Opower 10-Q 14 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
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	OPWR
Entity Registrant Name	OPOWER, INC.
Entity Central Index Key	1412043
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		51,012,044

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$127,395	$125,725
Accounts receivable, net of allowance for doubtful accounts of $0 as of December 31, 2014 and March 31, 2015	18,614	36,295
Prepaid expenses and other current assets	5,526	4,654
Total current assets	151,535	166,674
Property and equipment, net	18,402	17,672
Other assets	239	151
Total assets	170,176	184,497
Current liabilities:
Accounts payable	1,958	1,400
Accrued expenses	5,761	6,367
Deferred revenue	56,725	61,989
Accrued compensation and benefits	6,626	8,337
Other current liabilities	1,781	2,091
Total current liabilities	72,851	80,184
Deferred revenue	1,422	2,280
Other liabilities	906	1,232
Total liabilities	75,179	83,696
Commitments and contingencies (see Note 5)
Stockholders' equity:
Preferred stock, par value $0.000005 per share - 25,000 shares authorized; none issued and outstanding as of December 31, 2014 and March 31, 2015
Common stock, par value $0.000005 per share - 500,000 shares authorized; 50,372 and 50,939 shares issued and outstanding as of December 31, 2014 and March 31, 2015, respectively	0	0
Additional paid-in capital	231,319	226,093
Accumulated deficit	-135,970	-124,994
Accumulated other comprehensive loss	-352	-298
Total stockholders' equity	94,997	100,801
Total liabilities and stockholders' equity	$170,176	$184,497

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$0	$0
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	50,939,000	50,372,000
Common stock, shares outstanding	50,939,000	50,372,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenue:
Subscription	$30,386	$26,191
Services	3,035	2,382
Total revenue	33,421	28,573
Cost of revenue:
Subscription	8,430	6,836
Services	3,584	3,099
Total cost of revenue	12,014	9,935
Gross profit	21,407	18,638
Operating expenses:
Sales and marketing	14,501	11,999
Research and development	12,213	10,754
General and administrative	4,575	3,218
Total operating expenses	31,289	25,971
Operating loss	-9,882	-7,333
Other income (expense):
Gain (loss) on foreign currency	-1,032	295
Interest expense	-1	-66
Other, net	-4	168
Loss before income taxes	-10,919	-6,936
Provision for income taxes	55	44
Net loss	($10,974)	($6,980)
Weighted-average common stock outstanding:
Basic and diluted	50,523	22,002
Net loss per share:
Basic and diluted	($0.22)	($0.32)

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net loss	($10,974)	($6,980)
Other comprehensive loss
Foreign currency translation	-60	-167
Unrealized gain (loss) on hedge transactions, net	6	21
Total other comprehensive loss	-54	-146
Total comprehensive loss	($11,028)	($7,126)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating Activities
Net loss	($10,974)	($6,980)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	2,520	1,347
Stock-based compensation expense	5,004	1,662
Other	1,036	97
Changes in operating assets and liabilities:
Accounts receivable	17,437	-3,067
Prepaid expenses and other current assets	-882	-883
Other assets	-87	-166
Accounts payable	585	-96
Accrued expenses	-1,177	506
Accrued compensation and benefits	-1,686	375
Deferred revenue	-6,124	5,298
Other liabilities	-376	-226
Net cash provided by (used in) operating activities	5,276	-2,133
Investing Activities
Additions to property and equipment	-2,366	-2,038
Net cash used in investing activities	-2,366	-2,038
Financing Activities
Proceeds from issuance of common stock	835	1,251
Taxes paid related to net share settlement of equity awards	-1,135
Payment of offering costs		-296
Principal payments on capital lease obligations	-110	-84
Net cash provided by (used in) financing activities	-410	871
Effect of exchange rate changes on cash and cash equivalents	-830	-36
Net increase (decrease) in cash and cash equivalents	1,670	-3,336
Cash and cash equivalents, beginning of period	125,725	28,819
Cash and cash equivalents, end of period	127,395	25,483
Supplemental cash flow information
Cash paid for income taxes, net of tax refunds	254	2
Cash paid for interest	6	5
Supplemental disclosure of non-cash investing and financing activities
Accrued property and equipment purchases	570	40
Capitalized stock-based compensation	321	24
Vesting of common stock subject to repurchase	101	274
Accrued deferred offering costs		$434

Company_Overview

Company Overview	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Company Overview	1. Company Overview
	Opower, Inc. (“Opower” or “the Company”) is a cloud-based software provider to the utility industry. Utilities use the Company’s software platform to deliver key customer-facing applications that reduce energy demand and improve customer perception of the utility. The Company’s software analyzes energy data and presents personalized insights to consumers in order to motivate reductions in energy consumption.
	In April 2014, the Company closed its initial public offering of its common stock (the “IPO”) whereby 7,015,000 shares of common stock were sold to the public, including 915,000 shares sold pursuant to the underwriters’ option to purchase additional shares, at a price of $19.00 per share. The Company’s shares are traded on the New York Stock Exchange under the symbol “OPWR”. The Company received aggregate proceeds of $121.8 million from the IPO, net of underwriters’ discounts and commissions and offering expenses of $2.1 million.

Summary_of_Significant_Account

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of Opower and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. For the condensed consolidated statements of operations for the three months ended March 31, 2014, to conform to the current year’s presentation, we separated revenue into subscription revenue and services revenue and cost of revenue into cost of revenue — subscription and cost of revenue — services. This change had no impact on total revenue or total cost of revenue.

These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial reporting and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2014, filed with the SEC on March 13, 2015. There have been no changes to the Company’s significant accounting policies described in the Form 10-K that have had a material impact on our condensed consolidated financial statements and related notes.

In the opinion of our management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of the Company’s results of operations, financial position and cash flows have been included. The results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. The year-end condensed balance sheet data was derived from the audited financial statements, but does not include all disclosures required by GAAP.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in these consolidated financial statements and accompanying notes. Significant items subject to such estimates include revenue recognition, the useful lives and recoverability of property and equipment, stock-based compensation and income taxes. Actual results could differ significantly from those estimates.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to significant concentration of credit risk consist primarily of cash, cash equivalents and accounts receivable. The Company maintains the majority of its cash and cash equivalents with one financial institution, which management believes to be financially sound and with minimal credit risk. The Company’s deposits periodically exceed amounts guaranteed by the Federal Deposit Insurance Corporation.

To manage accounts receivable risk, the Company monitors and evaluates the credit worthiness of its customers and maintains an allowance for doubtful accounts as deemed necessary. Collection efforts from long-established utilities have been historically successful, so the Company believes credit risk to be low.

The following table summarizes those customers who represented at least 10% of revenue or accounts receivable for the periods presented:

Revenue

Accounts Receivable

Three Months Ended

December 31,

March 31,

March 31,

2014

2015

2014

2015

Customer A

*

14

%

10

%

18

%

Customer B

11

%

*

*

13

%

Customer C

*

*

17

%

*

*

=xA0;Represented less than 10%

Fair Value Measurement

The Company applies fair value accounting for all financial assets and liabilities that are reported at fair value in the financial statements on a recurring basis. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a defined three-tier hierarchy to classify and disclose the fair value of assets and liabilities on both the date of their initial measurement as well as all subsequent periods. The hierarchy prioritizes the inputs used to measure fair value by the lowest level of input that is available and significant to the fair value measurement. The three levels are described as follows:

•

Level 1: Observable inputs. Quoted prices in active markets for identical assets and liabilities;

•

Level 2: Observable inputs other than the quoted price. Includes quoted prices for similar instruments, quoted prices for identical or similar instruments in inactive markets and amounts derived from valuation models where all significant inputs are observable in active markets; and

•

Level 3: Unobservable inputs. Includes amounts derived from valuation models where one or more significant inputs are unobservable and require the Company to develop relevant assumptions.

The Company evaluates its financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level of classification as of each reporting period.

Revenue Recognition

The Company derives its revenue from contractual agreements with utility providers based on subscriptions and services provided to those utilities, which include analyzing data provided by the utilities and using that data to encourage utility customers to reduce energy consumption and improve satisfaction. The Company generates substantially all of its revenue from subscriptions to its cloud-based data analytics platform and services to its customers.

Subscription fees primarily pay for the ongoing integration of utility data into our software platform and the analysis and presentation of this data to energy consumers. Revenue for subscription fees is recognized ratably over the contract term beginning on the date the service is available to the customer, which typically coincides with website launch or first reports delivered to households. Subscription contracts typically have a term of one to five years.

Service fees cover specific services performed for our utility customers, which may include program enablement services, research, program customizations and training, custom development on top of the Company’s software platform, as well as services provided by third party providers for which the Company is the principal in the arrangement with the customer. Setup fees, which tend not to provide stand-alone value, are deferred and recognized ratably over the expected customer relationship period, which is generally the greater of four years or the contract period. Services revenues are generally recognized over the term of the contract, or on a completed contract basis for deliverables that are determined to be separate units of accounting.

Cost of Revenue

Cost of revenue for subscriptions generally consists of information services necessary to perform data analysis, the costs of data center capacity, employee-related expenses, including salaries, benefits and stock-based compensation related to operating and servicing our internal applications, channel delivery fees, including printing and mailing for delivery of reports to utility customers, and amortization of internally capitalized software that delivers our services. In addition, we allocate a portion of overhead costs, including rent, information technology and employee benefit costs, to cost of revenue.

Cost of revenue for services primarily consists of personnel costs, including salaries, benefits and stock-based compensation, allocated overhead, and third-party costs.

Comprehensive Loss

Comprehensive loss consists of two components, net loss and other comprehensive income (loss). Other comprehensive income (loss) refers to gains and losses that are recorded as a separate element of stockholders’ equity (deficit) and are excluded from net loss. The Company’s other comprehensive income (loss) is comprised of foreign currency translation adjustments and unrealized gains or losses on hedge transactions.

Operating Segment

Operating segments are defined as components of a business that can earn revenue and incur expenses, and for which discrete financial information is available that is evaluated on a regular basis by the chief operating decision maker (“CODM”) to decide how to allocate resources and assess performance. The Company’s CODM, the Chief Executive Officer, reviews consolidated results of operations to make decisions, therefore the Company views its operations and manages its business as one operating segment.

Recently Issued Accounting Standards

In April 2015, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2015-03, Interest-Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs, which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The standard is effective for the Company on January 1, 2016, with early adoption permitted. The Company does not currently expect the adoption of this guidance to have a material impact on its consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard permits the use of either the retrospective or cumulative effect transition method. As issued, the new revenue recognition rules were to become effective January 1, 2017, with no early adoption permitted. In April 2015, the FASB proposed a deferral of the effective date to January 1, 2018, with early adoption permitted as of January 1, 2017. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	3. Fair Value Measurements
	The following table summarizes the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and March 31, 2015 (in thousands):
			December 31, 2014								March 31, 2015
			Fair Value		Level 1		Level 2		Level 3		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Cash equivalents(1):
	Money market funds(2)		$	108,274	$	108,274		—		—	$	114,887	$	114,887		—		—
	Total		$	108,274	$	108,274		—		—	$	114,887	$	114,887		—		—
	Liabilities:
	Foreign currency derivative contracts		$	2	$	—	$	2	$	—	$	—	$	—	$	—	$	—
	Total		$	2	$	—	$	2	$	—	$	—	$	—	$	—	$	—
	(1)	Included in cash and cash equivalents on the condensed consolidated balance sheets.
	(2)	Money market funds associated with the Company’s overnight investment sweep account.

Property_and_Equipment

Property and Equipment	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property and Equipment	4. Property and Equipment
	Property and equipment consisted of the following (in thousands):
		December 31,			March 31,
		2014			2015
	Equipment	$	7,748		$	8,272
	Software		19,574			22,216
	Furniture and fixtures		337			337
	Leasehold improvements		2,594			2,684
	Total property and equipment	$	30,253		$	33,509
	Accumulated depreciation and amortization		(12,581	)		(15,107	)
	Total property and equipment, net	$	17,672		$	18,402
	As of December 31, 2014 and March 31, 2015, the gross carrying amount of property and equipment includes computer equipment under capital leases with a cost basis of $1.7 million and $1.7 million, respectively. Accumulated depreciation related to this computer equipment was $0.7 million and $0.8 million as of December 31, 2014 and March 31, 2015, respectively. Interest expense for the three months ended March 31, 2014 and 2015 was immaterial. As of December 31, 2014 and March 31, 2015, the total capital lease obligation was $1.0 million and $0.9 million, respectively, and recorded on the consolidated balance sheets as a component of other current liabilities and other liabilities.
	Capitalized internal-use software costs are also included in property and equipment. During the three months ended March 31, 2014 and 2015, the Company capitalized $1.1 million and $2.4 million of these software development costs, respectively. The net book value of capitalized internal use software was $11.6 million and $12.2 million as of December 31, 2014 and March 31, 2015, respectively. Amortization expense related to capitalized internal-use software was $0.8 million and $1.8 million for the three months ended March 31, 2014 and 2015, respectively.
	The following table represents a detailed breakout of depreciation and amortization expense as recorded in the condensed consolidated statements of operations (in thousands):
		Three Months Ended
		March 31,
		2014			2015
	Subscription	$	509		$	1,095
	Services		38			60
	Sales and marketing		46			108
	Research and development		592			1,212
	General and administrative		162			45
	Total	$	1,347		$	2,520

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	5. Commitments and Contingencies
	Operating and Capital Leases
	The Company leases office space in the United States and other international locations. All leases are non-cancelable operating lease agreements that expire at various dates through 2018 and include renewal options.
	In June 2013, the Company entered into a master lease agreement with a financing company. The agreement allows for the Company to lease eligible equipment purchases. Each lease has a 36 month term, payable in equal monthly installments with the exception of the first and final payments which are prorated based on a midmonth convention. The Company has accounted for the leases under the master lease agreement as capital leases. The weighted-average interest rate implicit in the leases was 5.5%.
	A summary of lease commitments as of March 31, 2015 is as follows (in thousands):
	Year ending December 31,	Operating		Capital
		Leases		Leases
	2015 (April - December)	$	4,302	$	447
	2016		4,935		406
	2017		2,804		63
	2018		470		—
			12,511		916
	Less:
	Amounts representing interest		—		41
	Total lease obligations	$	12,511	$	875
	Rent expense under operating leases was $1.1 million and $1.2 million for the three months ended March 31, 2014 and 2015, respectively.
	Letters of Credit
	As of December 31, 2014 and March 31, 2015, the Company had outstanding letters of credit totaling $1.3 million in connection with securing its leased office space. The outstanding amounts for the Arlington, Virginia and San Francisco, California offices are $0.6 million and $0.7 million, respectively, and both letters of credit remain outstanding as of March 31, 2015.
	Contingencies and Indemnifications
	In the normal course of business, the Company enters into contracts and agreements that may contain representations and warranties and provide for general indemnifications. The Company’s exposure under these agreements is unknown because it involves claims that may be made in the future, but have not yet been made. The Company has not paid any claims or been required to defend any actions related to indemnification obligations. However, the Company could incur costs in the future as a result of indemnification obligations.
	In accordance with its bylaws, the Company has indemnification obligations to its officers, directors, employees and agents (other than directors and officers) for certain events or occurrences, subject to certain limits, while they are serving at the Company’s request in such capacity. There have been no claims, and the Company has a director and officer insurance policy that enables it to recover a portion of any future claims.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Stockholders' Equity	6. Stockholders’ Equity
	The Company had two classes of stock authorized as of December 31, 2014 and March 31, 2015, preferred stock and common stock.
	Undesignated Preferred Stock
	The Company is authorized to issue 25.0 million shares of preferred stock. As of December 31, 2014 and March 31, 2015, there were no preferred shares issued and outstanding.
	Common Stock
	The Company is authorized to issue 500.0 million shares of common stock. As of December 31, 2014 and March 31, 2015, there were 50.4 million and 50.9 million shares of common stock issued and outstanding, respectively. Common stock is issued from the pool of authorized stock upon the exercise of stock options or vesting of restricted stock.
	Accumulated Other Comprehensive Income (Loss)
	Other comprehensive loss is comprised of certain gains and losses that are excluded from net income under GAAP and instead recorded as a separate element of stockholders’ equity. The Company’s other comprehensive loss consists of foreign currency translation adjustments resulting from the translation of the Company’s foreign subsidiaries whose functional currency is their respective local currency, as well as any unrealized gains or losses on the Company’s unsettled foreign currency derivative contracts.
	The following table summarizes the activity for each component of accumulated other comprehensive loss (in thousands):
		Foreign			Foreign			Accumulated
		currency			currency			other
		translation			derivative			comprehensive
					instruments			loss
	Balance as of December 31, 2014	$	(242	)	$	(56	)	$	(298	)
	Other comprehensive income (loss) before reclassifications		(60	)		13			(47	)
	Reclassifications to net income		—			(7	)		(7	)
	Other comprehensive income (loss)		(60	)		6			(54	)
	Balance as of March 31, 2015	$	(302	)	$	(50	)	$	(352	)
	Gains and losses on cash flow hedges are recognized in the consolidated statements of operations in revenue.

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	7. Stock-Based Compensation
	Stock Option Activity
	A summary of stock option activity for the three months ended March 31, 2015 is summarized in the following table (in thousands, except time period and per share amounts):
			Options			Weighted-		Weighted-		Aggregate
			Outstanding			Average		Average		Intrinsic
						Exercise		Remaining		Value(1)
						Price		Contractual
								Term
								(Years)
	Balance at December 31, 2014			5,815		$	4.4		7.3	$	57,715
	Granted			—			—
	Exercised			(414	)		2.01
	Forfeited			(81	)		9.04
	Balance at March 31, 2015			5,320		$	4.52		7	$	32,022
	Vested and expected to vest after March 31, 2015			5,182		$	4.45		7	$	31,435
	Exercisable at March 31, 2015			3,997		$	4.79		6.8	$	25,054
	(1)	Aggregate intrinsic value represents the difference between the fair value of the underlying common stock and the exercise price of outstanding, in-the-money stock options.
	The 2007 Stock Plan allows for grants of immediately exercisable stock options. The Company has the right to purchase any unvested, but issued common shares at the original exercise price during the repurchase period following an employee’s termination. The consideration received for an exercise of an unvested option is considered to be a deposit of the exercise price. The related dollar amount is recorded as other current liabilities and other liabilities on the Company’s consolidated balance sheets and will be reclassified to equity as the Company’s repurchase right lapses. As of December 31, 2014 and March 31, 2015, unvested stock options subject to repurchase were 0.2 million and 0.1 million, respectively, at an aggregate exercise price of $0.4 million and $0.3 million, respectively.
	The following table summarizes additional information on stock option grants, vesting and exercises (in thousands):
			Three Months Ended
			March 31,
			2014			2015
	Total fair value of stock options granted		$	434		$	—
	Total fair value of shares vested			1,306			1,288
	Total intrinsic value of stock options exercised			9,003			4,242
	Cash received from stock options exercised			1,251			835
	Restricted Stock Unit Activity
	A summary of restricted stock unit (“RSU”) activity for the three months ended March 31, 2015 is summarized in the following table (in thousands, except time period and per share amounts):
			RSUs			Weighted-		Weighted-		Aggregate
			Outstanding			Average		Average		Intrinsic
						Grant		Remaining		Value
						Date Fair		Contractual
						Value		Term
								(Years)
	Balance at December 31, 2014			2,838		$	16.77		6.4	$	40,391
	Granted			812			15.14
	Released			(230	)		16.75
	Forfeited			(150	)		16.62
	Balance at March 31, 2015			3,270		$	16.37		6.4	$	33,136
	Vested and expected to vest after March 31, 2015			2,879		$	16.34		6.4	$	29,167
	Stock-Based Compensation Expense
	Stock-based compensation expense is included in the condensed consolidated statements of operations within the following line items (in thousands):
			Three Months Ended
			March 31,
			2014			2015
	Subscription		$	15		$	147
	Services			64			265
	Sales and marketing			749			1,888
	Research and development			297			1,658
	General and administrative			537			1,046
	Total		$	1,662		$	5,004
	A summary of our remaining unrecognized compensation expense, net of estimated forfeitures, and the weighted-average remaining amortization period at March 31, 2015 related to our non-vested stock options and RSU awards is presented below (in thousands, except time period amounts):
			As of March 31, 2015
			Unrecognized			Weighted-Average
			Expense			Amortization Period
						(Years)
	Restricted Stock Units		$	37,686			2.7
	Stock Options			11,730			2.5
			$	49,416

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	8. Income Taxes
	For the three months ended March 31, 2014 and 2015, the income tax provision for continuing operations is composed of state tax expense and foreign tax expense for the Company’s consolidated international subsidiaries.
	The Company has evaluated the positive and negative evidence bearing upon the ability of its deferred tax assets to be realized. Based on the Company’s limited operating history and cumulative operating losses to date, management believes that it is more likely than not that the Company’s domestic deferred tax assets would not be fully realized. Accordingly, the domestic deferred tax assets have been fully reserved at December 31, 2014 and March 31, 2015.
	To date, there have been no tax benefits recognized related to uncertain tax positions. The Company does not anticipate a material change in the unrecognized tax benefits in the next twelve months.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	9. Net Income (Loss) Per Share
	The Company computes net loss per share of common stock in conformity with the two-class method required for participating securities. Upon the closing of the IPO in April 2014, all shares of the Company’s outstanding convertible preferred stock automatically converted into shares of common stock. The Company considered all series of convertible preferred stock to be participating securities, as the holders of the preferred stock were entitled to receive a non-cumulative dividend on a pari-passu basis in the event that a dividend was paid on common stock. The Company also considers unvested restricted common stock and the shares issued upon the early exercise of stock options that are subject to repurchase to be participating securities, because holders of such shares have dividend rights in the event a dividend is paid on common stock. The holders of all series of convertible preferred stock, prior to their conversion upon the closing of the IPO, and the holders of common stock subject to repurchase do not have a contractual obligation to share in the losses of the Company. As such, the Company’s net losses for the three months ended March 31, 2014 were not allocated to these participating securities.
	The following table summarizes the calculation of the Company’s basic and diluted net loss per share under the two-class method attributable to common stockholders for the three months ended March 31, 2014 and 2015 (in thousands, except per share amounts):
		Three Months Ended
		March 31,
		2014			2015
	Numerator:
	Net loss	$	(6,980	)	$	(10,974	)
	Non-cumulative dividends to preferred stockholders		—			—
	Net loss attributable to common stockholders	$	(6,980	)	$	(10,974	)
	Denominator:
	Weighted-average common stock outstanding, basic		22,002			50,523
	Effect of potentially dilutive stock options and restricted stock units		—			—
	Weighted-average common stock outstanding, diluted		22,002			50,523
	Net loss per share, basic and diluted	$	(0.32	)	$	(0.22	)
	Anti-Dilutive Shares Excluded
	The following potential shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands):
		Three Months Ended
		March 31,
		2014			2015
	Convertible preferred stock		19,247			—
	Stock options		7,166			5,320
	Restricted stock units		1,552			3,270
	Common stock subject to repurchase		324			108
			28,289			8,698
	For periods prior to the IPO, the Company excluded the convertible preferred stock and convertible note payable from the calculation of diluted net loss per share attributable to common stockholders because the conversion was contingent on future events.

Geographic_Information

Geographic Information	3 Months Ended
	Mar. 31, 2015
Text Block [Abstract]
Geographic Information	10. Geographic Information
	Revenue generated for customers located in the United States was approximately 86% and 89% of revenue for the three months ended March 31, 2014 and 2015, respectively.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of Opower and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. For the condensed consolidated statements of operations for the three months ended March 31, 2014, to conform to the current year’s presentation, we separated revenue into subscription revenue and services revenue and cost of revenue into cost of revenue — subscription and cost of revenue — services. This change had no impact on total revenue or total cost of revenue.

These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial reporting and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2014, filed with the SEC on March 13, 2015. There have been no changes to the Company’s significant accounting policies described in the Form 10-K that have had a material impact on our condensed consolidated financial statements and related notes.

In the opinion of our management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of the Company’s results of operations, financial position and cash flows have been included. The results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. The year-end condensed balance sheet data was derived from the audited financial statements, but does not include all disclosures required by GAAP.

Use of Estimates

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in these consolidated financial statements and accompanying notes. Significant items subject to such estimates include revenue recognition, the useful lives and recoverability of property and equipment, stock-based compensation and income taxes. Actual results could differ significantly from those estimates.

Concentration of Credit Risk

Concentration of Credit Risk

Financial instruments that potentially subject the Company to significant concentration of credit risk consist primarily of cash, cash equivalents and accounts receivable. The Company maintains the majority of its cash and cash equivalents with one financial institution, which management believes to be financially sound and with minimal credit risk. The Company’s deposits periodically exceed amounts guaranteed by the Federal Deposit Insurance Corporation.

To manage accounts receivable risk, the Company monitors and evaluates the credit worthiness of its customers and maintains an allowance for doubtful accounts as deemed necessary. Collection efforts from long-established utilities have been historically successful, so the Company believes credit risk to be low.

The following table summarizes those customers who represented at least 10% of revenue or accounts receivable for the periods presented:

Revenue

Accounts Receivable

Three Months Ended

December 31,

March 31,

March 31,

2014

2015

2014

2015

Customer A

*

14

%

10

%

18

%

Customer B

11

%

*

*

13

%

Customer C

*

*

17

%

*

*

=xA0;Represented less than 10%

Fair Value Measurement

Fair Value Measurement

The Company applies fair value accounting for all financial assets and liabilities that are reported at fair value in the financial statements on a recurring basis. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The accounting guidance establishes a defined three-tier hierarchy to classify and disclose the fair value of assets and liabilities on both the date of their initial measurement as well as all subsequent periods. The hierarchy prioritizes the inputs used to measure fair value by the lowest level of input that is available and significant to the fair value measurement. The three levels are described as follows:

•

Level 1: Observable inputs. Quoted prices in active markets for identical assets and liabilities;

•

Level 2: Observable inputs other than the quoted price. Includes quoted prices for similar instruments, quoted prices for identical or similar instruments in inactive markets and amounts derived from valuation models where all significant inputs are observable in active markets; and

•

Level 3: Unobservable inputs. Includes amounts derived from valuation models where one or more significant inputs are unobservable and require the Company to develop relevant assumptions.

The Company evaluates its financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level of classification as of each reporting period.

Revenue Recognition

Revenue Recognition

The Company derives its revenue from contractual agreements with utility providers based on subscriptions and services provided to those utilities, which include analyzing data provided by the utilities and using that data to encourage utility customers to reduce energy consumption and improve satisfaction. The Company generates substantially all of its revenue from subscriptions to its cloud-based data analytics platform and services to its customers.

Subscription fees primarily pay for the ongoing integration of utility data into our software platform and the analysis and presentation of this data to energy consumers. Revenue for subscription fees is recognized ratably over the contract term beginning on the date the service is available to the customer, which typically coincides with website launch or first reports delivered to households. Subscription contracts typically have a term of one to five years.

Service fees cover specific services performed for our utility customers, which may include program enablement services, research, program customizations and training, custom development on top of the Company’s software platform, as well as services provided by third party providers for which the Company is the principal in the arrangement with the customer. Setup fees, which tend not to provide stand-alone value, are deferred and recognized ratably over the expected customer relationship period, which is generally the greater of four years or the contract period. Services revenues are generally recognized over the term of the contract, or on a completed contract basis for deliverables that are determined to be separate units of accounting.

Cost of Revenue

Cost of Revenue

Cost of revenue for subscriptions generally consists of information services necessary to perform data analysis, the costs of data center capacity, employee-related expenses, including salaries, benefits and stock-based compensation related to operating and servicing our internal applications, channel delivery fees, including printing and mailing for delivery of reports to utility customers, and amortization of internally capitalized software that delivers our services. In addition, we allocate a portion of overhead costs, including rent, information technology and employee benefit costs, to cost of revenue.

Cost of revenue for services primarily consists of personnel costs, including salaries, benefits and stock-based compensation, allocated overhead, and third-party costs.

Comprehensive Loss

Comprehensive Loss

Comprehensive loss consists of two components, net loss and other comprehensive income (loss). Other comprehensive income (loss) refers to gains and losses that are recorded as a separate element of stockholders’ equity (deficit) and are excluded from net loss. The Company’s other comprehensive income (loss) is comprised of foreign currency translation adjustments and unrealized gains or losses on hedge transactions.

Operating Segment

Operating Segment

Operating segments are defined as components of a business that can earn revenue and incur expenses, and for which discrete financial information is available that is evaluated on a regular basis by the chief operating decision maker (“CODM”) to decide how to allocate resources and assess performance. The Company’s CODM, the Chief Executive Officer, reviews consolidated results of operations to make decisions, therefore the Company views its operations and manages its business as one operating segment.

Recently Issued Accounting Standards

Recently Issued Accounting Standards

In April 2015, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2015-03, Interest-Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs, which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The standard is effective for the Company on January 1, 2016, with early adoption permitted. The Company does not currently expect the adoption of this guidance to have a material impact on its consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The standard permits the use of either the retrospective or cumulative effect transition method. As issued, the new revenue recognition rules were to become effective January 1, 2017, with no early adoption permitted. In April 2015, the FASB proposed a deferral of the effective date to January 1, 2018, with early adoption permitted as of January 1, 2017. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Revenue or Accounts Receivable Percentage of Major Customers	The following table summarizes those customers who represented at least 10% of revenue or accounts receivable for the periods presented:
			Revenue						Accounts Receivable
			Three Months Ended						December 31,			March 31,
			March 31,						2014			2015
			2014			2015
	Customer A			*			14	%		10	%		18	%
	Customer B			11	%		*			*			13	%
	Customer C			*			*			17	%		*
	*	=xA0;Represented less than 10%

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table summarizes the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and March 31, 2015 (in thousands):
			December 31, 2014								March 31, 2015
			Fair Value		Level 1		Level 2		Level 3		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Cash equivalents(1):
	Money market funds(2)		$	108,274	$	108,274		—		—	$	114,887	$	114,887		—		—
	Total		$	108,274	$	108,274		—		—	$	114,887	$	114,887		—		—
	Liabilities:
	Foreign currency derivative contracts		$	2	$	—	$	2	$	—	$	—	$	—	$	—	$	—
	Total		$	2	$	—	$	2	$	—	$	—	$	—	$	—	$	—
	(1)	Included in cash and cash equivalents on the condensed consolidated balance sheets.
	(2)	Money market funds associated with the Company’s overnight investment sweep account.

Property_and_Equipment_Tables

Property and Equipment (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment consisted of the following (in thousands):
		December 31,			March 31,
		2014			2015
	Equipment	$	7,748		$	8,272
	Software		19,574			22,216
	Furniture and fixtures		337			337
	Leasehold improvements		2,594			2,684
	Total property and equipment	$	30,253		$	33,509
	Accumulated depreciation and amortization		(12,581	)		(15,107	)
	Total property and equipment, net	$	17,672		$	18,402
Breakout of Depreciation and Amortization Expense	The following table represents a detailed breakout of depreciation and amortization expense as recorded in the condensed consolidated statements of operations (in thousands):
		Three Months Ended
		March 31,
		2014			2015
	Subscription	$	509		$	1,095
	Services		38			60
	Sales and marketing		46			108
	Research and development		592			1,212
	General and administrative		162			45
	Total	$	1,347		$	2,520

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Summary of Lease Commitments	A summary of lease commitments as of March 31, 2015 is as follows (in thousands):
	Year ending December 31,	Operating		Capital
		Leases		Leases
	2015 (April - December)	$	4,302	$	447
	2016		4,935		406
	2017		2,804		63
	2018		470		—
			12,511		916
	Less:
	Amounts representing interest		—		41
	Total lease obligations	$	12,511	$	875

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Summary of Accumulated Other Comprehensive Loss	The following table summarizes the activity for each component of accumulated other comprehensive loss (in thousands):
		Foreign			Foreign			Accumulated
		currency			currency			other
		translation			derivative			comprehensive
					instruments			loss
	Balance as of December 31, 2014	$	(242	)	$	(56	)	$	(298	)
	Other comprehensive income (loss) before reclassifications		(60	)		13			(47	)
	Reclassifications to net income		—			(7	)		(7	)
	Other comprehensive income (loss)		(60	)		6			(54	)
	Balance as of March 31, 2015	$	(302	)	$	(50	)	$	(352	)

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Activity	A summary of stock option activity for the three months ended March 31, 2015 is summarized in the following table (in thousands, except time period and per share amounts):
			Options			Weighted-		Weighted-		Aggregate
			Outstanding			Average		Average		Intrinsic
						Exercise		Remaining		Value(1)
						Price		Contractual
								Term
								(Years)
	Balance at December 31, 2014			5,815		$	4.4		7.3	$	57,715
	Granted			—			—
	Exercised			(414	)		2.01
	Forfeited			(81	)		9.04
	Balance at March 31, 2015			5,320		$	4.52		7	$	32,022
	Vested and expected to vest after March 31, 2015			5,182		$	4.45		7	$	31,435
	Exercisable at March 31, 2015			3,997		$	4.79		6.8	$	25,054
	(1)	Aggregate intrinsic value represents the difference between the fair value of the underlying common stock and the exercise price of outstanding, in-the-money stock options.
Summary of Additional Information on Stock Option Granted, Vested and Exercised	The following table summarizes additional information on stock option grants, vesting and exercises (in thousands):
			Three Months Ended
			March 31,
			2014			2015
	Total fair value of stock options granted		$	434		$	—
	Total fair value of shares vested			1,306			1,288
	Total intrinsic value of stock options exercised			9,003			4,242
	Cash received from stock options exercised			1,251			835
Summary of Restricted Stock Unit Activity	A summary of restricted stock unit (“RSU”) activity for the three months ended March 31, 2015 is summarized in the following table (in thousands, except time period and per share amounts):
			RSUs			Weighted-		Weighted-		Aggregate
			Outstanding			Average		Average		Intrinsic
						Grant		Remaining		Value
						Date Fair		Contractual
						Value		Term
								(Years)
	Balance at December 31, 2014			2,838		$	16.77		6.4	$	40,391
	Granted			812			15.14
	Released			(230	)		16.75
	Forfeited			(150	)		16.62
	Balance at March 31, 2015			3,270		$	16.37		6.4	$	33,136
	Vested and expected to vest after March 31, 2015			2,879		$	16.34		6.4	$	29,167
Stock-Based Compensation Expense	Stock-based compensation expense is included in the condensed consolidated statements of operations within the following line items (in thousands):
			Three Months Ended
			March 31,
			2014			2015
	Subscription		$	15		$	147
	Services			64			265
	Sales and marketing			749			1,888
	Research and development			297			1,658
	General and administrative			537			1,046
	Total		$	1,662		$	5,004
Summary of Unrecognized Compensation Expense, Net of Estimated Forfeitures and Weighted Average Remaining Amortization Period	A summary of our remaining unrecognized compensation expense, net of estimated forfeitures, and the weighted-average remaining amortization period at March 31, 2015 related to our non-vested stock options and RSU awards is presented below (in thousands, except time period amounts):
			As of March 31, 2015
			Unrecognized			Weighted-Average
			Expense			Amortization Period
						(Years)
	Restricted Stock Units		$	37,686			2.7
	Stock Options			11,730			2.5
			$	49,416

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Summary of Calculation of Company's Basic and Diluted Net Loss Per Share	The following table summarizes the calculation of the Company’s basic and diluted net loss per share under the two-class method attributable to common stockholders for the three months ended March 31, 2014 and 2015 (in thousands, except per share amounts):
		Three Months Ended
		March 31,
		2014			2015
	Numerator:
	Net loss	$	(6,980	)	$	(10,974	)
	Non-cumulative dividends to preferred stockholders		—			—
	Net loss attributable to common stockholders	$	(6,980	)	$	(10,974	)
	Denominator:
	Weighted-average common stock outstanding, basic		22,002			50,523
	Effect of potentially dilutive stock options and restricted stock units		—			—
	Weighted-average common stock outstanding, diluted		22,002			50,523
	Net loss per share, basic and diluted	$	(0.32	)	$	(0.22	)
Summary of Potential Shares Excluded from Calculation of Diluted Net Loss Per Share	The following potential shares were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands):
		Three Months Ended
		March 31,
		2014			2015
	Convertible preferred stock		19,247			—
	Stock options		7,166			5,320
	Restricted stock units		1,552			3,270
	Common stock subject to repurchase		324			108
			28,289			8,698

Company_Overview_Additional_In

Company Overview - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
	Apr. 30, 2014	Mar. 31, 2014	Mar. 31, 2015	Dec. 31, 2014
Subsidiary, Sale of Stock [Line Items]
Common stock, shares issued			50,939,000	50,372,000
Proceeds from issuance of common stock	$121,800,000
Payment for stock issuance cost		296,000
IPO [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock, shares issued	7,015,000
Common stock shares issued to underwriters	915,000
Share price per share under underwriter	$19
Payment for stock issuance cost	$2,100,000

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
	Segment
Schedule Of Significant Accounting Policies [Line Items]
Number of operating segment	1
Minimum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Subscription contracts term	1 year
Revenue recognition, customer relationship period	4 years
Maximum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Subscription contracts term	5 years
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Schedule Of Significant Accounting Policies [Line Items]
Threshold percentage represented by major customers	10.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Maximum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Threshold percentage represented by major customers	10.00%
Revenue [Member] | Customer Concentration Risk [Member]
Schedule Of Significant Accounting Policies [Line Items]
Threshold percentage represented by major customers	10.00%
Revenue [Member] | Customer Concentration Risk [Member] | Maximum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Threshold percentage represented by major customers	10.00%

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Summary of Revenue or Accounts Receivable Percentage of Major Customers (Detail) (Customer Concentration Risk [Member])	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	10.00%
Revenue [Member] | Customer A [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	14.00%
Revenue [Member] | Customer B [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage		11.00%
Accounts Receivable [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	10.00%
Accounts Receivable [Member] | Customer A [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	18.00%	10.00%
Accounts Receivable [Member] | Customer B [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	13.00%
Accounts Receivable [Member] | Customer C [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage		17.00%

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Summary of Revenue or Accounts Receivable Percentage of Major Customers (Parenthetical) (Detail) (Customer Concentration Risk [Member])	3 Months Ended
	Mar. 31, 2015
Revenue [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	10.00%
Accounts Receivable [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	10.00%
Maximum [Member] | Revenue [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	10.00%
Maximum [Member] | Accounts Receivable [Member]
Revenue or Accounts Receivable by Major Customers [Line Items]
Concentration percentage	10.00%

Fair_Value_Measurements_Summar

Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (Fair Value, Measurements, Recurring [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Cash equivalents
Money market funds	$114,887	$108,274
Total	114,887	108,274
Liabilities:
Total		2
Foreign Currency Derivative Contracts [Member]
Liabilities:
Foreign currency derivative contracts		2
Fair Value, Inputs, Level 1 [Member]
Cash equivalents
Money market funds	114,887	108,274
Total	114,887	108,274
Fair Value, Inputs, Level 2 [Member]
Liabilities:
Total		2
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Derivative Contracts [Member]
Liabilities:
Foreign currency derivative contracts		$2

Property_and_Equipment_Schedul

Property and Equipment - Schedule of Property and Equipment (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property and equipment	$33,509	$30,253
Accumulated depreciation and amortization	-15,107	-12,581
Total property and equipment, net	18,402	17,672
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	8,272	7,748
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	22,216	19,574
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	337	337
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$2,684	$2,594

Property_and_Equipment_Additio

Property and Equipment - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Capital lease obligation	$900,000		$1,000,000
Property and equipment	33,509,000		30,253,000
Accumulated depreciation	15,107,000		12,581,000
Capitalized internal-use software development costs	2,400,000	1,100,000
Capitalized internal-use software cost, net	12,200,000		11,600,000
Amortization expense related to capitalized internal-use software	1,800,000	800,000
Capital Lease Obligations [Member] | Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,700,000		1,700,000
Accumulated depreciation	$800,000		$700,000

Property_and_Equipment_Breakou

Property and Equipment - Breakout of Depreciation and Amortization Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$2,520	$1,347
Subscription [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	1,095	509
Services [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	60	38
Sales and Marketing [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	108	46
Research and Development [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	1,212	592
General and Administrative [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$45	$162

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Contingencies And Commitments [Line Items]
Operating lease agreement expire period		2018
Capital lease term	36 months
Weighted-average interest rate implicit in leases	5.50%
Rent expense under operating leases		$1.20	$1.10
Total outstanding letters of credit		1.3		1.3
Arlington, Virginia [Member]
Contingencies And Commitments [Line Items]
Total outstanding letters of credit		0.6
San Francisco, California [Member]
Contingencies And Commitments [Line Items]
Total outstanding letters of credit		$0.70

Commitments_and_Contingencies_2

Commitments and Contingencies - Summary of Lease Commitments (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Leases [Abstract]
Operating Leases, 2015 (April - December)	$4,302
Operating Leases, 2016	4,935
Operating Leases, 2017	2,804
Operating Leases, 2018	470
Total lease obligations	12,511
Capital Leases, 2015 (April - December)	447
Capital Leases, 2016	406
Capital Leases, 2017	63
Capital Leases, 2018	0
Capital Leases, Gross	916
Less: Amounts representing interest	41
Total lease obligations, Capital Leases	$875

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
	Class_of_Stock	Class_of_Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of classes of stock	2	2
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	50,939,000	50,372,000
Common stock, shares outstanding	50,939,000	50,372,000
Undesignated Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares authorized	25,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Stockholders_Equity_Summary_of

Stockholders' Equity - Summary of Accumulated Other Comprehensive Loss (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Equity [Abstract]
Foreign currency translation, Beginning balance	($242)
Foreign currency translation, Other comprehensive income (loss) before reclassifications	-60
Foreign currency translation, Reclassifications to net income	0
Foreign currency translation, Other comprehensive income (loss)	-60	-167
Foreign currency translation, Ending balance	-302
Foreign currency derivative instruments, Beginning balance	-56
Foreign currency derivative instruments, Other comprehensive income (loss) before reclassifications	13
Foreign currency derivative instruments, Reclassifications to net income	-7
Foreign currency derivative instruments, Other comprehensive income (loss)	6	21
Foreign currency derivative instruments, Ending balance	-50
Accumulated other comprehensive loss, Beginning balance	-298
Accumulated other comprehensive loss, Other comprehensive income (loss) before reclassifications	-47
Accumulated other comprehensive loss, Reclassifications to net income	-7
Total other comprehensive loss	-54	-146
Accumulated other comprehensive loss, Ending balance	($352)

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options Outstanding, Beginning Balance	5,815
Options Outstanding, Granted	0
Options Outstanding, Exercised	-414
Options Outstanding, Forfeited	-81
Options Outstanding, Ending Balance	5,320	5,815
Options Outstanding, Vested and expected to vest Ending Balance	5,182
Options Outstanding, Exercisable Ending Balance	3,997
Weighted-Average Exercise Price, Beginning Balance	$4.40
Weighted-Average Exercise Price, Granted	$0
Weighted-Average Exercise Price, Exercised	$2.01
Weighted-Average Exercise Price, Forfeited	$9.04
Weighted-Average Exercise Price, Ending Balance	$4.52	$4.40
Weighted-Average Exercise Price, Vested and expected to vest Ending Balance	$4.45
Weighted-Average Exercise Price, Exercisable Ending Balance	$4.79
Weighted-Average Remaining Contractual Term	7 years	7 years 3 months 18 days
Weighted-Average Remaining Contractual Term, Vested or expected to vest	7 years
Weighted-Average Remaining Contractual Term, Exercisable	6 years 9 months 18 days
Aggregate Intrinsic Value, Beginning Balance	$57,715
Aggregate Intrinsic Value, Ending Balance	32,022	57,715
Aggregate Intrinsic Value, Vested or expected to vest Ending Balance	31,435
Aggregate Intrinsic Value, Exercisable Ending Balance	$25,054

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (2007 Stock Plan [Member], USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
2007 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options subject to repurchase	0.1	0.2
Aggregate exercise price	$0.30	$0.40

StockBased_Compensation_Summar1

Stock-Based Compensation - Summary of Additional Information on Stock Option Granted, Vested and Exercised (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total fair value of stock options granted		$434
Total fair value of shares vested	1,288	1,306
Total intrinsic value of stock options exercised	4,242	9,003
Cash received from stock options exercised	$835	$1,251

StockBased_Compensation_Summar2

Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Detail) (Restricted Stock Units [Member], USD $)	3 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs Outstanding, Beginning balance	2,838
RSUs Outstanding, Granted	812
RSUs Outstanding, Released	-230
RSUs Outstanding, Forfeited	-150
RSUs Outstanding, Ending balance	3,270	2,838
RSUs Outstanding, Vested and expected to vest after March 31, 2015	2,879
Weighted-Average Grant Date Fair Value, Beginning balance	$16.77
Weighted-Average Grant Date Fair Value, Granted	$15.14
Weighted-Average Grant Date Fair Value, Released	$16.75
Weighted-Average Grant Date Fair Value, Forfeited	$16.62
Weighted-Average Grant Date Fair Value, Ending balance	$16.37	$16.77
Weighted-Average Grant Date Fair Value, Vested and expected to vest after March 31, 2015	$16.34
Weighted-Average Remaining Contractual Term (Years)	6 years 4 months 24 days	6 years 4 months 24 days
Weighted-Average Remaining Contractual Term (Years), Vested and expected to vest after March 31, 2015	6 years 4 months 24 days
Aggregate Intrinsic Value, Beginning balance	$40,391
Aggregate Intrinsic Value, Ending balance	33,136	40,391
Aggregate Intrinsic Value, Vested and expected to vest after March 31, 2015	$29,167

StockBased_Compensation_StockB

Stock-Based Compensation - Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$5,004	$1,662
Subscription [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	147	15
Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	265	64
Sales and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	1,888	749
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	1,658	297
General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation expense	$1,046	$537

StockBased_Compensation_Summar3

Stock-Based Compensation - Summary of Unrecognized Compensation Expense, Net of Estimated Forfeitures and Weighted Average Remaining Amortization Period (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$49,416
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	37,686
Weighted-Average Amortization Period	2 years 8 months 12 days
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$11,730
Weighted-Average Amortization Period	2 years 6 months

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$0

Net_Income_Loss_Per_Share_Summ

Net Income (Loss) Per Share - Summary of Calculation of Company's Basic and Diluted Net Loss Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Net loss	($10,974)	($6,980)
Non-cumulative dividends to preferred stockholders	0	0
Net loss attributable to common stockholders	($10,974)	($6,980)
Denominator:
Weighted-average common stock outstanding, basic	50,523	22,002
Effect of potentially dilutive stock options and restricted stock units	0	0
Weighted-average common stock outstanding, diluted	50,523	22,002
Net loss per share, basic and diluted	($0.22)	($0.32)

Net_Income_Loss_Per_Share_Summ1

Net Income (Loss) Per Share - Summary of Potential Shares Excluded from Calculation of Diluted Net Loss Per Share (Detail)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	8,698	28,289
Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share		19,247
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	5,320	7,166
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	3,270	1,552
Common Stock Subject to Repurchase [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	108	324

Geographic_Information_Additio

Geographic Information - Additional Information (Detail) (Revenue [Member], Customer Concentration Risk [Member])	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Concentration Risk [Line Items]
Revenue concentration percentage	10.00%
United States [Member]
Concentration Risk [Line Items]
Revenue concentration percentage	89.00%	86.00%