted quoted prices in active markets for identical assets or liabilities;
	•	Level II—Inputs other than quoted prices included within Level I that are observable, unadjusted quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data; and
	•	Level III—Unobservable inputs that are supported by little or no market activity, which requires the Company to develop its own assumptions.
	The categorization of a financial instrument within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.
	The following table details the fair value hierarchy of the Company's financial assets measured at fair value on a recurring basis as of March 31, 2015:
					Fair Value Measurements Using:
	Cash Equivalents:		Fair Value		Quoted Prices		Significant Other		Significant
					in Active		Observable Inputs		Unobservable
					Markets for		(Level 2)		Inputs
					Identical Assets				(Level 3)
					(Level 1)
	Money market funds		$	14,059	$	14,059	$	—	$	—
	Certificates of deposits		735		—		735		—
			$	14,794	$	14,059	$	735	$	—
	Investments:		Fair Value		Quoted Prices		Significant Other		Significant
					in Active		Observable Inputs		Unobservable
					Markets for		(Level 2)		Inputs
					Identical Assets				(Level 3)
					(Level 1)
	U.S. treasuries and agency bonds		$	10,553	$	—	$	10,553	$	—
	Corporate bonds and commercial paper		8,316		—		8,316		—
	Certificates of deposit		6,656		—		6,656		—
			$	25,525	$	—	$	25,525	$	—
	The following table details the fair value hierarchy of the Company's financial assets measured at fair value on a recurring basis as of December 31, 2014:
					Fair Value Measurements Using:
	Cash Equivalents:		Fair Value		Quoted Prices		Significant Other		Significant
					in Active		Observable Inputs		Unobservable
					Markets for		(Level 2)		Inputs
					Identical Assets				(Level 3)
					(Level 1)
	Money market funds		$	17,865	$	17,865	$	—	$	—
	Certificates of deposits		1,456		—		1,456		—
			$	19,321	$	17,865	$	1,456	$	—
	Investments:		Fair Value		Quoted Prices		Significant Other		Significant
					in Active		Observable Inputs		Unobservable
					Markets for		(Level 2)		Inputs
					Identical Assets				(Level 3)
					(Level 1)
	U.S. treasuries and agency bonds		$	7,502	$	—	$	7,502	$	—
	Corporate bonds and commercial paper		6,192		—		6,192		—
	Certificates of deposit		7,262		—		7,262		—
			$	20,956	$	—	$	20,956	$	—
	The Company determines the fair value of its investment holdings based on pricing from our pricing vendors. The valuation techniques used to measure the fair value of financial instruments having Level 2 inputs were derived from non-binding consensus prices that are corroborated by observable market data or quoted market prices for similar instruments. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs).

Cash_Cash_Equivalents_and_Inve

Cash, Cash Equivalents and Investments	3 Months Ended
	Mar. 31, 2015
Cash and Cash Equivalents [Abstract]
Cash, Cash Equivalents and Investments	Cash, Cash Equivalents and Investments
	The Company's cash, cash equivalents and investments as of March 31, 2015 and December 31, 2014 consisted primarily of cash, U.S. government agency bonds, corporate bonds, commercial paper, certificates of deposits and money market funds.
	The Company classifies investments as available-for-sale at the time of purchase and reevaluates such classification as of each balance sheet date. All investments are recorded at estimated fair value. Unrealized gains and losses on available-for-sale investments are included in accumulated other comprehensive loss, a component of stockholders' equity. The Company evaluates its investments to assess whether those with unrealized loss positions are other than temporarily impaired. The Company considers impairments to be other than temporary if they are related to deterioration in credit risk or if it is likely the Company will sell the investments before the recovery of their cost basis. Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in other income (expense), net, in the condensed consolidated statements of comprehensive loss. Interest, amortization of premiums, and accretion of discount on all investments classified as available-for-sale are also included as a component of other income (expense), net, in the condensed consolidated statements of comprehensive loss.
	As of March 31, 2015 and December 31, 2014, the Company's cash was $79.4 million and $48.7 million, respectively.
	A summary of the Company's cash equivalents and investments as of March 31, 2015 is as follows:
	Cash Equivalents:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Money market funds	$	14,059	$	—		$	—		$	14,059
	Certificates of deposits	735		—			—			735
		$	14,794	$	—		$	—		$	14,794
	Investments:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	U.S. government agency bonds	$	10,553	$	—		$	—		$	10,553
	Corporate bonds and commercial paper	8,320		—			(4		)	8,316
	Certificates of deposits	6,656		—			—			6,656
		$	25,529	$	—		$	(4	)	$	25,525
	A summary of the Company's cash equivalents and investments as of December 31, 2014 is as follows:
	Cash Equivalents:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Money market funds	$	17,865	$	—		$	—		$	17,865
	Certificates of deposits	1,456		—			—			1,456
		$	19,321	$	—		$	—		$	19,321
	Investments:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	U.S. government agency bonds	$	7,508	$	—		$	(6	)	$	7,502
	Corporate bonds and commercial paper	6,200		—			(8		)	6,192
	Certificates of deposits	7,262		—			—			7,262
		$	20,970	$	—		$	(14	)	$	20,956
	The Company may sell its investments at any time, without significant penalty, for use in current operations or for other purposes, even if they have not yet reached maturity. As a result, the Company classifies its investments, including investments with maturities beyond twelve months, as current assets in the accompanying condensed consolidated balance sheets.
	The following table summarizes the estimated fair value of the Company's investments, designated as available-for-sale and classified by the contractual maturity date of the investments as of the dates shown:
		31-Mar-15		December 31, 2014
	Due within one year or less	$	12,749	$	9,095
	Due after one year through five years	12,776		11,861
	Total	$	25,525	$	20,956
	The Company has certain available-for-sale investments in a gross unrealized loss position, all of which have been in such position for less than twelve months. The Company reviews its debt securities classified as short-term investments on a regular basis to evaluate whether or not any security has experienced an other than temporary decline in fair value. The Company considers factors such as the length of time and extent to which the market value has been less than the cost, the financial position and near-term prospects of the issuer and its intent to sell, or whether it is more likely than not the Company will be required to sell the investment before recovery of the investment's amortized-cost basis. If the Company determines that an other than temporary decline exists in one of these investments, the respective investment would be written down to fair value. For debt securities, the portion of the write-down related to credit loss would be recognized to other income, net in the condensed consolidated statements of comprehensive loss. Any portion not related to credit loss would be included in accumulated other comprehensive loss. Because the Company does not intend to sell any investments which have an unrealized loss position at this time, and it is not more likely than not that the Company will be required to sell the investment before recovery of its amortized cost basis, which may be maturity, the Company does not consider the investments with unrealized loss positions to be other than temporarily impaired as of March 31, 2015.
	The following table shows the fair values and the gross unrealized losses of these available-for-sale investments aggregated by investment category as of March 31, 2015:
		Fair Value		Gross Unrealized Loss
	U.S. government agency bonds	$	10,553	$	—
	Corporate bonds and commercial paper	8,320		(4		)
	Total	$	18,873	$	(4	)
	The following table shows the fair values and the gross unrealized losses of these available-for-sale investments aggregated by investment category as of December 31, 2014:
		Fair Value		Gross Unrealized Loss
	U.S. government agency bonds	$	7,508	$	(6	)
	Corporate bonds and commercial paper	6,200		(8		)
	Total	$	13,708	$	(14	)

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	Debt
	In April 2013 the Company entered into a secured credit facility agreement, or Credit Facility, with Wells Fargo Bank, National Association, or Wells Fargo, which the Company and Wells Fargo subsequently amended on March 24, 2014 and again on August 11, 2014. The Credit Facility, as amended, provides for a line of credit of up to $25.0 million, with an accordion feature, or Accordion Feature, allowing the Company to increase its maximum borrowings by up to an additional $25.0 million, subject to certain conditions and limitations, including that borrowings at any time shall be limited to 75% of the Company's trailing twelve-month recurring revenues. Access to the total borrowings available under the Credit Facility is restricted based on covenants related to the Company's minimum liquidity and adjusted EBITDA. Amounts borrowed under the Credit Facility accrue interest, at the Company's election at either: (i) the per annum rate equal to the LIBOR rate plus an applicable margin; or (ii) the current base rate plus the greater of the U.S. Federal Funds rate plus one percentage point, the one-month LIBOR plus one percentage point, or the lending financial institution's prime rate. The Company pays a monthly fee based on the total unused borrowings balance, an annual administrative fee and the initial closing fee, which is paid in three equal annual installments over the first three years of the Credit Facility. The Accordion Feature expires in October 2016, at which time maximum borrowings under the Facility are reduced to $25.0 million, and the Credit Facility matures in April 2017, at which time any outstanding borrowings and accrued interest become payable.
	As of March 31, 2015, the Company had no borrowings outstanding and only a secured letter of credit of $3.0 million against the Credit Facility, leaving an available balance of approximately $22.0 million, and the interest rate applicable to the Credit Facility was 3.2%. The Credit Facility is collateralized by substantially all of the Company's assets and requires that the Company maintain certain financial covenants as provided in the Credit Facility. The Company was in compliance with all financial covenants as of March 31, 2015.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Operating and Capital Lease Commitments
	The Company leases office space for its corporate headquarters in Austin, Texas under a non-cancelable operating lease that expires in April 2021 and a regional sales office in Atlanta, Georgia under a non-cancelable operating lease that expires in January 2016. Rent expense under operating leases was $0.3 million for each of the three months ended March 31, 2015 and 2014, respectively.
	The Company has entered into various capital lease arrangements to obtain property and equipment for its data center and corporate operations. These agreements expire over various terms from February 2016 through June 2016 and the leases are secured by the underlying leased property and equipment.
	Legal Proceedings
	From time to time, the Company may become involved in legal proceedings arising in the ordinary course of its business. The Company is not presently a party to any legal proceedings that, if determined adversely to the Company, would have a material adverse effect on the Company.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Stockholders' Equity	Stockholder's Equity
	Initial Public Offering
	On March 25, 2014, the Company completed its IPO of 7,761 shares of common stock at $13.00 per share. The total shares sold in the IPO included 1,511 shares sold by selling stockholders. After deducting the payment of underwriters' discounts and commissions and offering costs, the net proceeds to the Company from the sale of shares in the offering were approximately $72.6 million.
	On April 2, 2014, pursuant to the terms of the Company's IPO, which occurred on March 25, 2014, the underwriters exercised their option to purchase an additional 1,164 shares to cover over-allotments. After deducting the payment of underwriters' discounts and commissions and offering costs, the Company received net proceeds from the sale of shares totaling approximately $13.7 million.
	Follow-On Offering
	On March 4, 2015, the Company completed its follow-on offering of 5,122 shares of common stock at $19.75 per share, and sold an additional 768 shares of common stock at $19.75 per share when the underwriters exercised their over-allotment option to purchase additional shares. The total shares sold in the follow-on offering and shares sold when the underwriters exercised their over-allotment option included 4,133 shares sold by selling stockholders. After deducting the payment of underwriters' discounts and commissions and offering costs, including offering costs incurred but not paid as of March 31, 2015, the net proceeds to the Company from the sale of shares in the offering and the sale of shares when the underwriters exercised their over-allotment option was approximately $32.3 million.
	Conversion of Redeemable Common and Preferred Stock
	Immediately prior to the closing of the IPO, which was completed on March 25, 2014, each share of the Company's outstanding preferred, junior preferred and redeemable common stock was converted into one share of undesignated common stock. The following table presents the conversion of all classes of stock on March 25, 2014:
		Prior to Conversion	Subsequent to Conversion
	Convertible preferred stock
	Series A	7,908	—
	Series B	1,818	—
	Series C	2,605	—
	Redeemable common stock	3,829	—
	Junior preferred stock	1,251	—
	Undesignated common stock	—	17,412

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation
	In March 2014, the Company's board of directors approved the 2014 Equity Incentive Plan, or 2014 Plan, under which stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares and units and other cash-based or stock-based awards may be granted to employees, consultants and directors. Shares of common stock that are issued and available for issuance under the 2014 Plan consist of authorized, but unissued or reacquired shares of common stock or any combination thereof.
	A total of 1,850 shares of the Company's common stock was initially authorized and reserved for issuance under the 2014 Plan. This reserve will automatically increase on January 1, 2016 and each subsequent anniversary through 2024, by an amount equal to the smaller of (a) 4.5% of the number of shares of common stock issued and outstanding on the immediately preceding December 31, or (b) an amount determined by the Company's board of directors. This reserve is automatically increased to include any outstanding shares under the Company's 2007 Stock Plan, or 2007 Plan, at the time of its termination or issuable upon expiration or termination of options granted under the Company's 2007 Plan that expire or terminate without having been exercised in full. Pursuant to the terms of the 2014 Plan, 107 shares available for future issuance under the 2007 Plan were transferred to the 2014 Plan, providing a total of 1,957 shares of common stock allocated for issuance under the 2014 Plan. On January 1, 2015, 1,561 shares were added to the 2014 Plan in accordance with the annual automatic increase provision of the 2014 Plan, and 93 shares have been returned to the 2014 Plan as a result of termination of options that expired or terminated without having been exercised under the previously terminated 2007 Plan, resulting in a total of 3,611 shares available for issuance under the 2014 Plan. As of March 31, 2015, options to purchase a total of 953 shares of common stock have been granted under the 2014 Plan in the form of stock options, 226 shares have been reserved for the future vesting of restricted stock awards, 13 shares have been returned to the 2014 Plan as a result of termination of options that expired or terminated without having been exercised and restricted stock awards that terminated prior to the awards vesting, and 2,445 shares of common stock remain available for future issuance under the 2014 Plan.
	In July 2007, the Company adopted the 2007 Plan under which options or stock purchase rights may be granted to employees, consultants and directors. In February 2014, the board of directors, under the authority granted to it by the 2007 Plan, increased the number of shares available to be granted under the plan by 1,400 shares, and as of March 31, 2015, a total of 9,128 shares of common stock were allocated for issuance under the plan. Upon the completion of the Company's IPO in March 2014, the board of directors terminated the 2007 Plan in connection with the IPO and pursuant to the terms of the 2014 Plan, 107 shares that were available for future issuance under the 2007 Plan at such time were transferred to the 2014 Plan. No shares remain available for future issuance of awards under the 2007 Plan. The 2007 Plan will continue to govern the terms and conditions of all outstanding equity awards granted under the 2007 Plan. Shares of common stock that are issued and were available for issuance under the 2007 Plan consist of authorized, but unissued or reacquired shares of common stock or any combination thereof.
	Stock Options
	The following summarizes the assumptions used for estimating the fair value of stock options granted during the periods indicated:
		Three Months Ended March 31,
		2015		2014
	Risk-free interest rate	1.50%		1.2 - 2.1%
	Expected life (in years)	4.8		3.8 - 6.8
	Expected volatility	46.1 - 46.9%		45.1 - 45.2%
	Dividend yield	—		—
	Weighted-average grant date fair value per share	$8.25		$5.39
	Stock option activity during the three months ended March 31, 2015 was as follows:
		Number of			Weighted
		Options			Average
					Exercise Price
	Balance as of January 1, 2015	6,111			$	5.9
	Granted	375			20.25
	Exercised	(735	)		1.71
	Forfeited	(49	)		8.58
	Balance as of March 31, 2015	5,702			$	7.36
	The summary of stock options outstanding as of March 31, 2015 is as follows:
		Options Outstanding						Options Exercisable
	Range of Exercise Prices	Number of			Weighted		Weighted	Number of	Weighted		Weighted
		Options			Average		Average	Options	Average		Average
					Exercise		Remaining		Exercise		Remaining
					Price		Contractual Life		Price		Contractual Life
							(in years)				(in years)
	$0.29 - $0.35	561			$	0.33	2.9	561	$	0.33	2.9
	$0.54 - $0.84	358			0.71		4.7	358	0.71		4.7
	$1.74 - $3.10	952			2.86		6.3	788	2.81		6.2
	$4.00 - $7.82	1,198			6.98		5.4	542	6.67		5.4
	$8.35	1,692			8.35		5.8	91	8.35		5.8
	$13.00 - $21.37	941			17.34		6.6	27	13		6
		5,702			$	7.36	5.6	2,367	$	3.12	5
	The aggregate intrinsic value of stock options exercised during each of the three months ended March 31, 2015 and 2014 was $13.3 million and $7.5 million, respectively. The total fair value of stock options vested during each of the three months ended March 31, 2015 and 2014 was $1.1 million and $0.4 million, respectively. As of March 31, 2015, total unrecognized stock-based compensation expense, adjusted for estimated forfeitures, related to stock options was $14.8 million, which the Company expects to recognize over the next 3.0 years.
	Restricted Stock Units
	The Company’s restricted stock units vest over a four-year period and upon vesting, the vested shares are issued to the recipient of the restricted stock units.
	The summary of restricted stock unit activity is as follows:
		Number of			Weighted
		Shares			Average
					Grant Date Fair Value
	Nonvested as of January 1, 2015	28			$	19.44
	Granted	198			20.43
	Vested	—			—
	Forfeited	(1	)		20.91
	Nonvested as of March 31, 2015	225			$	20.3
	As of March 31, 2015, total unrecognized stock-based compensation expense, adjusted for estimated forfeitures, related to restricted stock was $4.4 million, which the Company expects to recognize over the next 3.9 years.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	In accordance with applicable accounting guidance, the income tax provision for the three month periods ended March 31, 2015 is based on the estimated annual effective tax rate for fiscal year 2015. The estimated effective tax rate may be subject to adjustment in subsequent quarterly periods as the estimates of pretax income for the year, along with other items that may affect the rate, change.
	The Company's provision for income taxes reflected an effective tax rate of approximately 0.7% and 0.3% for three months ended March 31, 2015 and 2014, respectively. For the three months ended March 31, 2015 and 2014, the Company's effective tax rate was lower than the U.S. federal statutory rate primarily due to changes to its valuation allowance.
	The Company has significant deferred tax assets related to its net operating loss carryforwards and tax credits and has provided a valuation allowance for the full amount of its deferred tax assets, as it is not more likely than not that any future benefit from deductible temporary differences, net operating loss carryforwards, and tax credit carryforwards will be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction.
	To date, the Company has provided a full valuation allowance against its deferred tax assets as it believes the objective and verifiable evidence of its historical pretax net losses outweighs any positive evidence of its forecasted future results. Although the Company believes that its tax estimates are reasonable, the ultimate tax determination involves significant judgment that is subject to audit by tax authorities in the ordinary course of business. The Company will continue to monitor the positive and negative evidence, and it will adjust the valuation allowance as sufficient objective positive evidence becomes available.
	The Company had no unrecognized tax benefits as of March 31, 2015. The Company's tax years 2011 through 2014 remain open to examination by the major taxing jurisdictions to which the Company is subject. However, the Company is not currently under examination by any taxing jurisdiction.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	On May 1, 2015, the Company entered into a First Amendment to Lease Agreement (the “Amendment”) amending the Lease Agreement, dated July 18, 2014, with CREF Aspen Lake Building II, LLC, which originally provided for the lease of approximately 70,000 square feet (the "Original Premises") of office space in an office building to be located immediately adjacent to the Company's current headquarters (the "Original Lease," and as amended, the "Lease"). Pursuant to the Amendment, the Company has agreed to lease an additional approximately 34,000 square feet commencing on May 1, 2016, and an additional approximately 25,000 square feet commencing January 1, 2017.
	The Amendment also extends the term of the Original Lease. The Lease, as amended, provides for phased commencement dates with respect to the Original Premises, with commencement of the first phase covering 55,000 square feet anticipated to occur on October 1, 2015 (the “Initial Commencement Date”), and the remaining 15,000 square feet of the Original Premises commencing nine months thereafter. The actual commencement dates for the Original Premises are subject to timely completion of the building and premises. The term of the Lease, as amended, commences on the Initial Commencement Date and runs until April 30, 2028, with a ten year renewal option, and the rent obligations under the Lease begin with monthly rents of $98, which escalate over the course of the Lease to $311 per month in the final seven months of the Lease's term.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	As used in this report, the terms "we," "us," or "our" refer to Q2 Holdings, Inc. and its wholly-owned subsidiary. These interim unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, and Securities and Exchange Commission, or SEC, requirements for interim financial statements. The interim unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary. All intercompany accounts and transactions have been eliminated in consolidation.
Principles of Consolidation	In the Company's opinion, the accompanying interim unaudited condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting of normal, recurring adjustments, necessary for a fair presentation. Certain information and disclosures normally included in the notes to the annual consolidated financial statements prepared in accordance with GAAP have been omitted from these interim unaudited condensed consolidated financial statements pursuant to the rules and regulations of the SEC. Accordingly, these interim unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the accompanying notes for the fiscal year ended December 31, 2014, which are included in the Company's Annual Report on Form 10-K, filed with the SEC on February 12, 2015. The results of operations for the three months ended March 31, 2015 are not necessarily indicative of the results to be expected for the year ending December 31, 2015 or for any other period.
Use of Estimates	Use of Estimates
	The preparation of the accompanying interim unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the interim unaudited condensed consolidated financial statements, and the reported amounts of revenues and expenses. Significant items subject to such estimates include stock-based compensation, the useful lives of property and equipment and income taxes. In accordance with GAAP, management bases its estimates on historical experience and on various other assumptions that management believes are reasonable under the circumstances. Management regularly evaluates its estimates and assumptions using historical experience and other factors; however, actual results could differ significantly from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents
	The Company considers all highly liquid investments acquired with an original maturity of ninety days or less at the date of purchase to be cash equivalents. Cash equivalents are stated at cost or fair value based on the underlying security.
Restricted Cash	Restricted Cash
	Restricted cash consists of deposits held in checking and money market accounts for leased office space.
Investments	Investments
	Investments consist primarily of U.S. government agency bonds, corporate bonds, commercial paper, certificates of deposits and money market funds. All investments are considered available for sale and are carried at fair value.
Concentration of Credit Risk	Concentration of Credit Risk
	Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash and cash equivalents, restricted cash, investments and accounts receivable. The Company's cash and cash equivalents and restricted cash are placed with high credit quality financial institutions and issuers, and at times may exceed federally-insured limits. The Company has not experienced any loss relating to cash and cash equivalents or restricted cash in these accounts. The Company provides credit, in the normal course of business, to a number of its customers. The Company performs periodic credit evaluations of its customers' financial condition and generally does not require collateral.
Accounts Receivable	Accounts Receivable
	Accounts receivable are stated at net realizable value, including both billed and unbilled receivables to customers. Unbilled receivable balances arise primarily when the Company provides services in advance of billing for these services and also when the Company earns revenues based on the number of registered users and the number of bill-pay and certain other transactions that registered users perform on the Company's virtual banking solutions in excess of the levels included in the Company's minimum subscription fee. Generally, billing for revenues related to the number of registered users and the number of transactions processed by our registered users occurs one month in arrears. Included in the accounts receivable balances as of March 31, 2015 and December 31, 2014 were unbilled receivables of $2.9 million and $2.3 million, respectively.
	The Company assesses the collectability of outstanding accounts receivable on an ongoing basis and maintains an allowance for doubtful accounts for accounts receivable deemed uncollectable. This allowance is recorded as a reduction against accounts receivable. As of March 31, 2015 and December 31, 2014, the Company did not provide for an allowance for doubtful accounts, as all amounts outstanding were deemed collectable. Historically, the Company's collection experience has not varied significantly, and bad debt expenses have been insignificant.
	The Company maintains a reserve for estimated sales credits issued to customers for billing disputes or other service-related reasons. This allowance is recorded as a reduction against current period revenues and accounts receivable. In estimating this allowance, the Company analyzes prior periods to determine the amounts of sales credits issued to customers compared to the revenues in the period that related to the original customer invoice. This estimate is analyzed quarterly and adjusted as necessary.
Deferred Implementation Costs and Deferred Solution and Other Costs	Deferred Implementation Costs
	The Company capitalizes certain personnel and other costs, such as employee salaries, benefits and the associated payroll taxes that are direct and incremental to the implementation of its solutions. The Company analyzes implementation costs that may be capitalized to assess their recoverability, and only capitalizes costs that it anticipates to be recoverable. The Company assesses the recoverability of its deferred implementation costs by comparing the greater of the amount of the non-cancellable portion of a customer's contract and the non-refundable customer prepayments received as it relates to the specific implementation costs incurred. The Company begins amortizing the deferred implementation costs for an implementation once the revenue recognition criteria have been met and the Company amortizes those deferred implementation costs ratably over the remaining term of the customer agreement. The portion of deferred implementation costs expected to be amortized during the succeeding twelve-month period is recorded in current assets as deferred implementation costs, current portion, and the remainder is recorded in long-term assets as deferred implementation costs, net of current portion.
	Deferred Solution and Other Costs
	The Company capitalizes sales commissions and other third-party costs, such as third party licenses and maintenance related to its customer agreements. The Company capitalizes sales commissions because the commission charges are so closely related to the revenues from the non-cancellable customer agreements that they should be recorded as an asset and charged to expense over the same period that the related revenue is recognized. The Company begins amortizing deferred solution and other costs for a particular customer agreement once the revenue recognition criteria are met and amortizes those deferred costs over the remaining term of the customer agreement. The Company analyzes solution and other costs that may be capitalized to assess their recoverability and only capitalizes costs that it anticipates to be recoverable. The portion of capitalized costs expected to be amortized during the succeeding twelve-month period is recorded in current assets as deferred solution and other costs, current portion, and the remainder is recorded in long-term assets as deferred solution and other costs, net of current portion.
Property and Equipment	Property and Equipment
	Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is calculated on a straight-line basis over the estimated useful lives of the related assets. Leasehold improvements are amortized over the shorter of the lease term or the estimated useful lives of the related assets. Maintenance and repairs that do not extend the life of or improve an asset are expensed in the period incurred.
	The estimated useful lives of property and equipment are as follows:
	Computer hardware and equipment		3 - 5 years
	Purchased software and licenses		3 - 5 years
	Furniture and fixtures		7 years
	Leasehold improvements		Lesser of estimated useful life or lease term
Deferred Revenues	Deferred Revenues
	Deferred revenues primarily consist of amounts that have been billed to or received from customers in advance of revenue recognition and prepayments received from customers in advance for implementation, maintenance and other services, as well as initial subscription fees. The Company recognizes deferred revenues as revenues when the services are performed and the corresponding revenue recognition criteria are met. Customer prepayments are generally applied against invoices issued to customers when services are performed and billed. Deferred revenues that are expected to be recognized as revenues during the succeeding twelve month period are recorded in current liabilities as deferred revenues, current portion and the remaining portion is recorded in long-term liabilities as deferred revenues, net of current portion.
Revenues	Revenues
	All revenue-generating activities are directly related to the sale, implementation and support of the Company's solutions within a single operating segment. The Company derives the substantial majority of its revenues from subscription fees for the use of its solutions hosted in the Company's data centers as well as revenues for implementation and customer support services related to the Company's solutions. A small portion of the Company's customers host the Company's solutions in their own data centers under term license and maintenance agreements, and the Company recognizes the corresponding revenues ratably over the term of those customer agreements.
	Revenues are recognized net of sales credits and allowances. The Company begins to recognize revenues for a customer when all of the following criteria are satisfied:
	•	there is persuasive evidence of an arrangement;
	•	the service has been or is being provided to the customer;
	•	the collection of the fees is reasonably assured; and
	•	the amount of fees to be paid by the customer is fixed or determinable.
	Determining whether and when these criteria have been met can require significant judgment and estimates. In general, revenue recognition commences when the Company's solutions are implemented and made available to the customers.
	The Company's software solutions are available for use in hosted application arrangements under subscription fee agreements. Subscription fees from these applications, including related customer support, are recognized ratably over the customer agreement term beginning on the date the solution is made available to the customer. Amounts that have been invoiced are recorded in accounts receivable and deferred revenues or revenues, depending on whether the Company's revenue recognition criteria have been met.
	The Company considers subscription fees to be fixed or determinable unless the fees are subject to refund or adjustment or are not payable within the Company's standard payment terms. In determining whether collection of subscription fees is reasonably assured, the Company considers financial and other information about customers, such as a customer's current credit-worthiness and payment history over time. Historically, bad debt expenses have not been significant.
	The Company enters into arrangements with multiple-deliverables that generally include multiple subscriptions and implementation services. Additional agreements with existing customers that are not in close proximity to the original arrangements are treated as separate contracts for accounting purposes.
	For multiple-deliverable arrangements, arrangement consideration is allocated to deliverables based on their relative selling price. In order to treat deliverables in a multiple-deliverable arrangement as separate units of accounting, the deliverables must have standalone value upon delivery. The Company's subscription services have standalone value as such services are often sold separately. In determining whether implementation services have standalone value apart from the subscription services, the Company considers various factors including the availability of the services from other vendors. To date, the Company has concluded that the implementation services included in multiple-deliverable arrangements do not have standalone value. As a result, when implementation services are sold in a multiple-deliverable arrangement, the Company defers any arrangement fees for implementation services and recognizes such amounts ratably over the period of performance for the initial agreement term.
	When multiple-deliverables included in an arrangement are separated into different units of accounting, the arrangement consideration is allocated to the identified separate units based on a relative selling price hierarchy. The selling price for a deliverable is based on its vendor-specific objective evidence of selling price, or VSOE, if available, third-party evidence of selling price, or TPE, if VSOE is not available or best estimate of selling price, or BESP, if neither VSOE nor TPE is available. The Company has not established VSOE for its subscription services due to lack of pricing consistency, the introduction of new services and other factors. The Company has determined that TPE is not a practical alternative due to differences in its service offerings compared to other parties and the availability of relevant third-party pricing information. Accordingly, the Company uses BESP to determine the relative selling price. The amount of revenue allocated to delivered items is limited by contingent revenues.
	The Company determines BESP by considering its overall pricing objectives and market conditions. Significant pricing practices taken into consideration include the Company's discounting practices, the size and volume of its transactions, customer characteristics, price lists, go-to-market strategy, historical standalone sales and agreement prices. As the Company's go-to-market strategies evolve, it may modify its pricing practices in the future, which could result in changes in relative selling prices, and include both VSOE and BESP.
	Subscription Fee Revenues
	The Company's solutions are available as hosted solutions under subscription fee agreements without licensing perpetual rights to the software. Subscription fees from a hosted solution are recognized monthly over the customer agreement term beginning on the date the Company's solution is made available to the customer. Additional fees for monthly usage above the levels included in the standard subscription fee, which include fees for transactions processed during the period, are recognized as revenue in the month when the usage amounts are determined and reported. Any revenues related to upfront implementation services are recognized ratably over the same customer agreement term. Amounts that have been invoiced are recorded in accounts receivable and deferred revenues or revenues, depending on whether the revenue recognition criteria have been met.
	Professional Services Revenues
	When professional services are not combined with subscription services or term licenses as a single unit of accounting, these professional services revenues are recognized as the services are performed.
	Certain out-of-pocket expenses billed to customers are recorded as revenues rather than an offset to the related expense. Revenues recorded from out-of-pocket expense reimbursements totaled approximately $0.2 million and $0.1 million during the three months ended March 31, 2015 and 2014, respectively. The out-of-pocket expenses are reported in cost of revenues.
	Term Licenses and Maintenance Revenues
	A small portion of the Company's customers host and manage the Company's solutions on-premises or in third-party data centers under term license and maintenance agreements. Term licenses sold with maintenance, which entitles the customer to technical support and upgrades and updates to the software made available on a when-and-if-available basis, are accounted for under Accounting Standards Codification 985-605, "Software Revenue Recognition." The Company does not have VSOE of fair value for the maintenance and professional services so the entire arrangement consideration is recognized monthly over the term of the software license when all of the other revenue recognition criteria have been met. Revenues from term licenses and maintenance agreements were not significant in the periods presented.
Cost of Revenues	Cost of Revenues
	Cost of revenues is comprised primarily of salaries and other personnel-related costs, including employee benefits, bonuses and stock-based compensation, for employees providing services to the Company's customers. Costs associated with these services include the costs of the Company's implementation, customer support, data center and customer training personnel as well as reclassification of certain research and development expenses related to research and development personnel who perform services related to implementation and customer support. Cost of revenues also includes the direct costs of bill-pay and other third-party intellectual property included in the Company's solutions, the amortization of deferred solution and services costs, co-location facility costs and depreciation of the Company's data center assets, an allocation of general overhead costs and referral fees. Direct costs of third-party intellectual property include amounts paid for third-party licenses and related maintenance that are incorporated into the Company's software, with the costs amortized to cost of revenues over the useful lives of the purchased assets.
	The amount of research and development expenses allocated to cost of revenues was $0.3 million and $0.4 million for the three months ended March 31, 2015 and 2014, respectively.
	The Company capitalizes certain personnel costs directly related to the implementation of its solutions to the extent those costs are considered to be recoverable from future revenues. The Company amortizes the costs for a particular implementation once revenue recognition commences, and the Company amortizes those implementation costs over the remaining term of the customer agreement. Other costs not directly recoverable from future revenues are expensed in the period incurred.
Software Development Costs	Software Development Costs
	Software development costs include salaries and other personnel-related costs, including employee benefits, bonuses and stock-based compensation, attributed to programmers, software engineers and quality control teams working on the Company's solutions. Costs related to software development incurred between reaching technological feasibility and the point at which the software solution is ready for general release have been insignificant through March 31, 2015, and accordingly all of the Company's software development costs have been expensed as incurred as research and development.
Research and Development Costs	Research and Development Costs
	Research and development costs include salaries and other personnel-related costs, including employee benefits, bonuses and stock-based compensation, third-party contractor expenses, software development tools, an allocation of facilities and depreciation expenses and other related expenses incurred in developing new solutions and upgrading and enhancing existing solutions. Research and development costs are expensed as incurred.
Advertising (less than $0.1 million for the thrree months ended March 31, 2015)	Advertising
	All advertising costs of the Company are expensed the first time the advertising takes place.
Sales Tax	Sales Tax
	The Company presents sales taxes and other taxes collected from customers and remitted to governmental authorities on a net basis and, as such, excludes them from revenues.
Comprehensive Loss	Comprehensive Loss
	Comprehensive loss includes net loss as well as other changes in stockholders' equity that result from transactions and economic events other than those with stockholders. Other comprehensive loss consists of net loss and unrealized gains and losses on investments.
Stock-Based Compensation	Stock-Based Compensation
	Stock options and restricted stock units awarded to employees, directors and consultants are measured at fair value at each grant date. The Company recognizes compensation expense ratably over the requisite service period of the option or restricted stock unit award. Generally, options vest 25% on the one-year anniversary of the grant date with the balance vesting monthly over the following 36 months, and restricted stock unit awards vest in four annual installments of 25% beginning on the one-year anniversary of the grant date.
	The Company values stock options using the Black-Scholes option-pricing model, which requires the input of subjective assumptions, including the risk-free interest rate, expected life, expected stock price volatility and dividend yield. The risk-free interest rate assumption is based upon observed interest rates for constant maturity U.S. Treasury securities consistent with the expected term of the Company's employee stock options. The expected life represents the period of time the stock options are expected to be outstanding and is based on the simplified method. Under the simplified method, the expected life of an option is presumed to be the mid-point between the vesting date and end of the contractual term. The Company used the simplified method due to the lack of sufficient historical exercise data to provide a reasonable basis upon which to otherwise estimate the expected life of the stock options. Due to the Company’s limited history as a public company, expected volatility is based on historical volatilities for publicly traded stock of comparable companies over the estimated expected life of the stock options. The Company assumed no dividend yield because it does not expect to pay dividends in the near future, which is consistent with the Company's history of not paying dividends.
Income Taxes	Income Taxes
	Deferred income taxes are provided for the 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 and operating loss carryforwards and credits using enacted tax rates expected to be in effect in the years in which the differences are expected to reverse. The Company assesses the likelihood that deferred tax assets will be realized and recognizes a valuation allowance if it is more likely than not that some portion of the deferred tax assets will not be realized. This assessment requires judgment as to the likelihood and amounts of future taxable income by tax jurisdiction. To date, the Company has provided a full valuation allowance against its deferred tax assets as it believes the objective and verifiable evidence of its historical pretax net losses outweighs any positive evidence of its forecasted future results. Although the Company believes that its tax estimates are reasonable, the ultimate tax determination involves significant judgment that is subject to audit by tax authorities in the ordinary course of business. The Company will continue to monitor the positive and negative evidence, and it will adjust the valuation allowance as sufficient objective positive evidence becomes available.
	The Company evaluates its uncertain tax positions based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings or positions is more likely than not to be realized. Potential interest and penalties associated with any uncertain tax positions are recorded as a component of income tax expense. Through March 31, 2015, the Company has not identified any material uncertain tax positions for which liabilities would be required to be recorded.
Basic and Diluted Net Loss per Common Share	Basic and Diluted Net Loss per Common Share
	The Company uses the two-class method to compute net loss per common share because the Company has previously issued securities, other than common stock, that contractually entitle the holders to participate in dividends and earnings of the Company. The two-class method requires earnings for the period to be allocated between common stock and participating securities based upon their respective rights to receive distributed and undistributed earnings. Holders of the Company's Series A, B and C preferred stock are entitled, on a pari passu basis, to receive dividends when, as and if declared by the board of directors, prior and in preference to any declaration or payment of any dividend on the common stock or junior convertible preferred stock until such time as the total dividends paid on each share of Series A, B and C preferred stock is equal to the original issue price of the shares. Holders of junior convertible preferred stock are entitled to receive a pro rata share of any dividend declared, based on the number of shares of common and preferred stock outstanding. As a result, all series of the Company's preferred stock are considered participating securities for the period of time that such securities are outstanding.
	Under the two-class method, for periods with net income, basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. Net income attributable to common stockholders is computed by subtracting from net income the portion of current year earnings that the participating securities would have been entitled to receive pursuant to their dividend rights had all of the year's earnings been distributed. No such adjustment to earnings is made during periods with a net loss, as the holders of the participating securities have no obligation to fund losses. Diluted net income per common share is computed under the two-class method by using the weighted-average number of shares of common stock outstanding plus, for periods with net income attributable to common stockholders, the potential dilutive effects of stock options and warrants. In addition, the Company analyzes the potential dilutive effect of the outstanding participating securities under the if-converted method when calculating diluted earnings per share, in which it is assumed that the outstanding participating securities convert into common stock at the beginning of the period. The Company reports the more dilutive of the approaches as its diluted net income per share during the period.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606), or ASU 2014-09, which amends the existing accounting standards for revenue recognition. ASU 2014-09 is based on principles that govern the recognition of revenue at an amount an entity expects to be entitled to when products are transferred to customers. ASU 2014-09 will be effective for the Company beginning in its first quarter of 2017. Early adoption is not permitted. The new revenue standard may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. The Company is currently evaluating the impact of adopting the new revenue standard on its consolidated financial statements.
	In April 2015, the Financial Accounting Standards Board issued Accounting Standards Update No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), or ASU 2015-03, which seeks to simplify the presentation of debt issuance costs. ASU 2015-03 will require that debt issuance costs be classified as a contra-liability against any outstanding borrowings related to such debt issuance costs, rather than as a separate asset. ASU 2015-03 will be effective for the Company beginning in its first quarter of 2016. Early adoption is permitted. The Company is currently evaluating the impact of adopting ASU 2015-03 on its consolidated financial statements.
Subsequent Events	Subsequent Events
	The Company has evaluated subsequent events through May 8, 2015, the date of filing of this Form 10-Q.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Schedule of Useful Lives of Property and Equipment	The estimated useful lives of property and equipment are as follows:
	Computer hardware and equipment	3 - 5 years
	Purchased software and licenses	3 - 5 years
	Furniture and fixtures	7 years
	Leasehold improvements	Lesser of estimated useful life or lease term
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the computations of loss per share for the periods listed:
		Three months ended March 31,
		2015				2014
	Numerators:
	Net loss attributable to common stockholders	$	(4,645	)		$	(5,566	)
	Denominator:
	Weighted-average common shares outstanding, basic and diluted	35,633				14,107
	Net loss per common share, basic and diluted	$	(0.13	)		$	(0.39	)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following table sets forth the anti-dilutive common share equivalents for the periods listed:
		Three months ended March 31,
		2015			2014
	Redeemable convertible preferred stock:
	Series A preferred stock	—			7,293
	Series B preferred stock	—			1,677
	Series C preferred stock	—			2,402
	Junior preferred stock	—			1,154
	Stock options and restricted stock units	5,927			6,278
	Total anti-dilutive common share equivalents	5,927			18,804

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table details the fair value hierarchy of the Company's financial assets measured at fair value on a recurring basis as of March 31, 2015:
				Fair Value Measurements Using:
	Cash Equivalents:	Fair Value		Quoted Prices		Significant Other		Significant
				in Active		Observable Inputs		Unobservable
				Markets for		(Level 2)		Inputs
				Identical Assets				(Level 3)
				(Level 1)
	Money market funds	$	14,059	$	14,059	$	—	$	—
	Certificates of deposits	735		—		735		—
		$	14,794	$	14,059	$	735	$	—
	Investments:	Fair Value		Quoted Prices		Significant Other		Significant
				in Active		Observable Inputs		Unobservable
				Markets for		(Level 2)		Inputs
				Identical Assets				(Level 3)
				(Level 1)
	U.S. treasuries and agency bonds	$	10,553	$	—	$	10,553	$	—
	Corporate bonds and commercial paper	8,316		—		8,316		—
	Certificates of deposit	6,656		—		6,656		—
		$	25,525	$	—	$	25,525	$	—
	The following table details the fair value hierarchy of the Company's financial assets measured at fair value on a recurring basis as of December 31, 2014:
				Fair Value Measurements Using:
	Cash Equivalents:	Fair Value		Quoted Prices		Significant Other		Significant
				in Active		Observable Inputs		Unobservable
				Markets for		(Level 2)		Inputs
				Identical Assets				(Level 3)
				(Level 1)
	Money market funds	$	17,865	$	17,865	$	—	$	—
	Certificates of deposits	1,456		—		1,456		—
		$	19,321	$	17,865	$	1,456	$	—
	Investments:	Fair Value		Quoted Prices		Significant Other		Significant
				in Active		Observable Inputs		Unobservable
				Markets for		(Level 2)		Inputs
				Identical Assets				(Level 3)
				(Level 1)
	U.S. treasuries and agency bonds	$	7,502	$	—	$	7,502	$	—
	Corporate bonds and commercial paper	6,192		—		6,192		—
	Certificates of deposit	7,262		—		7,262		—
		$	20,956	$	—	$	20,956	$	—

Cash_Cash_Equivalents_and_Inve1

Cash, Cash Equivalents and Investments (Tables)	3 Months Ended
	Mar. 31, 2015
Cash and Cash Equivalents [Abstract]
Summary of Cash, Cash Equivalents and Investments	A summary of the Company's cash equivalents and investments as of March 31, 2015 is as follows:
	Cash Equivalents:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Money market funds	$	14,059	$	—		$	—		$	14,059
	Certificates of deposits	735		—			—			735
		$	14,794	$	—		$	—		$	14,794
	Investments:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	U.S. government agency bonds	$	10,553	$	—		$	—		$	10,553
	Corporate bonds and commercial paper	8,320		—			(4		)	8,316
	Certificates of deposits	6,656		—			—			6,656
		$	25,529	$	—		$	(4	)	$	25,525
	A summary of the Company's cash equivalents and investments as of December 31, 2014 is as follows:
	Cash Equivalents:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Money market funds	$	17,865	$	—		$	—		$	17,865
	Certificates of deposits	1,456		—			—			1,456
		$	19,321	$	—		$	—		$	19,321
	Investments:	Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	U.S. government agency bonds	$	7,508	$	—		$	(6	)	$	7,502
	Corporate bonds and commercial paper	6,200		—			(8		)	6,192
	Certificates of deposits	7,262		—			—			7,262
		$	20,970	$	—		$	(14	)	$	20,956
Investments Classified by Contractual Maturity Date	The following table summarizes the estimated fair value of the Company's investments, designated as available-for-sale and classified by the contractual maturity date of the investments as of the dates shown:
		31-Mar-15		December 31, 2014
	Due within one year or less	$	12,749	$	9,095
	Due after one year through five years	12,776		11,861
	Total	$	25,525	$	20,956
Schedule of Fair Values and Gross Unrealized Losses for Available-for-sale Securities	The following table shows the fair values and the gross unrealized losses of these available-for-sale investments aggregated by investment category as of March 31, 2015:
		Fair Value		Gross Unrealized Loss
	U.S. government agency bonds	$	10,553	$	—
	Corporate bonds and commercial paper	8,320		(4		)
	Total	$	18,873	$	(4	)
	The following table shows the fair values and the gross unrealized losses of these available-for-sale investments aggregated by investment category as of December 31, 2014:
		Fair Value		Gross Unrealized Loss
	U.S. government agency bonds	$	7,508	$	(6	)
	Corporate bonds and commercial paper	6,200		(8		)
	Total	$	13,708	$	(14	)

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Schedule of Conversions of Stock	The following table presents the conversion of all classes of stock on March 25, 2014:
		Prior to Conversion	Subsequent to Conversion
	Convertible preferred stock
	Series A	7,908	—
	Series B	1,818	—
	Series C	2,605	—
	Redeemable common stock	3,829	—
	Junior preferred stock	1,251	—
	Undesignated common stock	—	17,412

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award Assumptions for Estimating Fair Value of Stock Option Grants	The following summarizes the assumptions used for estimating the fair value of stock options granted during the periods indicated:
		Three Months Ended March 31,
		2015		2014
	Risk-free interest rate	1.50%		1.2 - 2.1%
	Expected life (in years)	4.8		3.8 - 6.8
	Expected volatility	46.1 - 46.9%		45.1 - 45.2%
	Dividend yield	—		—
	Weighted-average grant date fair value per share	$8.25		$5.39
Schedule of Share-based Compensation, Stock Options, Activity	Stock option activity during the three months ended March 31, 2015 was as follows:
		Number of			Weighted
		Options			Average
					Exercise Price
	Balance as of January 1, 2015	6,111			$	5.9
	Granted	375			20.25
	Exercised	(735	)		1.71
	Forfeited	(49	)		8.58
	Balance as of March 31, 2015	5,702			$	7.36
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The summary of stock options outstanding as of March 31, 2015 is as follows:
		Options Outstanding						Options Exercisable
	Range of Exercise Prices	Number of			Weighted		Weighted	Number of	Weighted		Weighted
		Options			Average		Average	Options	Average		Average
					Exercise		Remaining		Exercise		Remaining
					Price		Contractual Life		Price		Contractual Life
							(in years)				(in years)
	$0.29 - $0.35	561			$	0.33	2.9	561	$	0.33	2.9
	$0.54 - $0.84	358			0.71		4.7	358	0.71		4.7
	$1.74 - $3.10	952			2.86		6.3	788	2.81		6.2
	$4.00 - $7.82	1,198			6.98		5.4	542	6.67		5.4
	$8.35	1,692			8.35		5.8	91	8.35		5.8
	$13.00 - $21.37	941			17.34		6.6	27	13		6
		5,702			$	7.36	5.6	2,367	$	3.12	5
Schedule of Nonvested Restricted Stock Units Activity	The summary of restricted stock unit activity is as follows:
		Number of			Weighted
		Shares			Average
					Grant Date Fair Value
	Nonvested as of January 1, 2015	28			$	19.44
	Granted	198			20.43
	Vested	—			—
	Forfeited	(1	)		20.91
	Nonvested as of March 31, 2015	225			$	20.3

Organization_and_Description_o1

Organization and Description of Business (Details)	Mar. 31, 2015	Feb. 28, 2013
Q2 Software, Inc. [Member]
Organization [Line Items]
Wholly owned subsidiary, ownership percentage	100.00%
cbanc Network, Inc. [Member]
Organization [Line Items]
Wholly owned subsidiary, ownership percentage, prior to reorganization		100.00%

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Accounts Receivable, Net [Abstract]
Unbilled receivables	$2,900,000				$2,300,000
Allowance for Sales Credits	-200,000				-200,000
Deferred commissions	7,500,000				7,000,000
Property and Equipment [Abstract]
Revenues recorded from out-of-pocket expense reimbursements	200,000		100,000
Research and development	4,151,000	[1]	2,736,000	[1]
Capitalized implementation costs	900,000		800,000
Advertising costs (less than $0.1 million for the three months ended March 31, 2015)	100,000		100,000
Numerators: [Abstract]
Net loss attributable to common stockholders	-4,645,000		-5,566,000
Denominator: [Abstract]
Weighted-average common shares outstanding, basic and diluted (shares)	35,633		14,107
Net loss per common share, basic and diluted (dollars per share)	($0.13)		($0.39)
Antidilutive securities excluded from computation of loss per share (shares)	5,927		18,804
Computer hardware and equipment [Member] | Minimum [Member]
Property and Equipment [Abstract]
Estimated useful life	3 years
Computer hardware and equipment [Member] | Maximum [Member]
Property and Equipment [Abstract]
Estimated useful life	5 years
Purchased software and licenses [Member] | Minimum [Member]
Property and Equipment [Abstract]
Estimated useful life	3 years
Purchased software and licenses [Member] | Maximum [Member]
Property and Equipment [Abstract]
Estimated useful life	5 years
Furniture and fixtures [Member]
Property and Equipment [Abstract]
Estimated useful life	7 years
Cost of revenues [Member]
Property and Equipment [Abstract]
Research and development	$300,000		$400,000
Series A Preferred Stock [Member]
Denominator: [Abstract]
Antidilutive securities excluded from computation of loss per share (shares)	0		7,293
Series B Preferred Stock [Member]
Denominator: [Abstract]
Antidilutive securities excluded from computation of loss per share (shares)	0		1,677
Series C Preferred Stock [Member]
Denominator: [Abstract]
Antidilutive securities excluded from computation of loss per share (shares)	0		2,402
Junior Preferred Stock [Member]
Denominator: [Abstract]
Antidilutive securities excluded from computation of loss per share (shares)	0		1,154
Stock Options and Restricted Stock Units [Member]
Denominator: [Abstract]
Antidilutive securities excluded from computation of loss per share (shares)	5,927		6,278
Stock options [Member]
Stock-Based Compensation [Abstract]
Period of monthly vesting of options after first anniversary of grant date	36 months
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration of Credit Risk [Abstract]
Number of customers exceeding 10% of accounts receivable	1				0
Percentage of accounts receivable (percent)	17.00%
Vesting on one-year anniversary of grant [Member] | Stock options [Member]
Stock-Based Compensation [Abstract]
Option vesting percentage (percent)	25.00%
Annual vesting percentage [Member] | Restricted Stock Units (RSUs) [Member]
Stock-Based Compensation [Abstract]
Option vesting percentage (percent)	25.00%
[1]	Includes stock-based compensation as follows for the three months ended March 31, 2015 and 2014, respectively, Cost of Revenues of $178 and $126, respectively; Sales and Marketing of $292 and $167, respectively; Research and development of $162 and $107, respectively; General and administrative of $690 and $518, respectively; Total stock-based compensation of $1,322 and $918, respectively.

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$14,794	$19,321
Investments	25,525	20,956
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	14,059	17,865
Investments	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	735	1,456
Investments	25,525	20,956
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	0
Investments	0	0
US treasuries and agency bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	10,553	7,502
US treasuries and agency bonds [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
US treasuries and agency bonds [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	10,553	7,502
US treasuries and agency bonds [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Corporate bonds and commercial paper [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	8,316	6,192
Corporate bonds and commercial paper [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Corporate bonds and commercial paper [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	8,316	6,192
Corporate bonds and commercial paper [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	6,656	7,262
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	6,656	7,262
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	14,059	17,865
Money market funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	14,059	17,865
Money market funds [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	14,059	17,865
Money market funds [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	0
Money market funds [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	0
Certificates of deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	735	1,456
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	735	1,456
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	0
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	735	1,456
Certificates of deposits [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$0	$0

Cash_Cash_Equivalents_and_Inve2

Cash, Cash Equivalents and Investments (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, Amortized Cost	$94,170	$67,979	$86,673	$18,675
Investments, Amortized Cost	25,529	20,970
Investments, Unrealized Gains	0	0
Investments, Unrealized Losses	-4	-14
Investments, Fair Value	25,525	20,956
Cash [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, Amortized Cost	79,400	48,700
Cash Equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, Amortized Cost	14,794	19,321
Cash and Cash Equivalents, Fair Value	14,794	19,321
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, Amortized Cost	14,059	17,865
Cash and Cash Equivalents, Fair Value	14,059	17,865
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Cash and Cash Equivalents, Amortized Cost	735	1,456
Cash and Cash Equivalents, Fair Value	735	1,456
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Amortized Cost	6,656	7,262
Investments, Unrealized Gains	0	0
Investments, Unrealized Losses	0	0
Investments, Fair Value	6,656	7,262
US government agency bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Amortized Cost	10,553	7,508
Investments, Unrealized Gains	0	0
Investments, Unrealized Losses	0	-6
Investments, Fair Value	10,553	7,502
Corporate bonds and commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Amortized Cost	8,320	6,200
Investments, Unrealized Gains	0	0
Investments, Unrealized Losses	-4	-8
Investments, Fair Value	$8,316	$6,192

Cash_Cash_Equivalents_and_Inve3

Cash, Cash Equivalents and Investments - Contractual Maturities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Cash and Cash Equivalents [Abstract]
Due within one year or less	$12,749	$9,095
Due after one year through five years	12,776	11,861
Total	$25,525	$20,956

Cash_Cash_Equivalents_and_Inve4

Cash, Cash Equivalents and Investments - Securities in Continuous Loss Position (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$18,873	$13,708
Gross Unrealized Loss	-4	-14
US government agency bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	10,553	7,508
Gross Unrealized Loss	0	-6
Corporate bonds and commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	8,320	6,200
Gross Unrealized Loss	($4)	($8)

Debt_Details

Debt (Details) (2013 Secured Credit Facility [Member], Wells Fargo [Member], USD $)	0 Months Ended
	Aug. 11, 2014	Mar. 31, 2015	Apr. 30, 2013	Oct. 31, 2016
			annual_installment
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$25,000,000
Line of credit facility, maximum borrowing capacity as a percentage of the Company's trailing twelve-month recurring revenues	75.00%
Line of credit facility, increase to borrowing capacity	25,000,000
Line of credit facility, initial closing fee, number of annual installments			3
Borrowings under line of credit		0
Available balance on line of credit facility		22,000,000
Fixed interest rate		3.18%
Line of Credit [Member] | U.S. Federal Funds Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable interest rate	1.00%
Line of Credit [Member] | One Month LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on variable interest rate	1.00%
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Secured letters of credit amount		3,000,000
Scenario, Forecast [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$25,000,000

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Monthly rent expense under operating lease	$0.30	$0.30

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)	0 Months Ended	3 Months Ended		0 Months Ended
	Mar. 25, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 04, 2015	Apr. 02, 2014
Class of Stock [Line Items]
Proceeds from the initial public offering of common stock, net of issuance costs	$72,600,000	$32,811,000	$73,615,000
Convertible stock, shares issued upon conversion	1
Series A Preferred Stock [Member]
Conversion of Common and Preferred Stock [Abstract]
Conversion of stock, shares converted	7,908,000
Series B Preferred Stock [Member]
Conversion of Common and Preferred Stock [Abstract]
Conversion of stock, shares converted	1,818,000
Series C Preferred Stock [Member]
Conversion of Common and Preferred Stock [Abstract]
Conversion of stock, shares converted	2,605,000
Common Stock [Member]
Class of Stock [Line Items]
Share issued in public offering (shares)	7,761,000			5,122,000	1,164,000
Share price (per share)	$13			$19.75
Shares sold by selling shareholders (shares)	1,511,000			4,133,000
Proceeds from the initial public offering of common stock, net of issuance costs					13,700,000
Proceeds from follow-on offering, net of issuance costs				$32,300,000
Conversion of Common and Preferred Stock [Abstract]
Conversion of stock, shares converted	3,829,000
Undesignated common stock, subsequent to conversion	17,412,000
Junior Preferred Stock [Member]
Conversion of Common and Preferred Stock [Abstract]
Conversion of stock, shares converted	1,251,000
Over-Allotment Option [Member] | Common Stock [Member]
Class of Stock [Line Items]
Share issued in public offering (shares)				768,000
Share price (per share)				$19.75

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	3 Months Ended		0 Months Ended	1 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Jan. 01, 2015	Mar. 31, 2014	Feb. 28, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	375,000
Aggregate intrinsic value of options exercised in period (less than $0.1 million for the three months ended September 30, 2013)	$13.30	$7.50
Total fair market value of stock options vested during the period	1.1	0.4
Unrecognized stock-based compensation expense, related to stock options	$14.80
2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial reserve of shares under the plan		1,850,000		1,850,000
Additional shares authorized under the plan, percentage increase				4.50%
Shares reserved for future issuance		1,957,000		1,957,000
Automatic annual increase in shares			1,561,000
Shares transferred from the previous plan that expired or terminated	13,000		93,000
Shares available for future issuance under the plan	2,445,000		3,611,000
Granted	953,000
2007 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares transferred to new plan				107,000
Shares reserved for future issuance	9,128,000
Shares available for future issuance under the plan	0
Additional shares authorized under the plan					1,400,000
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation, related to stock options, period for recognition	3 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	198,000
Unrecognized stock-based compensation, related to stock options, period for recognition	3 years 11 months
Restricted Stock [Member] | 2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	226,000

StockBased_Compensation_Assump

Stock-Based Compensation Assumptions Used in Estimating Fair Value of Options Granted (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum		1.20%
Risk-free interest rate, maximum		2.10%
Risk-free interest rate	1.50%
Expected life (years)	4 years 9 months 18 days
Expected volatility, minimum	46.10%	45.10%
Expected volatility, maximum	46.90%	45.20%
Dividend yield	0.00%	0.00%
Weighted-average grant date fair value per share (dollars per share)	$8.25	$5.39
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)		3 years 9 months 18 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)		6 years 9 months 18 days

StockBased_Compensation_Stock_

Stock-Based Compensation Stock Option Activity (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015
Stock Option Activity (shares)
Balance as of January 1, 2015	6,111
Granted	375
Exercised	-735
Exercised	-49
Balance as of March 31, 2015	5,702
Stock Option Activity (Weighted Average Exercise Price)
Balance as of January 1, 2015	$5.90
Granted	$20.25
Exercised	$1.71
Forfeited	$8.58
Balance as of March 31, 2015	$7.36

StockBased_Compensation_Stock_1

Stock-Based Compensation Stock Options by Range of Exercise Prices (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding (shares)	5,702
Options outstanding (weighted average exercise price per share)	$7.36
Options outstanding (weighted average remaining contractual life in years)	5 years 7 months 6 days
Options exercisable (shares)	2,367
Options exercisable (weighted average exercise price per share)	$3.12
Options exercisable (weighted average remaining contractual life in years)	5 years
$0.29 - $0.35 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$0.29
Exercise price range, upper range limit	$0.35
Options outstanding (shares)	561
Options outstanding (weighted average exercise price per share)	$0.33
Options outstanding (weighted average remaining contractual life in years)	2 years 10 months 24 days
Options exercisable (shares)	561
Options exercisable (weighted average exercise price per share)	$0.33
Options exercisable (weighted average remaining contractual life in years)	2 years 10 months 24 days
$0.54 - $0.84 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$0.54
Exercise price range, upper range limit	$0.84
Options outstanding (shares)	358
Options outstanding (weighted average exercise price per share)	$0.71
Options outstanding (weighted average remaining contractual life in years)	4 years 8 months 12 days
Options exercisable (shares)	358
Options exercisable (weighted average exercise price per share)	$0.71
Options exercisable (weighted average remaining contractual life in years)	4 years 8 months 12 days
$1.74 - $3.10 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$1.74
Exercise price range, upper range limit	$3.10
Options outstanding (shares)	952
Options outstanding (weighted average exercise price per share)	$2.86
Options outstanding (weighted average remaining contractual life in years)	6 years 3 months 18 days
Options exercisable (shares)	788
Options exercisable (weighted average exercise price per share)	$2.81
Options exercisable (weighted average remaining contractual life in years)	6 years 2 months 12 days
$4.00 - $7.82 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$4
Exercise price range, upper range limit	$7.82
Options outstanding (shares)	1,198
Options outstanding (weighted average exercise price per share)	$6.98
Options outstanding (weighted average remaining contractual life in years)	5 years 4 months 24 days
Options exercisable (shares)	542
Options exercisable (weighted average exercise price per share)	$6.67
Options exercisable (weighted average remaining contractual life in years)	5 years 4 months 24 days
$8.35 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$8.35
Exercise price range, upper range limit	$8.35
Options outstanding (shares)	1,692
Options outstanding (weighted average exercise price per share)	$8.35
Options outstanding (weighted average remaining contractual life in years)	5 years 9 months 18 days
Options exercisable (shares)	91
Options exercisable (weighted average exercise price per share)	$8.35
Options exercisable (weighted average remaining contractual life in years)	5 years 9 months 18 days
$13.00 - $21.37 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit	$13
Exercise price range, upper range limit	$15.50
Options outstanding (shares)	941
Options outstanding (weighted average exercise price per share)	$17.34
Options outstanding (weighted average remaining contractual life in years)	6 years 7 months 6 days
Options exercisable (shares)	27
Options exercisable (weighted average exercise price per share)	$13
Options exercisable (weighted average remaining contractual life in years)	6 years

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock Activity (Details) (Restricted Stock [Member], USD $)	3 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 31, 2015
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Restricted Stock Unit Activity (shares)
Nonvested as of January 1, 2015	28
Granted	198
Vested	0
Forfeited	-1
Nonvested as of March 31, 2015	225
Restricted Stock Unit Activity, Weighted Average Grant Date Fair Value (dollars per share)
Nonvested as of January 1, 2015	$19.44
Granted	$20.43
Vested	$0
Forfeited	$20.91
Nonvested as of March 31, 2015	$20.30
Compensation not yet recognized	$4.40
Compensation not yet recognized, period for recognition	3 years 11 months

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Effective tax rate, percent	0.70%	0.30%
Unrecognized tax benefits	$0

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	0 Months Ended
In Thousands, unless otherwise specified	1-May-15	Jul. 18, 2014	Jan. 01, 2017	Jul. 01, 2016	1-May-16	Oct. 01, 2015
		sqft	sqft	sqft	sqft	sqft
Subsequent Event [Line Items]
Lease Agreement, Square Footage		70,000
First Amendment to Lease Agreement [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Operating lease renewal term	10 years
Operating lease, initial monthly rent	$98
Operating lease, final monthly rent	$311
Scenario, Forecast [Member] | First Amendment to Lease Agreement [Member]
Subsequent Event [Line Items]
Lease Agreement, Additional Square Footage			25,000		34,000
Lease Agreement, Phased Commencement, Square Footage				15,000		55,000