LendingClub (LC) 10-K27 Feb 152014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2014	Feb. 25, 2015	Dec. 11, 2014
Document Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	ck0001409970
Entity Registrant Name	LENDINGCLUB CORP
Entity Central Index Key	1409970
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		371,991,134
Entity Public Float			$4,873,900,000

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$869,780	$49,299
Restricted cash	46,763	12,208
Loans at fair value (includes $1,772,407 and $1,158,302 from consolidated Trust, respectively)	2,798,505	1,829,042
Accrued interest receivable (includes $15,209 and $10,061 from consolidated Trust, respectively)	24,262	15,975
Property, equipment and software, net	27,051	12,595
Intangible assets, net	36,302
Goodwill	72,592
Other assets	14,332	23,921
Due from related parties	467	355
Total assets	3,890,054	1,943,395
Liabilities
Accounts payable	5,892	4,524
Accrued interest payable (includes $16,989 and $11,176 from consolidated Trust, respectively)	26,964	17,741
Accrued expenses and other liabilities	31,620	9,128
Payable to investors	38,741	3,918
Notes and certificates, at fair value (includes $1,772,407 and $1,158,302 from consolidated Trust, respectively)	2,813,618	1,839,990
Total liabilities	2,916,835	1,875,301
Commitments and contingencies (see Note 14 - Commitments and Contingencies)
Stockholders' Equity
Preferred stock		103,244
Common stock, $0.01 par value; 900,000,000 and 360,000,000 shares authorized at December 31, 2014 and December 31, 2013, respectively; 371,443,916 and 54,986,640 shares issued and outstanding at December 31, 2014 and December 31, 2013, respectively	3,714	138
Additional paid-in capital	1,052,728	15,041
Accumulated deficit	-83,223	-50,329
Total stockholders' equity	973,219	68,094
Total liabilities and stockholders' equity	$3,890,054	$1,943,395

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Member Loans at fair value	$2,798,505	$1,829,042
Accrued interest receivable from consolidated Trust	24,262	15,975
Accrued interest payable from consolidated Trust	26,964	17,741
Notes and certificates, at fair value from consolidated Trust	2,813,618	1,839,990
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	900,000,000	360,000,000
Common stock, shares issued	371,443,916	54,986,640
Common stock, shares outstanding	371,443,916	54,986,640
Consolidated Trust
Member Loans at fair value	1,772,407	1,158,302
Accrued interest receivable from consolidated Trust	15,209	10,061
Accrued interest payable from consolidated Trust	16,989	11,176
Notes and certificates, at fair value from consolidated Trust	$1,772,407	$1,158,302

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Operating revenue
Transaction fees	$26,013	$197,124	$85,830
Servicing fees	1,474	11,534	3,951
Management fees	720	5,957	3,083
Other revenue (expense)	720	-1,203	5,111
Total operating revenue	28,927	213,412	97,975
Net interest income (expense):
Total interest income	56,861	354,453	187,507
Total interest expense	-56,642	-356,615	-187,447
Net interest income (expense)	219	-2,162	60
Benefit for losses on loans at amortized cost	42
Fair value adjustments, loans	-18,775	-124,602	-57,629
Fair value adjustments, notes and certificates	18,180	124,480	57,596
Net interest income (expense) after loss provision and fair value adjustments	-334	-2,284	27
Total net revenue	28,593	211,128	98,002
Operating expenses:
Sales and marketing	14,723	87,278	39,037
Origination and servicing	6,134	38,286	17,217
General and administrative	11,974	117,068	34,440
Total operating expenses	32,831	242,632	90,694
Income (loss) before income taxes	-4,238	-31,504	7,308
Income tax expense		1,390
Net income (loss)	($4,238)	($32,894)	$7,308
Basic net loss per share attributable to common stockholders	($0.10)	($0.44)	$0
Diluted net loss per share attributable to common stockholders	($0.10)	($0.44)	$0
Weighted-average common shares - Basic	41,359,676	75,573,742	51,557,136
Weighted-average common shares - Diluted	41,359,676	75,573,742	81,426,976

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Series A Convertible Preferred Stock	Series B Convertible Preferred Stock	Series E Convertible Preferred Stock	Series F Convertible Preferred Stock	Convertible Preferred stock	Convertible Preferred stock	Convertible Preferred stock	Convertible Preferred stock	Convertible Preferred stock	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit
	Total	Series A Convertible Preferred Stock	Series B Convertible Preferred Stock	Series E Convertible Preferred Stock	Series F Convertible Preferred Stock	Convertible Preferred stock	Series A Convertible Preferred Stock	Series B Convertible Preferred Stock	Series E Convertible Preferred Stock	Series F Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Series B Convertible Preferred Stock	Treasury Stock	Accumulated Deficit
Beginning Balances at Dec. 31, 2011
Issuance convertible preferred stock for cash net of issuance costs				$17,344,000					$17,344,000
Issuance convertible preferred stock for cash net of issuance costs (in shares)									10,000,000
Ending Balances at Dec. 31, 2012						103,023,000
Ending Balances (in shares) at Dec. 31, 2012						239,365,432
Beginning Balances at Mar. 31, 2012	36,337,000					84,806,000					91,000	4,839,000			-53,399,000
Beginning Balances (in shares) at Mar. 31, 2012						225,661,228					36,444,984
Exercise of warrants to purchase convertible preferred stock (in Shares)							2,272,292	1,431,912
Exercise of warrants to purchase convertible preferred stock		606,000	165,000				606,000	267,000					-102,000
Exercise of warrants to purchase common stock (in shares)											86,752
Exercise of warrants to purchase common stock	34,000										10,000	24,000
Stock-based compensation	1,110,000											1,110,000
Issuance of common stock upon exercise of options (in shares)	8,635,712										8,635,712
Issuance of common stock upon exercise of options	864,000										22,000	842,000
Other (in shares)														-70,560
Other	-12,000													-12,000
Net income	-4,238,000														-4,238,000
Ending Balances at Dec. 31, 2012	52,210,000					103,023,000					123,000	6,713,000		-12,000	-57,637,000
Ending Balances (in shares) at Dec. 31, 2012						239,365,432					45,167,448			-70,560
Exercise of warrants to purchase convertible preferred stock (in Shares)							829,356
Exercise of warrants to purchase convertible preferred stock		221,000					221,000
Exercise of warrants to purchase common stock (in shares)											957,876
Exercise of warrants to purchase common stock	150,000										2,000	148,000
Stock-based compensation	6,490,000											6,490,000
Issuance of common stock upon exercise of options (in shares)	8,931,876										8,931,876
Issuance of common stock upon exercise of options	1,715,000										23,000	1,692,000
Other (in shares)											-70,560			70,560
Other											-10,000	-2,000		12,000
Net income	7,308,000														7,308,000
Ending Balances at Dec. 31, 2013	68,094,000					103,244,000					138,000	15,041,000			-50,329,000
Ending Balances (in shares) at Dec. 31, 2013						240,194,788					54,986,640
Exercise of warrants to purchase convertible preferred stock (in Shares)							572,161
Exercise of warrants to purchase convertible preferred stock		66,000					66,000
Exercise of warrants to purchase common stock (in shares)											1,818,174
Exercise of warrants to purchase common stock	512,000										18,000	494,000
Stock-based compensation	39,024,000					9,176,000						29,848,000
Issuance of common stock upon exercise of options (in shares)	6,037,666										6,037,667
Issuance of common stock upon exercise of options	3,564,000										60,000	3,504,000
Issuance convertible preferred stock for cash net of issuance costs	827,680,000				64,803,000					64,803,000	590,000	827,090,000
Issuance convertible preferred stock for cash net of issuance costs (in shares)					6,390,556					6,390,556	59,000,000
Conversion of preferred stock to common stock upon initial public offering						-180,051,000					2,496,000	177,555,000
Conversion of preferred stock to common stock upon initial public offering (in shares)						-249,601,435					249,601,435
Early exercise liability related to unvested stock options	-392,000											-392,000
Par value adjustment for stock splits											412,000	-412,000
Net income	-32,894,000														-32,894,000
Issuance of Series F convertible preferred stock for the acquisition of Springstone (in shares)										2,443,930
Issuance of Series F convertible preferred stock for the acquisition of Springstone					2,762,000					2,762,000
Ending Balances at Dec. 31, 2014	$973,219,000										$3,714,000	$1,052,728,000			($83,223,000)
Ending Balances (in shares) at Dec. 31, 2014											371,443,916

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net (loss) income	($4,238)	($32,894)	$7,308
Adjustments to reconcile net income to net cash provided by operating activities:
Benefit for loan losses	-42
Fair value adjustments of loans, notes and certificates, net	595	122	33
Change in loan servicing liability carried at fair value		3,037	936
Change in loan servicing asset carried at fair value		-1,647	-534
Stock-based compensation and warrant expense, net	1,110	37,150	6,490
Depreciation and amortization	236	10,258	1,663
Loss (gain) on sales of loans at fair value	-329	3,569	-3,862
Other, net	-118	198
Loss on disposal of property, equipment and software		553	30
Purchase of whole loans sold at fair value	-9,290	-1,733,614	-442,362
Proceeds from sales of whole loans at fair value	9,619	1,730,045	446,224
Net change in operating assets and liabilities excluding the effects of the acquisition:
Accrued interest receivable	-3,170	-8,287	-10,454
Other assets	-649	13,270	-21,021
Due from related parties	-75	-112	-240
Accounts payable	330	2,357	1,788
Accrued interest payable	4,070	9,223	11,063
Accrued expenses and other liabilities	1,558	16,692	4,077
Net cash provided by (used in) operating activities	-393	49,920	1,139
Cash flows from investing activities:
Purchase of loans at fair value	-598,622	-2,156,382	-1,618,404
Principal payments of loans at fair value	160,787	1,054,357	511,232
Principal payments of loans at amortized cost	345
Proceeds from recoveries and sales of charged-off loans at fair value	247	7,960	1,716
Proceeds from recoveries and sales of charged-off loans at amortized cost	22
Payments for business acquisition, net of cash acquired		-109,464
Net change in restricted cash	-2,622	-32,974	-4,724
Purchase of property, equipment and software	-1,302	-20,572	-10,435
Net cash used in investing activities	-441,145	-1,257,075	-1,120,615
Cash flows from financing activities:
Change in payable to investors	1,517	34,308	1,868
Proceeds from issuance of notes and certificates	606,862	2,156,019	1,618,269
Payments on notes and certificates	-163,946	-1,049,982	-504,330
Payments on charged-off notes and certificates from recoveries/sales of related charged off loans at fair value	-219	-7,929	-1,669
Proceeds from term loan, net of debt discount		49,813
Payment for debt issuance cost		-1,218
Principal payments on term loan		-50,000
Payments on loans payable	-370
Proceeds from initial public offering, net of offering costs		827,680
Proceeds from stock options exercised	864	3,564	1,715
Repurchase of common stock	-12
Net cash provided by financing activities	462,845	2,027,636	1,116,224
Net increase (decrease) in cash and cash equivalents	21,307	820,481	-3,252
Cash and cash equivalents, beginning of period	31,244	49,299	52,551
Cash and cash equivalents, end of period	52,551	869,780	49,299
Supplemental disclosure of cash flow information:
Cash paid for interest	52,511	345,919	176,195
Non-cash investing activity - Reclassification of loans at amortized cost to loans held at fair value	2,109
Non-cash investing activity - Accrual of property, equipment and software, net		832	2,275
Non-cash investing and financing activity - Issuance of Series F convertible preferred stock for business acquisition		2,762
Non-cash financing activity - Conversion of preferred stock to common stock		180,051
Non-cash financing activity - Accrual of prepaid offering costs		2,688
Series E Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from issuance of convertible preferred stock, net of issuance costs	17,344
Series F Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from issuance of convertible preferred stock, net of issuance costs		64,803
Series A and B Preferred Stock
Cash flows from financing activities:
Proceeds from exercise of warrants	771	66	221
Common stock warrants
Cash flows from financing activities:
Proceeds from exercise of warrants	34	512	150
Supplemental disclosure of cash flow information:
Non-cash financing activity - Exercise of warrants to purchase common stock		147	137
Series B convertible preferred stock
Supplemental disclosure of cash flow information:
Non-cash financing activity - Exercise of warrants to purchase common stock	$102

Basis_of_Presentation

Basis of Presentation	12 Months Ended
	Dec. 31, 2014
Basis of Presentation	1. Basis of Presentation
	Our consolidated financial statements include LendingClub Corporation and its wholly owned subsidiaries. Intercompany balances and transactions have been eliminated. The accompanying consolidated financial statements have been prepared by Lending Club in conformity with U.S. generally accepted accounting principles (“GAAP”) for financial information.
	We did not have any items of other comprehensive income (loss) during any of the periods presented in the consolidated financial statements and therefore, we are not required to report comprehensive income (loss).
	The following changes in application of accounting principles, methodologies or business practices affect our financial statements as of December 31, 2014, 2013 or 2012.

		•	On December 19, 2012, our board of directors approved a change in our fiscal year-end from March 31 to December 31. The change was effective as of December 31, 2012.

		•	Subsequent to the issuance of our December 31, 2012 consolidated financial statements, we corrected the classification of our preferred stock from temporary equity to permanent stockholders’ equity in accordance with GAAP requirements. This revision resulted in a change to stockholders’ deficit from $50.8 million to stockholders’ equity of $52.2 million as of December 31, 2012 and had no effect on our consolidated statements of operations, reported assets and liabilities on the consolidated balance sheet, or the consolidated statements of cash flows.

		•	During the year ended December 31, 2013, we changed our definitions used to classify operating expenses from sales, marketing and customer service, engineering, and general and administrative to sales and marketing, origination and servicing, and general and administrative. As a result of the new classification, loan origination and servicing costs which were previously included in sales, marketing and customer service are now included as a separate financial statement line and engineering costs which represent engineering and product development related expenses are categorized within general and administrative expenses. The changes had no impact on the total operating expenses or net income. Prior period amounts have been reclassified to conform to the current presentation.

		•	On April 15, 2014, a 2-for-1 equity stock split approved by our board of directors became effective, in which each outstanding share of each series or class of equity capital stock was split into two outstanding shares of such series or class of equity capital stock. Additionally, another 2-for-1 equity stock split approved by our board of directors became effective on September 5, 2014, in which each outstanding share of each series or class of equity capital stock was split into two outstanding shares of such series or class of equity capital stock. All share and per share data has been adjusted to reflect these stock splits. The par value of each of the outstanding shares remains the same at $0.01.

		•	On April 17, 2014, we acquired all the outstanding limited liability company interests of Springstone Financial, LLC (Springstone). Our consolidated financial statements include Springstone’s results of operations, statement of financial position, and statement of cash flows from this date (see Note 17 – Springstone Acquisition).

		•	On December 11, 2014, we completed our initial public offering (IPO) and registered 66,700,000 shares of our common stock at $15.00 per share for an aggregate offering price of approximately $1.0 billion.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies
	Revenue Recognition
	Transaction Fee Revenue: Transaction fees are paid by issuing banks or service providers to us for the work we perform through our platform and Springstone’s platform. The amount of these fees is based upon the terms of the loan, including grade, rate, term and other factors. Where applicable, the transaction fees are included in the annual percentage rate calculation provided to the borrower and are subtracted from the gross loan proceeds distributed to the borrower. Our policy is to recognize transaction fee revenue subject to refunds because we can estimate refunds based on our refund experience. We record transaction fee revenue net of refunds at the origination of a loan by an issuing bank.
	Servicing Fees: Note investors, certain certificate holders and whole loan purchasers typically pay us a servicing fee on each payment received from a borrower or on the investors’ month-end principal balance of loans serviced. The servicing fee compensates us for services rendered related to managing payments from borrowers and to investors and maintaining investors’ account portfolios. We record servicing fees as a component of operating revenue when received. Servicing fees can be, and have been, modified or waived at management’s discretion.

	Management Fees: Qualified investors can invest in investment funds managed by LC Advisors, LLC (LCA), a registered investment advisor that acts as the general partner for certain private funds and advisor to separately managed accounts. LCA charges limited partners in the investment funds a management fee payable monthly in arrears, based on a limited partner’s capital account balance at month end. LCA also earns management fees on SMAs, payable monthly in arrears, based on the month-end balances in the SMA accounts. Management fees are a component of operating revenue in the consolidated statements of operations and are recorded as earned. Management fees can be, and have been, modified or waived at the discretion of LCA.
	Other Revenue (Expense): Other revenue (expense) consists primarily of gains and losses on sales of whole loans and referral revenue earned from partner companies when customers referred by us complete specified actions with them.
	Whole Loan Sales
	Under loan sale agreements, we sell all of our right, title and interest in the loan. At the time of such sales, we simultaneously enter into loan service agreements under which we acquire the right to service the loans. We calculate a gain or loss on the whole loan sale, including the acquisition of servicing rights, based on the net proceeds from the whole loan sale, minus the net investment in the loans being sold. The net investment in the loans sold has been reduced or increased by applicable servicing asset or liability respectively. Gains and losses on whole loan sales previously reported in “Gain from sales of member loans” were reclassified to “Other revenue (expense)” in the consolidated statements of operations.
	Additionally, as needed, we will record a liability for significant estimated post-sale obligations or contingent obligations to the purchasers of the loans.
	From January 1, 2013 through June 30, 2013, transaction fees and direct loan origination and acquisition costs for loans that were sold to independent third-party purchasers and met the accounting requirements for a sale were deferred and included in the overall net investment in the loans purchased. Accordingly, the transaction fees for such loans were not included in transaction fee revenue and the direct loan origination costs for such loans were not included in operating expenses. A gain or loss on the whole loan sales was recorded on the sale date in “Gain from sales of member loans”.
	Effective July 1, 2013, we elected the fair value option for whole loans acquired and subsequently sold to independent third-party purchasers. Under this election, all transaction fees and all direct costs incurred in the origination process are recognized in earnings as earned or incurred and are not deferred. As such, beginning July 1, 2013, transaction fees for whole loans sold to independent third-party purchasers are included in “Transaction fees” and direct loan origination costs are included in “Origination and servicing” operating expense in the consolidated statement of operations. Gains and losses from whole loan sales are recorded in “Other revenue (expense)” in the consolidated statements of operations.
	Cash and Cash Equivalents
	Cash and cash equivalents include unrestricted deposits with financial institutions in checking, money market and short-term certificate of deposit accounts. We consider all highly liquid investments with stated maturity dates of three months or less from the date of purchase to be cash equivalents.
	Restricted Cash
	Restricted cash consists primarily of certain checking, money market and certificate of deposit accounts that are: (i) pledged to or held in escrow by our correspondent banks as security for transactions processed on or related to our platform; (ii) pledged through a credit support agreement with a certificate holder or (iii) received from investors but not yet applied to their accounts on the platform and transferred to segregated bank accounts that hold investors’ funds.
	Fair Value of Assets and Liabilities
	We record loans, notes and certificates and servicing assets and liabilities at fair value on a recurring basis. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.
	The fair value hierarchy requires that an entity maximize the use of observable inputs when estimating fair value. The fair value hierarchy includes the following three-level classification which is based on the market observability of the inputs used for estimating the fair value of the assets or liabilities being measured:


	Level 1		—		Quoted market prices in active markets for identical assets or liabilities.

	Level 2		—		Significant other observable inputs (e.g., quoted prices for similar items in active markets, quoted prices for identical or similar items in markets that are not active, inputs other than quoted prices that are observable such as interest rate and yield curves, and market-corroborated inputs).
	Level 3		—		Inputs that are unobservable in the market but reflective of the types of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow methodologies or similar techniques. We utilize discounted cash flow valuation techniques based on our estimate of future cash flows that are expected to occur over the life of a financial instrument.
	In accordance with applicable accounting guidance, we disclose significant unobservable inputs used in estimating fair value of the Level 3 assets and liabilities. We consider unobservable inputs to be significant, if by their exclusion, the estimate fair value of a Level 3 asset or liability would be impacted by a significant percentage change, or based on qualitative factors such as the nature of the instrument and significance of the unobservable inputs relative to other inputs used within the valuation.
	Loans, Notes and Certificates at Fair Value
	The fair value election for loans, notes and certificates allows for symmetrical accounting of the timing and amounts recognized for both expected unrealized losses and charge-offs on the loans and the related notes and certificates, consistent with the member payment dependent design of the notes and certificates. Changes in the fair value of loans, notes and certificates are recorded in fair value adjustments in the period of the fair value changes.
	Significant assumptions used in valuing our loans, notes and certificates are as follows:
	Discount rates – The discount rates reflect our estimates of the rates of return that investors in unsecured consumer credit obligations would require when investing in the various credit grades of loans. The discount rates for the projected net cash flows of the notes and certificates reflects our estimates of the rates of return, including risk premiums that investors in unsecured consumer credit obligations would require when investing in notes issued by us and certificates issued by the Trust, an independent Delaware business trust that acquires and holds loans for the sole benefit of certificate investors, with cash flows dependent on specific grades of loans. Discount rates for existing loans, notes and certificates are adjusted to reflect the time value of money and a risk premium to reflect the amount of compensation market participants require due to the credit and liquidity related uncertainty inherent in the instruments’ cash flows.
	Net cumulative expected losses – Net cumulative expected losses are an estimate of the net cumulative principal payments that will not be repaid over the entire life of a loan, note or certificate, expressed as a percentage of the original principal amount of the loan, note or certificate. The estimated net cumulative loss is the sum of the net losses estimated to occur each month of the life of a new loan, note or certificate. Therefore, the total net losses estimated to occur over the remaining maturity of existing loans, notes and certificates are less than the estimated net cumulative losses of comparable new loans, notes and certificates. A given month’s estimated net losses are a function of two variables:

		(i)	estimated default rate, which is an estimate of the probability of not collecting the remaining contractual principal amounts owed and,

		(ii)	estimated net loss severity, which is the percentage of contractual principal cash flows lost in the event of a default, net of the average net recovery, expected to be received on a defaulted loan, note or certificate.
	Our and the Trust’s obligation to pay principal and interest on any note or certificate, as applicable, is equal to the pro-rata portion of the payments, if any, received on the related loan subject to applicable fees. The gross effective interest rate associated with notes or certificates is the same as the interest rate earned on the underlying loan. Payments to holders of notes and certificates depends on the payments received on loans, a reduction or increase of the expected future payments on loans will decrease or increase the estimated fair values of the related notes and certificates. Expected losses and actual charge-offs on loans are offset to the extent that the loans are financed by notes and certificates that effectively absorb the related loan losses.
	Servicing Assets and Liabilities at Fair Value
	We record servicing assets and liabilities at their estimated fair values when we sell whole loans to independent third-parties or whole loan buyers or when the servicing contract commences. The gain or loss on a loan sale is recorded in other revenue (expense) in the consolidated statements of operations while the component of the gain or loss that is based on the degree to which the contractual loan servicing fee is above or below an estimated market rate loan servicing fee is recorded as an offset in servicing assets or liabilities. Servicing assets and liabilities are recorded in “Other Assets” and “Accrued Expenses and Other Liabilities,” respectively, on the consolidated balance sheets. Over the life of the loan, changes in the estimated fair value of servicing assets and liabilities are reported in “Servicing Fees” in the consolidated statement of operations in the period in which the changes occur.
	We use a discounted cash flow model to estimate the fair value of the loan servicing asset or liability which considers the contractual servicing fee revenue we earn on the loans, estimated market rate servicing fee to service such loans, the current principal balances of the loans and projected servicing revenues over the remaining terms of the loans.

	Significant assumptions used in valuing our servicing assets and liabilities are as follows:
	Market servicing rates – We estimate adequate servicing compensation rates as those which a market participant would require to service the loans that we sell to, or that are acquired, by third parties. We estimated these market servicing rates based on observable market servicing rates for other loan types in the industry, adjusted for the unique loan attributes of the loans we sell and service (i.e. unsecured fixed rate fully amortizing loans, ACH loan payments, intermediate terms, prime credit grades and sizes) and with a market servicing benchmarking analysis performed by a third-party valuation firm.
	Discount rates – The discount rates for loan servicing rights reflect our estimates of the rates of return that investors in servicing rights for unsecured consumer credit obligations would require when investing in similar servicing rights. Discount rates for servicing rights on existing loans are adjusted to reflect the time value of money and a risk premium intended to reflect the amount of compensation market participants would require due to the credit and liquidity uncertainty inherent in the instruments’ cash flows.
	Net cumulative expected losses – Net cumulative expected losses are an estimate of the net cumulative principal payments that will not be repaid over the entire life of a loan expressed as a percentage of the original principal amount of the loan. The assumption regarding net cumulative losses reduces the projected balances and expected terms of the loans, which are used to project future servicing revenues. The estimated net cumulative loss is the sum of the net losses estimated to occur each month of the life of a new loan. A given month’s estimated net losses are a function of two variables:

		(i)	estimated default rate, which is an estimate of the probability of not collecting the remaining contractual principal amounts owed and,

		(ii)	estimated net loss severity, which is the percentage of contractual principal cash flows lost in the event of a default, net of the average net recovery, expected to be received on a defaulted loan.
	Cumulative prepayments – Cumulative prepayments are estimates of the cumulative amount of principal prepayments that will occur over the entire life of a loan expressed as a percentage of the original principal amount of the loan. The assumption regarding cumulative prepayments reduces the projected balances and expected terms of the loans, which are used to project future servicing revenues. Assumptions regarding cumulative prepayments are incorporated into the valuation process to estimate the fair value of loan servicing assets and liabilities as they are key valuation assumptions used by investors in servicing rights for unsecured consumer credit obligations.
	Financial Instruments Not Recorded at Fair Value
	Following are descriptions of the valuation methodologies used for estimating the fair values of financial instruments not recorded at fair value on a recurring basis in the consolidated balance sheets; these financial instruments are carried at historical cost or amortized cost in the consolidated balance sheets.

		•		Short-term financial assets: Short-term financial assets include cash and cash equivalents, restricted cash and accrued interest. These assets are carried at historical cost.

		•		Short-term financial liabilities: Short-term financial liabilities include accounts payable, accrued interest payable and payables to investors. These liabilities are carried at historical cost.
	Accrued Interest and Other Receivables
	Interest income on loans is calculated based on the contractual interest rate of the loan and recorded as interest income as earned. Loans are placed on non-accrual status upon reaching 120 days past due. When a loan is placed on non-accrual status, we stop accruing interest and reverse all accrued but unpaid interest as of such date.
	Property, Equipment and Software, net
	Property, equipment and software consists of internally developed and purchased software, computer equipment, leasehold improvements, furniture and fixtures and construction in process, which are recorded at cost, less accumulated depreciation and amortization.
	Computer equipment, purchased software and furniture and fixtures are depreciated or amortized on a straight line basis over two to five years. Leasehold improvements are amortized over the shorter of the lease term excluding renewal periods or the estimated useful life. Internally developed software is amortized on a straight line basis over the project’s estimated useful life, generally three years.
	Internally developed software is capitalized when preliminary development efforts are successfully completed and it is probable that the project will be completed and the software will be used as intended. Capitalized costs consist of salaries and payroll related costs for employees and fees paid to third-party consultants who are directly involved in development efforts. Costs related to preliminary project activities and post implementation activities including training and maintenance are expensed as incurred. Costs incurred for upgrades and enhancements that are considered to be probable to result in additional functionality are capitalized.

	We evaluate potential impairments of our long-lived assets whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. Events or changes in circumstances that could result in impairment include, but are not limited to, underperformance relative to historical or projected future operating results, significant changes in the manner of use of the assets or the strategy for our overall business and significant negative industry or economic trends. The determination of recoverability of long-lived assets is based on whether an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition exceed the net book value of the asset. If the long-lived asset is not recoverable, measurement of an impairment loss is based on the fair value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value.
	Consolidation Policies
Our policy is to consolidate the financial statements of entities in which we have a controlling financial interest. We determine whether we have a controlling financial interest in an entity by evaluating whether the entity is a voting interest entity or variable interest entity (“VIE”) and if the accounting guidance requires consolidation.
Our determination of whether we have a controlling financial interest in a voting interest entity is based on whether we have ownership of a majority of the entities’ voting equity interest directly or through control of management of the entities.
We determine whether we have a controlling financial interest in a VIE by considering whether our involvement with the VIE is significant and whether we are the primary beneficiary of the VIE based on the following:

	•		we have the power to direct the activities of the VIE that most significantly impact the entity’s economic performance;

	•		the aggregate indirect and direct variable interests held by us have the obligation to absorb losses or the right to receive benefits from the entity that could be significant to the VIE; and

	•		qualitative and quantitative factors regarding the nature, size, and form of our involvement with the VIE.
We believe our beneficial ownership of a controlling financial interest in the Trust qualifies as an equity investment in a VIE that results in consolidation of the Trust for financial accounting and reporting purposes. We perform on-going reassessments on the status of the entities and whether facts or circumstances have changed in relation to our involvement in VIEs which could cause our conclusion to change.
All intercompany transactions and balances have been eliminated.
Business Combination
We use our best estimates and assumptions to assign fair value to the tangible and intangible assets acquired and liabilities assumed at the acquisition date. Because our estimates are inherently uncertain and subject to refinement, we may record adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed, with the corresponding offset to goodwill during the one-year measurement period if information exists to indicate an estimate may change. In addition, uncertain tax positions and tax-related valuation allowances, if any, are initially established in connection with a business combination as of the acquisition date. We continue to collect information and reevaluate these estimates and assumptions quarterly and record any adjustments to our preliminary estimates to goodwill provided that we are within the measurement period. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to our consolidated statements of operations.
Goodwill and Intangible Assets
Goodwill represents the fair value of acquired businesses in excess of the aggregate fair value of the identified net assets acquired. Goodwill is not amortized but is tested for impairment annually or whenever indications of impairment exist. Our annual impairment testing date is April 1. We can elect to qualitatively assess goodwill for impairment if it is more likely than not that the fair value of a reporting unit (generally defined as a component of a business for which financial information is available and reviewed regularly by management) exceeds its carrying value. A qualitative assessment may consider macroeconomic and other industry-specific factors, such as trends in short-term and long-term interest rates and the ability to access capital or company-specific factors, such as market capitalization in excess of net assets, trends in revenue generating activities and merger or acquisition activity.
If we elect to bypass qualitatively assessing goodwill or it is not more likely than not that the fair value of a reporting unit exceeds its carrying value, we must estimate the fair values of our reporting units and compare them to their carrying values. Estimated fair value of a reporting unit is generally established using an income approach based on a discounted cash flow model or a market approach which compares each reporting unit to comparable companies in their respective industries.

Intangible assets are amortized over their useful lives in a manner that best reflects their economic benefit. Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. We do not have any indefinite-lived intangible assets.
Stock-based Compensation
Stock-based compensation includes the expense associated with stock options granted to employees and with the company’s employee stock purchase plan (ESPP), as well as expense associated with stock issued related to our acquisition of Springstone. All stock-based awards made to employees are recognized in the consolidated financial statements based on their respective grant date fair values. Any benefits of tax deductions in excess of recognized compensation cost are reported as a financing cash inflow and cash outflow from operating activities. The stock-based compensation related to awards that are expected to vest is amortized using the straight-line method over the award’s vesting term, which is generally four years.
The fair value of share option awards is estimated on the date of grant using the Black-Scholes option pricing model. The Black-Scholes option pricing model considers, among other factors, the underlying fair value of common stock, the expected term of the option award, expected volatility of our common stock and expected future dividends, if any.
Stock-based compensation expense for stock options is recorded net of estimated forfeitures, such that expense is recorded only for those stock-based awards that are expected to vest. Forfeitures of awards are estimated at the time of grant and revised in subsequent periods if actual forfeitures differ from initial estimates or if future forfeitures are expected to differ from recent actual or previously expected forfeitures.
Share option awards issued to non-employees are recorded at their fair value on the awards’ vesting date. We use the Black-Scholes option pricing model to estimate the fair value of share options granted to non-employees at each vesting date to determine the amount of stock-based compensation.
The fair value of stock purchase rights granted to employees under the ESPP is measured on the grant date using the Black-Scholes option pricing model. The compensation expense related to ESPP purchase rights is recognized on a straight-line basis over the requisite service period.
Income Taxes
We account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.
We recognize deferred tax assets to the extent that we believe these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we would be able to realize our deferred tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.
We account for uncertain tax positions using a two-step process whereby (i) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position (“more-likely-than-not recognition threshold”) and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority.
We recognize interest and penalties accrued on any unrecognized tax benefits as a component of provision for income tax in the consolidated statement of operations.
Use of Estimates
The preparation of our consolidated financial statements and related disclosures in conformity with GAAP requires management to make judgments, assumptions and estimates that affect the amounts reported in our consolidated financial statements and accompanying notes. We base our estimates on historical experience and on various other factors we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of certain assets and liabilities. These judgments, assumptions and estimates include but are not limited to the following: (i) fair value determinations for loans, notes and certificates; (ii) stock-based compensation expense; (iii) provision for income taxes, net of valuation allowance for deferred tax assets; (iv) consolidation of variable interest entities; (v) fair value determinations for servicing assets and liabilities; and (vi) reserves for contingencies. These judgments, estimates and assumptions are inherently subjective in nature and actual results may differ from these estimates and assumptions, and the differences could be material.

Impact of New Accounting Standards
In June 2014, the FASB issued guidance to clarify accounting for stock-based compensation awards that provide that a performance target could be achieved after the requisite service period, which is effective January 1, 2016. The guidance requires that a performance target that affects vesting, and is achievable after the requisite service period, be treated as a performance condition. We are currently evaluating the impact of this guidance on our consolidated financial statements, basic net income (loss) per share referred to as EPS, and related disclosures.
In May 2014, the FASB issued new guidance on revenue recognition, which is effective January 1, 2017. The guidance clarifies that revenue from contracts with customers should be recognized in a manner that depicts both the likelihood of payment and the timing of the related transfer of goods or performance of services. We are currently evaluating the impact of this new guidance on our consolidated financial statements, EPS and related disclosures.

Net_Income_Loss_Per_Share_and_

Net Income (Loss) Per Share and Net Income (Loss) Attributable to Common Stockholders	12 Months Ended
	Dec. 31, 2014
Net Income (Loss) Per Share and Net Income (Loss) Attributable to Common Stockholders	3. Net Income (Loss) Per Share and Net Income (Loss) Attributable to Common Stockholders
	EPS is the amount of net income (loss) available to each share of common stock outstanding during the reporting period. Diluted EPS is the amount of net income (loss) available to each share of common stock outstanding during the reporting period adjusted to include the effect of potentially dilutive common shares. Potentially dilutive common shares include incremental shares issued for stock options, convertible preferred stock (through December 11, 2014) and warrants to purchase common stock. Potentially dilutive common shares are excluded from the computation of dilutive EPS in periods in which the effect would be antidilutive.
	We calculate EPS using the two-class method when applicable. The two-class method allocates net income that otherwise would have been available to common shareholders to holders of participating securities. All participating securities are excluded from basic weighted-average common shares outstanding. Prior to our IPO, we considered all series of our convertible preferred stock to be participating securities due to their non-cumulative dividend rights. As such, net income or loss allocated to these participating securities, which included participation rights in undistributed earnings (see Note 11 – Stockholders Equity), was subtracted from net income or loss to determine total undistributed net income or loss to be allocated to common stockholders. In conjunction with our IPO, all of our convertible preferred stock converted to common stock and all warrants to purchase convertible preferred stock were converted to warrants to purchase common stock. As such, we had no participating securities as of December 31, 2014.
	The following table details the computation of the basic and diluted net income (loss) per share (in thousands, except share and per share data):


			Year Ended			Year Ended			9 Months Ended
			December 31,			December 31,			December 31,
			2014			2013			2012
	Net income (loss)		$	(32,894	)	$	7,308		$	(4,238	)
	Less: Net income allocated to participating securities (1)			—			(7,117	)		—

	Net income (loss) available to common stockholders		$	(32,894	)	$	191		$	(4,238	)

	Weighted average common shares - Basic			75,573,742			51,557,136			41,359,676
	Weighted average effect of dilutive securities:
	Stock Options			—			28,542,404			—
	Warrants						1,327,436			—

	Weighted average common shares - Diluted			75,573,742			81,426,976			41,359,676

	Basic net loss per share attributable to common stockholders		$	(0.44	)	$	0		$	(0.10	)
	Diluted net loss per share attributable to common stockholders		$	(0.44	)	$	0		$	(0.10	)

	-1	In a period with net income, both earnings and dividends (if any) are allocated to participating securities. In a period with a net loss, only dividends (if any) are allocated to participating securities.

Loans_Notes_and_Certificates_a

Loans, Notes and Certificates and Loan Servicing Rights	12 Months Ended
Loans, Notes and Certificates and Loan Servicing Rights	Dec. 31, 2014
Loans, Notes and Certificates and Loan Servicing Rights	4. Loans, Notes and Certificates and Loan Servicing Rights
	Loans, Notes and Certificates
	Our marketplace is where borrowers and investors engage in transactions relating to standard or custom program loans. We issue notes and the Trust issues certificates as a means to allow investors to invest in the associated loans.
	At December 31, 2014 and December 31, 2013, loans, notes and certificates measured at fair value on a recurring basis were as follows (in thousands):


		Loans						Notes and Certificates
	December 31,	2014			2013			2014			2013
	Aggregate principal balance outstanding	$	2,836,729		$	1,849,042		$	2,851,837		$	1,859,982
	Net fair value adjustments		(38,224	)		(20,000	)		(38,219	)		(19,992	)

	Fair value	$	2,798,505		$	1,829,042		$	2,813,618		$	1,839,990

	At December 31, 2014, loans underlying notes and certificates had original terms between 12 and 60 months, had monthly payments with fixed interest rates ranging from 5.79% to 29.90% and had maturity dates through December 2019. At December 31, 2013, outstanding loans underlying notes and certificates had original terms of 36 months or 60 months, had monthly payments with fixed interest rates ranging from 5.42% to 26.06% and had maturity dates through December 2018.
	At December 31, 2014, we had 1,797 loans that were 90 days or more past due (which includes non-accrual loans discussed below) or the borrower has filed for bankruptcy or is deceased; these loans had a total outstanding principal balance of $19.8 million, aggregate adverse fair value adjustments totaling $18.8 million and an aggregate fair value of $1.0 million. At December 31, 2013, we had 989 loans that were 90 days or more past due (which includes non-accrual loans discussed below) or the borrower has filed for bankruptcy or is deceased; these loans had a total outstanding principal balance of $10.2 million, aggregate adverse fair value adjustments totaling $9.1 million and an aggregate fair value of $1.1 million.
	We place loans on non-accrual status once they are 120 days past due. At December 31, 2014, we had 125 loans that were over 120 days past due and classified as non-accrual loans, with an aggregate outstanding principal balance of $1.4 million, aggregate adverse fair value adjustments totaling $1.3 million and an aggregate fair value of $0.1 million. At December 31, 2013, we had 111 loans that were over 120 days past due and classified as non-accrual loans, with an aggregate outstanding principal balance of $1.1 million, aggregate adverse fair value adjustments totaling $0.9 million and an aggregate fair value of $0.2 million.
	Loan Servicing Rights
	Servicing assets and liabilities related to retained servicing rights are recorded at fair value, when loans are sold, in “Other assets” and “Accrued expenses and other liabilities”, respectively. At December 31, 2014, loans that were facilitated and subsequently sold but for which we retained servicing rights had a total outstanding principal balance of $1,872.4 million, original terms between 12 and 60 months and had monthly payments with fixed interest rates ranging from 5.90% to 33.15% and maturity dates through December 2019. At December 31, 2013, loans underlying loan servicing rights had a total outstanding principal balance of $406.5 million, original terms between 36 months and 60 months and had monthly payments with fixed interest rates ranging from 6.00% to 26.06% and maturity dates through December 2018.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	12 Months Ended
Fair Value of Financial Instruments	Dec. 31, 2014
Fair Value of Financial Instruments	5. Fair Value of Financial Instruments
	Financial Instruments Recorded at Fair Value
	For a description of the fair value hierarchy and our fair value methodology, see “Note 2 – Summary of Significant Accounting Policies”. All of our financial instruments measured at fair value were classified as Level 3 for the years ended December 31, 2014 and 2013. We did not transfer any assets or liabilities in or out of Level 3 during the years ended 2014 or 2013.

	As our loans and related notes and certificates and loan servicing rights do not trade in an active market with readily observable prices, we use significant unobservable inputs to measure the fair value of these assets and liabilities. Accordingly, we classify them as Level 3 as follows (in thousands):



			Level 1 Inputs				Level 2 Inputs				Level 3 Inputs				Fair Value
	December 31, 2014
	Assets:
	Loans		$	—			$	—			$	2,798,505			$	2,798,505
	Servicing assets			—				—				2,181				2,181

	Total assets		$	—			$	—			$	2,800,686			$	2,800,686

	Liabilities:
	Notes and certificates		$	—			$	—			$	2,813,618			$	2,813,618
	Servicing liabilities			—				—				3,973				3,973

	Total liabilities		$	—			$	—			$	2,817,591			$	2,817,591

	December 31, 2013
	Assets:
	Loans		$	—			$	—			$	1,829,042			$	1,829,042
	Servicing assets			—				—				534				534

	Total assets		$	—			$	—			$	1,829,576			$	1,829,576

	Liabilities:
	Notes and certificates		$	—			$	—			$	1,839,990			$	1,839,990
	Servicing liabilities			—				—				936				936

	Total liabilities		$	—			$	—			$	1,840,926			$	1,840,926


	Financial instruments are categorized in the Level 3 valuation hierarchy based on the significance of unobservable factors in the overall fair value measurement. These fair value estimates may also include observable, actively quoted components derived from external sources. As a result, the realized and unrealized gains and losses for assets and liabilities within the Level 3 category may include changes in fair value that were attributable to both observable and unobservable inputs.

	Significant Unobservable Inputs

	The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at December 31, 2014 and December 31, 2013 (in thousands):



					Range of Inputs
	Year Ended December 31, 2014		Unobservable Input		Minimum				Maximum				Weighted
	Year Ended December 31, 2014		Unobservable Input		Minimum				Maximum				Average
	Loans, notes & certificates		Discount rates			5.2	%			17.4	%			10.1	%
			Net cumulative expected losses			0.3	%			22	%			10	%

	Servicing asset/liability		Discount rates			5.3	%			23.7	%			10.7	%
			Net cumulative expected losses			0.3	%			22	%			10.2	%
			Cumulative prepayments			16.5	%			26.7	%			20	%
			Market servicing rates (% per annum on unpaid principal balance)			0.5	%			0.7	%			0.5	%

					Range of Inputs
	Year Ended December 31, 2013		Unobservable Input		Minimum				Maximum				Weighted
	Year Ended December 31, 2013		Unobservable Input		Minimum				Maximum				Average
	Loans, notes & certificates		Discount rates			5.9	%			15.9	%			10.2	%
			Net cumulative expected losses			2.1	%			23.7	%			10.1	%

	Servicing asset/liability		Discount rates			6.1	%			15.9	%			10	%
			Net cumulative expected losses			2.1	%			23.7	%			9.6	%
			Market servicing rates (% per annum on unpaid principal balance)			0.4	%			0.4	%			0.4	%



At December 31, 2014, the discounted cash flow methodology used to estimate the note and certificates fair values uses the same projected net cash flows as their related loans. As demonstrated by the table below, the fair value adjustments for loans were largely offset by the fair value adjustments of the notes and certificates due to the member payment dependent design of the notes and certificates and because the principal balances of the loans were very close to the combined principal balances of the notes and certificates.

The following table presents additional information about Level 3 loans, notes and certificates measured at fair value on a recurring basis for the years ended December 31, 2014 and December 31, 2013 (in thousands):



		Loans				Notes and
		Loans				Certificates
Fair value at December 31, 2012		$	781,215			$	785,316
Purchases of loans			2,064,628				—
Issuances of notes and certificates			—				1,618,269
Whole loan sales			(446,224	)			—
Principal payments			(511,232	)			(504,330	)
Recoveries from sale and collection of charged-off loans			(1,716	)			(1,669	)

Carrying value before fair value adjustments			1,886,671				1,897,586
Fair value adjustments, included in net income (loss)			(57,629	)			(57,596	)

Fair value at December 31, 2013		$	1,829,042			$	1,839,990
Purchases of loans			3,886,427				—
Issuances of notes and certificates			—				2,156,019
Whole loan sales			(1,730,045	)			—
Principal payments			(1,054,357	)			(1,049,982	)
Recoveries from sale and collection of charged-off loans			(7,960	)			(7,929	)

Carrying value before fair value adjustments			2,923,107				2,938,098
Fair value adjustments, included in net income (loss)			(124,602	)			(124,480	)

Fair value at December 31, 2014		$	2,798,505			$	2,813,618


The following tables present additional information about Level 3 servicing assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2014 and December 31, 2013 (in thousands):



		Servicing				Servicing
		Assets				Liabilities
Fair value at December 31, 2012		$	—			$	—
Additions, included in Other revenue (expense)			587				1,273
Changes in fair value, included in Servicing fees			(53	)			(337	)

Fair value at December 31, 2013		$	534			$	936

Additions, included in Other revenue (expense)			2,152				5,721
Changes in fair value, included in Servicing fees			(1,264	)			(2,684	)

Total adjustments included in Net revenue			888				3,037
Additions, included in Deferred revenue			759				—

Fair value at December 31, 2014		$	2,181			$	3,973


Significant Recurring Level 3 Fair Value Asset and Liability Input Sensitivity

The majority of fair value adjustments included in net income (loss) are attributable to changes in estimated instrument-specific future credit losses. All fair valuation adjustments were related to Level 3 instruments for the years ended December 31, 2014 and 2013. A specific loan that is projected to have higher future default losses than previously estimated has lower expected future cash flows over its remaining life, which reduces its estimated fair value. Conversely, a specific loan that is projected to have lower future default losses than previously estimated has increased expected future cash flows over its remaining life, which increases its fair value.

Changes in the unobservable inputs discussed above may have a significant impact on the fair value of the loan, note or certificate or servicing asset or liability. Certain of these unobservable inputs will (in isolation) have a directionally consistent impact on the fair value of the instrument for a given change in that input. Alternatively, the fair value of the instrument may move in an opposite direction for a given change in another input. When multiple inputs are used within the valuation techniques for loans, notes, certificates or servicing assets or liabilities, a change in one input in a certain direction may be offset by an opposite change from another input.



Generally, changes in the net cumulative expected loss rates, prepayment rates and discount rates will have an immaterial impact on the fair value of loans, notes and certificates. Generally, changes in the net cumulative expected loss rates and discount rates have an immaterial impact on the fair value of loan servicing rights. Our selection of the most representative prepayment rates and market servicing rates for our products is inherently judgmental. We reviewed servicing rates for other assets and liabilities with detachable servicing rights and determined that market servicing rates on our products of 0.40% to 0.70% of outstanding principal is not inappropriate. Expected prepayments are based on analysis of actual prepayments experience of loans considering their various types, terms and credit grades. The table below shows the estimated impact on our estimated fair value of servicing assets and liabilities, calculated using different market servicing rates and different prepayment rates as of December 31, 2014 (in thousands, except percentages). The sensitivities related to market servicing rates and prepayment rates were not significant as of December 31, 2013.



December 31,		2014
		Servicing				Servicing
		Assets				Liabilities
Weighted average market servicing rate assumptions			0.5	%			0.5	%
Increase (decrease) in fair value from:
Servicing rate increase to 0.60%		($	915	)		$	1,416
Servicing rate decrease to 0.40%		$	965			($	1,366	)
Weighted average cumulative prepayment assumptions			20	%			20	%
Increase (decrease) in fair value from:
25% increase in cumulative prepayments		($	65	)		($	228	)
25% decrease in cumulative prepayments		$	67			$	231

Financial Instruments Not Recorded at Fair Value

At December 31, 2014 and 2013, the carrying amount of all assets and liabilities not recorded at fair value approximates fair value due to the short term nature of these assets and liabilities. Instruments to which this applies include: cash and cash equivalents, restricted cash, accrued interest receivable and payable, accounts payable, and payables to investors.

Property_Equipment_and_Softwar

Property, Equipment and Software, net	12 Months Ended
Property, Equipment and Software, net	Dec. 31, 2014
Property, Equipment and Software, net	6. Property, Equipment and Software, net
	Property, equipment and software consist of the following (in thousands):


	December 31,	2014			2013
	Internally developed software	$	16,023		$	4,188
	Computer equipment		7,929			4,019
	Leasehold improvements		4,802			2,700
	Purchased software		3,326			913
	Furniture and fixtures		2,405			836
	Construction in progress		549			1,978
	Other		—			26

	Total property, equipment and software		35,034			14,660
	Accumulated depreciation and amortization		(7,983	)		(2,065	)

	Property, equipment and software, net	$	27,051		$	12,595

	Depreciation and amortization expense on property, equipment and software for the years ended December 31, 2014 and 2013 and nine months ended December 31, 2012 was $6.4 million, $1.7 million and $0.2 million, respectively. For the year ended December 31, 2014 we recorded impairment expense of $0.5 million, included in general and administrative expense in the consolidated statements of operations, due to property, equipment and software no longer in use. Impairment expense for the year ended December 31, 2013 and the nine months ended December 31, 2012 was immaterial.

Other_Assets

Other Assets	12 Months Ended
Other Assets	Dec. 31, 2014
Other Assets	7. Other Assets
	Other assets consist of the following (in thousands):


	December 31,	2014		2013
	Prepaid expenses	$	6,807	$	3,546
	Deferred acquisition compensation		2,695		—
	Loan servicing assets at fair value		2,181		534
	Accounts receivable		1,744		439
	Deposits		657		193
	Receivable from investors		155		18,116
	Tenant improvement receivable		—		504
	Other		93		589

	Total other assets	$	14,332	$	23,921

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	12 Months Ended
Goodwill and Intangible Assets	Dec. 31, 2014
Goodwill and Intangible Assets	8. Goodwill and Intangible Assets
	Goodwill
	Goodwill consists of the following (in thousands):


	Balance at December 31, 2013	$	—
	Acquisition of Springstone		72,592

	Balance at December 31, 2014	$	72,592

	We did not record any goodwill in the year ended December 31, 2013 or the nine months ended December 31, 2012. During the year ended December 31, 2014, we recorded goodwill in conjunction with the acquisition of Springstone. We did not record any goodwill impairment expense for the year ended December 31, 2014.
	Intangible Assets
	Intangible assets as of December 31, 2014 are as follows (in thousands, except years):


		Gross		Accumulated			Net
		Carrying		Amortization			Carrying
		Value					Value
	Customer relationships	$	39,500	$	(3,700	)	$	35,800
	Technology		400		(93	)		307
	Brand name		300		(105	)		195

	Total intangible assets subject to amortization	$	40,200	$	(3,898	)	$	36,302

	We did not record any intangible assets for the year ended December 31, 2013 or the nine months ended December 31, 2012.
	The customer relationship intangible assets are being amortized on an accelerated basis over a 14 year period. The technology and brand name intangible assets are being amortized on a straight line basis over three and two years, respectively. The weighted-average amortization period for total intangibles is 13.8 years. Amortization expense associated with intangible assets for the year ended December 31, 2014 was $3.9 million. There was no amortization expense for either the year ended December 31, 2013 or the nine months ended December 31, 2012.

	The expected future amortization expense for intangible assets as of December 31, 2014 is as follows (in thousands):


	2015	$	5,286
	2016		4,801
	2017		4,286
	2018		3,871
	2019		3,499
	Thereafter		14,559

	Total	$	36,302

Accrued_Expenses_and_Other_Lia

Accrued Expenses and Other Liabilities	12 Months Ended
Accrued Expenses and Other Liabilities	Dec. 31, 2014
Accrued Expenses and Other Liabilities	9. Accrued Expenses and Other Liabilities
	Accrued expenses and other liabilities consist of the following (in thousands):


	December 31,	2014		2013
	Accrued compensation	$	13,659	$	5,243
	Accrued service fees		6,220		2,057
	Loan servicing liability at fair value		3,973		936
	Contingent liabilities		1,995		—
	Deferred rent		1,377		653
	Deferred tax liability		1,332		—
	Transaction fee refund reserve		828		—
	Deferred revenue		759		—
	Early stock option exercise		392		—
	Other		1,085		239

	Total accrued expenses and other liabilities	$	31,620	$	9,128

Longterm_Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2014
Long-term Debt	10. Long-term Debt
	On April 16, 2014, we entered into a credit and guaranty agreement under which several lenders made an aggregate $50.0 million Term Loan to us. In connection with our entry into the credit agreement, we entered into a pledge and security agreement with Morgan Stanley Senior Funding, Inc. as collateral agent. The Term Loan was outstanding for 245 days in 2014 because on December 17, 2014, we fully repaid the Term Loan. Consequently, our Term Loan was extinguished and removed from the balance sheet as of December 31, 2014. For the year ended December 31, 2014 we incurred interest expense on the Term Loan of $2.3 million which included debt issuance costs of $1.2 million, debt discount costs of $0.2 million and interest expense of $0.9 million. This interest expense is included in “total interest expense” in the consolidated statements of operations. The weighted-average interest rate on the Term Loan was 2.59% for the loan outstanding period in 2014.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 31, 2014
Stockholders' Equity	11. Stockholders’ Equity
	Initial Public Offering (in thousands, except share and per share amounts)
	In December 2014, we closed our initial public offering, referred to as our IPO, of 66,700,000 shares of common stock including shares registered to cover an option to purchase additional shares that we granted to the underwriters of our initial public offering and selling shareholders. The public offering price of the shares sold in the offering was $15.00 per share. We did not receive any proceeds from the sales of shares by the selling stockholders. The total gross proceeds from the offering was $1.0 billion. After deducting underwriting discounts and commissions, offering expenses and proceeds to the selling shareholders, the aggregate net proceeds totaled approximately $827.7 million.

	Convertible Preferred Stock

	As of December 31, 2013, we had shares of preferred stock authorized and outstanding as follows (in thousands, except share and per share amounts):



		Designated Shares		Issued and		Aggregate Liquidation		Amount
		Designated Shares		Outstanding Shares		Preference		Amount
	Series A		68,025,100		66,100,340	$	17,599	$	17,402
	Series B		65,642,104		65,577,300		12,268		12,164
	Series C		62,486,436		62,486,436		24,490		24,388
	Series D		36,030,712		36,030,712		32,044		31,943
	Series E		14,285,712		10,000,000		17,500		17,347

	Total convertible preferred stock		246,470,064		240,194,788	$	103,901	$	103,244


	In connection with the Springstone acquisition in April, 2014, we sold an aggregate of 6,390,556 shares of our Series F convertible preferred stock, par value $0.01 per share (“Financing Shares”) for aggregate gross proceeds of approximately $65.0 million, pursuant to a Series F Preferred Stock Purchase Agreement. We sold the Financing Shares pursuant to an exemption from registration under Section 4(a)(2) of the Securities Act of 1933, as amended; all investors in the financing were accredited investors and we made no general solicitation for the sale of the Financing Shares. The Financing Shares are convertible into shares of common stock, par value $0.01 per share, on a one-for-one basis, as adjusted from time to time pursuant to the anti-dilution provisions of our Restated Certificate of Incorporation.

	In connection with the sale of Series F convertible preferred stock in April 2014, we filed a Restated Certificate of Incorporation with the State of Delaware, which increased the total number of shares that we were authorized to issue from 606,470,064 shares to 622,614,174. Out of the 622,614,174 shares authorized, 372,000,000 shares were designated as common stock and 250,614,174 shares were designated as preferred stock.

	Immediately prior to the completion of our IPO, all shares of outstanding convertible preferred stock automatically converted, on a one-for-one basis, into 249,601,435 shares of our common stock. All shares of authorized convertible preferred stock also automatically converted, on a one-for-one basis, into 250,614,174 authorized shares of our common stock.

	On December 16, 2014, we filed a Restated Certificate of Incorporation with the State of Delaware, which increased the total number of shares that we were authorized to issue from 622,614,174 shares to 910,000,000. Out of the 910,000,000 shares authorized, 900,000,000 shares were designated as common stock and 10,000,000 shares were designated as preferred stock.

	Common Stock Reserved for Future Issuance

	We have shares of common stock reserved for future issuance at December 31, 2014 as follows:



	Options outstanding		57,386,829
	Available for future stock option grants		36,561,469
	Available for ESPP		3,000,000
	Common stock warrants		36,824

	Total reserved for future issuance		96,985,122

Employee_Incentive_and_Retirem

Employee Incentive and Retirement Plans	12 Months Ended
Employee Incentive and Retirement Plans	Dec. 31, 2014
Employee Incentive and Retirement Plans	12. Employee Incentive and Retirement Plans
	The Company’s equity incentive plans provide for granting options and shares to employees, officers and directors. In addition, the Company offers a retirement plan and an ESPP to eligible employees.
	Stock-based compensation expense was as follows for the periods presented (in thousands):


			Year Ended				Year Ended				9 Months Ended
			December 31,				December 31,				December 31,
			2014				2013				2012
	Stock options		$	27,100			$	6,283			$	1,110
	ESPP			104				—				—
	Stock issued related to acquisition			9,946				—				—

	Total stock-based compensation expense		$	37,150			$	6,283			$	1,110

	This stock-based compensation expense was recorded in the consolidated statement of operations as follows (in thousands):


			Year Ended				Year Ended				9 Months Ended
			December 31,				December 31,				December 31,
			2014				2013				2012
	Sales and marketing		$	6,058			$	1,313			$	216
	Origination and servicing			2,140				424				60
	General and administrative:
	Engineering and product development			5,311				2,171				406
	Other			23,641				2,375				428

	Total stock-based compensation expense		$	37,150			$	6,283			$	1,110

	Equity Incentive Plans
	We have two equity incentive plans: the 2007 Stock Incentive Plan (the “2007 Plan”) and the 2014 Equity Incentive Plan (the “2014 Plan”). Upon our IPO in 2014, the 2007 Plan was terminated and all shares that remained available for future issuance under the 2007 Plan at the time of termination were transferred to the 2014 Plan. As of December 31, 2014, 1,561,469 options to purchase common stock granted under the 2007 Plan remain outstanding. As of December 31, 2014, the total number of shares available for future grants under the 2014 Plan is 36,561,469 shares, including shares transferred from the 2007 Plan.
	Stock Options
	Options are granted with an exercise price per share not less than the fair value at date of grant. Options generally vest over a four year period with 25% vesting at the end of one year and the remainder vesting quarterly thereafter. Options granted are exercisable up to ten years.
	Until our IPO, the fair value of the shares of common stock underlying stock options was established by the board of directors. Our board of directors relied upon valuations provided by third party valuation firms and other factors, including, but not limited to, the current status of the technical and commercial success of our operations, our financial condition, the stage of our product design and development, and competition to establish the fair value of our common stock at the time of grant of the option. Commencing on December 11, 2014, we use the closing stock price as listed on the NYSE on the grant date.
	We use the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:


			Year Ended				Year Ended				9 Months Ended
			December 31,				December 31,				December 31,
			2014				2013				2012
	Expected dividend yield			—				—				—
	Weighted-average assumed stock price volatility			53.5	%			59.1	%			63.5	%
	Weighted-average risk-free rate			1.88	%			1.46	%			1.01	%
	Weighted-average expected life (years)			6.35				6.3				6.28
	We have paid no cash or other dividends and do not anticipate paying any cash or other dividends in the foreseeable future and therefore used an expected dividend yield of 0.0% in our option-pricing model. The stock price volatility assumption is derived using a set of peer group public companies. Since we do not have significant trading history for our common stock, the expected stock price volatility for our common stock is estimated by reference to the average historical stock price volatility for industry peers. During the second quarter of 2014, the industry peer group was expanded to include small, mid and large capitalization companies in the consumer finance, investment management and technology industries taking into account the similarity in size, stage of life cycle and financial leverage. This peer group was similar to the comparable companies used in our pre-IPO common stock valuation analysis. The risk-free interest rate is based on the U.S. Treasury yield for a term consistent with the expected life of the awards in effect at the time of grant. The expected life represents the period of time that stock options are estimated to be outstanding, giving consideration to the contractual terms of the awards, vesting schedules, and expectations of future exercise patterns and post-vesting employee termination behavior. Given our limited operating history, the simplified method was applied to calculate the expected term.
	Options activity is summarized as follows:


			Options Outstanding
			Number of				Weighted-				Weighted-Average			Aggregate
			Shares				Average				Remaining			Intrinsic Value
							Exercise Price				Contractual Life			(in thousands)
							Per Share				(in years)
	Outstanding at December 31, 2013			43,314,728			$	0.94
	Options Granted			22,081,243			$	6.74
	Options Exercised			(6,037,666	)		$	0.59
	Options Forfeited/Expired			(1,971,476	)		$	2.8

	Outstanding at December 31, 2014			57,386,829			$	3.15				8.04		$	1,271,399

	Vested and expected to vest at December 31, 2014			54,738,680			$	3.03				7.98		$	1,224,605

	Exercisable at December 31, 2014			22,355,772			$	0.73				6.77		$	549,281

	For the year ended December 31, 2014, we granted service-based stock options to purchase 22,081,243 shares of common stock with a weighted average exercise price of $6.74 per share, a weighted average grant date fair value of $4.62 per share and an aggregate estimated fair value of approximately $102.1 million.
For the year ended December 31, 2013, we granted service-based stock options to purchase 12,707,000 shares of common stock with a weighted average exercise price of $2.44 per share, a weighted average grant date fair value of $2.71 per share and a total estimated fair value of approximately $34.4 million.
For the nine months ended December 31, 2012, we granted service-based stock options to purchase 15,244,944 shares of common stock with a weighted average exercise price of $0.60 per share, a weighted average grant date fair value of $0.35 per share and a total estimated fair value of approximately $10.6 million.
Options to purchase 6,037,666 shares with a total intrinsic value of $48.6 million were exercised during the year ended December 31, 2014. Options to purchase 8,931,876 shares with a total intrinsic value of $26.2 million were exercised during the year ended December 31, 2013. Options to purchase 8,635,712 shares with a total intrinsic value of $3.8 million were exercised during the nine months ended December 31, 2012. We capitalized $1.9 million and $0.2 million of stock-based compensation expense associated with the cost of developing software for internal use during the years ended December 31, 2014 and 2013, respectively. We did not capitalize stock-based compensation expense during the nine months ended December 31, 2012. The total fair value of stock options vested during the years ended December 31, 2014 and 2013 and the nine months ended December 31, 2012 was $19.6 million, $4.5 million and $7.1 million, respectively.
For the year ended December 31, 2014, stock-based compensation expense included $3.0 million of expense for the accelerated vesting of stock options for a terminated employee that was accounted for as a stock option modification. As of December 31, 2014 total unrecognized compensation cost was $114.2 million and these costs are expected to be recognized over the next 3.4 years.
No net income tax benefit has been recognized relating to stock-based compensation expense and no tax benefits have been realized from exercised stock options due to the full valuation allowance.
Employee Stock Purchase Plan
On December 11, 2014, our ESPP became effective. The ESPP allows eligible employees to purchase shares of our common stock at a discount through payroll deductions of up to 15% of their eligible compensation, subject to plan limitations. The ESPP provides six-month offering periods, and at the end of each offering period, employees are able to purchase shares at 85% of the lower of the fair market value of our common stock on the first trading day of the offering period or on the last day of the offering period.
As of December 31, 2014, a total of 3 million shares of common stock were reserved for the issuance of equity awards under the ESPP. As of December 31, 2014, employees had not purchased any shares under the ESPP and all 3 million shares remain available for future issuance.
The fair value of stock purchase rights granted to employees under the ESPP is measured on the grant date using the Black-Scholes option pricing model. The compensation expense related to ESPP purchase rights is recognized on a straight-line basis, net of estimated forfeitures, over the requisite service period. We use the following assumptions in estimating the fair value of grants under the ESPP, which are derived using the same methodology applied to stock option assumptions:


Year Ended December 31,		2014
Expected dividend yield			—
Weighted-average assumed stock price volatility			48.2	%
Weighted-average risk-free rate			0.09	%
Weighted-average expected life (years)			0.5
The fair value of stock purchase rights granted to employees under the ESPP is measured on the grant date using the Black-Scholes option pricing model. The compensation expense related to ESPP purchase rights is recognized on a straight-line basis over the requisite service period.
Stock Issued Related to Acquisition
As part of the Springstone acquisition, the sellers received shares of our Series F convertible preferred stock having an aggregate value of $25.0 million (“Share Consideration”). $22.1 million of the Share Consideration is subject to certain vesting and forfeiture conditions over a three-year period for key continuing employees. This is accounted for as a compensation agreement and expensed over the three-year vesting period. In conjunction with the conversion of preferred stock upon IPO, these unvested preferred shares were also converted into unvested common shares as the unvested common shares vest over time, stock-based compensation expense and accretion to additional paid-in capital are recorded.
Retirement Plan
Upon completing 90 days of service, employees may participate in our qualified retirement plan that is governed by section 401(k) of the IRS Code. Participants may elect to contribute their annual compensation up to the maximum limit allowed by federal tax law. In the second quarter of 2014, we approved an employer match of up to 3% of an employee’s eligible compensation with a maximum annual match of $5,000 per employee. The total expense for the employer match for the year ended December 31, 2014 was $0.9 million.
13. Income Taxes
For the year ended December 31, 2014, we recorded $1.4 million of income tax expense. The $1.4 million of income tax expense relates to the amortization of tax deductible goodwill from the acquisition of Springstone, which gives rise to an indefinite-lived deferred tax liability. There was no income tax benefit recorded on the pre-tax loss due to an increase in deferred tax asset valuation allowance.
For the year ended December 31, 2013, we recorded no income taxes related to pre-tax income due to the availability of deferred tax assets subject to a full valuation allowance to offset current year income. For the nine months ended December 31, 2012, we recorded no benefit for income taxes on the taxable losses due to the full valuation allowance.
Our effective tax rate differs from the statutory federal rate for the years ended December 31, 2014 and 2013 and the nine months ended December 31, 2012, as follows (in thousands):


		Year Ended								Year Ended						9 Months Ended
		December 31,								December 31,						December 31,
		2014								2013						2012
Income (loss) before income taxes		$	(31,504	)						$	7,308					$	(4,238	)
Tax at federal statutory rate		$	(10,711	)			34	%		$	2,485			34	%	$	(1,441	)	34	%
State tax, net of federal tax benefit			98				(0.31	%)			563			7.7	%		(151	)	3.56	%
Stock-based compensation expense			5,040				(16.00	%)			(593	)		(8.11	%)		(314	)	7.41	%
Tax credits			—				0	%			(459	)		(6.28	%)		—		0	%
Change in valuation allowance			6,858				(21.77	%)			(2,534	)		(34.67	%)		1,934		(45.63	%)
Change in unrecognized tax benefit			—				0	%			518			7.09	%		150		(3.54	%)
Other			105				(0.33	%)			20			0.27	%		(178	)	4.2	%

Income tax expense		$	1,390				(4.41	%)		$	—			0	%	$	—		0	%

The significant components of our deferred tax assets and liabilities at December 31, 2014 and 2013 are as follows (in thousands):


December 31,		2014				2013
Deferred tax assets
Net operating loss carry-forwards		$	27,550			$	18,818
Stock-based compensation			7,765				890
Reserves and accruals			6,249				1,914
Servicing fees			1,428				—
Intangibles			1,161				—
State credits			552				216
Organizational and start-up costs			10				516

Total deferred tax assets			44,715				22,354
Valuation Allowance			(40,102	)			(22,338	)

Deferred tax assets - net of valuation allowance			4,613				16

Deferred tax liability
Depreciation and amortization			(4,765	)			(16	)
Goodwill			(1,180	)			—

Total deferred tax liabilities			(5,945	)			(16	)

Deferred tax liability - net		$	(1,332	)		$	—

Our management assesses the available positive and negative evidence to estimate if sufficient future taxable income will be generated to utilize the existing deferred tax assets. On the basis of this evaluation, as of December 31, 2014, a full valuation allowance of $40.1 million has been recorded to recognize only deferred tax assets that are more likely than not to be realized.
At December 31, 2014, we had federal and state net operating loss (“NOL”) carry forwards of approximately $68.7 million and $61.5 million, respectively, to offset future taxable income. Our federal and state net operating loss carry-forwards will begin expiring in 2027 and 2016, respectively. Additionally, at December 31, 2014, we had federal and state research and development (“R&D”) tax credit carry forwards of approximately $0.3 million and $0.2 million, respectively. The federal credit carry forwards will begin expiring in 2017 and the state credits may be carried forward indefinitely.
In general, a corporation’s ability to utilize its NOL and R&D carry-forwards may be substantially limited due to ownership changes that may have occurred or that could occur in the future, as required by Section 382 of the Internal Revenue Code of 1986, as amended (“Code”), as well as similar state provisions. These ownership changes may limit the amount of NOL and R&D credit carry-forwards that can be utilized annually to offset future taxable income and tax, respectively.
The following is a reconciliation of our unrecognized tax benefits (in thousands):


		Year Ended				Year Ended				9 Months Ended
		December 31,				December 31,				December 31,
		2014				2013				2012
Balance at the beginning of the period		$	1,080			$	367			$	240
Additions (reductions) for tax positions related to the prior year			(589	)			523				—
Additions for tax positions related to the current year			—				190				127

Balance at the end of the period		$	491			$	1,080			$	367

If the cumulative unrecognized tax benefit is recognized there will be no effect on our effective tax rate due to the full valuation allowance. Due to the nature of the unrecognized tax benefits and the existence of tax attributes, we have not accrued any interest or penalties associated with unrecognized tax benefits in the consolidated statement of operations nor have we recognized a liability in the consolidated balance sheet. We do not believe the total amount of unrecognized benefit as of December 31, 2014, will increase or decrease significantly in the next twelve months.
We file income tax returns in the United States and various state jurisdictions. As of December 31, 2014, our federal tax returns for 2010 and earlier and our state tax returns for 2009 and earlier were no longer subject to examination by the taxing authorities. However, our tax attribute carry-forwards from closed tax years may be subject to examination to the extent utilized in an open tax year.

Income_Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2014
Income Taxes	13. Income Taxes
	For the year ended December 31, 2014, we recorded $1.4 million of income tax expense. The $1.4 million of income tax expense relates to the amortization of tax deductible goodwill from the acquisition of Springstone, which gives rise to an indefinite-lived deferred tax liability. There was no income tax benefit recorded on the pre-tax loss due to an increase in deferred tax asset valuation allowance.
	For the year ended December 31, 2013, we recorded no income taxes related to pre-tax income due to the availability of deferred tax assets subject to a full valuation allowance to offset current year income. For the nine months ended December 31, 2012, we recorded no benefit for income taxes on the taxable losses due to the full valuation allowance.
	Our effective tax rate differs from the statutory federal rate for the years ended December 31, 2014 and 2013 and the nine months ended December 31, 2012, as follows (in thousands):


		Year Ended						Year Ended					9 Months Ended
		December 31,						December 31,					December 31,
		2014						2013					2012
	Income (loss) before income taxes	$	(31,504	)				$	7,308				$	(4,238	)
	Tax at federal statutory rate	$	(10,711	)		34	%	$	2,485		34	%	$	(1,441	)	34	%
	State tax, net of federal tax benefit		98			(0.31	%)		563		7.7	%		(151	)	3.56	%
	Stock-based compensation expense		5,040			(16.00	%)		(593	)	(8.11	%)		(314	)	7.41	%
	Tax credits		—			0	%		(459	)	(6.28	%)		—		0	%
	Change in valuation allowance		6,858			(21.77	%)		(2,534	)	(34.67	%)		1,934		(45.63	%)
	Change in unrecognized tax benefit		—			0	%		518		7.09	%		150		(3.54	%)
	Other		105			(0.33	%)		20		0.27	%		(178	)	4.2	%

	Income tax expense	$	1,390			(4.41	%)	$	—		0	%	$	—		0	%

	The significant components of our deferred tax assets and liabilities at December 31, 2014 and 2013 are as follows (in thousands):


	December 31,	2014			2013
	Deferred tax assets
	Net operating loss carry-forwards	$	27,550		$	18,818
	Stock-based compensation		8,491			890
	Reserves and accruals		6,249			1,914
	Servicing fees		1,428			—
	Intangibles		1,161			—
	State credits		552			216
	Organizational and start-up costs		10			516

	Total deferred tax assets		45,441			22,354
	Valuation Allowance		(40,828	)		(22,338	)

	Deferred tax assets - net of valuation allowance		4,613			16

	Deferred tax liability
	Depreciation and amortization		(4,765	)		(16	)
	Goodwill		(1,180	)		—

	Total deferred tax liabilities		(5,945	)		(16	)

	Deferred tax liability - net	$	(1,332	)	$	—

	Our management assesses the available positive and negative evidence to estimate if sufficient future taxable income will be generated to utilize the existing deferred tax assets. On the basis of this evaluation, as of December 31, 2014, a full valuation allowance of $40.8 million has been recorded to recognize only deferred tax assets that are more likely than not to be realized.
	At December 31, 2014, we had federal and state net operating loss (“NOL”) carry forwards of approximately $68.7 million and $61.5 million, respectively, to offset future taxable income. Our federal and state net operating loss carry-forwards will begin expiring in 2027 and 2016, respectively. Additionally, at December 31, 2014, we had federal and state research and development (“R&D”) tax credit carry forwards of approximately $0.3 million and $0.2 million, respectively. The federal credit carry forwards will begin expiring in 2017 and the state credits may be carried forward indefinitely.
	In general, a corporation’s ability to utilize its NOL and R&D carry-forwards may be substantially limited due to ownership changes that may have occurred or that could occur in the future, as required by Section 382 of the Internal Revenue Code of 1986, as amended (“Code”), as well as similar state provisions. These ownership changes may limit the amount of NOL and R&D credit carry-forwards that can be utilized annually to offset future taxable income and tax, respectively.
	The following is a reconciliation of our unrecognized tax benefits (in thousands):


		Year Ended			Year Ended			9 Months Ended
		December 31,			December 31,			December 31,
		2014			2013			2012
	Balance at the beginning of the period	$	1,080		$	367		$	240
	Additions (reductions) for tax positions related to the prior year		(589	)		523			—
	Additions for tax positions related to the current year		—			190			127

	Balance at the end of the period	$	491		$	1,080		$	367

	If the cumulative unrecognized tax benefit is recognized there will be no effect on our effective tax rate due to the full valuation allowance. Due to the nature of the unrecognized tax benefits and the existence of tax attributes, we have not accrued any interest or penalties associated with unrecognized tax benefits in the consolidated statement of operations nor have we recognized a liability in the consolidated balance sheet. We do not believe the total amount of unrecognized benefit as of December 31, 2014, will increase or decrease significantly in the next twelve months.
	We file income tax returns in the United States and various state jurisdictions. As of December 31, 2014, our federal tax returns for 2010 and earlier and our state tax returns for 2009 and earlier were no longer subject to examination by the taxing authorities. However, our tax attribute carry-forwards from closed tax years may be subject to examination to the extent utilized in an open tax year.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies	14. Commitments and Contingencies
	Operating Lease Commitments
	Our corporate headquarters is located in San Francisco, California and consists of approximately 141,000 square feet of space under lease agreements that mostly expire in June 2022. Under these lease agreements, we have an option to extend nearly all of the space under the leases for five years. We have additional leased office space of approximately 20,000 square feet in Westborough, Massachusetts under a lease agreement that expires in January 2020.
	Total facilities rental expense for the years ended December 31, 2014 and 2013 and the nine month period ended December 31, 2012 was $3.7 million, $1.9 million and $0.6 million, respectively. Sublease rental expense for the years ended December 31, 2013 and the nine month period ended December 31, 2012 was $0.6 million and $0.5 million, respectively. We did not have sublease rental expense for the year ended December 31, 2014. Minimum rental expense for the years ended December 31, 2014 and 2013 and the nine month period ended December 31, 2012 was $3.3 million, $1.3 million and $0.1 million, respectively. As part of these lease agreements, as of December 31, 2014 we have pledged $0.6 million of cash and arranged for a $0.2 million letter of credit as security deposits.
	At December 31, 2014, the future minimum lease payments payable under the contracts for leased premises is as follows:


	Years Ended December 31,
	2015	$	5,277
	2016		6,679
	2017		6,985
	2018		7,282
	2019		6,585
	Thereafter		15,864

	Total	$	48,672

	Loan Funding Commitments
	For loans listed on the platform as a result of direct marketing efforts, we have committed to invest in such loans if investors do not provide funding for all or a portion of such loans. At December 31, 2014, there were 1,061 such loans on the platform with an unfunded balance of $10.3 million. All of these loans were fully funded by investors by January 7, 2015.
	In connection with transitional activities related to the acquisition of Springstone, in June 2014, we entered into a contingent loan purchase agreement through December 31, 2014 with an issuing bank that originates loans facilitated by Springstone and a third-party investor that has agreed to purchase certain of these loans from such bank. In January 2015, this purchase agreement was extended to April 2, 2015. The contingent loan purchase commitment provides that we will purchase such loans from the bank if the third-party investor defaults on its loan purchase obligations to the bank through April 2, 2015. The contingent loan purchase commitment limits the aggregate amount of covered loan originations to a maximum of $16.0 million. As of December 31, 2014, the amount remaining under the overall limit on the cumulative amount of such loan originations was $10.6 million. We were not required to purchase any such loans pursuant to the contingent loan purchase commitment for the year ended December 31, 2014.
	Credit Support Agreement
	We are subject to a credit support agreement with a certificate investor. The credit support agreement requires us to pledge and restrict cash in support of its contingent obligation to reimburse the investor for credit losses on loans underlying the investor’s certificate that are in excess of a specified, aggregate loss threshold. We are contingently obligated to pledge cash, not to exceed $5.0 million, to support this contingent obligation. As of December 31, 2014 and 2013, approximately $3.4 million was pledged and restricted to support this contingent obligation.

	As of December 31, 2014 and 2013, the credit losses pertaining to the investor’s certificate have not exceeded the specified threshold, nor are future credit losses expected to exceed the specified threshold, and thus no expense or liability has been recorded. We currently do not anticipate recording losses resulting from our contingent obligation under this credit support agreement. If losses related to the credit support agreement are later determined to be likely to occur and are estimable, results of operations could be affected in the period in which such losses are recorded.
	Loan Purchase Obligation
	During the fourth quarter of 2014, our loan account program agreement with our primary issuing bank, WebBank, a Utah-chartered industrial bank that handles a variety of consumer and commercial financing programs, was modified such that WebBank retains ownership of the loans facilitated through our marketplace for two business days before selling the loans to us. WebBank earns interest related to such loans during the two business days it owns the loans. As part of this agreement, we have committed to purchase these loans that are originated by WebBank and facilitated through our marketplace. As of December 31, 2014 we were committed to purchase loans with an outstanding principal balance of $4.1 million at par plus accrued interest. There was no such commitment as of December 31, 2013.
	Legal
	On June 5, 2014, Springstone received a Civil Investigative Demand from the Consumer Financial Protection Bureau, referred to as CFPB, related to the period from 2009 through May 2014. The purpose of the investigation is to determine whether Springstone engaged in unlawful acts or practices in connection with the marketing, issuance, and servicing of loans for healthcare related financing during the period. As of December 31, 2014, we had provided all of the documents requested by the CFPB. We are continuing to evaluate this matter.
	During the second quarter of 2014, we also received notice from the California Employment Development Department, referred to as EDD, that it had commenced an examination of our records concerning the employment relationship of certain individuals who performed services for us from 2011 through 2014. Based on the EDD’s determination, certain of these individuals should have been classified as employees with appropriate tax withholding and employer related taxes incurred and paid. The EDD has completed its examination and issued a Final Notice of Assessment, which serves as the EDD’s official notice of its determination relating to this matter. During the fourth quarter of 2014, we paid the full assessment to the EDD.
	In the fourth quarter of 2014, we settled a dispute with a former consultant for cash and shares of our common stock valued at market price on date of settlement.
	In addition to the foregoing, we may be subject to legal proceedings and regulatory actions in the ordinary course of business. We do not believe it is probable that the ultimate liability, if any, arising out of any such matter will have a material effect on our financial condition, results of operations or cash flows.

Segment_Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2014
Segment Reporting	15. Segment Reporting
	We report segment information using the “management approach.” Under this approach, operating segments are identified in substantially the same manner as they are reported internally and used by us for purposes of evaluating performance and allocating resources. Based on this approach, we have one reportable segment. Our management reporting process is based on our internal operating structure, which is subject to change and is not necessarily similar to that of other comparable companies.

Springstone_Acquisition

Springstone Acquisition	12 Months Ended
Springstone Acquisition	Dec. 31, 2014
Springstone Acquisition	16. Springstone Acquisition
	On April 17, 2014, we acquired all of the outstanding limited liability company interests of Springstone (Acquisition) for $111.8 million, which was comprised of $109.0 million in cash and shares of Series F convertible preferred stock with an aggregate value of $2.8 million. Upon closing of the Acquisition, Springstone became our wholly owned subsidiary. We have included the financial results of Springstone in the consolidated financial statements from the date of acquisition.
	To secure the retention of certain key employees, a total of $25.6 million comprised of $22.1 million of shares of Series F convertible preferred stock (“Escrow Shares”) and $3.5 million of cash were placed in a third-party escrow, and are subject to certain vesting and forfeiture conditions applicable to these employees continuing employment over a three-year period from the closing. These amounts are accounted for as a compensation arrangement and expensed over the three-year vesting period and are included under “General and administrative operating expenses” in the Consolidated Statement of Operations. Additionally, $19.0 million of the cash consideration and certain Escrow Shares were placed in a third-party escrow for 15 months from the closing date to secure, in part, the indemnification obligations of the sellers under the purchase agreement. In connection with the Acquisition, we also paid $2.4 million for transactions costs incurred by Springstone.
	The cash portion of the consideration was funded by a combination of cash from us, Series F convertible preferred stock financing, and proceeds from the Term Loan.
	We have completed the allocation of the purchase price to acquired assets and liabilities with the exception of finalizing the determination of certain contingent liabilities and the finalization of any deferred tax asset or liability as of the acquisition date. The preliminary purchase price allocation as of the acquisition date is as follows (in thousands):


			Fair Value
	Assets:
	Cash		$	2,256
	Restricted cash			1,581
	Property, equipment and software			366
	Other assets			599
	Identified intangible assets			40,200
	Goodwill			72,592
	Liabilities:
	Accounts payable			239
	Accrued expenses and other liabilities			5,536

	Total purchase consideration		$	111,819

	The goodwill balance is primarily attributed to expected operational synergies, the combined workforce, and the future development initiatives of the combined workforce. Goodwill is expected to be deductible for U.S. income tax purposes.
	The amounts of net revenue of Springstone included in our consolidated statement of operations from the acquisition date of April 17, 2014 to December 31, 2014 was $15.3 million. We have recognized acquisition-related expenses of $2.3 million for the year ended December 31, 2014, which is included in general and administrative expense. We did not recognize acquisition-related costs for the year ended December 31, 2013 or the nine months ended December 31, 2012.
	The following pro forma financial information summarizes the combined results of operations for us and Springstone, as though the companies were combined as of January 1, 2013. These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of the results of operations which would have resulted had the acquisition occurred as of January 1, 2013, nor is it indicative of future operating results. The pro forma results presented below include interest expense on the debt financing, amortization of acquired intangible assets, compensation expense related to the post-acquisition compensation arrangements entered into with the continuing employees and tax expense (in thousands, except per share data):


	Years Ended December 31,		2014			2013
	Total net revenue		$	219,174		$	113,040
	Net loss (1)		$	(33,796	)	$	(17,592	)
	Basic net loss per share attributable to common stockholders		$	(0.45	)	$	(0.34	)
	Diluted net loss per share attributable to common stockholders		$	(0.45	)	$	(0.34	)

	-1	Net loss for the year ended December 31, 2013 includes $8.6 million of one-time acquisition-related costs and compensation expenses.

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
Schedule II - Valuation and Qualifying Accounts	Dec. 31, 2014
Schedule II - Valuation and Qualifying Accounts	Schedule II – Valuation and Qualifying Accounts (in thousands)


				Additions
		Balance at		Charged to		Charged		Deductions		Balance at
		Beginning of		Expenses		to Other				End of Period
		Period				Accounts
	Allowance for Deferred Tax Assets:
	Year ended December 31, 2014	$	22,338	$	6,857	$	11,633	$	—	$	40,828
	Year ended December 31, 2013	$	23,939	$	—	$	933	$	2,534	$	22,338
	Nine months ended December 31, 2012	$	22,036	$	1,934	$	—	$	31	$	23,939

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Revenue Recognition	Revenue Recognition
	Transaction Fee Revenue: Transaction fees are paid by issuing banks or service providers to us for the work we perform through our platform and Springstone’s platform. The amount of these fees is based upon the terms of the loan, including grade, rate, term and other factors. Where applicable, the transaction fees are included in the annual percentage rate calculation provided to the borrower and are subtracted from the gross loan proceeds distributed to the borrower. Our policy is to recognize transaction fee revenue subject to refunds because we can estimate refunds based on our refund experience. We record transaction fee revenue net of refunds at the origination of a loan by an issuing bank.
	Servicing Fees: Note investors, certain certificate holders and whole loan purchasers typically pay us a servicing fee on each payment received from a borrower or on the investors’ month-end principal balance of loans serviced. The servicing fee compensates us for services rendered related to managing payments from borrowers and to investors and maintaining investors’ account portfolios. We record servicing fees as a component of operating revenue when received. Servicing fees can be, and have been, modified or waived at management’s discretion.

	Management Fees: Qualified investors can invest in investment funds managed by LC Advisors, LLC (LCA), a registered investment advisor that acts as the general partner for certain private funds and advisor to separately managed accounts. LCA charges limited partners in the investment funds a management fee payable monthly in arrears, based on a limited partner’s capital account balance at month end. LCA also earns management fees on SMAs, payable monthly in arrears, based on the month-end balances in the SMA accounts. Management fees are a component of operating revenue in the consolidated statements of operations and are recorded as earned. Management fees can be, and have been, modified or waived at the discretion of LCA.
	Other Revenue (Expense): Other revenue (expense) consists primarily of gains and losses on sales of whole loans and referral revenue earned from partner companies when customers referred by us complete specified actions with them.
Whole Loan Sold	Whole Loan Sales
	Under loan sale agreements, we sell all of our right, title and interest in the loan. At the time of such sales, we simultaneously enter into loan service agreements under which we acquire the right to service the loans. We calculate a gain or loss on the whole loan sale, including the acquisition of servicing rights, based on the net proceeds from the whole loan sale, minus the net investment in the loans being sold. The net investment in the loans sold has been reduced or increased by applicable servicing asset or liability respectively. Gains and losses on whole loan sales previously reported in “Gain from sales of member loans” were reclassified to “Other revenue (expense)” in the consolidated statements of operations.
	Additionally, as needed, we will record a liability for significant estimated post-sale obligations or contingent obligations to the purchasers of the loans.
	From January 1, 2013 through June 30, 2013, transaction fees and direct loan origination and acquisition costs for loans that were sold to independent third-party purchasers and met the accounting requirements for a sale were deferred and included in the overall net investment in the loans purchased. Accordingly, the transaction fees for such loans were not included in transaction fee revenue and the direct loan origination costs for such loans were not included in operating expenses. A gain or loss on the whole loan sales was recorded on the sale date in “Gain from sales of member loans”.
	Effective July 1, 2013, we elected the fair value option for whole loans acquired and subsequently sold to independent third-party purchasers. Under this election, all transaction fees and all direct costs incurred in the origination process are recognized in earnings as earned or incurred and are not deferred. As such, beginning July 1, 2013, transaction fees for whole loans sold to independent third-party purchasers are included in “Transaction fees” and direct loan origination costs are included in “Origination and servicing” operating expense in the consolidated statement of operations. Gains and losses from whole loan sales are recorded in “Other revenue (expense)” in the consolidated statements of operations.
Cash and Cash Equivalents	Cash and Cash Equivalents
	Cash and cash equivalents include unrestricted deposits with financial institutions in checking, money market and short-term certificate of deposit accounts. We consider all highly liquid investments with stated maturity dates of three months or less from the date of purchase to be cash equivalents.
Restricted Cash	Restricted Cash
	Restricted cash consists primarily of certain checking, money market and certificate of deposit accounts that are: (i) pledged to or held in escrow by our correspondent banks as security for transactions processed on or related to our platform; (ii) pledged through a credit support agreement with a certificate holder or (iii) received from investors but not yet applied to their accounts on the platform and transferred to segregated bank accounts that hold investors’ funds.
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities
	We record loans, notes and certificates and servicing assets and liabilities at fair value on a recurring basis. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.
	The fair value hierarchy requires that an entity maximize the use of observable inputs when estimating fair value. The fair value hierarchy includes the following three-level classification which is based on the market observability of the inputs used for estimating the fair value of the assets or liabilities being measured:


	Level 1		—		Quoted market prices in active markets for identical assets or liabilities.

	Level 2		—		Significant other observable inputs (e.g., quoted prices for similar items in active markets, quoted prices for identical or similar items in markets that are not active, inputs other than quoted prices that are observable such as interest rate and yield curves, and market-corroborated inputs).
	Level 3		—		Inputs that are unobservable in the market but reflective of the types of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow methodologies or similar techniques. We utilize discounted cash flow valuation techniques based on our estimate of future cash flows that are expected to occur over the life of a financial instrument.
	In accordance with applicable accounting guidance, we disclose significant unobservable inputs used in estimating fair value of the Level 3 assets and liabilities. We consider unobservable inputs to be significant, if by their exclusion, the estimate fair value of a Level 3 asset or liability would be impacted by a significant percentage change, or based on qualitative factors such as the nature of the instrument and significance of the unobservable inputs relative to other inputs used within the valuation.
Fair Valuation Adjustments of Loans at Fair Value and Notes and Certificates at Fair Value	Loans, Notes and Certificates at Fair Value
	The fair value election for loans, notes and certificates allows for symmetrical accounting of the timing and amounts recognized for both expected unrealized losses and charge-offs on the loans and the related notes and certificates, consistent with the member payment dependent design of the notes and certificates. Changes in the fair value of loans, notes and certificates are recorded in fair value adjustments in the period of the fair value changes.
	Significant assumptions used in valuing our loans, notes and certificates are as follows:
	Discount rates – The discount rates reflect our estimates of the rates of return that investors in unsecured consumer credit obligations would require when investing in the various credit grades of loans. The discount rates for the projected net cash flows of the notes and certificates reflects our estimates of the rates of return, including risk premiums that investors in unsecured consumer credit obligations would require when investing in notes issued by us and certificates issued by the Trust, an independent Delaware business trust that acquires and holds loans for the sole benefit of certificate investors, with cash flows dependent on specific grades of loans. Discount rates for existing loans, notes and certificates are adjusted to reflect the time value of money and a risk premium to reflect the amount of compensation market participants require due to the credit and liquidity related uncertainty inherent in the instruments’ cash flows.
	Net cumulative expected losses – Net cumulative expected losses are an estimate of the net cumulative principal payments that will not be repaid over the entire life of a loan, note or certificate, expressed as a percentage of the original principal amount of the loan, note or certificate. The estimated net cumulative loss is the sum of the net losses estimated to occur each month of the life of a new loan, note or certificate. Therefore, the total net losses estimated to occur over the remaining maturity of existing loans, notes and certificates are less than the estimated net cumulative losses of comparable new loans, notes and certificates. A given month’s estimated net losses are a function of two variables:

		(i)	estimated default rate, which is an estimate of the probability of not collecting the remaining contractual principal amounts owed and,

		(ii)	estimated net loss severity, which is the percentage of contractual principal cash flows lost in the event of a default, net of the average net recovery, expected to be received on a defaulted loan, note or certificate.
	Our and the Trust’s obligation to pay principal and interest on any note or certificate, as applicable, is equal to the pro-rata portion of the payments, if any, received on the related loan subject to applicable fees. The gross effective interest rate associated with notes or certificates is the same as the interest rate earned on the underlying loan. Payments to holders of notes and certificates depends on the payments received on loans, a reduction or increase of the expected future payments on loans will decrease or increase the estimated fair values of the related notes and certificates. Expected losses and actual charge-offs on loans are offset to the extent that the loans are financed by notes and certificates that effectively absorb the related loan losses.
Servicing Assets and Liabilities at Fair Value	Servicing Assets and Liabilities at Fair Value
	We record servicing assets and liabilities at their estimated fair values when we sell whole loans to independent third-parties or whole loan buyers or when the servicing contract commences. The gain or loss on a loan sale is recorded in other revenue (expense) in the consolidated statements of operations while the component of the gain or loss that is based on the degree to which the contractual loan servicing fee is above or below an estimated market rate loan servicing fee is recorded as an offset in servicing assets or liabilities. Servicing assets and liabilities are recorded in “Other Assets” and “Accrued Expenses and Other Liabilities,” respectively, on the consolidated balance sheets. Over the life of the loan, changes in the estimated fair value of servicing assets and liabilities are reported in “Servicing Fees” in the consolidated statement of operations in the period in which the changes occur.
	We use a discounted cash flow model to estimate the fair value of the loan servicing asset or liability which considers the contractual servicing fee revenue we earn on the loans, estimated market rate servicing fee to service such loans, the current principal balances of the loans and projected servicing revenues over the remaining terms of the loans.

	Significant assumptions used in valuing our servicing assets and liabilities are as follows:
	Market servicing rates – We estimate adequate servicing compensation rates as those which a market participant would require to service the loans that we sell to, or that are acquired, by third parties. We estimated these market servicing rates based on observable market servicing rates for other loan types in the industry, adjusted for the unique loan attributes of the loans we sell and service (i.e. unsecured fixed rate fully amortizing loans, ACH loan payments, intermediate terms, prime credit grades and sizes) and with a market servicing benchmarking analysis performed by a third-party valuation firm.
	Discount rates – The discount rates for loan servicing rights reflect our estimates of the rates of return that investors in servicing rights for unsecured consumer credit obligations would require when investing in similar servicing rights. Discount rates for servicing rights on existing loans are adjusted to reflect the time value of money and a risk premium intended to reflect the amount of compensation market participants would require due to the credit and liquidity uncertainty inherent in the instruments’ cash flows.
	Net cumulative expected losses – Net cumulative expected losses are an estimate of the net cumulative principal payments that will not be repaid over the entire life of a loan expressed as a percentage of the original principal amount of the loan. The assumption regarding net cumulative losses reduces the projected balances and expected terms of the loans, which are used to project future servicing revenues. The estimated net cumulative loss is the sum of the net losses estimated to occur each month of the life of a new loan. A given month’s estimated net losses are a function of two variables:

		(i)	estimated default rate, which is an estimate of the probability of not collecting the remaining contractual principal amounts owed and,

		(ii)	estimated net loss severity, which is the percentage of contractual principal cash flows lost in the event of a default, net of the average net recovery, expected to be received on a defaulted loan.
	Cumulative prepayments – Cumulative prepayments are estimates of the cumulative amount of principal prepayments that will occur over the entire life of a loan expressed as a percentage of the original principal amount of the loan. The assumption regarding cumulative prepayments reduces the projected balances and expected terms of the loans, which are used to project future servicing revenues. Assumptions regarding cumulative prepayments are incorporated into the valuation process to estimate the fair value of loan servicing assets and liabilities as they are key valuation assumptions used by investors in servicing rights for unsecured consumer credit obligations.
Financial Instruments Not Recorded at Fair Value	Financial Instruments Not Recorded at Fair Value
	Following are descriptions of the valuation methodologies used for estimating the fair values of financial instruments not recorded at fair value on a recurring basis in the consolidated balance sheets; these financial instruments are carried at historical cost or amortized cost in the consolidated balance sheets.

		•		Short-term financial assets: Short-term financial assets include cash and cash equivalents, restricted cash and accrued interest. These assets are carried at historical cost.

		•		Short-term financial liabilities: Short-term financial liabilities include accounts payable, accrued interest payable and payables to investors. These liabilities are carried at historical cost.
Accrued Interest and Other Receivables	Accrued Interest and Other Receivables
	Interest income on loans is calculated based on the contractual interest rate of the loan and recorded as interest income as earned. Loans are placed on non-accrual status upon reaching 120 days past due. When a loan is placed on non-accrual status, we stop accruing interest and reverse all accrued but unpaid interest as of such date.
Property, Equipment and Software, Net	Property, Equipment and Software, net
	Property, equipment and software consists of internally developed and purchased software, computer equipment, leasehold improvements, furniture and fixtures and construction in process, which are recorded at cost, less accumulated depreciation and amortization.
	Computer equipment, purchased software and furniture and fixtures are depreciated or amortized on a straight line basis over two to five years. Leasehold improvements are amortized over the shorter of the lease term excluding renewal periods or the estimated useful life. Internally developed software is amortized on a straight line basis over the project’s estimated useful life, generally three years.
	Internally developed software is capitalized when preliminary development efforts are successfully completed and it is probable that the project will be completed and the software will be used as intended. Capitalized costs consist of salaries and payroll related costs for employees and fees paid to third-party consultants who are directly involved in development efforts. Costs related to preliminary project activities and post implementation activities including training and maintenance are expensed as incurred. Costs incurred for upgrades and enhancements that are considered to be probable to result in additional functionality are capitalized.

	We evaluate potential impairments of our long-lived assets whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. Events or changes in circumstances that could result in impairment include, but are not limited to, underperformance relative to historical or projected future operating results, significant changes in the manner of use of the assets or the strategy for our overall business and significant negative industry or economic trends. The determination of recoverability of long-lived assets is based on whether an estimate of undiscounted future cash flows resulting from the use of the asset and its eventual disposition exceed the net book value of the asset. If the long-lived asset is not recoverable, measurement of an impairment loss is based on the fair value of the asset. When an impairment loss is recognized, the carrying amount of the asset is reduced to its estimated fair value.
Consolidation Policies	Consolidation Policies
	Our policy is to consolidate the financial statements of entities in which we have a controlling financial interest. We determine whether we have a controlling financial interest in an entity by evaluating whether the entity is a voting interest entity or variable interest entity (“VIE”) and if the accounting guidance requires consolidation.
	Our determination of whether we have a controlling financial interest in a voting interest entity is based on whether we have ownership of a majority of the entities’ voting equity interest directly or through control of management of the entities.
	We determine whether we have a controlling financial interest in a VIE by considering whether our involvement with the VIE is significant and whether we are the primary beneficiary of the VIE based on the following:

		•		we have the power to direct the activities of the VIE that most significantly impact the entity’s economic performance;

		•		the aggregate indirect and direct variable interests held by us have the obligation to absorb losses or the right to receive benefits from the entity that could be significant to the VIE; and

		•		qualitative and quantitative factors regarding the nature, size, and form of our involvement with the VIE.
	We believe our beneficial ownership of a controlling financial interest in the Trust qualifies as an equity investment in a VIE that results in consolidation of the Trust for financial accounting and reporting purposes. We perform on-going reassessments on the status of the entities and whether facts or circumstances have changed in relation to our involvement in VIEs which could cause our conclusion to change.
	All intercompany transactions and balances have been eliminated.
Business Combination	Business Combination
	We use our best estimates and assumptions to assign fair value to the tangible and intangible assets acquired and liabilities assumed at the acquisition date. Because our estimates are inherently uncertain and subject to refinement, we may record adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed, with the corresponding offset to goodwill during the one-year measurement period if information exists to indicate an estimate may change. In addition, uncertain tax positions and tax-related valuation allowances, if any, are initially established in connection with a business combination as of the acquisition date. We continue to collect information and reevaluate these estimates and assumptions quarterly and record any adjustments to our preliminary estimates to goodwill provided that we are within the measurement period. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to our consolidated statements of operations.
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	Goodwill represents the fair value of acquired businesses in excess of the aggregate fair value of the identified net assets acquired. Goodwill is not amortized but is tested for impairment annually or whenever indications of impairment exist. Our annual impairment testing date is April 1. We can elect to qualitatively assess goodwill for impairment if it is more likely than not that the fair value of a reporting unit (generally defined as a component of a business for which financial information is available and reviewed regularly by management) exceeds its carrying value. A qualitative assessment may consider macroeconomic and other industry-specific factors, such as trends in short-term and long-term interest rates and the ability to access capital or company-specific factors, such as market capitalization in excess of net assets, trends in revenue generating activities and merger or acquisition activity.
	If we elect to bypass qualitatively assessing goodwill or it is not more likely than not that the fair value of a reporting unit exceeds its carrying value, we must estimate the fair values of our reporting units and compare them to their carrying values. Estimated fair value of a reporting unit is generally established using an income approach based on a discounted cash flow model or a market approach which compares each reporting unit to comparable companies in their respective industries.

	Intangible assets are amortized over their useful lives in a manner that best reflects their economic benefit. Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. We do not have any indefinite-lived intangible assets.
Stock-based Compensation	Stock-based Compensation
	Stock-based compensation includes the expense associated with stock options granted to employees and with the company’s employee stock purchase plan (ESPP), as well as expense associated with stock issued related to our acquisition of Springstone. All stock-based awards made to employees are recognized in the consolidated financial statements based on their respective grant date fair values. Any benefits of tax deductions in excess of recognized compensation cost are reported as a financing cash inflow and cash outflow from operating activities. The stock-based compensation related to awards that are expected to vest is amortized using the straight-line method over the award’s vesting term, which is generally four years.
	The fair value of share option awards is estimated on the date of grant using the Black-Scholes option pricing model. The Black-Scholes option pricing model considers, among other factors, the underlying fair value of common stock, the expected term of the option award, expected volatility of our common stock and expected future dividends, if any.
	Stock-based compensation expense for stock options is recorded net of estimated forfeitures, such that expense is recorded only for those stock-based awards that are expected to vest. Forfeitures of awards are estimated at the time of grant and revised in subsequent periods if actual forfeitures differ from initial estimates or if future forfeitures are expected to differ from recent actual or previously expected forfeitures.
	Share option awards issued to non-employees are recorded at their fair value on the awards’ vesting date. We use the Black-Scholes option pricing model to estimate the fair value of share options granted to non-employees at each vesting date to determine the amount of stock-based compensation.
	The fair value of stock purchase rights granted to employees under the ESPP is measured on the grant date using the Black-Scholes option pricing model. The compensation expense related to ESPP purchase rights is recognized on a straight-line basis over the requisite service period.
Income Taxes	Income Taxes
	We account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.
	We recognize deferred tax assets to the extent that we believe these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we would be able to realize our deferred tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.
	We account for uncertain tax positions using a two-step process whereby (i) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position (“more-likely-than-not recognition threshold”) and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority.
	We recognize interest and penalties accrued on any unrecognized tax benefits as a component of provision for income tax in the consolidated statement of operations.
Use of Estimates	Use of Estimates
	The preparation of our consolidated financial statements and related disclosures in conformity with GAAP requires management to make judgments, assumptions and estimates that affect the amounts reported in our consolidated financial statements and accompanying notes. We base our estimates on historical experience and on various other factors we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of certain assets and liabilities. These judgments, assumptions and estimates include but are not limited to the following: (i) fair value determinations for loans, notes and certificates; (ii) stock-based compensation expense; (iii) provision for income taxes, net of valuation allowance for deferred tax assets; (iv) consolidation of variable interest entities; (v) fair value determinations for servicing assets and liabilities; and (vi) reserves for contingencies. These judgments, estimates and assumptions are inherently subjective in nature and actual results may differ from these estimates and assumptions, and the differences could be material.
Impact of New Accounting Standards	Impact of New Accounting Standards
	In June 2014, the FASB issued guidance to clarify accounting for stock-based compensation awards that provide that a performance target could be achieved after the requisite service period, which is effective January 1, 2016. The guidance requires that a performance target that affects vesting, and is achievable after the requisite service period, be treated as a performance condition. We are currently evaluating the impact of this guidance on our consolidated financial statements, basic net income (loss) per share referred to as EPS, and related disclosures.
	In May 2014, the FASB issued new guidance on revenue recognition, which is effective January 1, 2017. The guidance clarifies that revenue from contracts with customers should be recognized in a manner that depicts both the likelihood of payment and the timing of the related transfer of goods or performance of services. We are currently evaluating the impact of this new guidance on our consolidated financial statements, EPS and related disclosures.

Net_Income_Loss_Per_Share_and_1

Net Income (Loss) Per Share and Net Income (Loss) Attributable to Common Stockholders (Tables)	12 Months Ended
	Dec. 31, 2014
Basic and Diluted Net Income (Loss) per Share	The following table details the computation of the basic and diluted net income (loss) per share (in thousands, except share and per share data):


			Year Ended			Year Ended			9 Months Ended
			December 31,			December 31,			December 31,
			2014			2013			2012
	Net income (loss)		$	(32,894	)	$	7,308		$	(4,238	)
	Less: Net income allocated to participating securities (1)			—			(7,117	)		—

	Net income (loss) available to common stockholders		$	(32,894	)	$	191		$	(4,238	)

	Weighted average common shares - Basic			75,573,742			51,557,136			41,359,676
	Weighted average effect of dilutive securities:
	Stock Options			—			28,542,404			—
	Warrants						1,327,436			—

	Weighted average common shares - Diluted			75,573,742			81,426,976			41,359,676

	Basic net loss per share attributable to common stockholders		$	(0.44	)	$	0		$	(0.10	)
	Diluted net loss per share attributable to common stockholders		$	(0.44	)	$	0		$	(0.10	)

	-1	In a period with net income, both earnings and dividends (if any) are allocated to participating securities. In a period with a net loss, only dividends (if any) are allocated to participating securities.

Loans_Notes_and_Certificates_a1

Loans, Notes and Certificates and Loan Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2014
Loans, Notes and Certificates Measured at Fair Value on Recurring Basis	At December 31, 2014 and December 31, 2013, loans, notes and certificates measured at fair value on a recurring basis were as follows (in thousands):


		Loans						Notes and Certificates
	December 31,	2014			2013			2014			2013
	Aggregate principal balance outstanding	$	2,836,729		$	1,849,042		$	2,851,837		$	1,859,982
	Net fair value adjustments		(38,224	)		(20,000	)		(38,219	)		(19,992	)

	Fair value	$	2,798,505		$	1,829,042		$	2,813,618		$	1,839,990

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	12 Months Ended
Fair Value of Financial Instruments (Tables)	Dec. 31, 2014
Loans, Loan Servicing Rights, Related Notes and Certificates	As our loans and related notes and certificates and loan servicing rights do not trade in an active market with readily observable prices, we use significant unobservable inputs to measure the fair value of these assets and liabilities. Accordingly, we classify them as Level 3 as follows (in thousands):


		Level 1 Inputs				Level 2 Inputs				Level 3 Inputs				Fair Value
	December 31, 2014
	Assets:
	Loans	$	—			$	—			$	2,798,505			$	2,798,505
	Servicing assets		—				—				2,181				2,181

	Total assets	$	—			$	—			$	2,800,686			$	2,800,686

	Liabilities:
	Notes and certificates	$	—			$	—			$	2,813,618			$	2,813,618
	Servicing liabilities		—				—				3,973				3,973

	Total liabilities	$	—			$	—			$	2,817,591			$	2,817,591

	December 31, 2013
	Assets:
	Loans	$	—			$	—			$	1,829,042			$	1,829,042
	Servicing assets		—				—				534				534

	Total assets	$	—			$	—			$	1,829,576			$	1,829,576

	Liabilities:
	Notes and certificates	$	—			$	—			$	1,839,990			$	1,839,990
	Servicing liabilities		—				—				936				936

	Total liabilities	$	—			$	—			$	1,840,926			$	1,840,926

Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements	The following table presents quantitative information about the significant unobservable inputs used for certain of our Level 3 fair value measurements at December 31, 2014 and December 31, 2013 (in thousands):


				Range of Inputs
	Year Ended December 31, 2014	Unobservable Input		Minimum				Maximum				Weighted
	Year Ended December 31, 2014	Unobservable Input		Minimum				Maximum				Average
	Loans, notes & certificates	Discount rates			5.2	%			17.4	%			10.1	%
		Net cumulative expected losses			0.3	%			22	%			10	%

	Servicing asset/liability	Discount rates			5.3	%			23.7	%			10.7	%
		Net cumulative expected losses			0.3	%			22	%			10.2	%
		Cumulative prepayments			16.5	%			26.7	%			20	%
		Market servicing rates (% per annum on unpaid principal balance)			0.5	%			0.7	%			0.5	%

				Range of Inputs
	Year Ended December 31, 2013	Unobservable Input		Minimum				Maximum				Weighted
	Year Ended December 31, 2013	Unobservable Input		Minimum				Maximum				Average
	Loans, notes & certificates	Discount rates			5.9	%			15.9	%			10.2	%
		Net cumulative expected losses			2.1	%			23.7	%			10.1	%

	Servicing asset/liability	Discount rates			6.1	%			15.9	%			10	%
		Net cumulative expected losses			2.1	%			23.7	%			9.6	%
		Market servicing rates (% per annum on unpaid principal balance)			0.4	%			0.4	%			0.4	%
The sensitivities related to market servicing rates and prepayment rates	The sensitivities related to market servicing rates and prepayment rates were not significant as of December 31, 2013.



	December 31,	2014
		Servicing				Servicing
		Assets				Liabilities
	Weighted average market servicing rate assumptions		0.5	%			0.5	%
	Increase (decrease) in fair value from:
	Servicing rate increase to 0.60%	($	915	)		$	1,416
	Servicing rate decrease to 0.40%	$	965			($	1,366	)
	Weighted average cumulative prepayment assumptions		20	%			20	%
	Increase (decrease) in fair value from:
	25% increase in cumulative prepayments	($	65	)		($	228	)
	25% decrease in cumulative prepayments	$	67			$	231
Loans, Notes and Certificates
Additional Information about Level 3 Measured at Fair Value on Recurring Basis	The following table presents additional information about Level 3 loans, notes and certificates measured at fair value on a recurring basis for the years ended December 31, 2014 and December 31, 2013 (in thousands):


		Loans				Notes and
		Loans				Certificates
	Fair value at December 31, 2012	$	781,215			$	785,316
	Purchases of loans		2,064,628				—
	Issuances of notes and certificates		—				1,618,269
	Whole loan sales		(446,224	)			—
	Principal payments		(511,232	)			(504,330	)
	Recoveries from sale and collection of charged-off loans		(1,716	)			(1,669	)

	Carrying value before fair value adjustments		1,886,671				1,897,586
	Fair value adjustments, included in net income (loss)		(57,629	)			(57,596	)

	Fair value at December 31, 2013	$	1,829,042			$	1,839,990
	Purchases of loans		3,886,427				—
	Issuances of notes and certificates		—				2,156,019
	Whole loan sales		(1,730,045	)			—
	Principal payments		(1,054,357	)			(1,049,982	)
	Recoveries from sale and collection of charged-off loans		(7,960	)			(7,929	)

	Carrying value before fair value adjustments		2,923,107				2,938,098
	Fair value adjustments, included in net income (loss)		(124,602	)			(124,480	)

	Fair value at December 31, 2014	$	2,798,505			$	2,813,618

Servicing Asset/Liability
Additional Information about Level 3 Measured at Fair Value on Recurring Basis	The following tables present additional information about Level 3 servicing assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2014 and December 31, 2013 (in thousands):


		Servicing				Servicing
		Assets				Liabilities
	Fair value at December 31, 2012	$	—			$	—
	Additions, included in Other revenue (expense)		587				1,273
	Changes in fair value, included in Servicing fees		(53	)			(337	)

	Fair value at December 31, 2013	$	534			$	936

	Additions, included in Other revenue (expense)		2,152				5,721
	Changes in fair value, included in Servicing fees		(1,264	)			(2,684	)

	Total adjustments included in Net revenue		888				3,037
	Additions, included in Deferred revenue		759				—

	Fair value at December 31, 2014	$	2,181			$	3,973

Property_Equipment_and_Softwar1

Property, Equipment and Software, net (Tables)	12 Months Ended
Property, Equipment and Software, net (Tables)	Dec. 31, 2014
Property, Equipment and Software	Property, equipment and software consist of the following (in thousands):


	December 31,	2014			2013
	Internally developed software	$	16,023		$	4,188
	Computer equipment		7,929			4,019
	Leasehold improvements		4,802			2,700
	Purchased software		3,326			913
	Furniture and fixtures		2,405			836
	Construction in progress		549			1,978
	Other		—			26

	Total property, equipment and software		35,034			14,660
	Accumulated depreciation and amortization		(7,983	)		(2,065	)

	Property, equipment and software, net	$	27,051		$	12,595

Other_Assets_Tables

Other Assets (Tables)	12 Months Ended
Other Assets (Tables)	Dec. 31, 2014
Other Assets	Other assets consist of the following (in thousands):


	December 31,	2014		2013
	Prepaid expenses	$	6,807	$	3,546
	Deferred acquisition compensation		2,695		—
	Loan servicing assets at fair value		2,181		534
	Accounts receivable		1,744		439
	Deposits		657		193
	Receivable from investors		155		18,116
	Tenant improvement receivable		—		504
	Other		93		589

	Total other assets	$	14,332	$	23,921

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	12 Months Ended
Goodwill and Intangible Assets (Tables)	Dec. 31, 2014
Schedule of Goodwill	Goodwill consists of the following (in thousands):


	Balance at December 31, 2013	$	—
	Acquisition of Springstone		72,592

	Balance at December 31, 2014	$	72,592

Schedule of Intangible Assets	Intangible assets as of December 31, 2014 are as follows (in thousands, except years):


		Gross		Accumulated			Net
		Carrying		Amortization			Carrying
		Value					Value
	Customer relationships	$	39,500	$	(3,700	)	$	35,800
	Technology		400		(93	)		307
	Brand name		300		(105	)		195

	Total intangible assets subject to amortization	$	40,200	$	(3,898	)	$	36,302

Schedule of Expected Future Amortization Expense for Intangible Assets	The expected future amortization expense for intangible assets as of December 31, 2014 is as follows (in thousands):


	2015	$	5,286
	2016		4,801
	2017		4,286
	2018		3,871
	2019		3,499
	Thereafter		14,559

	Total	$	36,302

Accrued_Expenses_and_Other_Lia1

Accrued Expenses and Other Liabilities (Tables)	12 Months Ended
Accrued Expenses and Other Liabilities (Tables)	Dec. 31, 2014
Accrued Expenses and Other Liabilities	Accrued expenses and other liabilities consist of the following (in thousands):


	December 31,	2014		2013
	Accrued compensation	$	13,659	$	5,243
	Accrued service fees		6,220		2,057
	Loan servicing liability at fair value		3,973		936
	Contingent liabilities		1,995		—
	Deferred rent		1,377		653
	Deferred tax liability		1,332		—
	Transaction fee refund reserve		828		—
	Deferred revenue		759		—
	Early stock option exercise		392		—
	Other		1,085		239

	Total accrued expenses and other liabilities	$	31,620	$	9,128

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
Stockholders' Equity (Tables)	Dec. 31, 2014
Convertible Preferred Stock	Convertible Preferred Stock


		Designated Shares		Issued and		Aggregate Liquidation		Amount
		Designated Shares		Outstanding Shares		Preference		Amount
	Series A		68,025,100		66,100,340	$	17,599	$	17,402
	Series B		65,642,104		65,577,300		12,268		12,164
	Series C		62,486,436		62,486,436		24,490		24,388
	Series D		36,030,712		36,030,712		32,044		31,943
	Series E		14,285,712		10,000,000		17,500		17,347

	Total convertible preferred stock		246,470,064		240,194,788	$	103,901	$	103,244

Shares of Common Stock Reserved for Future Issuance	We have shares of common stock reserved for future issuance at December 31, 2014 as follows:



	Options outstanding		57,386,829
	Available for future stock option grants		36,561,469
	Available for ESPP		3,000,000
	Common stock warrants		36,824

	Total reserved for future issuance		96,985,122

Employee_Incentive_and_Retirem1

Employee Incentive and Retirement Plans (Tables)	12 Months Ended
Employee Incentive and Retirement Plans (Tables)	Dec. 31, 2014
Total Stock-Based Compensation Expense	Stock-based compensation expense was as follows for the periods presented (in thousands):


		Year Ended			Year Ended			9 Months Ended
		December 31,			December 31,			December 31,
		2014			2013			2012
	Stock options	$	27,100		$	6,283		$	1,110
	ESPP		104			—			—
	Stock issued related to acquisition		9,946			—			—

	Total stock-based compensation expense	$	37,150		$	6,283		$	1,110

Stock-Based Compensation Expense Recorded in Consolidated Statement of Operations	This stock-based compensation expense was recorded in the consolidated statement of operations as follows (in thousands):


		Year Ended			Year Ended			9 Months Ended
		December 31,			December 31,			December 31,
		2014			2013			2012
	Sales and marketing	$	6,058		$	1,313		$	216
	Origination and servicing		2,140			424			60
	General and administrative:
	Engineering and product development		5,311			2,171			406
	Other		23,641			2,375			428

	Total stock-based compensation expense	$	37,150		$	6,283		$	1,110

Black-Scholes Option Pricing Model to Estimate Fair Value of Stock Options Granted	We use the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:


		Year Ended			Year Ended			9 Months Ended
		December 31,			December 31,			December 31,
		2014			2013			2012
	Expected dividend yield		—			—			—
	Weighted-average assumed stock price volatility		53.5	%		59.1	%		63.5	%
	Weighted-average risk-free rate		1.88	%		1.46	%		1.01	%
	Weighted-average expected life (years)		6.35			6.3			6.28
Schedule of Options Activity	Options activity is summarized as follows:


		Options Outstanding
		Number of			Weighted-			Weighted-Average			Aggregate
		Shares			Average			Remaining			Intrinsic Value
					Exercise Price			Contractual Life			(in thousands)
					Per Share			(in years)
	Outstanding at December 31, 2013		43,314,728		$	0.94
	Options Granted		22,081,243		$	6.74
	Options Exercised		(6,037,666	)	$	0.59
	Options Forfeited/Expired		(1,971,476	)	$	2.8

	Outstanding at December 31, 2014		57,386,829		$	3.15			8.04		$	1,271,399

	Vested and expected to vest at December 31, 2014		54,738,680		$	3.03			7.98		$	1,224,605

	Exercisable at December 31, 2014		22,355,772		$	0.73			6.77		$	549,281

Employee Stock Purchase Plan
Black-Scholes Option Pricing Model to Estimate Fair Value of Stock Options Granted	We use the following assumptions in estimating the fair value of grants under the ESPP, which are derived using the same methodology applied to stock option assumptions:


	Year Ended December 31,	2014
	Expected dividend yield		—
	Weighted-average assumed stock price volatility		48.2	%
	Weighted-average risk-free rate		0.09	%
	Weighted-average expected life (years)		0.5

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2014
Schedule of Effective Income Tax Rate Reconciliation	Our effective tax rate differs from the statutory federal rate for the years ended December 31, 2014 and 2013 and the nine months ended December 31, 2012, as follows (in thousands):


		Year Ended						Year Ended					9 Months Ended
		December 31,						December 31,					December 31,
		2014						2013					2012
	Income (loss) before income taxes	$	(31,504	)				$	7,308				$	(4,238	)
	Tax at federal statutory rate	$	(10,711	)		34	%	$	2,485		34	%	$	(1,441	)	34	%
	State tax, net of federal tax benefit		98			(0.31	%)		563		7.7	%		(151	)	3.56	%
	Stock-based compensation expense		5,040			(16.00	%)		(593	)	(8.11	%)		(314	)	7.41	%
	Tax credits		—			0	%		(459	)	(6.28	%)		—		0	%
	Change in valuation allowance		6,858			(21.77	%)		(2,534	)	(34.67	%)		1,934		(45.63	%)
	Change in unrecognized tax benefit		—			0	%		518		7.09	%		150		(3.54	%)
	Other		105			(0.33	%)		20		0.27	%		(178	)	4.2	%

	Income tax expense	$	1,390			(4.41	%)	$	—		0	%	$	—		0	%


Deferred Tax Assets and Liabilities	The significant components of our deferred tax assets and liabilities at December 31, 2014 and 2013 are as follows (in thousands):


	December 31,	2014			2013
	Deferred tax assets
	Net operating loss carry-forwards	$	27,550		$	18,818
	Stock-based compensation		8,491			890
	Reserves and accruals		6,249			1,914
	Servicing fees		1,428			—
	Intangibles		1,161			—
	State credits		552			216
	Organizational and start-up costs		10			516

	Total deferred tax assets		45,441			22,354
	Valuation Allowance		(40,828	)		(22,338	)

	Deferred tax assets - net of valuation allowance		4,613			16

	Deferred tax liability
	Depreciation and amortization		(4,765	)		(16	)
	Goodwill		(1,180	)		—

	Total deferred tax liabilities		(5,945	)		(16	)

	Deferred tax liability - net	$	(1,332	)	$	—


Changes in Unrecognized Tax Benefit	The following is a reconciliation of our unrecognized tax benefits (in thousands):


		Year Ended			Year Ended			9 Months Ended
		December 31,			December 31,			December 31,
		2014			2013			2012
	Balance at the beginning of the period	$	1,080		$	367		$	240
	Additions (reductions) for tax positions related to the prior year		(589	)		523			—
	Additions for tax positions related to the current year		—			190			127

	Balance at the end of the period	$	491		$	1,080		$	367

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2014
Future Minimum Lease Payments	At December 31, 2014, the future minimum lease payments payable under the contracts for leased premises is as follows:


	Years Ended December 31,
	2015	$	5,277
	2016		6,679
	2017		6,985
	2018		7,282
	2019		6,585
	Thereafter		15,864

	Total	$	48,672

Springstone_Acquisition_Tables

Springstone Acquisition (Tables)	12 Months Ended
Springstone Acquisition (Tables)	Dec. 31, 2014
Preliminary Purchase Price Allocation	The preliminary purchase price allocation as of the acquisition date is as follows (in thousands):


			Fair Value
	Assets:
	Cash		$	2,256
	Restricted cash			1,581
	Property, equipment and software			366
	Other assets			599
	Identified intangible assets			40,200
	Goodwill			72,592
	Liabilities:
	Accounts payable			239
	Accrued expenses and other liabilities			5,536

	Total purchase consideration		$	111,819

Summary of Pro Forma Financial Information	The pro forma results presented below include interest expense on the debt financing, amortization of acquired intangible assets, compensation expense related to the post-acquisition compensation arrangements entered into with the continuing employees and tax expense (in thousands, except per share data):


	Years Ended December 31,		2014			2013
	Total net revenue		$	219,174		$	113,040
	Net loss (1)		$	(33,796	)	$	(17,592	)
	Basic net loss per share attributable to common stockholders		$	(0.45	)	$	(0.34	)
	Diluted net loss per share attributable to common stockholders		$	(0.45	)	$	(0.34	)

	-1	Net loss for the year ended December 31, 2013 includes $8.6 million of one-time acquisition-related costs and compensation expenses.

Basis_of_Presentation_Addition

Basis of Presentation - Additional Information (Detail) (USD $)	0 Months Ended			12 Months Ended
	Dec. 11, 2014	Sep. 05, 2014	Apr. 15, 2014	Dec. 31, 2014	Dec. 11, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Organization and Summary of Significant Accounting Policies Disclosure [Line Items]
Stockholders' equity				$973,219,000		$68,094,000	$52,210,000	$36,337,000
Shares outstanding, equity stock split ratio		2	2
Common stock, par value	$15			$0.01	$15	$0.01
Initial public offering, shares	66,700,000			827,680,000
Proceeds from initial public offering	1,000,000,000			827,680,000
Total Preferred Stock and Stockholders' Deficit
Organization and Summary of Significant Accounting Policies Disclosure [Line Items]
Stockholders' equity							($50,800,000)

Summary_of_Significant_Account2

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
Class of Stock [Line Items]
Highly liquid investments classified as cash equivalent, maturity period	3 months
Maximum period for loan classified as non-accrual loan	120 days
Stock awards, vesting period	4 years
Computer Software, Intangible Asset
Class of Stock [Line Items]
Intangible assets, useful life	3 years
Minimum
Class of Stock [Line Items]
Property and equipment, estimated useful life	2 years
Maximum
Class of Stock [Line Items]
Property and equipment, estimated useful life	5 years

Basic_and_Diluted_Net_Income_L

Basic and Diluted Net Income (Loss) per Share (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Components Of Basic And Diluted Earning Per Share [Line Items]
Net income (loss)	($4,238)	($32,894)	$7,308
Less: Net income allocated to participating securities			-7,117	[1]
Net income (loss) available to common stockholders	($4,238)	($32,894)	$191
Weighted average common shares - Basic	41,359,676	75,573,742	51,557,136
Weighted average effect of dilutive securities:
Stock Options			28,542,404
Warrants			1,327,436
Weighted average common shares - Diluted	41,359,676	75,573,742	81,426,976
Basic net loss per share attributable to common stockholders	($0.10)	($0.44)	$0
Diluted net loss per share attributable to common stockholders	($0.10)	($0.44)	$0

[1]	In a period with net income, both earnings and dividends (if any) are allocated to participating securities. In a period with a net loss, only dividends (if any) are allocated to participating securities.

Loans_and_Notes_and_Certificat

Loans and Notes and Certificates (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$2,798,505	$1,829,042
Fair value	2,813,618	1,839,990
Fair Value, Measurements, Recurring \| Notes And Certificates At Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal balance outstanding, notes and certificates	2,851,837	1,859,982
Net fair value adjustments, notes and certificates	-38,219	-19,992
Fair value	2,813,618	1,839,990
Fair Value, Measurements, Recurring \| Loans at Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal balance outstanding, loans	2,836,729	1,849,042
Net fair value adjustments, loans	-38,224	-20,000
Fair value	$2,798,505	$1,829,042

Loans_Notes_and_Certificates_a2

Loans, Notes and Certificates, and Loan Servicing Rights - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Number of loans, 90 days or more past due	1,797	989
Total outstanding principal balance of loans that were 90 days past due	19.8	10.2
Aggregate adverse fair value adjustments 90 days or more past due	18.8	9.1
Fair Value of loans that were 90 days or more past due	1	1.1
Number of loans, over 120 days past due	125	111
Total outstanding principal balance of loans that were 120 days past due	1.4	1.1
Aggregate adverse fair value adjustments 120 days or more past due	1.3	0.9
Fair value of financing receivable held as assets over 120 days past due	0.1	0.2
Notes And Certificates At Fair Value
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Payment frequency for the debt instrument	Monthly	Monthly
Debt instrument, interest rate, effective percentage rate range, minimum	5.79%	5.42%
Debt instrument, interest rate, effective percentage rate range, maximum	29.90%	26.06%
Debt instrument, maturity date, description	Maturity dates through December 2019.	Maturity dates through December 2018
Notes And Certificates At Fair Value \| Minimum
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Notes and certificates term	12 months	36 months
Notes And Certificates At Fair Value \| Maximum
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Notes and certificates term	60 months	60 months
Loan Servicing Rights
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Payment frequency for the debt instrument	Monthly	Monthly
Debt instrument, interest rate, effective percentage rate range, minimum	5.90%	6.00%
Debt instrument, interest rate, effective percentage rate range, maximum	33.15%	26.06%
Debt instrument, maturity date, description	Maturity dates through December 2019	Maturity dates through December 2018
Principal balance of underlying loan servicing rights	1,872.40	406.5
Loan Servicing Rights \| Minimum
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Notes and certificates term	12 months	36 months
Loan Servicing Rights \| Maximum
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Notes and certificates term	60 months	60 months

Loans_Loan_Servicing_Rights_Re

Loans, Loan Servicing Rights, Related Notes and Certificates (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$2,798,505	$1,829,042
Servicing assets	2,181	534
Total assets	2,800,686	1,829,576
Notes and certificates	2,813,618	1,839,990
Servicing liabilities	3,973	936
Total liabilities	2,817,591	1,840,926
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	2,798,505	1,829,042
Servicing assets	2,181	534
Total assets	2,800,686	1,829,576
Notes and certificates	2,813,618	1,839,990
Servicing liabilities	3,973	936
Total liabilities	$2,817,591	$1,840,926

Quantitative_Information_about

Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Fair Value Inputs [Abstract]
Cumulative prepayments	20.00%
Market servicing rates (% per annum on unpaid principal balance)	0.50%
Minimum
Fair Value Inputs [Abstract]
Market servicing rates (% per annum on unpaid principal balance)	0.40%
Maximum
Fair Value Inputs [Abstract]
Market servicing rates (% per annum on unpaid principal balance)	0.70%
Fair Value, Inputs, Level 3 \| Minimum \| Loans, Notes & Certificates
Fair Value Inputs [Abstract]
Discount rates	5.20%	5.90%
Net cumulative expected losses	0.30%	2.10%
Fair Value, Inputs, Level 3 \| Minimum \| Servicing Asset/Liability
Fair Value Inputs [Abstract]
Discount rates	5.30%	6.10%
Net cumulative expected losses	0.30%	2.10%
Cumulative prepayments	16.50%
Market servicing rates (% per annum on unpaid principal balance)	0.50%	0.40%
Fair Value, Inputs, Level 3 \| Maximum \| Loans, Notes & Certificates
Fair Value Inputs [Abstract]
Discount rates	17.40%	15.90%
Net cumulative expected losses	22.00%	23.70%
Fair Value, Inputs, Level 3 \| Maximum \| Servicing Asset/Liability
Fair Value Inputs [Abstract]
Discount rates	23.70%	15.90%
Net cumulative expected losses	22.00%	23.70%
Cumulative prepayments	26.70%
Market servicing rates (% per annum on unpaid principal balance)	0.70%	0.40%
Fair Value, Inputs, Level 3 \| Weighted Average \| Loans, Notes & Certificates
Fair Value Inputs [Abstract]
Discount rates	10.10%	10.20%
Net cumulative expected losses	10.00%	10.10%
Fair Value, Inputs, Level 3 \| Weighted Average \| Servicing Asset/Liability
Fair Value Inputs [Abstract]
Discount rates	10.70%	10.00%
Net cumulative expected losses	10.20%	9.60%
Cumulative prepayments	20.00%
Market servicing rates (% per annum on unpaid principal balance)	0.50%	0.40%

Additional_Information_about_L

Additional Information about Loans, Notes and Certificates Measured at Fair Value on Recurring Basis (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Loans, notes and certificates measured at fair value on recurring basis
Loans, Fair value, Beginning Balance	$1,829,042	$781,215
Loans, Purchases of loans	3,886,427	2,064,628
Loans, Issuances of notes and certificates	0	0
Loans, Principal payments	-1,730,045	-446,224
Loans, Whole loan sales	-1,054,357	-511,232
Loans, Recoveries from sale and collection of charged-off loans	-7,960	-1,716
Loans, Carrying value before fair value adjustments	2,923,107	1,886,671
Loans,Fair value adjustments, included in net income (loss)	-124,602	-57,629
Loans, Fair value, Ending Balance	2,798,505	1,829,042
Notes and Certificates, Fair value, Beginning Balance	1,839,990	785,316
Notes and Certificates, Purchases of loans	0	0
Notes and Certificates, Issuances of notes and certificates	2,156,019	1,618,269
Notes and Certificates, Principal payments	0	0
Notes and Certificates, Whole loan sales	-1,049,982	-504,330
Notes and Certificates, Recoveries and sale of charged-off loans	-7,929	-1,669
Notes and Certificates, Carrying value before fair value adjustments	2,938,098	1,897,586
Notes and Certificates,Fair value adjustments, included in net income (loss)	-124,480	-57,596
Notes and Certificates, Fair value, Ending Balance	$2,813,618	$1,839,990

Additional_Information_about_S

Additional Information about Servicing Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing Assets, Fair value, Beginning Balance	$534
Total adjustments included in Net revenue	-1,647	-534
Servicing Assets, Fair value, Ending Balance	2,181	534
Servicing Liabilities, Fair value, Beginning Balance	936
Total adjustments included in Net revenue	3,037	936
Servicing Liabilities, Fair value, Ending Balance	3,973	936
Fair Value, Measurements, Recurring
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing Assets, Fair value, Beginning Balance	534
Changes in fair value, included in Servicing fees	-1,264	-53
Total adjustments included in Net revenue	888
Servicing Assets, Fair value, Ending Balance	2,181	534
Servicing Liabilities, Fair value, Beginning Balance	936
Additions, included in Other revenue (expense)	5,721	1,273
Changes in fair value, included in Servicing fees	-2,684	-337
Total adjustments included in Net revenue	3,037
Servicing Liabilities, Fair value, Ending Balance	3,973	936
Fair Value, Measurements, Recurring \| Deferred Revenue
Servicing Asset at Fair Value, Amount [Roll Forward]
Additions, included in Other revenue (expense)	759
Fair Value, Measurements, Recurring \| Other Revenue (expense)
Servicing Asset at Fair Value, Amount [Roll Forward]
Additions, included in Other revenue (expense)	$2,152	$587

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Market servicing rates of products on outstanding principal	0.50%
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Market servicing rates of products on outstanding principal	0.40%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Market servicing rates of products on outstanding principal	0.70%

Additional_Information_about_S1

Additional Information about Servicing Assets and Liabilities Measured Using Different Market Servicing Rates and Different Prepayment (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Servicing Asset at Fair Value, Amount [Roll Forward]
Weighted average market servicing rate assumptions	0.50%
Weighted average cumulative prepayment assumptions	20.00%
Servicing rate increase to 0.60%
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing assets	($915)
Servicing rate decrease to 0.40%
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing assets	965
25% increase in cumulative prepayments
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing assets	-65
25% decrease in cumulative prepayments
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing assets	67
Fair Value, Measurements, Recurring
Servicing Asset at Fair Value, Amount [Roll Forward]
Weighted average market servicing rate assumptions	0.50%
Servicing assets	-1,264	-53
Servicing Liabilities	-2,684	-337
Weighted average cumulative prepayment assumptions	20.00%
Fair Value, Measurements, Recurring \| Servicing rate increase to 0.60%
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing Liabilities	1,416
Fair Value, Measurements, Recurring \| Servicing rate decrease to 0.40%
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing Liabilities	-1,366
Fair Value, Measurements, Recurring \| 25% increase in cumulative prepayments
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing Liabilities	-228
Fair Value, Measurements, Recurring \| 25% decrease in cumulative prepayments
Servicing Asset at Fair Value, Amount [Roll Forward]
Servicing Liabilities	$231

Property_Equipment_and_Softwar2

Property, Equipment and Software (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Internally developed software	$16,023	$4,188
Computer equipment	7,929	4,019
Leasehold improvements	4,802	2,700
Purchased software	3,326	913
Furniture and fixtures	2,405	836
Construction in progress	549	1,978
Other		26
Total property, equipment and software	35,034	14,660
Accumulated depreciation and amortization	-7,983	-2,065
Property, equipment and software, net	$27,051	$12,595

Property_Equipment_and_Softwar3

Property, Equipment and Software, net - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$236,000	$10,258,000	$1,663,000
Property, Equipment and Software
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	200,000	6,400,000	1,700,000
General and Administrative
Property, Plant and Equipment [Line Items]
Impairment expense		$500,000

Other_Assets_Detail

Other Assets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Assets [Abstract]
Other assets	$14,332	$23,921
Prepaid Expenses
Other Assets [Abstract]
Other assets	6,807	3,546
Deferred Acquisition Compensation
Other Assets [Abstract]
Other assets	2,695
Loan Servicing Assets at Fair Value
Other Assets [Abstract]
Other assets	2,181	534
Accounts Receivable
Other Assets [Abstract]
Other assets	1,744	439
Deposits
Other Assets [Abstract]
Other assets	657	193
Receivable from Investors
Other Assets [Abstract]
Other assets	155	18,116
Tenant Improvement Receivable
Other Assets [Abstract]
Other assets		504
Other
Other Assets [Abstract]
Other assets	$93	$589

Schedule_of_Goodwill_Detail

Schedule of Goodwill (Detail) (USD $)	9 Months Ended	12 Months Ended
Schedule of Goodwill (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Beginning balance
Acquisition of Springstone	0	72,592,000	0
Ending balance		$72,592,000

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment of goodwill		$0
Good will	0	72,592,000	0
Intangible assets	0		0
Amortization expense	$0	$3,900,000	$0
Weighted-average amortization period for total intangibles		13 years 9 months 18 days
Customer Relationships
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, amortized period		14 years
Technology
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, amortized period		3 years
Brand Name
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, amortized period		2 years

Schedule_of_Intangible_Assets_

Schedule of Intangible Assets (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$40,200
Accumulated Amortization	-3,898
Net Carrying Value	36,302
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	39,500
Accumulated Amortization	-3,700
Net Carrying Value	35,800
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	400
Accumulated Amortization	-93
Net Carrying Value	307
Brand Name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	300
Accumulated Amortization	-105
Net Carrying Value	$195

Schedule_of_Expected_Future_Am

Schedule of Expected Future Amortization Expense for Intangible Assets (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
2015	$5,286
2016	4,801
2017	4,286
2018	3,871
2019	3,499
Thereafter	14,559
Net Carrying Value	$36,302

Accrued_Expenses_and_Other_Lia2

Accrued Expenses and Other Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Liabilities Disclosure Abstract
Accrued compensation	$13,659	$5,243
Accrued service fees	6,220	2,057
Loan servicing liability at fair value	3,973	936
Contingent liabilities	1,995
Deferred rent	1,377	653
Deferred tax liability	1,332
Transaction fee refund reserve	828
Deferred revenue	759
Early stock option exercise	392
Other	1,085	239
Total accrued expenses and other liabilities	$31,620	$9,128

Longterm_Debt_Additional_Infor

Long-term Debt - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
Long-term Debt - Additional Information (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Apr. 16, 2014
Debt Instrument [Line Items]
Total interest expense	$56,642,000	$356,615,000	$187,447,000
Term Loan
Debt Instrument [Line Items]
Amount of Term loan				50,000,000
Credit agreement issuance date		16-Apr-14
Interest expense including debt issuance cost		2,300,000
Debt issuance cost, Incurred		1,200,000
Debt discount cost		200,000
Total interest expense		$900,000
Term loan, weighted average interest rate		2.59%

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended	1 Months Ended
	Dec. 11, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 16, 2014	Apr. 17, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Common stock, par value	$15	$0.01	$0.01			$0.01
Proceeds from initial public offering, gross	$1,000,000,000	$827,680,000
Capital stock, shares authorized				910,000,000	622,614,174
Common stock, shares authorized		900,000,000	900,000,000			360,000,000
Preferred stock, shares authorized		10,000,000	10,000,000			246,470,064
Convertible preferred stock conversion basis		One-for-one basis
Convertible preferred stock converted to common stock		249,601,435	249,601,435
IPO
Class of Stock [Line Items]
Common stock, shares			66,700,000
Common stock, par value		$15	$15
Proceeds from initial public offering, gross			1,000,000,000
Proceeds from initial public offering, net			827,700,000
Series F Convertible Preferred Stock
Class of Stock [Line Items]
Common stock, shares		6,390,556
Preferred stock, par value		$0.01	$0.01
Aggregate gross proceeds from preferred stock issuance		$64,803,000
Common stock, conversion basis		On a one-for-one basis, as adjusted from time to time pursuant to the anti-dilution provisions of our Restated Certificate of Incorporation.
Capital stock, shares authorized					622,614,174	606,470,064
Common stock, shares authorized		372,000,000	372,000,000
Preferred stock, shares authorized		250,614,174	250,614,174
Common Stock
Class of Stock [Line Items]
Common stock, shares		59,000,000
Common stock, par value		$0.01	$0.01

Convertible_Preferred_Stock_De

Convertible Preferred Stock (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Convertible preferred stock, shares authorized	10,000,000	246,470,064
Issued and Outstanding Shares		240,194,788
Convertible preferred stock, aggregate liquidation preference		$103,901
Preferred stock		103,244
Series A Convertible Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares authorized		68,025,100
Issued and Outstanding Shares		66,100,340
Convertible preferred stock, aggregate liquidation preference		17,599
Preferred stock		17,402
Series B Convertible Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares authorized		65,642,104
Issued and Outstanding Shares		65,577,300
Convertible preferred stock, aggregate liquidation preference		12,268
Preferred stock		12,164
Series C Convertible Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares authorized		62,486,436
Issued and Outstanding Shares		62,486,436
Convertible preferred stock, aggregate liquidation preference		24,490
Preferred stock		24,388
Series D Convertible Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares authorized		36,030,712
Issued and Outstanding Shares		36,030,712
Convertible preferred stock, aggregate liquidation preference		32,044
Preferred stock		31,943
Series E Convertible Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares authorized		14,285,712
Issued and Outstanding Shares		10,000,000
Convertible preferred stock, aggregate liquidation preference		17,500
Preferred stock		$17,347

Shares_of_Common_Stock_Reserve

Shares of Common Stock Reserved for Future Issuance (Detail)	Dec. 31, 2014
Class of Stock [Line Items]
Options outstanding	54,738,680
Total reserved for future issuance	96,985,122
Stock Option
Class of Stock [Line Items]
Options outstanding	57,386,829
Total reserved for future issuance	36,561,469
Employee Stock Purchase Plans
Class of Stock [Line Items]
Total reserved for future issuance	3,000,000
Common stock warrants
Class of Stock [Line Items]
Total reserved for future issuance	36,824

Total_StockBased_Compensation_

Total Stock-Based Compensation Expense (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$1,110	$37,150	$6,283
Springstone Financial, Llc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		9,946
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,110	27,100	6,283
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$104

StockBased_Compensation_Expens

Stock-Based Compensation Expense Recorded in Consolidated Statement of Operations (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$1,110	$37,150	$6,283
Sales and Marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	216	6,058	1,313
Origination And Servicing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	60	2,140	424
General and Administrative \| Engineering And Product Development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	406	5,311	2,171
General and Administrative \| Other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$428	$23,641	$2,375

Employee_Incentive_and_Retirem2

Employee Incentive and Retirement Plans (Detail)	12 Months Ended
Employee Incentive and Retirement Plans (Detail)	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options to purchase common stock granted under the 2007 Plan	57,386,829	43,314,728
Stock awards, vesting period	4 years
Equity Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans	2
Equity Incentive Plan Two Thousand Seven
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options to purchase common stock granted under the 2007 Plan	1,561,469
Equity Incentive Plan Twenty Fourteen [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares available for future grants	36,561,469
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, vesting period	4 years
Percentage of option vested at one year anniversary	25.00%
Vesting method	Options generally vest over a four year period with 25% vesting at the end of one year and the remainder vesting quarterly thereafter.
Stock Option \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration in period from the date of grant	10 years

BlackScholes_Option_Pricing_Mo

Black-Scholes Option Pricing Model to Estimate Fair Value of Stock Options Granted (Detail)	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected dividend yield		0.00%
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected dividend yield	0.00%	0.00%	0.00%
Weighted average assumed stock price volatility	63.50%	53.50%	59.10%
Weighted average risk-free rate	1.01%	1.88%	1.46%
Weighted average expected life (years)	6 years 3 months 11 days	6 years 4 months 6 days	6 years 3 months 18 days

StockBased_Compensation_and_Ot

Stock-Based Compensation and Other Employee Benefit Plans - Additional Information (Detail) (USD $)	0 Months Ended	9 Months Ended	12 Months Ended		0 Months Ended
	Dec. 11, 2014	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Apr. 17, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield			0.00%
Amount of cash or other dividends			$0
Option granted to purchase of common stock		15,244,944	22,081,243	12,707,000
Options granted, weighted average exercise price		$0.60	$6.74	$2.44
Common stock, Weighted average grant date fair value per share		$0.35	$4.62	$2.71
Options granted, total estimated fair value		10,600,000	102,100,000	34,400,000
Options to purchase shares		8,635,712	6,037,666	8,931,876
Total intrinsic value of options exercised		3,800,000	48,600,000	26,200,000
Total fair value of stock options vested		7,100,000	19,600,000	4,500,000
Expense related to accelerated vesting of stock options			3,000,000
Unrecognized compensation cost			114,200,000
Unrecognized compensation cost expected period for recognition			3 years 4 months 24 days
Income tax expense (benefit) from share based compensation			0
Income tax expense (benefit) from exercised stock options			0
Employee stock purchase plan, offering period	6 months
Total shares available for future issuance			96,985,122
Vesting period for compensation arrangement			4 years
Employer 401(k) plan match to employee's eligible earnings, percentage			3.00%
Employer maximum annual match per employee for 401(k) plan			5,000
Employer 401 (k) total match expense			900,000
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deductions percentage	15.00%
Percentage of fair market value of common stock	85.00%
Series F Convertible Preferred Stock \| Springstone Financial, Llc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Business acquisition, shares consideration			25,000,000
Business acquisition, value of shares placed in third party escrow to secure retention of key employees			22,100,000		22,100,000
Vesting period for compensation arrangement			3 years		3 years
Developing software
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, capitalized amount		$0	$1,900,000	$200,000
Employee Stock Purchase Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield			0.00%
Total shares available for future issuance			3,000,000
Issuance of common stock in connection with employee stock purchase plan (in shares)			0

Schedule_of_Options_Activity_D

Schedule of Options Activity (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balances, December 31, 2013, Number of Shares		43,314,728
Options Granted, Number of Shares	15,244,944	22,081,243	12,707,000
Options Exercised, Number of Shares	-8,635,712	-6,037,666	-8,931,876
Options Forfeited or expired, Number of Shares		-1,971,476
Balances, December 31, 2014, Number of Shares		57,386,829	43,314,728
Vested and expected to vest at December 31, 2014, Number of Shares		54,738,680
Exercisable at December 31, 2014, Number of Shares		22,355,772
Balances, December 31, 2013, Weighted Average Exercise Price Per Share		$0.94
Options Granted, Weighted Average Exercise Price Per Share	$0.60	$6.74	$2.44
Options Exercised, Weighted Average Exercise Price Per Share		$0.59
Options Forfeited or expired, Weighted Average Exercise Price Per Share		$2.80
Balances, December 31, 2014, Weighted Average Exercise Price Per Share		$3.15	$0.94
Vested and expected to vest at December 31, 2014, Weighted Average Exercise Price Per Share		$3.03
Exercisable at December 31, 2014, Weighted Average Exercise Price Per Share		$0.73
Outstanding at December 31, 2014, Weighted-Average Remaining Contractual Life (in years)		8 years 15 days
Vested and expected to vest at December 31, 2014, Weighted-Average Remaining Contractual Life (in years)		7 years 11 months 23 days
Exercisable at December 31, 2014, Weighted-Average Remaining Contractual Life (in years)		6 years 9 months 7 days
Outstanding at December 31, 2014, Aggregate Intrinsic Value		$1,271,399
Vested and expected to vest at December 31, 2014, 2014, Aggregate Intrinsic Value		1,224,605
Exercisable at December 31, 2014, Aggregate Intrinsic Value		$549,281

BlackScholes_Option_Pricing_Mo1

Black-Scholes Option Pricing Model to Estimate Fair Value of Stock Options Granted under ESPP (Detail)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.00%
Employee Stock Purchase Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.00%
Weighted-average assumed stock price volatility	48.20%
Weighted-average risk-free rate	0.09%
Weighted-average expected life (years)	6 months

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
Income Taxes - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Summary Of Net Deferred Tax Assets [Line Items]
Income tax expense (benefit)	$1,390,000
Valuation allowance	40,828,000	22,338,000
Accrued interest or penalties associated with unrecognized tax benefits	0
Federal
Summary Of Net Deferred Tax Assets [Line Items]
Net federal operating loss	68,700,000
State and Local Jurisdiction
Summary Of Net Deferred Tax Assets [Line Items]
Net federal operating loss	61,500,000
Research and Development \| Federal
Summary Of Net Deferred Tax Assets [Line Items]
Research and development tax credit carry forward	300,000
Research and Development \| State and Local Jurisdiction
Summary Of Net Deferred Tax Assets [Line Items]
Research and development tax credit carry forward	$200,000

Reconciliation_of_Income_Tax_R

Reconciliation of Income Tax Rate (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Effective Income Tax Rate Reconciliation, Amount
Income (loss) before income taxes	($4,238)	($31,504)	$7,308
Tax at federal statutory rate	-1,441	-10,711	2,485
State tax, net of federal tax benefit	-151	98	563
Stock-based compensation expense	-314	5,040	-593
Tax credits			-459
Change in valuation allowance	1,934	6,858	-2,534
Change in unrecognized tax benefit	150		518
Other	-178	105	20
Income tax expense		$1,390
Tax at federal statutory rate	34.00%	34.00%	34.00%
State tax, net of federal tax benefit	3.56%	-0.31%	7.70%
Stock-based compensation expense	7.41%	-16.00%	-8.11%
Tax credits	0.00%	0.00%	-6.28%
Change in valuation allowance	-45.63%	-21.77%	-34.67%
Change in unrecognized tax benefit	-3.54%	0.00%	7.09%
Other	4.20%	-0.33%	0.27%
Income tax expense	0.00%	-4.41%	0.00%

Deferred_Tax_Assets_and_Liabil

Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets
Net operating loss carryforwards	$27,550	$18,818
Stock-based compensation	8,491	890
Reserves and accruals	6,249	1,914
Servicing fees	1,428
Intangibles	1,161
State credits	552	216
Organizational and start-up costs	10	516
Total deferred tax assets	45,441	22,354
Valuation Allowance	-40,828	-22,338
Deferred tax assets - net of valuation allowance	4,613	16
Deferred tax liability
Depreciation and amortization	-4,765	-16
Goodwill	-1,180
Total deferred tax liabilities	-5,945	-16
Deferred tax liability - net	($1,332)

Unrecognized_Tax_Benefit_Detai

Unrecognized Tax Benefit (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Schedule of Unrecognized Tax Benefits [Line Items]
Balance at the beginning of the period	$240	$1,080	$367
Additions (reductions) for tax positions related to the prior year		-589	523
Additions for tax positions related to the current year	127		190
Balance at the end of the period	$367	$491	$1,080

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
		D
		Loan
Commitments and Contingencies [Line Items]
Rental expense	$600,000	$3,700,000	$1,900,000
Sublease rental expense	500,000	0	600,000
Minimum rental expense	100,000	3,300,000	1,300,000
Security deposit made under lease agreement, cash		600,000
Security deposit made under lease agreement		200,000
Unfunded loan balance		10,300,000
Number of unfunded loans		1,061
Date of fully funded loans		7-Jan-15
Amount committed to purchase under the agreement		4,100,000	0
Contingent Loan Purchase Commitment limit remaining amount		10,600,000
Maximum cash pledged		5,000,000
Pledged and restricted to support contingent obligation		3,400,000	3,400,000
Loans, ownership description		Our loan account program agreement with our primary issuing bank, WebBank, a Utah-chartered industrial bank that handles a variety of consumer and commercial financing programs, was modified such that WebBank retains ownership of the loans facilitated through our marketplace for two business days before selling the loans to us. WebBank earns interest related to such loans during the two business days it owns the loans.
Number of business days		2
Maximum
Commitments and Contingencies [Line Items]
Amount committed to purchase under the agreement		$16,000,000
San Francisco
Commitments and Contingencies [Line Items]
Lease agreement expiration date		30-Jun-22
Lease agreement renewal term		5 years
Lease agreement, leased area		141,000
Westborough
Commitments and Contingencies [Line Items]
Lease agreement expiration date		30-Jan-20
Lease agreement, leased area		20,000

Future_Minimum_Lease_Payments_

Future Minimum Lease Payments (Detail) (USD $)	Dec. 31, 2014
Operating Leased Assets [Line Items]
2015	$5,277
2016	6,679
2017	6,985
2018	7,282
2019	6,585
Thereafter	15,864
Total	$48,672

Segment_Reporting_Additional_I

Segment Reporting - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
	Segment
Segment Reporting Information [Line Items]
Number of reportable segments	1

Springstone_Acquisition_Additi

Springstone Acquisition - Additional Information (Detail) (USD $)	9 Months Ended	12 Months Ended		0 Months Ended	9 Months Ended
	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Apr. 17, 2014	Dec. 31, 2014
Business Acquisition [Line Items]
Business acquisition, amount of cash paid		$109,464,000
Vesting period for compensation arrangement		4 years
Acquisition related costs reported in general and administrative expense	0	2,300,000	0
Series F Convertible Preferred Stock
Business Acquisition [Line Items]
Business acquisition, Values of shares of Series F convertible preferred stock given along with cash		2,762,000
Springstone Financial, Llc
Business Acquisition [Line Items]
Business acquisition, date of acquisition		17-Apr-14
Business acquisition, name of acquired entity		Springstone
Business acquisition, percentage of voting interests acquired				100.00%
Business acquisition, purchase price of acquired entity				111,800,000
Business acquisition, amount of cash paid				109,000,000
Business acquisition, consideration placed in third party escrow to secure retention of key employees				25,600,000
Cash consideration held in escrow subject to vesting condition				3,500,000
Business acquisition, cash placed in third party escrow to secure indemnification obligations				19,000,000
Indemnification escrow holding period				15 months
Transactions costs paid				2,400,000
Revenue					15,300,000
Springstone Financial, Llc \| Series F Convertible Preferred Stock
Business Acquisition [Line Items]
Business acquisition, Values of shares of Series F convertible preferred stock given along with cash				2,800,000
Business acquisition, value of shares placed in third party escrow to secure retention of key employees		$22,100,000		$22,100,000	$22,100,000
Vesting period for compensation arrangement		3 years		3 years

Preliminary_Purchase_Price_All

Preliminary Purchase Price Allocation (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Apr. 17, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Apr. 17, 2014
Assets:
Goodwill	$72,592
Springstone Financial, Llc
Assets:
Cash			2,256
Restricted cash			1,581
Property, equipment and software			366
Other assets			599
Identified intangible assets			40,200
Goodwill			72,592
Liabilities:
Accounts payable			239
Accrued expenses and other liabilities			5,536
Total purchase consideration			$111,819

Summary_of_Pro_Forma_Financial

Summary of Pro Forma Financial Information (Detail) (Springstone Financial, Llc, USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Springstone Financial, Llc
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total net revenue	$219,174		$113,040
Net loss	($33,796)	[1]	($17,592)	[1]
Basic net loss per share attributable to common stockholders	($0.45)		($0.34)
Diluted net loss per share attributable to common stockholders	($0.45)		($0.34)

[1]	Net loss for the year ended December 31, 2013 includes $8.6 million of one-time acquisition-related costs and compensation expenses.

Summary_of_Pro_Forma_Financial1

Summary of Pro Forma Financial Information (Parenthetical) (Detail) (Springstone Financial, Llc, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Springstone Financial, Llc
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
One-time acquisition-related costs and compensation expenses adjustments	$8.60

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts (Detail) (Allowance for Deferred Tax Assets, USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Allowance for Deferred Tax Assets
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$22,036	$22,338	$23,939
Additions Charged to Expenses	1,934	6,857
Additions Charged to Other Accounts		11,633	933
Deductions	31		2,534
Balance at End of Period	$23,939	$40,828	$22,338