Xoom 10-Q 29 Jul 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 21, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Trading Symbol	'xoom	'
Entity Registrant Name	'XOOM CORP	'
Entity Central Index Key	'0001315657	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	38,188,189

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$98,137	$110,979
Disbursement prefunding	40,299	33,799
Short-term investments	107,851	104,678
Customer funds receivable	25,065	16,381
Prepaid expenses and other current assets	5,288	4,237
Total current assets	276,640	270,074
Non-current assets:	'	'
Property, equipment and software, net	7,493	4,855
Goodwill	9,032	'
Intangibles, net	5,543	250
Restricted cash	10,969	7,816
Other assets	2,164	1,084
Total assets	311,841	284,079
Current liabilities:	'	'
Accounts payable and accrued expenses	10,212	8,345
Customer liabilities	21,392	10,791
Total current liabilities	31,604	19,136
Non-current liabilities:	'	'
Other non-current liabilities	3,019	99
Total liabilities	34,623	19,235
Commitments and Contingencies (Note 12)	'	'
Stockholders' equity:	'	'
Convertible preferred stock, $0.0001 par value, 25,000,000 shares authorized; issued and outstanding 0 shares; aggregate liquidation preference $0 at June 30, 2014 and December 31, 2013	'	'
Common stock, $0.0001 par value, 500,000,000 shares authorized; issued and outstanding 38,183,373 and 37,583,945 shares at June 30, 2014 and December 31, 2013, respectively	4	4
Additional paid-in capital	332,511	321,878
Accumulated other comprehensive loss	-9	'
Accumulated deficit	-55,288	-57,038
Total stockholders' equity	277,218	264,844
Total liabilities and stockholders' equity	$311,841	$284,079

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Statement Of Financial Position [Abstract]	'	'
Convertible preferred stock, par value	$0.00	$0.00
Convertible preferred stock, authorized	25,000,000	25,000,000
Convertible preferred stock, issued	0	0
Convertible preferred stock, outstanding	0	0
Convertible preferred stock, aggregate liquidation preference	$0	$0
Common stock, par value	$0.00	$0.00
Common stock, authorized	500,000,000	500,000,000
Common stock, issued	38,183,373	37,583,945
Common stock, outstanding	38,183,373	37,583,945

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]	'	'	'	'
Revenue	$39,844	$33,493	$75,782	$57,808
Cost of revenue	12,977	10,119	22,555	17,638
Gross profit	26,867	23,374	53,227	40,170
Marketing	7,356	6,907	16,138	12,599
Technology and development	8,801	5,476	16,651	10,310
Customer service and operations	4,371	3,325	8,345	6,342
General and administrative	4,817	3,039	9,975	5,962
Total operating expense	25,345	18,747	51,109	35,213
Income from operations	1,522	4,627	2,118	4,957
Other income (expense):	'	'	'	'
Interest expense	-344	-499	-672	-946
Interest income	69	41	145	77
Other income	170	53	190	57
Income before provision for income taxes	1,417	4,222	1,781	4,145
Provision for income taxes	19	132	31	134
Net income	$1,398	$4,090	$1,750	$4,011
Net income per share:	'	'	'	'
Basic	$0.04	$0.12	$0.05	$0.15
Diluted	$0.03	$0.11	$0.04	$0.11
Weighted-average shares used to compute net income per share	'	'	'	'
Basic	38,102	32,974	37,952	26,046
Diluted	41,622	37,263	41,667	35,865

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net income	$1,398	$4,090	$1,750	$4,011
Unrealized loss on marketable securities, net of taxes of $0	-4	-19	-9	-29
Total comprehensive income	$1,394	$4,071	$1,741	$3,982

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net income	$1,750	$4,011
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'
Stock-based compensation	4,257	1,737
Depreciation and other amortization expense	1,619	972
Amortization of acquired intangible	407	'
Amortization of premium on investments	741	409
Amortization of warrant issuance costs	11	55
Changes in operating assets and liabilities:	'	'
Disbursement prefunding	-6,412	834
Customer funds receivable	-8,685	-38,138
Prepaid expenses and other current assets	-918	651
Other assets	235	84
Customer liabilities	10,601	15,106
Accounts payable and accrued expenses	767	1,009
Other non-current liabilities	1,420	4
Net cash provided by (used in) operating activities	5,793	-13,266
Cash flows from investing activities:	'	'
Purchase of property, equipment and software	-4,460	-798
Purchase of short-term investments	-81,089	-60,939
Proceeds from sales and maturities of short-term investments	77,167	24,055
Cash paid in business combination, net of cash received	-8,874	'
Change in restricted cash	-3,153	-1,014
Net cash used in investing activities	-20,409	-38,696
Cash flows from financing activities:	'	'
Proceeds from exercise of common stock options	1,759	535
Excess tax benefit related to stock-based compensation	15	'
Net repayments under line of credit	'	9,000
Proceeds from initial public offering, net of costs	'	88,422
Net cash provided by financing activities	1,774	97,957
Net increase (decrease) in cash and cash equivalents	-12,842	45,995
Cash and cash equivalents, beginning of period	110,979	45,077
Cash and cash equivalents, end of period	98,137	91,072
Supplemental disclosures of cash flow information:	'	'
Cash paid for taxes	2	2
Cash paid for interest	474	706
Holdback liability in connection with acquisition of BlueKite, LTD	1,500	'
Issuance of common stock equity in connection with acquisition of BlueKite, LTD	4,470	'
Purchases of property and equipment in accounts payable and accrued expenses	1,220	123
Deferred offering costs not yet paid	'	$9

Business_and_Basis_of_Presenta

Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Business and Basis of Presentation	'
	(1)  Business and Basis of Presentation
	(a)  Business Overview
	Xoom Corporation and its subsidiaries (together, “Xoom” or the “Company”) is a leader in the digital consumer-to-consumer international money transfer industry.  Xoom provides its customers with fast and convenient ways to send money to friends and family in 30 countries using their bank account, credit card, or debit card.
	Xoom was incorporated in California in June 2001 and reincorporated in Delaware in November 2012. The Company’s corporate headquarters is located in San Francisco, California.
	(b)  Basis of Presentation and Consolidation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements.
	In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair presentation of the results for the interim periods presented have been included. All significant intercompany balances and transactions have been eliminated.
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts in the financial statements and accompanying notes. These estimates are based on information available as of the date of the unaudited condensed consolidated financial statements. Therefore, actual results could differ from those estimates. Interim results are not necessarily indicative of the results for a full year.
	These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes contained in the Company’s Annual Report on Form 10-K filed with the SEC on February 21, 2014 (the “Annual Report”). Certain items in the prior period’s consolidated financial statements have been reclassified to conform to the current period’s presentation. These reclassifications did not impact any prior amounts of reported total assets, total liabilities, stockholders’ equity or results of operations.
	Business events in 2014 required the Company to make additions to the accounting policies for business combinations and stock-based compensation, as more fully set forth below. There have been no other changes in the significant accounting policies as disclosed in the audited consolidated financial statements for 2013 included in the Annual Report.
	Business Combination
	The Company accounts for an acquisition of an entity that includes inputs and processes and has the ability to create outputs as a business combination. Under the acquisition method of accounting, the Company allocates the purchase price to the identifiable assets and liabilities based on their estimated fair value at the date of acquisition. The Company records the excess of the purchase price over the total net identifiable assets as goodwill. Acquired intangible assets are amortized over their estimated useful lives. Acquisition-related expenses are expensed as incurred.
	Stock-based Compensation
	The Company began granting Restricted Stock Units (“RSUs”) in January 2014 to its employees. The stock-based compensation expense related to RSUs is recognized on a ratable basis over the requisite service period of the grant. The fair value of RSUs is determined using the fair value of the Company’s common stock on the date of grant.
	(c) Recently Issued Accounting Pronouncement
	In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers.” The pronouncement was issued to clarify the principles for recognizing revenue and to develop a common revenue standard and disclosure requirements for U.S. GAAP and International Financial Reporting Standards. The pronouncement is effective for reporting periods beginning after December 15, 2016. The Company is currently evaluating the effect that the updated standard will have on the Company’s consolidated financial statements and related disclosures.

Shortterm_Investments

Short-term Investments	6 Months Ended
	Jun. 30, 2014
Short-term Investments [Abstract]	'
Short-term Investments	'
	(2)  Short-term Investments
	Marketable securities, classified as available‑for‑sale, are stated at fair value. There were no other-than-temporary losses during any of the periods presented.
	As of June 30, 2014, the Company’s short-term investments were $107.9 million, consisting of certificates of deposit of $3.0 million and marketable securities measured at fair value as follows (in thousands):
		30-Jun-14
		Amortized cost		Unrealized gains		Unrealized loss		Fair value
		(unaudited)
	U.S. agency notes	$	22,535	$	1	$	-4	$	22,532
	Corporate bonds		43,148		2		-9		43,141
	Commercial paper		39,177		1		—		39,178
	Total Marketable Securities	$	104,860	$	4	$	-13	$	104,851
	As of December 31, 2013, the Company’s short-term investments were $104.7 million, consisting of certificates of deposit of $2.0 million and marketable securities measured at fair value as follows (in thousands):
			31-Dec-13
		Amortized cost		Unrealized gains		Unrealized loss		Fair value
	U.S. agency notes	$	23,298	$	1	$	-2	$	23,297
	Corporate bonds		42,766		7		-5		42,768
	Commercial paper		36,614		—		-1		36,613
	Total Marketable Securities	$	102,678	$	8	$	-8	$	102,678
	As of June 30, 2014 and December 31, 2013, there were no short-term investments with maturity dates greater than one year.

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	(3)  Fair Value Measurements
	Fair value is an exit price, the amount that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. The authoritative guidance on fair value measurements establishes a consistent framework for measuring fair value on either a recurring or nonrecurring basis whereby inputs, used in valuation techniques, are assigned a hierarchical level. The Company’s marketable securities are stated at fair value utilizing the same hierarchy.
	The following three levels of inputs are used to measure fair value:
	Level 1: Quoted prices in active markets for identical assets or liabilities.
	Level 2: Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include items where the determination of fair value requires significant management judgment or estimation.
	The book value of the Company’s financial instruments not measured at fair value on a recurring basis, including cash, certificates of deposit, restricted cash, disbursement prefunding, customer funds receivables, line of credit and customer liabilities, approximates fair value due to the relatively short maturity, cash repayment terms or market interest rates of such instruments. The fair value of such financial instruments is determined using the income approach based on the present value of estimated future cash flows. The fair value of all of these instruments would be categorized as Level 2 of the fair value hierarchy, with the exception of cash and restricted cash which would be categorized as Level 1.
	The Company’s cash equivalents and marketable securities that are measured at fair value on a recurring basis are classified as follows (in thousands):
		30-Jun-14						31-Dec-13
		Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
		(unaudited)
	Cash Equivalents:
	Money market funds	$	42,642	$	—	$	—	$	43,815	$	—	$	—
	Corporate bonds		—		375		—		—		—		—
	Commercial paper		—		1,650		—		—		2,143		—
	Marketable Securities:
	U.S. agency notes		—		22,532		—		—		23,297		—
	Corporate bonds		—		43,141		—		—		42,768		—
	Commercial paper		—		39,178		—		—		36,613		—
		$	42,642	$	106,876	$	—	$	43,815	$	104,821	$	—
	Financial instruments, which are traded in active markets, using quoted market prices for identical instruments are assigned a Level 1 under the fair value hierarchy. The Company obtains the fair value of its Level 2 financial instruments from a professional pricing service, which may use quoted market prices for identical or comparable instruments, or inputs other than quoted prices that are observable either directly or indirectly. The professional pricing service gathers quoted market prices and observable inputs for the Company’s financial instruments from a variety of industry data providers. The valuation techniques used to measure the fair value of Level 2 financial instruments were derived from nonbinding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models such as discounted cash flow techniques. There were no material changes in the valuation techniques during any of the periods presented.
	To validate the reasonableness of fair values obtained from a professional pricing service, the Company performs several controls including periodic meetings with the pricing service and the Company’s custodians, obtaining the internal control reports of the pricing service and investigating any significant realized or unrealized gains or losses on its short-term investments.
	There were no transfers between Level 1 and Level 2 assets during any of the periods presented.

Property_Equipment_and_Softwar

Property, Equipment and Software, Net	6 Months Ended
	Jun. 30, 2014
Property Plant And Equipment [Abstract]	'
Property, Equipment and Software, Net	'
	(4)  Property, Equipment and Software, Net
	The following is a summary of property, equipment and software at cost, less accumulated depreciation and amortization (in thousands):
		June 30,		December 31,
		2014		2013
			(unaudited)
	Office furniture and equipment	$	6,302	$	5,580
	Software		5,100		4,049
	Leasehold improvements		2,855		405
	Total		14,257		10,034
	Less: accumulated depreciation		-6,764		-5,179
	Property, equipment and software, net	$	7,493	$	4,855

Business_Combination

Business Combination	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Business Combination	'
	(5)  Business Combination
	On January 10, 2014 (the “Closing Date”), the Company acquired all of the outstanding equity of BlueKite, LTD (the “Acquisition”), for a total purchase price of $14.9 million. The purchase price was comprised of $8.9 million in cash, $2.2 million in immediate common stock equity, $2.3 million in contingent common stock equity issuable to selling non-employee stockholders of BlueKite, LTD and $1.5 million as a holdback amount for 18 months following the Closing Date to satisfy any unresolved claims that may arise.
	The equity component of the transaction included $2.2 million of shares issued on the Closing Date and $2.3 million of additional shares issuable to the selling non-employee stockholders of BlueKite, LTD contingent upon certain selling employee stockholders remaining employed with the Company through a certain period.  In the event that this condition is not satisfied, the shares issuable to the selling non-employee stockholders may be forfeited at the Company’s discretion. The fair value of the shares issuable to the selling non-employee stockholders ($2.3 million) was recorded as purchase consideration based on the closing trading price of the Company’s stock on the Closing Date. In addition to the $2.3 million described above, $0.2 million of shares are issuable to selling employee stockholders who are required to remain employed with the Company through a certain period. To the extent such employees remain employed with the Company, the fair value of these shares issuable to them ($0.2 million) is being recorded as compensation expense as the services are rendered.
	The following table summarizes the allocation of the total purchase price and the fair value of net tangible and intangible assets acquired as a result of the Acquisition (in thousands):
		(unaudited)
	Developed technology	$	5,700
	Net tangible assets acquired		154
	Goodwill		9,032
	Total purchase price	$	14,886
	The Company has included the effects of the Acquisition within the results of operations prospectively from the Closing Date. Pro forma financial information for this business combination has not been presented, as the effects are not material to the Company’s historical consolidated financial statements.
	Goodwill, which is not deductible for tax purposes, represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired, and is primarily attributable to the knowledgeable and experienced workforce of the acquired business and expected synergies at the time of the Acquisition.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	(6)  Goodwill and Other Intangible Assets
	The Company recorded $9.0 million of goodwill and $5.7 million of an identifiable intangible asset (developed technology) in connection with the Acquisition. Developed technology is being amortized on a straight-line basis over an estimated useful life of seven years. Amortization expense related to the amortizable intangible asset for the three and six months ended June 30, 2014 was $0.2 million and $0.4 million, respectively, and is included in technology and development expense in the accompanying condensed consolidated statements of income. There was no amortization expense related to any amortizable intangible assets for the three and six months ended June 30, 2013. As of June 30, 2014, the estimated future amortization expense of the acquired intangible asset (developed technology) for each of the succeeding five years and thereafter is as follows (in thousands, unaudited):
	Year ending December 31:
	2014 (from July 1, 2014)	$	407
	2015		814
	2016		814
	2017		814
	2018		814
	Thereafter		1,630
	Total amortization expense	$	5,293

Accounts_Payable_and_Accrued_E

Accounts Payable and Accrued Expenses	6 Months Ended
	Jun. 30, 2014
Payables And Accruals [Abstract]	'
Accounts Payable and Accrued Expenses	'
	(7)  Accounts Payable and Accrued Expenses
	The following is a summary of accounts payable and accrued expenses (in thousands):
			June 30,		December 31,
			2014		2013
				(unaudited)
	Accounts payable		$	1,690	$	711
	Accrued processing and disbursement costs			2,103		2,120
	Accrued marketing expense			1,189		1,940
	Other accrued expenses			5,230		3,574
			$	10,212	$	8,345
	Other accrued expenses in the table above include the reserve for transaction losses. The Company is exposed to transaction losses due to fraud, as well as nonperformance of third parties and customers. The Company establishes a reserve for such losses based on historical trends and any specific risks identified in processing customer transactions. The following table summarizes the activities of the Company’s reserve for transaction losses during the period presented (in thousands, unaudited):
	Balance as of December 31, 2013	$	223
	Additions to expense		6,717
	Losses incurred, net of recoveries		-6,603
	Balance as of June 30, 2014	$	337

Line_of_Credit

Line of Credit	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Line of Credit	'
	(8)  Line of Credit
	In September 2013, the Company entered into an Amended and Restated Credit Agreement (the “Restated Loan Agreement”) with Silicon Valley Bank (“SVB”) and other lenders.  The Restated Loan Agreement added additional lenders, increased the available borrowing amount to $150.0 million through September 2016 and changed certain of the financial provisions. Under the Restated Loan Agreement, the Company pays a fee of 0.50% per annum for the daily unused portions of the line of credit. The interest rate at June 30, 2014 and December 31, 2013 was 4.25%.  The Company paid a one-time commitment fee of $430,000 in 2013. The Company also paid SVB a one-time arrangement fee of 0.30% of the amount available under the line of credit and an annual administration fee of $45,000 in 2013. These expenses, except the annual administration fee which is expensed over twelve months, are being amortized over the period of the Restated Loan Agreement.
	SVB issued a standby letter of credit for $15.0 million which satisfied an additional collateral requirement to maintain the Company’s India operations. In connection with the new lease arrangement the Company entered into in December 2013, which is described in the “Contractual Obligations and Commitments” section of Item 2 of this report, SVB issued a $3.9 million letter of credit in January 2014 as a security deposit for the Company’s new office lease.
	As of June 30, 2014, the Company had $131.1 million available under its $150.0 million line of credit, reflecting $18.9 million reserved under the two letters of credit.

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	(9)  Income Taxes
	The income tax provision for the three months ended June 30, 2014 and 2013 was $19,000 and $132,000, respectively, and the income tax provision for the six months ended June 30, 2014 and 2013 was $31,000 and $134,000, respectively. The Company provides for income taxes using an asset and liability approach, under which deferred income taxes are provided based upon enacted tax laws and rates applicable to periods in which the taxes become payable.
	The Company is subject to income tax in U.S. federal, various U.S. state and foreign tax jurisdictions. Presently, there are no ongoing income tax examinations in the jurisdictions where the Company operates.
	As of June 30, 2014, the Company has a full valuation allowance against its deferred tax asset. The realization of the Company’s deferred tax asset depends primarily on its ability to generate sufficient U.S. taxable income in future periods. The amount of deferred tax asset considered realizable may increase or decrease in subsequent quarters as management reevaluates the underlying basis for the estimates of future domestic taxable income. Significant judgment is required in making this assessment, and it is very difficult to predict when management’s assessment may conclude that the remaining portion of the deferred tax asset is realizable. Based on historical and projected operating performance, and to the extent management expects that the Company’s operations will generate sufficient taxable income in future periods, the Company may partially or fully release the deferred tax valuation allowance in a future period.

Stockbased_Compensation

Stock-based Compensation	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-based Compensation	'
	(10)  Stock-based Compensation
	Stock‑based compensation expense included in the Company’s condensed consolidated statements of income during the periods presented is as follows (in thousands):
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(unaudited)
	Stock-based compensation expense:
	Marketing	$	266		$	106		$	499		$	198
	Technology and development		787			296			1,406			522
	Customer service and operations		209			107			402			184
	General and administrative		1,071			450			1,950			833
	Total stock-based compensation	$	2,333		$	959		$	4,257		$	1,737
	(a)  Stock Options
	The fair value of options granted was estimated at the date of the grant using a Black-Scholes option-pricing model. The weighted-average grant date fair value of options granted was $7.99 and $8.98 for the three months ended June 30, 2014 and 2013, respectively, and $11.71 and $8.98 for the six months ended June 30, 2014 and 2013, respectively. The following table presents the weighted-average assumptions for options granted during the periods presented:
		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
		(unaudited)
	Expected term (in years)	5.6		6.2		6.2		6.2
	Risk-free interest rate	1.67%		1.02%		2.03%		1.02%
	Dividend yield	None		None		None		None
	Volatility rate	36%		44%		43%		44%
	Stock option activity and related information during the period indicated was as follows (unaudited):
				Weighted-					Exercisable
				Average					Weighted-
		Options		Exercise			Options		Average
		Outstanding		Price			Exercisable		Exercise Price
	Outstanding as of December 31, 2013	6,045,912		$	7.72		3,195,701		$	3.64
	Granted	1,277,572			26.20
	Exercised	-517,146			3.43
	Forfeited and cancelled	-64,620			19.07
	Outstanding as of June 30, 2014	6,741,718		$	11.44		3,433,826		$	5.50
	As of June 30, 2014, there were 6,671,244 options that had vested or are expected to vest with a weighted-average exercise price of $11.36 and a weighted-average remaining contractual life of 6.9 years. As of December 31, 2013, there were 5,988,706 options that had vested and were expected to vest with a weighted-average exercise price of $7.67 and a weighted-average remaining contractual life of 6.6 years.
	The aggregate intrinsic value of options outstanding was $101.8 million and the aggregate intrinsic value of options exercisable was $71.6 million as of June 30, 2014.
	The total intrinsic value of options exercised was approximately $3.6 million and $807,000 for the three months ended June 30, 2014 and 2013, respectively, and $11.4 million and $4.0 million for the six months ended June 30, 2014 and 2013, respectively.
	As of June 30, 2014, there was $23.4 million of total unrecognized compensation expense related to option grants, which is expected to be recognized over a weighted-average period of 2.6 years.
	(b)  Restricted Stock Units
	The Company began granting RSUs to its employees in January 2014. The fair value of the RSUs is determined using the fair value of the Company’s common stock on the date of grant. These RSUs typically vest and become exercisable annually over four years. Stock-based compensation expense is amortized on a straight-line basis over the requisite service period.
	The following table shows a summary of RSU activity for the six months ended June 30, 2014 (unaudited):
		Outstanding RSUs
				Weighted-
				Average
				Grant Date
		Shares		FairValue
	Unvested as of January 1, 2014	—		$	—
	Granted	258,895			19.41
	Vested	—			—
	Forfeited and cancelled	-16,250			24.54
	Unvested as of June 30, 2014	242,645		$	19.07
	As of June 30, 2014, there was $4.0 million of total unrecognized compensation expense related to RSUs, which is expected to be recognized over a weighted-average period of 2.5 years.

Earnings_Per_Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	(11)  Earnings Per Share
	Basic earnings per share is computed by dividing the net income by the weighted-average number of shares of common stock outstanding during the period.  Diluted earnings per share is computed using the weighted-average number of shares of common stock outstanding during the period and, when dilutive, potential common shares outstanding during the period. Potential common shares consist of incremental shares issuable upon the assumed exercise of stock options, preferred stock, unvested RSUs and contingent consideration related to the Acquisition.
	The following table presents the calculation of earnings per share (in thousands, except per share data):
		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
		(unaudited)
	Basic earnings per share:
	Numerator:
	Net income	$	1,398	$	4,090	$	1,750	$	4,011
	Denominator:
	Weighted-average common shares		38,102		32,974		37,952		26,046
	Basic earnings per share	$	0.04	$	0.12	$	0.05	$	0.15
	Diluted earnings per share:
	Numerator:
	Net income	$	1,398	$	4,090	$	1,750	$	4,011
	Denominator:
	Weighted-average common shares		38,102		32,974		37,952		26,046
	Weighted-average shares from convertible preferred stock		—		—		—		5,331
	Weighted-average dilutive stock options and RSUs		3,432		4,289		3,632		4,481
	Effect of other dilutive securities		—		—		—		7
	Contingent stock due to acquisition		88		—		83		—
	Weighted-average common shares and equivalents		41,622		37,263		41,667		35,865
	Diluted earnings per share	$	0.03	$	0.11	$	0.04	$	0.11
	The following securities have been excluded from the calculation of diluted net earnings per share of common stock for the periods presented because their effect would have been anti-dilutive (in thousands):
		Three Months Ended June 30,				Six Months Ended June 30,
		2014		2013		2014		2013
		(unaudited)
	Stock options outstanding	1,947		349		1,911		355
	Unvested RSUs	32		—		35		—
	Total common stock equivalents	1,979		349		1,946		355

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	(12)  Commitments and Contingencies
	(a)  Operating Leases
	The Company conducts operations from leased facilities under operating lease agreements that expire at various dates through 2024. The terms of the lease agreements provide for rental payments on a graduated basis.  The Company recognizes rent expense on a straight-line basis over the lease period.
	After entering into a lease arrangement in December 2013 for office space for its new corporate headquarters, which arrangement commenced in July 2014, the Company entered into sublease agreements in May and July 2014 for certain portions of its current corporate headquarters, both of which subleases will commence in August 2014. The sublease agreements expire in October 2016.
	(b)  Litigation
	The Company may be involved from time to time in various legal proceedings in the normal course of business, but is currently not a party to any material pending legal proceedings.

Accounting_Policies

Accounting Policies	6 Months Ended
	Jun. 30, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Basis of Presentation and Consolidation	'
	(b)  Basis of Presentation and Consolidation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements.
	In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair presentation of the results for the interim periods presented have been included. All significant intercompany balances and transactions have been eliminated.
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect reported amounts in the financial statements and accompanying notes. These estimates are based on information available as of the date of the unaudited condensed consolidated financial statements. Therefore, actual results could differ from those estimates. Interim results are not necessarily indicative of the results for a full year.
	These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes contained in the Company’s Annual Report on Form 10-K filed with the SEC on February 21, 2014 (the “Annual Report”). Certain items in the prior period’s consolidated financial statements have been reclassified to conform to the current period’s presentation. These reclassifications did not impact any prior amounts of reported total assets, total liabilities, stockholders’ equity or results of operations.
	Business events in 2014 required the Company to make additions to the accounting policies for business combinations and stock-based compensation, as more fully set forth below. There have been no other changes in the significant accounting policies as disclosed in the audited consolidated financial statements for 2013 included in the Annual Report.
Business Combination	'
	Business Combination
	The Company accounts for an acquisition of an entity that includes inputs and processes and has the ability to create outputs as a business combination. Under the acquisition method of accounting, the Company allocates the purchase price to the identifiable assets and liabilities based on their estimated fair value at the date of acquisition. The Company records the excess of the purchase price over the total net identifiable assets as goodwill. Acquired intangible assets are amortized over their estimated useful lives. Acquisition-related expenses are expensed as incurred.
Stock-based Compensation	'
	Stock-based Compensation
	The Company began granting Restricted Stock Units (“RSUs”) in January 2014 to its employees. The stock-based compensation expense related to RSUs is recognized on a ratable basis over the requisite service period of the grant. The fair value of RSUs is determined using the fair value of the Company’s common stock on the date of grant.
Recently Issued Accounting Pronouncement	'
	(c) Recently Issued Accounting Pronouncement
	In May 2014, the Financial Accounting Standards Board issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers.” The pronouncement was issued to clarify the principles for recognizing revenue and to develop a common revenue standard and disclosure requirements for U.S. GAAP and International Financial Reporting Standards. The pronouncement is effective for reporting periods beginning after December 15, 2016. The Company is currently evaluating the effect that the updated standard will have on the Company’s consolidated financial statements and related disclosures.

Shortterm_Investments_Tables

Short-term Investments (Tables)	6 Months Ended									12 Months Ended
	Jun. 30, 2014									Dec. 31, 2013
Short-term Investments [Abstract]	'									'
Marketable Securities Measured at Fair Value	'									'
		30-Jun-14										31-Dec-13
		Amortized cost		Unrealized gains		Unrealized loss		Fair value			Amortized cost		Unrealized gains		Unrealized loss		Fair value
		(unaudited)								U.S. agency notes	$	23,298	$	1	$	-2	$	23,297
	U.S. agency notes	$	22,535	$	1	$	-4	$	22,532	Corporate bonds		42,766		7		-5		42,768
	Corporate bonds		43,148		2		-9		43,141	Commercial paper		36,614		—		-1		36,613
	Commercial paper		39,177		1		—		39,178	Total Marketable Securities	$	102,678	$	8	$	-8	$	102,678
	Total Marketable Securities	$	104,860	$	4	$	-13	$	104,851

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Cash Equivalents and Marketable Securities, Measured at Fair Value on Recurring Basis	'
	The Company’s cash equivalents and marketable securities that are measured at fair value on a recurring basis are classified as follows (in thousands):
		30-Jun-14						31-Dec-13
		Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
		(unaudited)
	Cash Equivalents:
	Money market funds	$	42,642	$	—	$	—	$	43,815	$	—	$	—
	Corporate bonds		—		375		—		—		—		—
	Commercial paper		—		1,650		—		—		2,143		—
	Marketable Securities:
	U.S. agency notes		—		22,532		—		—		23,297		—
	Corporate bonds		—		43,141		—		—		42,768		—
	Commercial paper		—		39,178		—		—		36,613		—
		$	42,642	$	106,876	$	—	$	43,815	$	104,821	$	—

Property_Equipment_and_Softwar1

Property, Equipment and Software, Net (Tables)	6 Months Ended
	Jun. 30, 2014
Property Plant And Equipment [Abstract]	'
Summary of Property, Equipment and Software	'
	The following is a summary of property, equipment and software at cost, less accumulated depreciation and amortization (in thousands):
		June 30,		December 31,
		2014		2013
			(unaudited)
	Office furniture and equipment	$	6,302	$	5,580
	Software		5,100		4,049
	Leasehold improvements		2,855		405
	Total		14,257		10,034
	Less: accumulated depreciation		-6,764		-5,179
	Property, equipment and software, net	$	7,493	$	4,855

Business_Combination_Tables

Business Combination (Tables)	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Summary of Total Purchase Price Allocation and Fair Value of Net Tangible and Intangible Assets Acquired	'
		(unaudited)
	Developed technology	$	5,700
	Net tangible assets acquired		154
	Goodwill		9,032
	Total purchase price	$	14,886

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Estimated Future Amortization Expense of Purchased Intangible Asset	'
	As of June 30, 2014, the estimated future amortization expense of the acquired intangible asset (developed technology) for each of the succeeding five years and thereafter is as follows (in thousands, unaudited):
	Year ending December 31:
	2014 (from July 1, 2014)	$	407
	2015		814
	2016		814
	2017		814
	2018		814
	Thereafter		1,630
	Total amortization expense	$	5,293

Accounts_Payable_and_Accrued_E1

Accounts Payable and Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2014
Payables And Accruals [Abstract]	'
Summary of Accounts Payable and Accrued Expenses	'
			June 30,		December 31,
			2014		2013
				(unaudited)
	Accounts payable		$	1,690	$	711
	Accrued processing and disbursement costs			2,103		2,120
	Accrued marketing expense			1,189		1,940
	Other accrued expenses			5,230		3,574
			$	10,212	$	8,345
Reserve for Transaction Losses	'
	The following table summarizes the activities of the Company’s reserve for transaction losses during the period presented (in thousands, unaudited):
	Balance as of December 31, 2013	$	223
	Additions to expense		6,717
	Losses incurred, net of recoveries		-6,603
	Balance as of June 30, 2014	$	337

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock Based Compensation Expense Included in Condensed Consolidated Statements of Income	'
		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2014			2013			2014			2013
		(unaudited)
	Stock-based compensation expense:
	Marketing	$	266		$	106		$	499		$	198
	Technology and development		787			296			1,406			522
	Customer service and operations		209			107			402			184
	General and administrative		1,071			450			1,950			833
	Total stock-based compensation	$	2,333		$	959		$	4,257		$	1,737
Weighted Average Assumptions for Options Granted	'
		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
		(unaudited)
	Expected term (in years)	5.6		6.2		6.2		6.2
	Risk-free interest rate	1.67%		1.02%		2.03%		1.02%
	Dividend yield	None		None		None		None
	Volatility rate	36%		44%		43%		44%
Stock Option Activity and Related Information	'
				Weighted-					Exercisable
				Average					Weighted-
		Options		Exercise			Options		Average
		Outstanding		Price			Exercisable		Exercise Price
	Outstanding as of December 31, 2013	6,045,912		$	7.72		3,195,701		$	3.64
	Granted	1,277,572			26.20
	Exercised	-517,146			3.43
	Forfeited and cancelled	-64,620			19.07
	Outstanding as of June 30, 2014	6,741,718		$	11.44		3,433,826		$	5.50
Summary of RSU Activity	'
		Outstanding RSUs
				Weighted-
				Average
				Grant Date
		Shares		FairValue
	Unvested as of January 1, 2014	—		$	—
	Granted	258,895			19.41
	Vested	—			—
	Forfeited and cancelled	-16,250			24.54
	Unvested as of June 30, 2014	242,645		$	19.07

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
		(unaudited)
	Basic earnings per share:
	Numerator:
	Net income	$	1,398	$	4,090	$	1,750	$	4,011
	Denominator:
	Weighted-average common shares		38,102		32,974		37,952		26,046
	Basic earnings per share	$	0.04	$	0.12	$	0.05	$	0.15
	Diluted earnings per share:
	Numerator:
	Net income	$	1,398	$	4,090	$	1,750	$	4,011
	Denominator:
	Weighted-average common shares		38,102		32,974		37,952		26,046
	Weighted-average shares from convertible preferred stock		—		—		—		5,331
	Weighted-average dilutive stock options and RSUs		3,432		4,289		3,632		4,481
	Effect of other dilutive securities		—		—		—		7
	Contingent stock due to acquisition		88		—		83		—
	Weighted-average common shares and equivalents		41,622		37,263		41,667		35,865
	Diluted earnings per share	$	0.03	$	0.11	$	0.04	$	0.11
Securities Excluded from Calculation of Diluted Net Earnings Per Share	'
	The following securities have been excluded from the calculation of diluted net earnings per share of common stock for the periods presented because their effect would have been anti-dilutive (in thousands):
		Three Months Ended June 30,				Six Months Ended June 30,
		2014		2013		2014		2013
		(unaudited)
	Stock options outstanding	1,947		349		1,911		355
	Unvested RSUs	32		—		35		—
	Total common stock equivalents	1,979		349		1,946		355

Business_and_Basis_of_Presenta1

Business and Basis of Presentation - Additional Information (Detail)	Jun. 30, 2014
	country
Organization Consolidation And Presentation Of Financial Statements [Abstract]	'
Number of countries in which company provides services	30

Marketable_Securities_Measured

Marketable Securities Measured at Fair Value (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Short-term Investments [Abstract]	'	'
Short-term investments	$107,851	$104,678
Certificate of deposit	3,000	2,000
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	104,860	102,678
Unrealized gains	4	8
Unrealized loss	-13	-8
Fair value	104,851	102,678
U S Agency Notes [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	22,535	23,298
Unrealized gains	1	1
Unrealized loss	-4	-2
Fair value	22,532	23,297
Corporate Bonds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	43,148	42,766
Unrealized gains	2	7
Unrealized loss	-9	-5
Fair value	43,141	42,768
Commercial Paper [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized cost	39,177	36,614
Unrealized gains	1	'
Unrealized loss	'	-1
Fair value	$39,178	$36,613

Cash_Equivalents_and_Marketabl

Cash Equivalents and Marketable Securities, Measured at Fair Value on Recurring Basis (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	$104,851	$102,678
U S Agency Notes [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	22,532	23,297
Corporate Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	43,141	42,768
Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	39,178	36,613
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value assets measured on recurring basis	42,642	43,815
Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value assets measured on recurring basis	106,876	104,821
Fair Value Measurements Recurring [Member] | Level 1 [Member] | Money Market Funds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	42,642	43,815
Fair Value Measurements Recurring [Member] | Level 2 [Member] | U S Agency Notes [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	22,532	23,297
Fair Value Measurements Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	375	'
Marketable securities	43,141	42,768
Fair Value Measurements Recurring [Member] | Level 2 [Member] | Commercial Paper [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	1,650	2,143
Marketable securities	$39,178	$36,613

Summary_of_Property_Equipment_

Summary of Property, Equipment and Software (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property, equipment and software at cost	$14,257	$10,034
Less: accumulated depreciation	-6,764	-5,179
Property, equipment and software, net	7,493	4,855
Office Furniture And Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, equipment and software at cost	6,302	5,580
Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, equipment and software at cost	5,100	4,049
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, equipment and software at cost	$2,855	$405

Business_Combination_Additiona

Business Combination - Additional Information (Detail) (Bluekite Ltd [Member], USD $)	0 Months Ended
In Millions, unless otherwise specified	Jan. 10, 2014
Business Acquisition [Line Items]	'
Purchase price	$14.90
Cash payment	8.9
Common stock equity consideration	2.2
Contingent Equity Consideration [Member]	'
Business Acquisition [Line Items]	'
Common stock equity consideration	2.3
Compensation expense	0.2
Cash Holdback [Member]	'
Business Acquisition [Line Items]	'
Holdback amount for future unresolved claims	$1.50
Cash holdback period on acquisition	'18 months

Summary_of_Total_Purchase_Pric

Summary of Total Purchase Price Allocation and Fair Value of Net Tangible and Intangible Assets Acquired (Detail) (USD $)	Jun. 30, 2014	Jan. 10, 2014	Jan. 10, 2014
In Thousands, unless otherwise specified		Bluekite Ltd [Member]	Bluekite Ltd [Member]
			Developed Technology Rights [Member]
Business Acquisition [Line Items]	'	'	'
Developed technology	'	'	$5,700
Net tangible assets acquired	'	154	'
Goodwill	9,032	9,032	'
Total purchase price	'	$14,886	'

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	6 Months Ended
	Jan. 10, 2014	Jun. 30, 2014	Jun. 30, 2014
Goodwill And Other Intangible Assets [Line Items]	'	'	'
Goodwill acquired	'	$9,032,000	$9,032,000
Intangible asset acquired	5,700,000	'	'
Amortization expense, intangible assets	'	200,000	407,000
Developed Technology Rights [Member]	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'
Acquired intangible assets, useful life	'	'	'7 years
Bluekite Ltd [Member]	'	'	'
Goodwill And Other Intangible Assets [Line Items]	'	'	'
Goodwill acquired	$9,032,000	'	'

Estimated_Future_Amortization_

Estimated Future Amortization Expense of Purchased Intangible Asset (Detail) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'
2014 (from July 1, 2014)	$407
2015	814
2016	814
2017	814
2018	814
Thereafter	1,630
Total amortization expense	$5,293

Summary_of_Accounts_Payable_an

Summary of Accounts Payable and Accrued Expenses (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Accounts Payable Current	$1,690	$711
Accrued processing and disbursement costs	2,103	2,120
Accrued marketing expense	1,189	1,940
Other accrued expenses	5,230	3,574
Accounts payable and accrued expenses	$10,212	$8,345

Reserve_for_Transaction_Losses

Reserve for Transaction Losses (Detail) (Reserve For Transaction Losses [Member], USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014
Reserve For Transaction Losses [Member]	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'
Balance as of December 31, 2013	$223
Additions to expense	6,717
Losses incurred, net of recoveries	-6,603
Balance as of June 30, 2014	$337

Line_of_Credit_Additional_Info

Line of Credit - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended			12 Months Ended	0 Months Ended	1 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jan. 31, 2014	Sep. 30, 2013
	Amended And Restated Credit Agreement [Member]	Amended And Restated Credit Agreement [Member]	Amended And Restated Credit Agreement [Member]	Standby Letters Of Credit [Member]	Silicon Valley Bank [Member]	Silicon Valley Bank [Member]	Silicon Valley Bank [Member]
						Standby Letters Of Credit [Member]	Standby Letters Of Credit [Member]
Line of Credit Facility [Line Items]	'	'	'	'	'	'	'
Line of credit	$150,000,000	'	$150,000,000	'	'	'	'
Line of credit, percentage of annual fee	0.50%	'	'	'	'	'	'
Loan agreement, interest rate at period end	4.25%	4.25%	'	'	'	'	'
Commitment fee	'	430,000	'	'	'	'	'
Line of credit facility, one-time arrangement fee percentage	'	'	'	'	0.30%	'	'
Line of credit facility, annual administration fee paid	'	'	'	'	45,000	'	'
Letter of credit, issued	'	'	'	'	'	3,900,000	15,000,000
Letter of credit, outstanding amount	'	'	'	18,900,000	'	'	'
Available credit facility	$131,100,000	'	'	'	'	'	'

Income_Taxes_Additional_inform

Income Taxes - Additional information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Provision for income taxes	$19	$132	$31	$134

Stock_Based_Compensation_Expen

Stock Based Compensation Expense Included in Condensed Consolidated Statements of Income (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$2,333	$959	$4,257	$1,737
Marketing Expenses [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	266	106	499	198
Technology And Development [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	787	296	1,406	522
Customer Service And Operations [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	209	107	402	184
General And Administrative Expense [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation expense	$1,071	$450	$1,950	$833

Weighted_Average_Grant_Date_Fa

Weighted Average Grant Date Fair Value of Options (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'	'
Weighted-average grant date fair value of options granted	$7.99	$8.98	$11.71	$8.98

Weighted_Average_Assumptions_f

Weighted Average Assumptions for Options Granted (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Risk-free interest rate	1.67%	1.02%	2.03%	1.02%
Employee Stock Option [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Expected term (in years)	'5 years 7 months 6 days	'6 years 2 months 12 days	'6 years 2 months 12 days	'6 years 2 months 12 days
Volatility rate	36.00%	44.00%	43.00%	44.00%

Stock_Option_Activity_Detail

Stock Option Activity (Detail) (USD $)	6 Months Ended
	Jun. 30, 2014
Options Outstanding	'
Outstanding at beginning of period	6,045,912
Granted	1,277,572
Exercised	-517,146
Forfeited and cancelled	-64,620
Outstanding at end of period	6,741,718
Weighted average exercise price	'
Outstanding at beginning of period	$7.72
Granted	$26.20
Exercised	$3.43
Forfeited and cancelled	$19.07
Outstanding at end of period	$11.44
Options Exercisable	'
Outstanding at beginning of period	3,195,701
Outstanding at end of period	3,433,826
Exercisable Weighted Average Exercise Price per Share	'
Outstanding at beginning of period	$3.64
Outstanding at end of period	$5.50

Stock_Option_Activity_and_Rela

Stock Option Activity and Related Information (Detail) (USD $)	0 Months Ended		3 Months Ended		6 Months Ended			0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014
								Employee Stock Option [Member]
Exercisable Weighted Average Exercise Price per Share	'	'	'	'	'	'	'	'
Options vested and expected to vest	'	'	6,671,244	'	6,671,244	'	5,988,706	'
Options vested and expected to vest, weighted average exercise price	'	'	$11.36	'	$11.36	'	$7.67	'
Options vested and expected to vest, weighted average remaining contractual life	'6 years 10 months 24 days	'6 years 7 months 6 days	'	'	'	'	'	'
Options outstanding, aggregate intrinsic value	'	'	$101,800,000	'	$101,800,000	'	'	'
Options exercisable, aggregate intrinsic value	'	'	71,600,000	'	71,600,000	'	'	'
Total intrinsic value of options exercised	'	'	3,600,000	807,000	11,400,000	4,000,000	'	'
Unrecognized compensation expense	'	'	'	'	'	'	'	$23,400,000
Unrecognized compensation expense expected to be recognized, Weighted-average period	'	'	'	'	'	'	'	'2 years 7 months 6 days

Summary_of_RSU_Activity_Detail

Summary of RSU Activity (Detail) (Restricted Stock Units R S U [Member], USD $)	6 Months Ended
	Jun. 30, 2014
Restricted Stock Units R S U [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock base awards, vesting period	'4 years
Outstanding RSUs, Shares	'
Granted	258,895
Forfeited and cancelled	-16,250
Ending Balance	242,645
Outstanding RSUs, Weighted-Average Grant Date Fair Value	'
Granted	$19.41
Forfeited and cancelled	$24.54
Ending balance	$19.07

Summary_of_RSU_Unrecognized_Co

Summary of RSU Unrecognized Compensation Expense (Detail) (Restricted Stock Units R S U [Member], USD $)	0 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
Restricted Stock Units R S U [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unrecognized compensation expense	$4
Unrecognized compensation expense expected to be recognized, Weighted-average period	'2 years 6 months

Earnings_Per_Share_Detail

Earnings Per Share (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Basic earnings per share:	'	'	'	'
Net income	$1,398	$4,090	$1,750	$4,011
Weighted-average common shares	38,102	32,974	37,952	26,046
Basic earnings per share	$0.04	$0.12	$0.05	$0.15
Diluted earnings per share:	'	'	'	'
Net income	$1,398	$4,090	$1,750	$4,011
Weighted-average common shares	38,102	32,974	37,952	26,046
Weighted-average shares from convertible preferred stock	'	'	'	5,331
Weighted-average dilutive stock options and RSUs	3,432	4,289	3,632	4,481
Effect of dilutive securities	'	'	'	7
Contingent stock due to acquisition	88	'	83	'
Weighted-average common shares and equivalents	41,622	37,263	41,667	35,865
Diluted earnings per share	$0.03	$0.11	$0.04	$0.11

Securities_Excluded_from_Calcu

Securities Excluded from Calculation of Diluted Net Earnings Per Share (Detail)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Common stock equivalents	1,979	349	1,946	355
Employee Stock Option [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Common stock equivalents	1,947	349	1,911	355
Restricted Stock Units R S U [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Common stock equivalents	32	'	35	'