LendingClub (LC) 10-Q 8 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Entity Small Business	false
Entity Emerging Growth Company	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	LC
Entity Registrant Name	LENDINGCLUB CORPORATION
Entity Central Index Key	0001409970
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		431,922,251

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents		$ 402,311	$ 372,974
Restricted cash (1)	[1]	167,954	271,084
Securities available for sale (includes $45,203 and $53,611 pledged as collateral at fair value, respectively)		197,509	170,469
Loans held for investment at fair value (1)	[1]	1,698,198	1,883,251
Loans held for investment by the Company at fair value (1)	[1]	8,757	2,583
Loans held for sale by the Company at fair value (1)	[1]	552,166	840,021
Accrued interest receivable (1)	[1]	19,657	22,255
Property, equipment and software, net		118,157	113,875
Intangible assets, net		17,108	18,048
Other assets (1)	[1]	235,264	124,967
Total assets		3,417,081	3,819,527
Liabilities and Equity
Accounts payable		24,804	7,104
Accrued interest payable (1)	[1]	14,929	19,241
Accrued expenses and other liabilities (1)	[1]	238,941	152,118
Payable to investors		72,175	149,052
Notes, certificates and secured borrowings at fair value (1)	[1]	1,703,226	1,905,875
Payable to securitization note holders (1)	[1]	233,269	256,354
Credit facilities and securities sold under repurchase agreements (1)	[1]	263,863	458,802
Total liabilities		2,551,207	2,948,546
Equity
Common stock, $0.01 par value; 900,000,000 shares authorized; 434,202,951 and 431,923,335 shares issued, respectively; 431,920,251 and 429,640,635 shares outstanding, respectively		4,342	4,319
Additional paid-in capital		1,417,364	1,401,937
Accumulated deficit		(537,662)	(517,727)
Treasury stock, at cost; 2,282,700 shares		(19,485)	(19,485)
Accumulated other comprehensive income		225	157
Total LendingClub stockholders’ equity		864,784	869,201
Noncontrolling interests		1,090	1,780
Total equity		865,874	870,981
Total liabilities and equity		$ 3,417,081	$ 3,819,527
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Restricted cash	[1]	$ 167,954	$ 271,084
Loans held for investment at fair value	[1]	1,698,198	1,883,251
Loans held for sale by the Company at fair value (1)	[1]	552,166	840,021
Accrued interest receivable	[1]	19,657	22,255
Other assets	[1]	235,264	124,967
Total assets of consolidated variable interest entities		3,417,081	3,819,527
Accrued interest payable	[1]	14,929	19,241
Accrued expenses and other liabilities	[1]	238,941	152,118
Notes, certificates and secured borrowings at fair value (1)	[1]	1,703,226	1,905,875
Payable to securitization note and residual certificate holders	[1]	233,269	256,354
Credit facilities and securities sold under repurchase agreements	[1]	263,863	458,802
Total liabilities of consolidated variable interest entities		2,551,207	2,948,546
Securities available for sale, pledged as collateral at fair value		$ 45,203	$ 53,611
Common stock, par value ($ per share)		$ 0.01	$ 0.01
Common stock, shares authorized		900,000,000	900,000,000
Common stock, shares issued		434,202,951	431,923,335
Common stock, shares outstanding		431,920,251	429,640,635
Treasury stock, shares		2,282,700	2,282,700
Consolidated VIEs
Restricted cash		$ 25,593	$ 43,918
Loans held for investment at fair value		539,694	642,094
Loans held for sale by the Company at fair value (1)		437,432	739,216
Accrued interest receivable		8,322	10,438
Other assets		2,513	2,498
Total assets of consolidated variable interest entities		1,013,554	1,438,164
Accrued interest payable		5,910	7,594
Accrued expenses and other liabilities		354	1,627
Notes, certificates and secured borrowings at fair value (1)		539,694	648,908
Payable to securitization note and residual certificate holders		233,269	256,354
Credit facilities and securities sold under repurchase agreements		122,396	306,790
Total liabilities of consolidated variable interest entities		$ 901,623	$ 1,221,273
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Net interest income and fair value adjustments:
Interest income		$ 100,172	$ 138,018
Interest expense		(75,360)	(110,843)
Net fair value adjustments		(34,729)	(28,713)
Net interest income and fair value adjustments		(9,917)	(1,538)
Gain on sales of loans		15,152	12,671
Net Investor Revenue	[1]	36,966	39,028
Other revenue		2,055	1,457
Total net revenue		174,418	151,667
Operating expenses:
Sales and marketing		66,623	57,517
Origination and servicing		28,273	22,645
Engineering and product development		42,546	36,837
Other general and administrative		56,876	52,309
Class action and regulatory litigation expense		0	13,500
Total operating expenses		194,318	182,808
Loss before income tax expense		(19,900)	(31,141)
Income tax expense		0	39
Consolidated net loss		(19,900)	(31,180)
Less: Income attributable to noncontrolling interests		35	1
LendingClub net loss		$ (19,935)	$ (31,181)
Net loss per share attributable to LendingClub: Basic ($ per share)		$ (0.05)	$ (0.07)
Net loss per share attributable to LendingClub: Diluted ($ per share)		$ (0.05)	$ (0.07)
Weighted-average common shares - Basic (shares)		430,544,355	418,299,301
Weighted-average common shares - Diluted (shares)		430,544,355	418,299,301
Transaction fees
Net revenue, fees		$ 135,397	$ 111,182
Investor fees
Net revenue, fees		$ 31,731	$ 27,895
[1]	See “Notes to Condensed Consolidated Financial Statements – Note 1. Basis of Presentation” for additional information.

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
LendingClub net loss	$ (19,935)	$ (31,181)
Other comprehensive income (loss), before tax:
Net unrealized gain (loss) on securities available for sale	68	22
Other comprehensive income (loss), before tax	68	22
Income tax effect	0	(19)
Other comprehensive income (loss), net of tax	68	41
Less: Other comprehensive income (loss) attributable to noncontrolling interests	0	(9)
LendingClub other comprehensive income (loss), net of tax	68	50
LendingClub comprehensive income (loss)	(19,867)	(31,131)
Comprehensive income (loss) attributable to noncontrolling interests	0	(9)
Total comprehensive income (loss)	$ (19,867)	$ (31,140)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Total Equity	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2017		417,473,846		2,282,700
Beginning balance at Dec. 31, 2017	$ 927,757	$ 4,198	$ 1,327,206	$ (19,485)	$ (5)	$ (389,419)	$ 922,495	$ 5,262
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation and related tax effects	20,024		20,024			0	20,024
Issuances under equity incentive plans, net of tax (in shares)		2,133,783
Issuances under equity incentive plans, net of tax	(439)	$ 21	(460)				(439)
Net unrealized gain on securities available for sale, net of tax	42				50		50	(8)
Dividends paid and return of capital to noncontrolling interests	(1,084)							(1,084)
Net loss	(31,181)					(31,181)	(31,181)	1
Net loss, including portion attributable to noncontrolling interest	(31,180)
Ending balance (in shares) at Mar. 31, 2018		419,607,629		2,282,700
Ending balance at Mar. 31, 2018	915,120	$ 4,219	1,346,770	$ (19,485)	45	(420,600)	910,949	4,171
Beginning balance (in shares) at Dec. 31, 2018		429,640,635		2,282,700
Beginning balance at Dec. 31, 2018	870,981	$ 4,319	1,401,937	$ (19,485)	157	(517,727)	869,201	1,780
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation and related tax effects	20,113		20,113			0	20,113
Issuances under equity incentive plans, net of tax (in shares)		2,279,616
Issuances under equity incentive plans, net of tax	(4,663)	$ 23	(4,686)				(4,663)
Net unrealized gain on securities available for sale, net of tax	68				68		68	0
Dividends paid and return of capital to noncontrolling interests	(725)						0	(725)
Net loss	(19,935)					(19,935)	(19,935)	35
Net loss, including portion attributable to noncontrolling interest	(19,900)
Ending balance (in shares) at Mar. 31, 2019		431,920,251		2,282,700
Ending balance at Mar. 31, 2019	$ 865,874	$ 4,342	$ 1,417,364	$ (19,485)	$ 225	$ (537,662)	$ 864,784	$ 1,090

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Consolidated net loss	$ (19,900)	$ (31,180)
Adjustments to reconcile consolidated net loss to net cash provided by operating activities:
Net fair value adjustments	34,729	28,713
Change in fair value of loan servicing assets and liabilities	11,001	5,248
Stock-based compensation, net	18,252	17,801
Depreciation and amortization	15,855	11,701
(Gain) Loss on sales of loans	(15,152)	(13,116)
Other, net	7,413	1,582
Purchase of loans held for sale	(1,406,584)	(1,597,816)
Principal payments received on loans held for sale	66,125	58,943
Proceeds from sales of whole loans	771,723	1,348,092
Purchase of loans held for sale by consolidated VIE	0	(270,770)
Proceeds from sale of securities by consolidated VIE, net of underwriting fees and costs	777,516	437,969
Net change in operating assets and liabilities:
Accrued interest receivable, net	(1,201)	5,961
Other assets	3,313	57,365
Accounts payable	16,810	(6,058)
Accrued interest payable	(4,312)	(7,482)
Accrued expenses and other liabilities	(31,598)	(33,254)
Net cash provided by operating activities	243,990	13,699
Cash Flows from Investing Activities:
Purchases of loans	(193,075)	(293,460)
Principal payments received on loans	342,672	504,618
Proceeds from recoveries and sales of charged-off loans	14,136	17,658
Purchases of securities available for sale	(39,639)	(32,346)
Proceeds from sales, maturities, redemptions and paydowns of securities available for sale	35,464	40,476
Proceeds from paydowns of asset-backed securities related to securitization notes and CLUB Certificates	17,482	6,339
Other investing activities	(4)	0
Purchases of property, equipment and software, net	(15,938)	(13,607)
Net cash provided by investing activities	161,098	229,678
Cash Flows from Financing Activities:
Change in payable to investors	(77,727)	(35,222)
Proceeds from issuance of notes and certificates	193,093	292,461
Repayments of secured borrowings	(20,313)	(47,545)
Principal payments on and retirements of notes and certificates	(340,160)	(456,157)
Payments on notes and certificates from recoveries/sales of related charged-off loans	(13,909)	(17,459)
Principal payments on securitization notes	(23,594)	(31,729)
Proceeds from credit facilities and securities sold under repurchase agreements	396,500	274,900
Principal payments on credit facilities and securities sold under repurchase agreements	(591,525)	(233,000)
Payment for debt issuance costs	(625)	(1,119)
Proceeds from issuances under equity incentive plans, net of tax	104	185
Return of capital to noncontrolling interests in consolidated VIE	(688)	(1,055)
Dividends paid to noncontrolling interests in consolidated VIE	(37)	(30)
Net cash used for financing activities	(478,881)	(255,770)
Net Decrease in Cash, Cash Equivalents and Restricted Cash	(73,793)	(12,393)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	644,058	644,289
Cash, Cash Equivalents and Restricted Cash, End of Period	570,265	631,896
Supplemental Cash Flow Information:
Cash paid for interest	80,456	116,273
Cash paid for operating leases included in the measurement of lease liabilities	4,285	0
Non-cash investing activity:
Accruals for property, equipment and software	3,863	956
Beneficial interests retained from securitization and CLUB Certificate transactions	$ 41,578	$ 26,639

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Statement of Cash Flows [Abstract]
Cash and cash equivalents		$ 402,311	$ 372,974
Restricted cash	[1]	167,954	271,084
Total cash, cash equivalents and restricted cash		$ 570,265	$ 644,058	$ 631,896	$ 644,289
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation LendingClub Corporation (LendingClub) operates an online lending marketplace platform that connects borrowers and investors. Various wholly-owned subsidiaries of LendingClub have been established to enter into warehouse credit agreements with certain lenders for secured credit facilities. Additionally, LendingClub has established various entities in connection with its role as the sponsor of asset-backed securitization transactions, which include transactions that provide accredited investors and qualified institutional buyers the opportunity to invest in a pool of unsecured personal whole loans in a certificated form (CLUB Certificates). Company-sponsored securitizations and CLUB Certificate transactions are collectively referred to as “structured program transactions.” LC Trust I (the LC Trust) is an independent Delaware business trust that acquires loans from LendingClub and holds them for the sole benefit of certain investors that have purchased trust certificates issued by the LC Trust that are related to specific underlying loans for the benefit of the investor. Springstone Financial, LLC (Springstone), is a wholly-owned subsidiary of LendingClub that facilitates the origination of education and patient finance loans by third-party issuing banks. The accompanying unaudited condensed consolidated financial statements include LendingClub, its subsidiaries (collectively referred to as the Company, we, or us) and consolidated variable interest entities (VIEs). Noncontrolling interests are reported as a separate component of consolidated equity from the equity attributable to LendingClub’s stockholders for all periods presented. All intercompany balances and transactions have been eliminated. These condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP) for interim financial information and, in the opinion of management, contain all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the results and financial position for the periods presented. These accounting principles require management to make certain estimates and assumptions that affect the amounts in the accompanying financial statements. These estimates and assumptions are inherently subjective in nature and actual results may differ from these estimates and assumptions, and the differences could be material. Results reported in the interim periods are not necessarily indicative of the results for the full year or any other interim period. Certain prior-period amounts have been reclassified to conform to the current period presentation. In the first quarter of 2019, the Company presented a new sub-total caption called “Net investor revenue” on its Condensed Consolidated Statements of Operations and also reordered the presentation of certain of its existing captions. The Company believes this new presentation allows shareholders a view of net investor revenue and our capital markets activity, which includes net interest income and fair value adjustments of loans and securities available for sale, gain on sales of loans invested in by the Company and investor fees from servicing of loans. This change in presentation had no impact on prior period amounts presented. The Company presents loans under a number of different captions to align the assets to their associated liabilities, if any. “Loans held for investment at fair value” are loans which are related to the Company’s retail notes, certificates and secured borrowings program. The Company is not exposed to market risk, interest rate risk or credit risk on these loans and all loan cash flows flow directly to the retail note, certificate and secured borrowing owners. The associated liability for this loan category is included in the caption “Notes, certificates and secured borrowings at fair value.” Loans included in “Loans held for investment by the Company at fair value” and “Loans held for sale by the Company at fair value” are loans which the Company has purchased and from which the Company earns interest income and records net fair value adjustments in earnings for changes in the valuation of loans. The accompanying interim condensed consolidated financial statements and these related notes should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 (Annual Report) filed on February 20, 2019.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The Company’s significant accounting policies are discussed in “ Part II – Item 8 – Financial Statements and Supplementary Data – Note 2. Summary of Significant Accounting Policies ” in the Annual Report. There have been no changes to these significant accounting policies for the first quarter of 2019 , except as noted below. Adoption of New Accounting Standards The Company adopted the following accounting standards during the first quarter of 2019 : ASU 2016-02, Leases (Topic 842), requires lessees to record on their balance sheets a lease liability for the obligation to make lease payments and a right-of-use (ROU) asset for the right to use the underlying asset for the lease term. The Company adopted Topic 842 as of January 1, 2019 and has elected not to restate comparative periods presented in the condensed consolidated financial statements. The Company has chosen not to elect the practical expedients permitted under the transition guidance within the new standard, which among other things, permits entities to carry forward their historical lease identification. The Company has made an accounting policy election to not recognize lease liabilities and ROU assets for short-term leases, which are leases with initial terms of 12 months or less and for which there is not a purchase option that is reasonably certain to be exercised. All leases within the Company’s portfolio are classified as operating leases. Adoption of Topic 842 had an impact on the Company’s Condensed Consolidated Balance Sheets but did not have an impact on the Company’s Condensed Consolidated Statements of Operations or Condensed Consolidated Statements of Cash Flows . The most significant impact was the recognition of ROU assets and lease liabilities of $ 95.2 million and $110.1 million , respectively, with no cumulative effect in retained earnings. The difference between the ROU assets and lease liabilities is the unamortized balance of deferred rent, which prior to January 1, 2019, was included as a separate liability within Accrued expenses and other liabilities. The operating lease expenses are included in Other general and administrative expense and sublease income is recorded in Other revenue in the Company’s Condensed Consolidated Statements of Operations . The Company included the disclosures required by ASU 2016-02 in “ Note 17. Leases .” New Accounting Standards Not Yet Adopted Updates to new accounting standards issued and not yet adopted are as follows: In June 2016, the FASB amended guidance related to impairment of financial instruments as part of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which will be effective on January 1, 2020. The guidance replaces the incurred loss impairment methodology with an expected credit loss model for which a company recognizes an allowance based on the estimate of expected credit loss. The Company accounts for its loans at fair value through net income, which is outside the scope of Topic 326. For available for sale debt securities, the guidance will require recognition of expected credit losses by recognizing an allowance for credit losses when the fair value of the security is below amortized cost and the recognition of this allowance is limited to the difference between the security’s amortized cost basis and fair value. The Company has created a working group consisting of key stakeholders from finance to implement the targeted amendments to the available for sale debt securities impairment model. The Company is evaluating the impact this ASU will have on its financial position, results of operations, and cash flows. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement , which modifies the disclosure requirements on fair value measurements by removing, modifying, or adding certain disclosures. The ASU eliminates such disclosures as the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy and valuation processes for Level 3 fair value measurements. The ASU adds new disclosure requirements for Level 3 measurements. The new guidance is effective on January 1, 2020 and permits early adoption of either the entire standard or only the provisions that eliminate or modify the requirements. The Company is evaluating the impact this ASU will have on its disclosures. In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other – Internal-Use Software – (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract , which requires a customer in a hosting arrangement that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to capitalize as assets or expense as incurred. The standard is effective on January 1, 2020, with early adoption permitted. The amendments in this ASU can be applied either retrospectively or prospectively to all implementation costs after the date of adoption. The Company is evaluating the impact this ASU will have on its financial position, results of operations, and cash flows.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The Company’s revenue from contracts with customers includes transaction fees and referral fees. Referral fees are presented as a component of “Other revenue” in the Condensed Consolidated Statements of Operations . The following tables present the Company’s revenue from contracts with customers, disaggregated by revenue source for services transferred over time, for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Transaction fees $ 135,397 $ 111,182 Referral fees 695 836 Total revenue from contracts with customers $ 136,092 $ 112,018 Revenues are recognized when control of the promised services is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those services. For the first quarters of 2019 and 2018 , the Company did not have any revenue from contracts with customers for services transferred at a point of time. For additional detail on the Company’s accounting policy regarding revenue recognition, see “ Part II – Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements – Note 2. Summary of Significant Accounting Policies ” in the Annual Report. The Company recognizes transaction fees at the time it receives such fees. Referral fees are received after the Company satisfies its performance obligation. As of March 31, 2019 and December 31, 2018 , accounts receivable from these fees were $0.2 million and $0.5 million , respectively. The Company had no bad debt expense for the first quarters of 2019 and 2018 . The Company had no contract assets, contract liabilities, or deferred contract costs recorded as of both March 31, 2019 and December 31, 2018 . Additionally, the Company did not recognize any revenue from performance obligations related to prior periods (for example, due to changes in transaction price) for the first quarters of 2019 and 2018 .

Net Loss Per Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss Per Share The following table details the computation of the Company’s basic and diluted net loss per share: Three Months Ended 2019 2018 LendingClub net loss $ (19,935 ) $ (31,181 ) Weighted-average common shares – Basic 430,544,355 418,299,301 Weighted-average common shares – Diluted 430,544,355 418,299,301 Net loss per share attributable to LendingClub: Basic $ (0.05 ) $ (0.07 ) Diluted $ (0.05 ) $ (0.07 )

Securities Available for Sale

Securities Available for Sale	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Securities Available for Sale	Securities Available for Sale The amortized cost, gross unrealized gains and losses, and fair value of securities available for sale as of March 31, 2019 and December 31, 2018 , were as follows: March 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value CLUB Certificate asset-backed securities (1) $ 67,869 $ 70 $ (178 ) $ 67,761 Securitized asset-backed senior securities (1)(2) 59,749 330 — 60,079 Certificates of deposit 17,729 — — 17,729 Corporate debt securities 14,778 12 — 14,790 Asset-backed securities 13,631 1 (1 ) 13,631 Securitized asset-backed subordinated residual certificates (1) 11,550 194 (80 ) 11,664 Commercial paper 11,355 — — 11,355 Other securities 500 — — 500 Total securities available for sale $ 197,161 $ 607 $ (259 ) $ 197,509 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securitized asset-backed senior securities (1)(2) $ 56,363 $ 188 $ (62 ) $ 56,489 CLUB Certificate asset-backed securities (1) 48,505 150 (225 ) 48,430 Corporate debt securities 17,339 1 (12 ) 17,328 Certificates of deposit 14,929 — — 14,929 Securitized asset-backed subordinated residual certificates (1) 11,602 249 (2 ) 11,849 Asset-backed securities 11,232 — (7 ) 11,225 Commercial paper 9,720 — — 9,720 Other securities 499 — — 499 Total securities available for sale $ 170,189 $ 588 $ (308 ) $ 170,469 (1) As of March 31, 2019 , and December 31, 2018 , $138.1 million and $115.1 million , respectively, of the asset-backed securities related to structured program transactions at fair value are subject to restrictions on transfer pursuant to the Company's obligations as a “sponsor” under the U.S. Risk Retention Rules (as more fully described in “ Part I – Item 1A. Risk Factors – Risk retention rules may increase our compliance costs, impair our liquidity and otherwise adversely affect our operating results ” in the Annual Report.). (2) Includes $45.2 million and $53.6 million of securities available for sale pledged as collateral at fair value as of March 31, 2019 , and December 31, 2018 , respectively. The senior securities and the subordinated residual certificates related to Company-sponsored securitization transactions and the retained portion of any CLUB Certificates are accounted for as securities available for sale, as described in “ Note 7. Securitizations and Variable Interest Entities .” A summary of securities available for sale with unrealized losses as of March 31, 2019 and December 31, 2018 , aggregated by period of continuous unrealized loss, is as follows: Less than 12 months 12 months or longer Total March 31, 2019 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Asset-backed securities related to structured program transactions $ 10,892 $ (258 ) $ — $ — $ 10,892 $ (258 ) Asset-backed securities 3,906 (1 ) — — 3,906 (1 ) Total securities with unrealized losses (1) $ 14,798 $ (259 ) $ — $ — $ 14,798 $ (259 ) Less than 12 months Total December 31, 2018 Fair Unrealized Fair Unrealized Fair Unrealized Asset-backed securities related to structured program transactions $ 49,047 $ (285 ) $ 1,745 $ (4 ) $ 50,792 $ (289 ) Corporate debt securities 14,538 (12 ) — — 14,538 (12 ) Asset-backed securities 11,208 (7 ) — — 11,208 (7 ) Total securities with unrealized losses (1) $ 74,793 $ (304 ) $ 1,745 $ (4 ) $ 76,538 $ (308 ) (1) The number of investment positions with unrealized losses at March 31, 2019 and December 31, 2018 totaled 25 and 56 , respectively. During the first quarters of 2019 and 2018 , the Company recognized $1.2 million and $1.3 million , respectively, in other-than-temporary impairment charges on its securitized asset-backed subordinated residual certificates and CLUB Certificate asset-backed securities. There were no credit losses recognized into earnings for other-than-temporarily impaired securities held by the Company during the first quarters of 2019 and 2018 for which a portion of the impairment was previously recognized in other comprehensive income. The contractual maturities of securities available for sale at March 31, 2019 , were as follows: Amortized Cost Fair Value Within 1 year: Certificates of deposit $ 17,729 $ 17,729 Corporate debt securities 14,778 14,790 Commercial paper 11,355 11,355 Asset-backed securities 10,376 10,376 Other securities 500 500 Total 54,738 54,750 After 1 year through 5 years: Asset-backed securities 3,255 3,255 Total 3,255 3,255 Asset-backed securities related to structured program transactions 139,168 139,504 Total securities available for sale $ 197,161 $ 197,509 During the first quarter s of 2019 and 2018 , the Company and Consumer Loan Underlying Bond Depositor LLC (Depositor), a subsidiary of the Company, sold a combined $785.5 million and $440.6 million , respectively, in asset-backed securities related to structured program transactions. There were no realized gains or losses related to such sales. For further information, see “ Note 7. Securitizations and Variable Interest Entities .” Proceeds from other sales of securities available for sale during the first quarter of 2019 were $3.1 million . There were no other sales of securities available for sale during the first quarter of 2018 .

Loans Held For Investment, Loan

Loans Held For Investment, Loans Held For Sale, Notes, Certificates and Secured Borrowings	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Loans Held For Investment, Loans Held For Sale, Notes, Certificates and Secured Borrowings	Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings Loans Held for Investment, Notes, Certificates and Secured Borrowings The Company issues member payment dependent notes and the LC Trust issues certificates as a means to allow investors to invest in the corresponding loans. At March 31, 2019 and December 31, 2018 , loans held for investment, notes, certificates and secured borrowings measured at fair value on a recurring basis were as follows: Loans Held for Investment Notes, Certificates and Secured Borrowings March 31, December 31, March 31, December 31, Aggregate principal balance outstanding $ 1,805,078 $ 2,013,438 $ 1,805,078 $ 2,033,258 Net fair value adjustments (106,880 ) (130,187 ) (101,852 ) (127,383 ) Fair value $ 1,698,198 $ 1,883,251 $ 1,703,226 $ 1,905,875 At March 31, 2019 , $59.4 million of the aggregate principal balance outstanding and a fair value of $56.5 million included in “Loans Held for Investment” were pledged as collateral for secured borrowings. At December 31, 2018 , $81.1 million of the aggregate principal balance outstanding and a fair value of $76.5 million included in “Loans Held for Investment” were pledged as collateral for secured borrowings. See “ Note 14. Secured Borrowings ” for additional information. The following table provides the balances of notes, certificates and secured borrowings at fair value at the end of the periods indicated: March 31, December 31, Notes $ 1,101,961 $ 1,176,333 Certificates 539,694 648,908 Secured borrowings 61,571 80,634 Total notes, certificates and secured borrowings $ 1,703,226 $ 1,905,875 Loans Invested in by the Company At March 31, 2019 and December 31, 2018 , loans invested in by the Company for which there were no associated notes, certificates or secured borrowings (with the exception of $254.8 million and $286.3 million in loans at fair value in a consolidated securitization trust, respectively) were as follows: Loans Invested in by the Company Loans Held for Investment Loans Held for Sale Total March 31, December 31, March 31, December 31, March 31, December 31, Aggregate principal balance outstanding $ 11,233 $ 3,518 $ 584,872 $ 869,715 $ 596,105 $ 873,233 Net fair value adjustments (2,476 ) (935 ) (32,706 ) (29,694 ) (35,182 ) (30,629 ) Fair value $ 8,757 $ 2,583 $ 552,166 $ 840,021 $ 560,923 $ 842,604 The net fair value adjustments of $(35.2) million and $(30.6) million represent net unrealized losses recorded in earnings on loans invested in by the Company at March 31, 2019 and December 31, 2018 , respectively. Total fair value adjustments recorded in earnings on loans invested in by the Company of $(32.5) million during the first quarter of 2019 include net realized losses and changes in net unrealized losses. Net interest income earned on loans invested in by the Company during the first quarter of 2019 was $20.5 million . The Company used its own capital to purchase $843.9 million in loans during the first quarter of 2019 and sold $1.0 billion in loans during the first quarter of 2019 , of which $834.5 million was securitized or sold to series trusts in connection with the issuance of CLUB Certificates and $211.3 million was sold to whole loan investors. The aggregate principal balance outstanding of loans invested in by the Company was $596.1 million at March 31, 2019 , of which $314.0 million was held for sale primarily for future anticipated securitization and CLUB Certificate transactions and sales to loan investors and $270.9 million was related to the consolidation of a securitization trust. See “ Note 7. Securitizations and Variable Interest Entities ” for further discussion on the Company’s consolidated securitization trust and “ Note 8. Fair Value of Assets and Liabilities ” for a fair value rollforward of loans invested in by the Company for the first quarters of 2019 and 2018 . At March 31, 2019 and December 31, 2018 , $270.9 million and $294.8 million of the aggregate principal balance outstanding included in “Loans held for sale by the Company at fair value,” related to a consolidated securitization trust, was pledged as collateral for payables to securitization note holders, respectively. Additionally, at March 31, 2019 and December 31, 2018 , $193.0 million and $467.4 million of the aggregate principal balance outstanding included in “Loans held for sale by the Company at fair value” was pledged as collateral for the Company’s warehouse credit facilities, respectively. See “ Note 13. Debt ” for additional information related to these debt obligations. Loans that were 90 days or more past due (including non-accrual loans) were as follows: March 31, 2019 December 31, 2018 Loans held for investment and loans held for sale: Outstanding principal balance $ 16,400 $ 19,707 Net fair value adjustments (13,295 ) (16,166 ) Fair value $ 3,105 $ 3,541 Number of loans (not in thousands) 2,041 2,309 Loans invested in by the Company: Outstanding principal balance $ 2,491 $ 2,060 Net fair value adjustments (2,057 ) (1,710 ) Fair value $ 434 $ 350 Number of loans (not in thousands) 414 356

Securitizations and Variable In

Securitizations and Variable Interest Entities	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing [Abstract]
Securitization and Variable Interest Entities	Securitizations and Variable Interest Entities VIE Assets and Liabilities The Company has segregated its involvement with VIEs between consolidated VIEs and unconsolidated VIEs. The following tables provide the classifications of assets and liabilities on the Company’s Condensed Consolidated Balance Sheets for its transactions with VIEs at March 31, 2019 and December 31, 2018 . Additionally, the assets and liabilities in the table below include third-party assets and liabilities of consolidated and unconsolidated VIEs only and exclude intercompany balances that eliminate in consolidation: March 31, 2019 Consolidated VIEs Unconsolidated VIEs Total Assets Restricted cash $ 25,593 $ — $ 25,593 Securities available for sale at fair value — 139,504 139,504 Loans held for investment at fair value 539,694 — 539,694 Loans held for sale by the Company at fair value 437,432 — 437,432 Accrued interest receivable 8,322 911 9,233 Other assets 2,513 33,679 36,192 Total assets $ 1,013,554 $ 174,094 $ 1,187,648 Liabilities Accrued interest payable $ 5,910 $ — $ 5,910 Accrued expenses and other liabilities 354 — 354 Notes, certificates and secured borrowings at fair value 539,694 — 539,694 Payable to securitization note holders 233,269 — 233,269 Credit facilities and securities sold under repurchase agreements 122,396 — 122,396 Total liabilities 901,623 — 901,623 Total net assets $ 111,931 $ 174,094 $ 286,025 December 31, 2018 Consolidated VIEs Unconsolidated VIEs Total Assets Restricted cash $ 43,918 $ — $ 43,918 Securities available for sale at fair value — 116,768 116,768 Loans held for investment at fair value 642,094 — 642,094 Loans held for sale by the Company at fair value 739,216 — 739,216 Accrued interest receivable 10,438 1,214 11,652 Other assets 2,498 29,206 31,704 Total assets $ 1,438,164 $ 147,188 $ 1,585,352 Liabilities Accrued interest payable $ 7,594 $ — $ 7,594 Accrued expenses and other liabilities 1,627 — 1,627 Notes, certificates and secured borrowings at fair value 648,908 — 648,908 Payable to securitization note holders 256,354 — 256,354 Credit facilities and securities sold under repurchase agreements 306,790 57,012 363,802 Total liabilities 1,221,273 57,012 1,278,285 Total net assets $ 216,891 $ 90,176 $ 307,067 Consolidated VIEs The Company consolidates VIEs when it is deemed to be the primary beneficiary. The primary beneficiary is the party that has both the power to direct the activities that most significantly impact the VIE’s economic performance and the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to the VIE. In evaluating whether the Company is the primary beneficiary, the Company evaluates its economic interests in the entity. A consolidation analysis can generally be performed qualitatively; however, if it is not readily apparent that the Company is not the primary beneficiary, a quantitative analysis may also be performed. See “ Part II – Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements – Note 2. Summary of Significant Accounting Policies ” in the Annual Report for additional information. LC Trust I Certificates The Company established the LC Trust for the purpose of acquiring and holding loans for the sole benefit of certain investors that have purchased trust certificates issued by the LC Trust. The Company is obligated to ensure that the LC Trust meets minimum capital requirements with respect to funding the administrative activities and maintaining the operations of the LC Trust. Consolidated Securitizations On December 13, 2018, the Company consolidated a securitization trust because the Company was the primary beneficiary. As a result, the senior securities held by third-party investors were classified as “Payable to securitization note holders” in the Company’s Condensed Consolidated Balance Sheets as of December 31, 2018 . Additionally, the Company’s continued involvement includes loan servicing responsibilities for which it receives servicing fees over the life of the underlying loans. Warehouse Credit Facilities The Company established certain entities (deemed to be VIEs) to enter into warehouse credit facilities for the purpose of purchasing loans from LendingClub. See “ Part II – Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements – Note 14. Debt ” in the Annual Report for additional information. The following tables present a summary of financial assets and liabilities from the Company’s involvement with consolidated VIEs at March 31, 2019 and December 31, 2018 : March 31, 2019 Assets Liabilities Net Assets LC Trust certificates $ 546,313 $ (544,732 ) $ 1,581 Securitizations 271,755 (233,702 ) 38,053 Warehouse credit facilities 195,486 (123,189 ) 72,297 Total consolidated VIEs $ 1,013,554 $ (901,623 ) $ 111,931 December 31, 2018 Assets Liabilities Net Assets LC Trust certificates $ 657,339 $ (656,088 ) $ 1,251 Securitizations 297,821 (256,901 ) 40,920 Warehouse credit facility 483,004 (308,284 ) 174,720 Total consolidated VIEs $ 1,438,164 $ (1,221,273 ) $ 216,891 The creditors of the VIEs above have no recourse to the general credit of the Company as the primary beneficiary of the VIEs and the liabilities of the VIEs can only be settled by the respective VIE’s assets. Unconsolidated VIEs The Company’s transactions with unconsolidated VIEs include securitizations of unsecured personal whole loans, CLUB Certificate transactions, and sales of whole loans to VIEs. The Company has various forms of involvement with VIEs, including servicing of loans and holding senior or subordinated residual interests in the VIEs. The Company considers continued involvement in an unconsolidated VIE insignificant if it is the sponsor and servicer and does not hold other significant variable interests. In these instances, the Company’s involvement with the VIE is in the role as an agent and without significant participation in the economics of the VIE. In connection with these securitizations, as well as our whole loan sales and CLUB Certificate transactions, we made certain customary representations, warranties and covenants. See “ Part II – Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements – Note 2. Summary of Significant Accounting Policies ” in the Annual Report for additional information. Unconsolidated Securitizations The Company sponsors securitizations of unsecured personal whole loans through issuances of asset-backed securities, which are collateralized by unsecured personal whole loans that are contributed by the Company and third parties. In connection with these securitizations, the Company is the sponsor and establishes securitization trusts to purchase the loans from the Company and such third parties. The accounting for Company-sponsored securitizations is based on a primary beneficiary analysis to determine whether the underlying trusts should be consolidated. If the VIEs are not consolidated and the transfer of the loans from the Company to the securitization trust meets sale accounting criteria, then the Company will recognize a gain or loss on sales of loans. The net proceeds of the sale represent the fair value of any assets obtained or liabilities incurred as part of the transaction, including, but not limited to, servicing assets, retained securities, and recourse obligations. The assets are transferred into a trust such that the assets are legally isolated from the creditors of the Company and are not available to satisfy obligations of the Company. These assets can only be used to settle obligations of the underlying securitization trusts. The Company enters into separate servicing agreements with the VIEs and holds at least 5% of the beneficial interests issued by the VIEs to comply with regulatory risk retention rules. The beneficial interests retained by the Company consist of senior securities and subordinated residual certificates and are accounted for as securities available for sale. In the case of certain securitization transactions, the Company has also agreed to repurchase or substitute loans for which a borrower fails to make the first payment due under a loan. Unconsolidated CLUB Certificates The Company sponsors the sale of unsecured personal whole loans funded through the issuance of pass-through securities called CLUB Certificates, which are collateralized by loans transferred to the issuing VIE. The CLUB Certificate is an instrument that trades in the over-the-counter market with a CUSIP. The CLUB Certificate transaction typically involves the transfer of unsecured personal whole loans to a series of a master trust. The accounting for CLUB Certificates is based on a primary beneficiary analysis to determine whether the series trust should be consolidated. If the series trust is not consolidated and the transfer of the loans from the Company to the series trust meets sale accounting criteria, then the Company will recognize gain or loss on sales of loans. The net proceeds of the sale represent the fair value of any assets obtained or liabilities incurred as part of the transaction, including, but not limited to, servicing assets, retained securities, and recourse obligations. In addition, the Company enters into a servicing agreement with each applicable series trust and holds at least 5% of the beneficial interests issued by the series trust to comply with regulatory risk retention rules. The portion of the CLUB Certificates retained by the Company are accounted for as securities available for sale. Additionally, the Company’s continued involvement includes loan servicing responsibilities for which it receives servicing fees over the life of the underlying loans. Investment Fund The Company has an equity investment in a private fund (Investment Fund) that participates in a family of funds with other unrelated third parties. This family of funds purchases whole loans and interests in loans from the Company, as well as other assets from third parties unrelated to the Company. As of March 31, 2019 , the Company had an ownership interest of approximately 23% in the Investment Fund. The Company’s investment is deemed to be a variable interest in the Investment Fund because the Company shares in the expected returns and losses of the Investment Fund. At March 31, 2019 , the Company’s investment was $8.1 million , which is recognized in “Other assets” on the Company’s Condensed Consolidated Balance Sheets . The following tables summarize unconsolidated VIEs with which the Company has significant continuing involvement, but is not the primary beneficiary at March 31, 2019 and December 31, 2018 : March 31, 2019 Carrying Value Total VIE Assets Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Net Assets Securitizations $ 1,413,708 $ 71,743 $ 555 $ 12,761 $ — $ — $ 85,059 CLUB Certificates 1,375,940 67,761 356 12,861 — — 80,978 Investment Fund 35,059 — — 8,057 — — 8,057 Total unconsolidated VIEs $ 2,824,707 $ 139,504 $ 911 $ 33,679 $ — $ — $ 174,094 March 31, 2019 Maximum Exposure to Loss Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Total Exposure Securitizations $ 71,743 $ 555 $ 12,761 $ — $ — $ 85,059 CLUB Certificates 67,761 356 12,861 — — 80,978 Investment Fund — — 8,057 — — 8,057 Total unconsolidated VIEs $ 139,504 $ 911 $ 33,679 $ — $ — $ 174,094 December 31, 2018 Carrying Value Total VIE Assets Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Net Assets Securitizations $ 1,359,367 $ 68,338 $ 958 $ 11,838 $ — $ (57,012 ) $ 24,122 CLUB Certificates 973,815 48,430 256 9,115 — — 57,801 Investment Fund 35,157 — — 8,253 — — 8,253 Total unconsolidated VIEs $ 2,368,339 $ 116,768 $ 1,214 $ 29,206 $ — $ (57,012 ) $ 90,176 December 31, 2018 Maximum Exposure to Loss Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Total Exposure Securitizations $ 68,339 $ 958 $ 11,838 $ — $ — $ 81,135 CLUB Certificates 48,431 256 9,115 — — 57,802 Investment Fund — — 8,253 — — 8,253 Total unconsolidated VIEs $ 116,770 $ 1,214 $ 29,206 $ — $ — $ 147,190 “Total VIE Assets” represents the remaining principal balance of loans held by unconsolidated VIEs with respect to securitizations and CLUB Certificates, and the net assets held by the Investment Fund using the most current information available. “Securities Available for Sale,” “Accrued Interest Receivable,” “Other Assets” and “Accrued Expenses and Other Liabilities” are the balances in the Company’s Condensed Consolidated Balance Sheets related to its involvement with the unconsolidated VIEs. “Other Assets” includes the Company’s servicing assets and servicing receivables associated with loans transferred as part of securitizations and CLUB Certificates and the Company’s equity investment with respect to the Investment Fund. “Total Exposure” refers to the Company’s maximum exposure to loss from its involvement with unconsolidated VIEs. It represents estimated loss that would be incurred under severe, hypothetical circumstances, for which the Company believes the possibility is extremely remote, such as where the value of interests and any associated collateral declines to zero. Accordingly, this required disclosure is not an indication of expected losses. The following table summarizes activity related to the unconsolidated personal whole loan securitizations and personal whole loan CLUB Certificates with the transfers accounted for as a sale on the Company’s condensed consolidated financial statements for the first quarters of 2019 and 2018 : Three Months Ended March 31, 2019 2018 Personal Personal Whole Loan CLUB Certificates Personal Personal Whole Loan CLUB Certificates Principal derecognized from loans securitized or sold $ 293,419 $ 541,128 $ 355,248 $ 161,875 Net gains (losses) recognized from loans securitized or sold $ 2,932 $ 5,824 $ 3,097 $ 1,457 Fair value of senior securities and subordinated residual certificates retained upon settlement (1) $ 14,555 $ 26,787 $ 18,493 $ 8,102 Cash proceeds from loans securitized or sold $ 266,235 $ 513,885 $ 283,272 $ 154,839 Cash proceeds from servicing and other administrative fees on loans securitized or sold $ 3,570 $ 2,943 $ 2,350 $ 135 Cash proceeds for interest received on senior securities and subordinated residual certificates $ 1,439 $ 1,435 $ 296 $ 82 (1) For personal whole loan securitizations, the Company retained senior securities of $13.4 million and $15.1 million for the first quarters of 2019 and 2018 , respectively, and subordinated residual certificates of $1.1 million and $3.4 million for the first quarters of 2019 and 2018 , respectively. Off-Balance Sheet Loans Off-balance sheet loans primarily relate to structured program transactions for which the Company has some form of continuing involvement, including as servicer. Delinquent loans are comprised of loans 31 days or more past due, including non-accrual loans. For loans related to structured program transactions where servicing is the only form of continuing involvement, the Company would only experience a loss if it was required to repurchase a loan due to a breach in representations and warranties associated with its loan sale or servicing contracts. As of March 31, 2019 , the aggregate unpaid principal balance of the off-balance sheet loans pursuant to structured program transactions was $2.8 billion , of which $89.0 million was attributable to off-balance sheet loans that were 31 days or more past due. As of December 31, 2018 , the aggregate unpaid principal balance of the off-balance sheet loans pursuant to structured program transactions was $2.3 billion , of which $87.1 million was attributable to off-balance sheet loans that were 31 days or more past due. Retained Interests from Unconsolidated VIEs The Company and other investors in the subordinated interests issued by securitization trusts have rights to cash flows only after the investors holding the senior securities issued by the securitization trusts have first received their contractual cash flows. The investors and the securitization trusts have no direct recourse to the Company’s assets, and holders of the securities issued by the securitization trusts can look only to the assets of the securitization trusts that issued their securities for payment. The beneficial interests held by the Company and the Company’s MOA are subject principally to the credit and prepayment risk stemming from the underlying unsecured personal whole loans. See “ Note 8. Fair Value of Assets and Liabilities ” for additional information on the fair value sensitivity of asset-backed securities related to structured program transactions. Secured Borrowings In October 2017, LendingClub Asset Management, LLC (LCAM), a wholly-owned subsidiary of LendingClub that previously acted as the general partner for certain private funds, initiated the wind-down of six funds by redeeming the LC Trust certificates issued to the funds and transferring the loan participations underlying the redeemed certificates to third party investors. Certain of the loan participations for two of the funds transferred did not meet the definition of participating interests because the Company provided a credit support agreement under which the investor has a recourse to the Company for credit losses. The transfer of these loan participations from these two funds was accounted for as a secured borrowing and the underlying whole loans were not derecognized from the Company’s Condensed Consolidated Balance Sheets . The Company has elected the fair value option for the secured borrowings. As of March 31, 2019 , the fair value of the secured borrowings was $61.6 million secured by aggregate outstanding principal balance of $59.4 million included in “Loans held for investment at fair value” in the Condensed Consolidated Balance Sheets . As of December 31, 2018 , the fair value of the secured borrowings was $80.6 million secured by aggregate outstanding principal balance of $81.1 million included in “Loans held for investment at fair value” in the Condensed Consolidated Balance Sheets . Changes in the fair value of the secured borrowings are partially offset by the associated loan participations, and the net effect results in changes in fair value of the credit support agreement through earnings. As of March 31, 2019 and December 31, 2018 , the fair value of this credit support agreement was $5.0 million and $2.8 million . The fair value of the credit support agreement is equal to the present value of the probability-weighted estimate of expected payments over a range of loss scenarios. See “ Note 6. Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings ” for additional information.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities For a description of the fair value hierarchy and the Company’s fair value methodologies, see “ Part II – Item 8. Financial Statements and Supplementary Data – Note 2. Summary of Significant Accounting Policies ” in the Annual Report. The Company records certain assets and liabilities at fair value as listed in the following tables. Financial Instruments, Assets and Liabilities Recorded at Fair Value The following tables present the fair value hierarchy for assets and liabilities measured at fair value at March 31, 2019 and December 31, 2018 : March 31, 2019 Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Fair Value Assets: Loans held for investment $ — $ — $ 1,698,198 $ 1,698,198 Loans held for investment by the Company — — 8,757 8,757 Loans held for sale by the Company — — 552,166 552,166 Securities available for sale: Securitized asset-backed senior securities and subordinated residual certificates — 60,079 11,664 71,743 CLUB Certificate asset-backed securities — — 67,761 67,761 Certificates of deposit — 17,729 — 17,729 Corporate debt securities — 14,790 — 14,790 Asset-backed securities — 13,631 — 13,631 Commercial paper — 11,355 — 11,355 Other securities — 500 — 500 Total securities available for sale — 118,084 79,425 197,509 Servicing assets — — 71,848 71,848 Total assets $ — $ 118,084 $ 2,410,394 $ 2,528,478 Liabilities: Notes, certificates and secured borrowings $ — $ — $ 1,703,226 $ 1,703,226 Loan trailing fee liability — — 10,061 10,061 Total liabilities $ — $ — $ 1,713,287 $ 1,713,287 December 31, 2018 Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Assets: Loans held for investment $ — $ — $ 1,883,251 $ 1,883,251 Loans held for investment by the Company — — 2,583 2,583 Loans held for sale by the Company — — 840,021 840,021 Securities available for sale: Securitized asset-backed senior securities and subordinated residual certificates — 56,489 11,849 68,338 CLUB Certificate asset-backed securities — — 48,430 48,430 Corporate debt securities — 17,328 — 17,328 Certificates of deposit — 14,929 — 14,929 Asset-backed securities — 11,225 — 11,225 Commercial paper — 9,720 — 9,720 Other securities — 499 — 499 Total securities available for sale — 110,190 60,279 170,469 Servicing assets — — 64,006 64,006 Total assets $ — $ 110,190 $ 2,850,140 $ 2,960,330 Liabilities: Notes, certificates and secured borrowings $ — $ — $ 1,905,875 $ 1,905,875 Loan trailing fee liability — — 10,010 10,010 Total liabilities $ — $ — $ 1,915,885 $ 1,915,885 The Company has elected the fair value option for notes, certificates, secured borrowings, and the loan trailing fee liability. Changes in the fair value of these financial liabilities caused by a change in the Company’s risk are reported in other comprehensive income (OCI). For the first quarter of 2019 , the amount reported in OCI is zero because these financial liabilities are either payable only upon receipt of cash flows from underlying loans or secured by cash collateral. Financial instruments are categorized in the valuation hierarchy based on the significance of unobservable factors in the overall fair value measurement. Since the Company’s loans held for investment and related notes, certificates, and secured borrowings, loans held for sale, loan servicing rights, asset-backed securities related to structured program transactions, and loan trailing fee liability do not trade in an active market with readily observable prices, the Company uses significant unobservable inputs to measure the fair value of these assets and liabilities. These fair value estimates may also include observable, actively quoted components derived from external sources. As a result, changes in fair value for assets and liabilities within the Level 2 or Level 3 categories may include changes in fair value that were attributable to observable and unobservable inputs, respectively. The Company primarily uses a discounted cash flow model to estimate the fair value of Level 3 instruments based on the present value of estimated future cash flows. This model uses inputs that are inherently judgmental and reflect our best estimates of the assumptions a market participant would use to calculate fair value. The Company did not transfer any assets or liabilities in or out of Level 3 during the first quarter of 2019 or the year ended December 31, 2018 . Fair valuation adjustments are recorded through earnings related to Level 3 instruments for the first quarters of 2019 and 2018 . Certain unobservable inputs may (in isolation) have either a directionally consistent or opposite impact on the fair value of the financial instrument for a given change in that input. When multiple inputs are used within the valuation techniques, a change in one input in a certain direction may be offset by an opposite change from another input. Loans Held for Investment, Notes, Certificates and Secured Borrowings Significant Unobservable Inputs The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for loans held for investment, notes, certificates and secured borrowings at March 31, 2019 and December 31, 2018 : Loans Held for Investment, Notes, Certificates and Secured Borrowings March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Average Minimum Maximum Weighted- Average Discount rates 6.1 % 12.2 % 8.8 % 6.3 % 16.4 % 9.1 % Net cumulative expected loss rates (1) 2.8 % 36.4 % 12.6 % 2.8 % 36.9 % 12.8 % Cumulative expected prepayment rates (1) 28.0 % 35.8 % 31.4 % 27.8 % 40.3 % 31.2 % (1) Expressed as a percentage of the original principal balance of the loan, note, certificate or secured borrowing. Significant Recurring Level 3 Fair Value Input Sensitivity At March 31, 2019 and December 31, 2018 , the discounted cash flow methodology used to estimate the note, certificate and secured borrowings’ fair values used the same projected net cash flows as their related loans. As demonstrated by the following tables, the fair value adjustments for loans held for investment and loans held for sale were largely offset by the fair value adjustments of the notes, certificates and secured borrowings due to the payment dependent design of the notes, certificates and secured borrowings and because the principal balances of the loans were close to the combined principal balances of the notes, certificates and secured borrowings. Fair Value Reconciliation The following tables present additional information about Level 3 loans held for investment, loans held for sale, and notes, certificates and secured borrowings measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Loans Held for Investment Loans Held for Sale Notes, Certificates and Secured Borrowings Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2018 $ 2,013,438 $ (130,187 ) $ 1,883,251 $ — $ — $ — $ 2,033,258 $ (127,383 ) $ 1,905,875 Purchases 193,092 (21 ) 193,071 563,036 — 563,036 — — — Transfers (to) from loans held for investment and/or loans held for sale (223 ) — (223 ) — — — — — — Issuances — — — — — — 193,092 — 193,092 Sales — — — (563,036 ) (1,165 ) (564,201 ) — — — Principal payments and retirements (340,444 ) — (340,444 ) — — — (360,487 ) 14 (360,473 ) Charge-offs, net of recoveries (60,785 ) 46,876 (13,909 ) — — — (60,785 ) 46,876 (13,909 ) Change in fair value recorded in earnings — (23,548 ) (23,548 ) — 1,165 1,165 — (21,359 ) (21,359 ) Balance at March 31, 2019 $ 1,805,078 $ (106,880 ) $ 1,698,198 $ — $ — $ — $ 1,805,078 $ (101,852 ) $ 1,703,226 Loans Held for Investment Loans Held for Sale Notes, Certificates and Secured Borrowings Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2017 $ 3,141,391 $ (209,066 ) $ 2,932,325 $ — $ — $ — $ 3,161,080 $ (206,312 ) $ 2,954,768 Purchases 292,114 9 292,123 1,133,277 (1,772 ) 1,131,505 — — — Issuances — — — — — — 292,461 — 292,461 Sales — — — (1,133,277 ) 835 (1,132,442 ) — — — Principal payments and retirements (500,949 ) — (500,949 ) — — — (503,710 ) 8 (503,702 ) Charge-offs, net of recoveries (102,791 ) 85,332 (17,459 ) — — — (102,791 ) 85,332 (17,459 ) Change in fair value recorded in earnings — (70,627 ) (70,627 ) — 937 937 — (70,651 ) (70,651 ) Balance at March 31, 2018 $ 2,829,765 $ (194,352 ) $ 2,635,413 $ — $ — $ — $ 2,847,040 $ (191,623 ) $ 2,655,417 Loans Invested in by the Company Significant Unobservable Inputs The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for loans invested in by the Company at March 31, 2019 and December 31, 2018 : Loans Invested in by the Company March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 5.6 % 12.6 % 9.7 % 5.9 % 16.7 % 9.4 % Net cumulative expected loss rates (1) 2.8 % 37.0 % 14.2 % 2.6 % 36.8 % 13.2 % Cumulative expected prepayment rates (1) 27.2 % 41.0 % 32.7 % 27.0 % 45.5 % 32.5 % (1) Expressed as a percentage of the original principal balance of the loan. Significant Recurring Level 3 Fair Value Input Sensitivity The fair value sensitivity of loans invested in by the Company to adverse changes in key assumptions as of March 31, 2019 and December 31, 2018 , are as follows: March 31, December 31, Fair value of loans invested in by the Company $ 560,923 $ 842,604 Expected weighted-average life (in years) 1.5 1.4 Discount rates 100 basis point increase $ (6,793 ) $ (10,487 ) 200 basis point increase $ (13,424 ) $ (20,720 ) Expected credit loss rates on underlying loans 10% adverse change $ (8,579 ) $ (11,304 ) 20% adverse change $ (17,087 ) $ (22,504 ) Expected prepayment rates 10% adverse change $ (2,080 ) $ (2,422 ) 20% adverse change $ (4,117 ) $ (4,785 ) Fair Value Reconciliation The following tables present additional information about Level 3 loans invested in by the Company measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Loans Held for Investment by the Company Loans Held for Sale by the Company Total Loans Invested in by the Company Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2018 $ 3,518 $ (935 ) $ 2,583 $ 869,715 $ (29,694 ) $ 840,021 $ 873,233 $ (30,629 ) $ 842,604 Purchases 381 (379 ) 2 843,548 — 843,548 843,929 (379 ) 843,550 Transfers (to) from loans held for investment and/or loans held for sale 8,533 (1,471 ) 7,062 (8,310 ) 1,471 (6,839 ) 223 — 223 Sales — — — (1,045,880 ) 21,750 (1,024,130 ) (1,045,880 ) 21,750 (1,024,130 ) Principal payments and retirements (535 ) — (535 ) (67,818 ) — (67,818 ) (68,353 ) — (68,353 ) Charge-offs, net of recoveries (664 ) 437 (227 ) (6,383 ) 6,180 (203 ) (7,047 ) 6,617 (430 ) Change in fair value recorded in earnings — (128 ) (128 ) — (32,413 ) (32,413 ) — (32,541 ) (32,541 ) Balance at March 31, 2019 $ 11,233 $ (2,476 ) $ 8,757 $ 584,872 $ (32,706 ) $ 552,166 $ 596,105 $ (35,182 ) $ 560,923 Loans Held for Investment by the Company Loans Held for Sale by the Company Total Loans Invested in by the Company Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2017 $ 371,379 $ (10,149 ) $ 361,230 $ 242,273 $ (6,448 ) $ 235,825 $ 613,652 $ (16,597 ) $ 597,055 Purchases 1,496 (160 ) 1,336 791,675 (280 ) 791,395 793,171 (440 ) 792,731 Transfers (to) from loans held for investment and/or loans held for sale 106 — 106 (106 ) — (106 ) — — — Sales — — — (742,732 ) 10,048 (732,684 ) (742,732 ) 10,048 (732,684 ) Principal payments and retirements (32,194 ) — (32,194 ) (30,418 ) — (30,418 ) (62,612 ) — (62,612 ) Charge-offs, net of recoveries (1,172 ) 973 (199 ) (2,215 ) 2,203 (12 ) (3,387 ) 3,176 (211 ) Change in fair value recorded in earnings — (12,821 ) (12,821 ) — (15,656 ) (15,656 ) — (28,477 ) (28,477 ) Balance at March 31, 2018 $ 339,615 $ (22,157 ) $ 317,458 $ 258,477 $ (10,133 ) $ 248,344 $ 598,092 $ (32,290 ) $ 565,802 Asset-Backed Securities Related to Structured Program Transactions Significant Unobservable Inputs The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for asset-backed securities related to structured program transactions at March 31, 2019 and December 31, 2018 : Asset-Backed Securities Related to Structured Program Transactions March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 3.2 % 19.6 % 10.0 % 3.2 % 19.6 % 8.8 % Net cumulative expected loss rates (1) 8.3 % 43.5 % 20.0 % 6.3 % 43.9 % 18.4 % Cumulative expected prepayment rates (1) 18.1 % 34.1 % 28.7 % 21.0 % 33.0 % 30.1 % (1) Expressed as a percentage of the outstanding collateral balance. Significant Recurring Level 3 Fair Value Input Sensitivity The following tables present adverse changes to the fair value sensitivity of asset-backed securities related to structured program transactions to changes in key assumptions at March 31, 2019 and December 31, 2018 : March 31, 2019 Asset-Backed Securities Related to Structured Program Transactions Senior Securities Subordinated Residual Certificates CLUB Certificates Fair value of interests held $ 60,079 $ 11,664 $ 67,761 Expected weighted-average life (in years) 1.0 1.3 1.2 Discount rates 100 basis point increase $ (542 ) $ (141 ) $ (648 ) 200 basis point increase $ (1,067 ) $ (279 ) $ (1,280 ) Expected credit loss rates on underlying loans 10% adverse change $ — $ (1,679 ) $ (1,585 ) 20% adverse change $ — $ (3,092 ) $ (3,128 ) Expected prepayment rates 10% adverse change $ — $ (611 ) $ (414 ) 20% adverse change $ — $ (1,240 ) $ (793 ) December 31, 2018 Asset-Backed Securities Related to Structured Program Transactions Senior Securities Subordinated Residual Certificates CLUB Certificates Fair value of interests held $ 56,489 $ 11,849 $ 48,430 Expected weighted-average life (in years) 1.0 1.3 1.2 Discount rates 100 basis point increase $ (526 ) $ (149 ) $ (472 ) 200 basis point increase $ (1,032 ) $ (293 ) $ (932 ) Expected credit loss rates on underlying loans 10% adverse change $ — $ (1,573 ) $ (1,070 ) 20% adverse change $ — $ (3,159 ) $ (2,112 ) Expected prepayment rates 10% adverse change $ — $ (786 ) $ (291 ) 20% adverse change $ — $ (1,599 ) $ (562 ) Fair Value Reconciliation The following table presents additional information about Level 3 asset-backed subordinated residual certificates related to Company-sponsored securitization and CLUB Certificate transactions measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Fair value at beginning of period $ 60,279 $ 10,029 Additions 27,913 11,508 Redemptions — — Cash received (7,438 ) (174 ) Change in unrealized gain (loss) (166 ) 88 Other-than-temporary impairment (1,163 ) (1,322 ) Fair value at end of period $ 79,425 $ 20,129 Servicing Assets Significant Unobservable Inputs The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for servicing assets at March 31, 2019 and December 31, 2018 : Servicing Assets March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 5.9 % 14.8 % 8.7 % 4.8 % 16.7 % 9.0 % Net cumulative expected loss rates (1) 2.9 % 38.3 % 12.2 % 2.8 % 38.7 % 12.5 % Cumulative expected prepayment rates (1) 27.1 % 36.5 % 31.8 % 13.9 % 42.9 % 31.9 % Total market servicing rates (% per annum on outstanding principal balance) (2) 0.66 % 0.66 % 0.66 % 0.66 % 0.66 % 0.66 % (1) Expressed as a percentage of the original principal balance of the loan. (2) Includes collection fees estimated to be paid to a hypothetical third-party servicer. Significant Recurring Level 3 Fair Value Input Sensitivity The Company’s selection of the most representative market servicing rates for servicing assets is inherently judgmental. The Company reviews third-party servicing rates for its loans, loans in similar credit sectors, and market servicing benchmarking analyses provided by third-party valuation firms, when available. The table below shows the impact on the estimated fair value of servicing assets, calculated using different market servicing rate assumptions as of March 31, 2019 and December 31, 2018 : Servicing Assets March 31, December 31, 2018 Weighted-average market servicing rate assumptions 0.66 % 0.66 % Change in fair value from: Servicing rate increase by 0.10% $ (11,800 ) $ (10,878 ) Servicing rate decrease by 0.10% $ 11,806 $ 10,886 Fair Value Reconciliation The following table presents additional information about Level 3 servicing assets measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Fair value at beginning of period $ 64,006 $ 33,676 Issuances (1) 15,846 11,980 Change in fair value, included in investor fees (11,039 ) (5,606 ) Other net changes included in deferred revenue 3,035 834 Fair value at end of period $ 71,848 $ 40,884 (1) Represents the gains or losses on sales of the related loans. Loan Trailing Fee Liability Significant Unobservable Inputs The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for loan trailing fee liability at March 31, 2019 and December 31, 2018 : Loan Trailing Fee Liability March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 5.9 % 14.8 % 9.4 % 4.8 % 16.7 % 9.5 % Net cumulative expected loss rates (1) 2.9 % 38.2 % 14.2 % 2.8 % 38.7 % 14.0 % Cumulative expected prepayment rates (1) 27.6 % 41.1 % 32.3 % 16.5 % 43.1 % 32.2 % (1) Expressed as a percentage of the original principal balance of the loan. Significant Recurring Level 3 Fair Value Input Sensitivity The fair value sensitivity of the loan trailing fee liability to adverse changes in key assumptions would not result in a material impact on the Company’s financial position. Fair Value Reconciliation The following table presents additional information about Level 3 loan trailing fee liability measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Fair value at beginning of period $ 10,010 $ 8,432 Issuances 1,490 1,775 Cash payment of Loan Trailing Fee (1,969 ) (1,554 ) Change in fair value, included in Origination and Servicing 530 171 Fair value at end of period $ 10,061 $ 8,824 Financial Instruments, Assets, and Liabilities Not Recorded at Fair Value The following tables present the fair value hierarchy for financial instruments, assets, and liabilities not recorded at fair value at March 31, 2019 and December 31, 2018 : March 31, 2019 Carrying Amount Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Fair Value Assets: Cash and cash equivalents (1) $ 402,311 $ — $ 402,311 $ — $ 402,311 Restricted cash (1) 167,954 — 167,954 — 167,954 Servicer reserve receivable 406 — 406 — 406 Deposits 898 — 898 — 898 Total assets $ 571,569 $ — $ 571,569 $ — $ 571,569 Liabilities: Accrued expenses and other liabilities $ 19,838 $ — $ — $ 19,838 $ 19,838 Accounts payable 24,804 — 24,804 — 24,804 Payables to investors 72,175 — 72,175 — 72,175 Payable to securitization note holders 233,269 — 233,269 — 233,269 Credit facilities and securities sold under repurchase agreements 263,863 — 46,468 217,396 263,864 Total liabilities $ 613,949 $ — $ 376,716 $ 237,234 $ 613,950 (1) Carrying amount approximates fair value due to the short maturity of these financial instruments. December 31, 2018 Carrying Amount Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Fair Value Assets: Cash and cash equivalents (1) $ 372,974 $ — $ 372,974 $ — $ 372,974 Restricted cash (1) 271,084 — 271,084 — 271,084 Servicer reserve receivable 669 — 669 — 669 Deposits 1,093 — 1,093 — 1,093 Total assets $ 645,820 $ — $ 645,820 $ — $ 645,820 Liabilities: Accrued expenses and other liabilities $ 18,483 $ — $ — $ 18,483 $ 18,483 Accounts payable 7,104 — 7,104 — 7,104 Payables to investors 149,052 — 149,052 — 149,052 Payable to securitization note holders 256,354 — 256,354 — 256,354 Credit facilities and securities sold under repurchase agreements 458,802 — 57,012 401,790 458,802 Total liabilities $ 889,795 $ — $ 469,522 $ 420,273 $ 889,795 (1) Carrying amount approximates fair value due to the short maturity of these financial instruments.

Property, Equipment and Softwar

Property, Equipment and Software, net	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
Property, Equipment and Software, Net	Property, Equipment and Software, Net Property, equipment and software, net, consist of the following: March 31, December 31, Internally developed software (1) $ 149,882 $ 141,233 Leasehold improvements 32,178 31,109 Computer equipment 25,289 24,204 Purchased software 10,650 10,139 Furniture and fixtures 8,252 8,468 Construction in progress 7,173 4,106 Total property, equipment and software 233,424 219,259 Accumulated depreciation and amortization (115,267 ) (105,384 ) Total property, equipment and software, net $ 118,157 $ 113,875 (1) Includes $15.9 million and $10.3 million of development in progress as of March 31, 2019 and December 31, 2018 , respectively. Depreciation and amortization expense on property, equipment and software was $13.3 million and $10.3 million for the first quarters of 2019 and 2018 , respectively. The Company recorded impairment expense on its internally developed software of $1.6 million and $0.3 million for the first quarters of 2019 and 2018 , respectively. The Company records impairment expense on its internally developed software in “Engineering and product development” expense in the Condensed Consolidated Statements of Operations .

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Other Assets Other assets consist of the following: March 31, December 31, Operating lease assets (1) $ 107,455 $ — Loan servicing assets, at fair value (2) 71,848 64,006 Prepaid expenses 22,828 25,598 Accounts receivable 18,273 19,322 Other investments 8,507 8,503 Deferred financing costs 2,391 2,117 Servicer reserve receivable 406 669 Other 3,556 4,752 Total other assets $ 235,264 $ 124,967 (1) The Company adopted ASU 2016-02, Leases, as of January 1, 2019 and has elected not to restate comparative periods presented in the condensed consolidated financial statements. For additional information, see “ Note 2. Summary of Significant Accounting Policies ” and “ Note 17. Leases .” (2) Loans underlying loan servicing rights had a total outstanding principal balance of $11.8 billion and $10.9 billion as of March 31, 2019 and December 31, 2018 , respectively.

Intangible Assets

Intangible Assets	3 Months Ended
	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets Intangible assets net of accumulated amortization was $17.1 million and $18.0 million at March 31, 2019 and December 31, 2018 , respectively. Amortization expense associated with intangible assets for the first quarters of 2019 and 2018 was $0.9 million and $1.0 million , respectively.

Accrued Expenses and Other Liab

Accrued Expenses and Other Liabilities	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Accrued Expenses and Other Liabilities	Accrued Expenses and Other Liabilities Accrued expenses and other liabilities consist of the following: March 31, December 31, Operating lease liabilities (1) $ 122,667 $ — Accrued expenses 38,564 42,507 Transaction fee refund reserve 20,695 19,543 Accrued compensation 17,461 36,105 Contingent liabilities (2) 12,700 12,750 Deferred revenue 12,386 9,420 Loan trailing fee liability, at fair value 10,061 10,010 Payable to issuing banks 1,229 1,182 Deferred rent (1) — 16,211 Other 3,178 4,390 Total accrued expenses and other liabilities $ 238,941 $ 152,118 (1) The Company adopted ASU 2016-02, Leases, as of January 1, 2019 and has elected not to restate comparative periods presented in the condensed consolidated financial statements. As such, effective January 1, 2019, deferred rent is included within operating lease liabilities. For additional information, see “ Note 2. Summary of Significant Accounting Policies ” and “ Note 17. Leases .” (2) See “ Note 18. Commitments and Contingencies ” for further information.

Debt

Debt	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Debt	Debt Credit Facilities and Securities Sold Under Repurchase Agreements The Company may enter into arrangements in the ordinary course of business pursuant to which the Company can incur indebtedness. Below is a description of certain of these arrangements: Warehouse Credit Facilities The Company’s wholly-owned subsidiaries, Warehouse I, Warehouse II, and Warehouse III (Warehouse Subsidiaries) originally entered into secured warehouse credit facilities (Warehouse Facilities) with certain lenders during 2017 and 2018. The Warehouse Subsidiaries each entered into a credit agreement and security agreement with a commercial bank as administrative agent and a national banking association as collateral trustee and paying agent, as further described below. The credit agreement for Warehouse Facility I was amended and restated in its entirety on March 25, 2019. Warehouse I may borrow up to $250.0 million (Warehouse Facility I) and Warehouse II may borrow up to $200.0 million (Warehouse Facility II), each on a revolving basis until the earliest of October 10, 2020 for Warehouse Facility I and March 23, 2020 for Warehouse Facility II, or another event that constitutes a “Commitment Termination Date” under the respective credit agreements. Proceeds may only be used to purchase certain unsecured personal loans, including related assets, from the Company and to pay fees and expenses related to the applicable facilities. Warehouse I matures on March 25, 2022 and Warehouse II matures on the earlier to occur of twelve months after the Commitment Termination Date or January 23, 2021 , at which dates Warehouse I and Warehouse II must repay all outstanding borrowings of the facilities. Warehouse III borrowed $34.2 million on a term loan basis (Warehouse Facility III) maturing June 29, 2021 . Proceeds under Warehouse Facility III were used to purchase certain auto refinance loans, including related assets, from the Company and to pay fees and expenses related to the facility. The amount borrowed under Warehouse Facility III amortizes over time through regular principal and interest payments collected from the auto refinance loans. The entire amount of the outstanding debt may be prepaid at any time without penalty. The creditors of the Warehouse Facilities have no recourse to the general credit of the Company. Borrowings under the Warehouse Facilities bear interest at an annual benchmark rate of LIBOR (London Inter-bank Offered Rate) plus a spread ranging from 1.85% to 2.10% , or at an alternative commercial paper rate (which is either (i) the per annum rate equivalent to the weighted-average of the per annum rates at which all commercial paper notes were issued by certain lenders to fund advances or maintain loans or (ii) the daily weighted-average of LIBOR, as set forth in the applicable credit agreement). Interest is payable monthly. Borrowings may be prepaid without penalty. In addition, Warehouse Facility I and Warehouse Facility II require payment of a monthly unused commitment fee ranging from 0.50% to 1.25% per annum on the average undrawn portion available under such facilities. The Warehouse Facilities contain certain covenants. As of March 31, 2019 , the Company was in material compliance with all applicable covenants under the respective credit agreements. As of March 31, 2019 and December 31, 2018 , the Company had $122.4 million and $306.8 million in aggregate debt outstanding under the Warehouse Facilities, respectively, with collateral consisting of aggregate outstanding principal balances of $193.0 million and $467.4 million included in “Loans held for sale by the Company at fair value,” respectively, and restricted cash of $9.6 million and $25.2 million included in the Condensed Consolidated Balance Sheets , respectively. Revolving Credit Facility On December 17, 2015 , the Company entered into a credit and guaranty agreement and pledge and security agreement with several lenders for an aggregate $120.0 million secured revolving credit facility (Revolving Facility). In connection with the credit agreement, the Company entered into a pledge and security agreement with a financial services company, as collateral agent. The Company may borrow under the Revolving Facility until December 17, 2020 . Repayment of any outstanding proceeds are payable on December 17, 2020 , but may be prepaid without penalty. Borrowings under the Revolving Facility bear interest, at the Company’s option, at an annual rate of LIBOR plus a spread of 1.75% to 2.00% , which is fixed for a Company-selected interest period of one, two, three, six or 12 months, or at an alternative base rate (which is tied to either the prime rate, federal funds effective rate, or the adjusted eurocurrency rate, as defined in the credit agreement). Base rate borrowings may be prepaid at any time without penalty, however pre-payment of LIBOR-based borrowings before the end of the selected interest period may result in the Company incurring expense to compensate the lenders for their funding costs through the end of the interest period. Interest is payable quarterly. Additionally, the Company is required to pay a quarterly commitment fee to the lenders of between 0.25% and 0.375% per annum, depending on the Company’s total net leverage ratio, on the average undrawn portion available under the Revolving Facility. The Revolving Facility contains certain covenants. As of March 31, 2019 , the Company was in material compliance with all applicable covenants in the credit and guaranty agreement. The Company had $95.0 million in debt outstanding under the Revolving Facility as of both March 31, 2019 and December 31, 2018 . Repurchase Agreements On August 8, 2018 and November 8, 2018 , the Company entered into master repurchase agreements, pursuant to which the Company may sell securities (subject to an obligation to repurchase such securities at a specified future date and price) in exchange for cash. The Company is subject to margin calls based on the fair value of the collateral pledged. As of March 31, 2019 and December 31, 2018 , the Company had $46.5 million and $57.0 million in aggregate debt outstanding under its repurchase agreements, respectively, with contractual repurchase dates ranging from February 20, 2019 to January 15, 2026 , which correspond to either a set repurchase schedule or to the maturity dates of the underlying securities which have been sold, and which have a weighted-average estimated life of approximately one year. Such debt is included in “Credit facilities and securities sold under repurchase agreements” on the Condensed Consolidated Balance Sheets . As of March 31, 2019 and December 31, 2018 , the Company had $54.4 million and $64.1 million , respectively, of underlying assets pledged as collateral. Payable to Securitization Note Holders On December 13, 2018 , the Company sponsored an asset-backed securities securitization transaction consisting of approximately $300.0 million in unsecured personal whole loans facilitated through the Company’s platform. The Depositor sold 95% of the notes to third-party investors for $256.2 million in net proceeds. The residual certificates were retained by the Company. The securitization trust used to effect this transaction is a VIE that the Company consolidates because the Company is the primary beneficiary of the VIE. The notes held by third-party investors are classified as debt in the Company’s Condensed Consolidated Balance Sheets . The notes are carried at amortized cost. The associated debt issuance costs of $2.6 million are deferred and amortized into interest expense over the contractual life of the notes. As of March 31, 2019 and December 31, 2018 , the notes held by third-party investors and the respective unamortized debt issuance costs of $233.3 million and $256.4 million are included in “Payable to securitization note holders” in the Condensed Consolidated Balance Sheets , respectively, and are secured by an aggregate outstanding principal balance of $270.9 million and $294.8 million included in “Loans held for Sale by the Company at fair value,” respectively, and restricted cash of $14.7 million and $9.3 million included in the Condensed Consolidated Balance Sheets , respectively.

Secured Borrowings

Secured Borrowings	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Secured Borrowings	Securitizations and Variable Interest Entities VIE Assets and Liabilities The Company has segregated its involvement with VIEs between consolidated VIEs and unconsolidated VIEs. The following tables provide the classifications of assets and liabilities on the Company’s Condensed Consolidated Balance Sheets for its transactions with VIEs at March 31, 2019 and December 31, 2018 . Additionally, the assets and liabilities in the table below include third-party assets and liabilities of consolidated and unconsolidated VIEs only and exclude intercompany balances that eliminate in consolidation: March 31, 2019 Consolidated VIEs Unconsolidated VIEs Total Assets Restricted cash $ 25,593 $ — $ 25,593 Securities available for sale at fair value — 139,504 139,504 Loans held for investment at fair value 539,694 — 539,694 Loans held for sale by the Company at fair value 437,432 — 437,432 Accrued interest receivable 8,322 911 9,233 Other assets 2,513 33,679 36,192 Total assets $ 1,013,554 $ 174,094 $ 1,187,648 Liabilities Accrued interest payable $ 5,910 $ — $ 5,910 Accrued expenses and other liabilities 354 — 354 Notes, certificates and secured borrowings at fair value 539,694 — 539,694 Payable to securitization note holders 233,269 — 233,269 Credit facilities and securities sold under repurchase agreements 122,396 — 122,396 Total liabilities 901,623 — 901,623 Total net assets $ 111,931 $ 174,094 $ 286,025 December 31, 2018 Consolidated VIEs Unconsolidated VIEs Total Assets Restricted cash $ 43,918 $ — $ 43,918 Securities available for sale at fair value — 116,768 116,768 Loans held for investment at fair value 642,094 — 642,094 Loans held for sale by the Company at fair value 739,216 — 739,216 Accrued interest receivable 10,438 1,214 11,652 Other assets 2,498 29,206 31,704 Total assets $ 1,438,164 $ 147,188 $ 1,585,352 Liabilities Accrued interest payable $ 7,594 $ — $ 7,594 Accrued expenses and other liabilities 1,627 — 1,627 Notes, certificates and secured borrowings at fair value 648,908 — 648,908 Payable to securitization note holders 256,354 — 256,354 Credit facilities and securities sold under repurchase agreements 306,790 57,012 363,802 Total liabilities 1,221,273 57,012 1,278,285 Total net assets $ 216,891 $ 90,176 $ 307,067 Consolidated VIEs The Company consolidates VIEs when it is deemed to be the primary beneficiary. The primary beneficiary is the party that has both the power to direct the activities that most significantly impact the VIE’s economic performance and the obligation to absorb losses or the right to receive benefits of the VIE that could potentially be significant to the VIE. In evaluating whether the Company is the primary beneficiary, the Company evaluates its economic interests in the entity. A consolidation analysis can generally be performed qualitatively; however, if it is not readily apparent that the Company is not the primary beneficiary, a quantitative analysis may also be performed. See “ Part II – Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements – Note 2. Summary of Significant Accounting Policies ” in the Annual Report for additional information. LC Trust I Certificates The Company established the LC Trust for the purpose of acquiring and holding loans for the sole benefit of certain investors that have purchased trust certificates issued by the LC Trust. The Company is obligated to ensure that the LC Trust meets minimum capital requirements with respect to funding the administrative activities and maintaining the operations of the LC Trust. Consolidated Securitizations On December 13, 2018, the Company consolidated a securitization trust because the Company was the primary beneficiary. As a result, the senior securities held by third-party investors were classified as “Payable to securitization note holders” in the Company’s Condensed Consolidated Balance Sheets as of December 31, 2018 . Additionally, the Company’s continued involvement includes loan servicing responsibilities for which it receives servicing fees over the life of the underlying loans. Warehouse Credit Facilities The Company established certain entities (deemed to be VIEs) to enter into warehouse credit facilities for the purpose of purchasing loans from LendingClub. See “ Part II – Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements – Note 14. Debt ” in the Annual Report for additional information. The following tables present a summary of financial assets and liabilities from the Company’s involvement with consolidated VIEs at March 31, 2019 and December 31, 2018 : March 31, 2019 Assets Liabilities Net Assets LC Trust certificates $ 546,313 $ (544,732 ) $ 1,581 Securitizations 271,755 (233,702 ) 38,053 Warehouse credit facilities 195,486 (123,189 ) 72,297 Total consolidated VIEs $ 1,013,554 $ (901,623 ) $ 111,931 December 31, 2018 Assets Liabilities Net Assets LC Trust certificates $ 657,339 $ (656,088 ) $ 1,251 Securitizations 297,821 (256,901 ) 40,920 Warehouse credit facility 483,004 (308,284 ) 174,720 Total consolidated VIEs $ 1,438,164 $ (1,221,273 ) $ 216,891 The creditors of the VIEs above have no recourse to the general credit of the Company as the primary beneficiary of the VIEs and the liabilities of the VIEs can only be settled by the respective VIE’s assets. Unconsolidated VIEs The Company’s transactions with unconsolidated VIEs include securitizations of unsecured personal whole loans, CLUB Certificate transactions, and sales of whole loans to VIEs. The Company has various forms of involvement with VIEs, including servicing of loans and holding senior or subordinated residual interests in the VIEs. The Company considers continued involvement in an unconsolidated VIE insignificant if it is the sponsor and servicer and does not hold other significant variable interests. In these instances, the Company’s involvement with the VIE is in the role as an agent and without significant participation in the economics of the VIE. In connection with these securitizations, as well as our whole loan sales and CLUB Certificate transactions, we made certain customary representations, warranties and covenants. See “ Part II – Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements – Note 2. Summary of Significant Accounting Policies ” in the Annual Report for additional information. Unconsolidated Securitizations The Company sponsors securitizations of unsecured personal whole loans through issuances of asset-backed securities, which are collateralized by unsecured personal whole loans that are contributed by the Company and third parties. In connection with these securitizations, the Company is the sponsor and establishes securitization trusts to purchase the loans from the Company and such third parties. The accounting for Company-sponsored securitizations is based on a primary beneficiary analysis to determine whether the underlying trusts should be consolidated. If the VIEs are not consolidated and the transfer of the loans from the Company to the securitization trust meets sale accounting criteria, then the Company will recognize a gain or loss on sales of loans. The net proceeds of the sale represent the fair value of any assets obtained or liabilities incurred as part of the transaction, including, but not limited to, servicing assets, retained securities, and recourse obligations. The assets are transferred into a trust such that the assets are legally isolated from the creditors of the Company and are not available to satisfy obligations of the Company. These assets can only be used to settle obligations of the underlying securitization trusts. The Company enters into separate servicing agreements with the VIEs and holds at least 5% of the beneficial interests issued by the VIEs to comply with regulatory risk retention rules. The beneficial interests retained by the Company consist of senior securities and subordinated residual certificates and are accounted for as securities available for sale. In the case of certain securitization transactions, the Company has also agreed to repurchase or substitute loans for which a borrower fails to make the first payment due under a loan. Unconsolidated CLUB Certificates The Company sponsors the sale of unsecured personal whole loans funded through the issuance of pass-through securities called CLUB Certificates, which are collateralized by loans transferred to the issuing VIE. The CLUB Certificate is an instrument that trades in the over-the-counter market with a CUSIP. The CLUB Certificate transaction typically involves the transfer of unsecured personal whole loans to a series of a master trust. The accounting for CLUB Certificates is based on a primary beneficiary analysis to determine whether the series trust should be consolidated. If the series trust is not consolidated and the transfer of the loans from the Company to the series trust meets sale accounting criteria, then the Company will recognize gain or loss on sales of loans. The net proceeds of the sale represent the fair value of any assets obtained or liabilities incurred as part of the transaction, including, but not limited to, servicing assets, retained securities, and recourse obligations. In addition, the Company enters into a servicing agreement with each applicable series trust and holds at least 5% of the beneficial interests issued by the series trust to comply with regulatory risk retention rules. The portion of the CLUB Certificates retained by the Company are accounted for as securities available for sale. Additionally, the Company’s continued involvement includes loan servicing responsibilities for which it receives servicing fees over the life of the underlying loans. Investment Fund The Company has an equity investment in a private fund (Investment Fund) that participates in a family of funds with other unrelated third parties. This family of funds purchases whole loans and interests in loans from the Company, as well as other assets from third parties unrelated to the Company. As of March 31, 2019 , the Company had an ownership interest of approximately 23% in the Investment Fund. The Company’s investment is deemed to be a variable interest in the Investment Fund because the Company shares in the expected returns and losses of the Investment Fund. At March 31, 2019 , the Company’s investment was $8.1 million , which is recognized in “Other assets” on the Company’s Condensed Consolidated Balance Sheets . The following tables summarize unconsolidated VIEs with which the Company has significant continuing involvement, but is not the primary beneficiary at March 31, 2019 and December 31, 2018 : March 31, 2019 Carrying Value Total VIE Assets Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Net Assets Securitizations $ 1,413,708 $ 71,743 $ 555 $ 12,761 $ — $ — $ 85,059 CLUB Certificates 1,375,940 67,761 356 12,861 — — 80,978 Investment Fund 35,059 — — 8,057 — — 8,057 Total unconsolidated VIEs $ 2,824,707 $ 139,504 $ 911 $ 33,679 $ — $ — $ 174,094 March 31, 2019 Maximum Exposure to Loss Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Total Exposure Securitizations $ 71,743 $ 555 $ 12,761 $ — $ — $ 85,059 CLUB Certificates 67,761 356 12,861 — — 80,978 Investment Fund — — 8,057 — — 8,057 Total unconsolidated VIEs $ 139,504 $ 911 $ 33,679 $ — $ — $ 174,094 December 31, 2018 Carrying Value Total VIE Assets Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Net Assets Securitizations $ 1,359,367 $ 68,338 $ 958 $ 11,838 $ — $ (57,012 ) $ 24,122 CLUB Certificates 973,815 48,430 256 9,115 — — 57,801 Investment Fund 35,157 — — 8,253 — — 8,253 Total unconsolidated VIEs $ 2,368,339 $ 116,768 $ 1,214 $ 29,206 $ — $ (57,012 ) $ 90,176 December 31, 2018 Maximum Exposure to Loss Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Total Exposure Securitizations $ 68,339 $ 958 $ 11,838 $ — $ — $ 81,135 CLUB Certificates 48,431 256 9,115 — — 57,802 Investment Fund — — 8,253 — — 8,253 Total unconsolidated VIEs $ 116,770 $ 1,214 $ 29,206 $ — $ — $ 147,190 “Total VIE Assets” represents the remaining principal balance of loans held by unconsolidated VIEs with respect to securitizations and CLUB Certificates, and the net assets held by the Investment Fund using the most current information available. “Securities Available for Sale,” “Accrued Interest Receivable,” “Other Assets” and “Accrued Expenses and Other Liabilities” are the balances in the Company’s Condensed Consolidated Balance Sheets related to its involvement with the unconsolidated VIEs. “Other Assets” includes the Company’s servicing assets and servicing receivables associated with loans transferred as part of securitizations and CLUB Certificates and the Company’s equity investment with respect to the Investment Fund. “Total Exposure” refers to the Company’s maximum exposure to loss from its involvement with unconsolidated VIEs. It represents estimated loss that would be incurred under severe, hypothetical circumstances, for which the Company believes the possibility is extremely remote, such as where the value of interests and any associated collateral declines to zero. Accordingly, this required disclosure is not an indication of expected losses. The following table summarizes activity related to the unconsolidated personal whole loan securitizations and personal whole loan CLUB Certificates with the transfers accounted for as a sale on the Company’s condensed consolidated financial statements for the first quarters of 2019 and 2018 : Three Months Ended March 31, 2019 2018 Personal Personal Whole Loan CLUB Certificates Personal Personal Whole Loan CLUB Certificates Principal derecognized from loans securitized or sold $ 293,419 $ 541,128 $ 355,248 $ 161,875 Net gains (losses) recognized from loans securitized or sold $ 2,932 $ 5,824 $ 3,097 $ 1,457 Fair value of senior securities and subordinated residual certificates retained upon settlement (1) $ 14,555 $ 26,787 $ 18,493 $ 8,102 Cash proceeds from loans securitized or sold $ 266,235 $ 513,885 $ 283,272 $ 154,839 Cash proceeds from servicing and other administrative fees on loans securitized or sold $ 3,570 $ 2,943 $ 2,350 $ 135 Cash proceeds for interest received on senior securities and subordinated residual certificates $ 1,439 $ 1,435 $ 296 $ 82 (1) For personal whole loan securitizations, the Company retained senior securities of $13.4 million and $15.1 million for the first quarters of 2019 and 2018 , respectively, and subordinated residual certificates of $1.1 million and $3.4 million for the first quarters of 2019 and 2018 , respectively. Off-Balance Sheet Loans Off-balance sheet loans primarily relate to structured program transactions for which the Company has some form of continuing involvement, including as servicer. Delinquent loans are comprised of loans 31 days or more past due, including non-accrual loans. For loans related to structured program transactions where servicing is the only form of continuing involvement, the Company would only experience a loss if it was required to repurchase a loan due to a breach in representations and warranties associated with its loan sale or servicing contracts. As of March 31, 2019 , the aggregate unpaid principal balance of the off-balance sheet loans pursuant to structured program transactions was $2.8 billion , of which $89.0 million was attributable to off-balance sheet loans that were 31 days or more past due. As of December 31, 2018 , the aggregate unpaid principal balance of the off-balance sheet loans pursuant to structured program transactions was $2.3 billion , of which $87.1 million was attributable to off-balance sheet loans that were 31 days or more past due. Retained Interests from Unconsolidated VIEs The Company and other investors in the subordinated interests issued by securitization trusts have rights to cash flows only after the investors holding the senior securities issued by the securitization trusts have first received their contractual cash flows. The investors and the securitization trusts have no direct recourse to the Company’s assets, and holders of the securities issued by the securitization trusts can look only to the assets of the securitization trusts that issued their securities for payment. The beneficial interests held by the Company and the Company’s MOA are subject principally to the credit and prepayment risk stemming from the underlying unsecured personal whole loans. See “ Note 8. Fair Value of Assets and Liabilities ” for additional information on the fair value sensitivity of asset-backed securities related to structured program transactions. Secured Borrowings In October 2017, LendingClub Asset Management, LLC (LCAM), a wholly-owned subsidiary of LendingClub that previously acted as the general partner for certain private funds, initiated the wind-down of six funds by redeeming the LC Trust certificates issued to the funds and transferring the loan participations underlying the redeemed certificates to third party investors. Certain of the loan participations for two of the funds transferred did not meet the definition of participating interests because the Company provided a credit support agreement under which the investor has a recourse to the Company for credit losses. The transfer of these loan participations from these two funds was accounted for as a secured borrowing and the underlying whole loans were not derecognized from the Company’s Condensed Consolidated Balance Sheets . The Company has elected the fair value option for the secured borrowings. As of March 31, 2019 , the fair value of the secured borrowings was $61.6 million secured by aggregate outstanding principal balance of $59.4 million included in “Loans held for investment at fair value” in the Condensed Consolidated Balance Sheets . As of December 31, 2018 , the fair value of the secured borrowings was $80.6 million secured by aggregate outstanding principal balance of $81.1 million included in “Loans held for investment at fair value” in the Condensed Consolidated Balance Sheets . Changes in the fair value of the secured borrowings are partially offset by the associated loan participations, and the net effect results in changes in fair value of the credit support agreement through earnings. As of March 31, 2019 and December 31, 2018 , the fair value of this credit support agreement was $5.0 million and $2.8 million . The fair value of the credit support agreement is equal to the present value of the probability-weighted estimate of expected payments over a range of loss scenarios. See “ Note 6. Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings ” for additional information.

Employee Incentive Plans

Employee Incentive Plans	3 Months Ended
	Mar. 31, 2019
Postemployment Benefits [Abstract]
Employee Incentive Plans	Employee Incentive Plans The Company’s 2014 Equity Incentive Plan (EIP) provides for granting awards, including restricted stock units (RSUs), performance-based restricted stock units (PBRSUs) and stock options to employees, officers and directors. Stock-based compensation expense was as follows for the periods presented: Three Months Ended 2019 2018 RSUs and PBRSUs $ 17,185 $ 14,793 Stock options 715 2,567 ESPP 352 441 Total stock-based compensation expense $ 18,252 $ 17,801 The following table presents the Company’s stock-based compensation expense recorded in the Condensed Consolidated Statements of Operations : Three Months Ended 2019 2018 Sales and marketing $ 1,571 $ 1,860 Origination and servicing 924 1,072 Engineering and product development 5,231 5,279 Other general and administrative 10,526 9,590 Total stock-based compensation expense $ 18,252 $ 17,801 The Company capitalized $1.9 million and $2.2 million of stock-based compensation expense associated with developing software for internal use during the first quarters of 2019 and 2018 , respectively. Restricted Stock Units The following table summarizes the activities for the Company’s RSUs during the first quarter of 2019 : Number of Units Weighted- Average Grant Date Fair Value Unvested at December 31, 2018 43,199,014 $ 4.05 Granted 26,113,561 $ 3.13 Vested (3,645,135 ) $ 4.56 Forfeited/expired (3,544,662 ) $ 3.91 Unvested at March 31, 2019 62,122,778 $ 3.64 During the first quarter of 2019 , the Company granted 26,113,561 RSUs with an aggregate fair value of $81.7 million . As of March 31, 2019 , there was $214.8 million of unrecognized compensation cost related to unvested RSUs, which is expected to be recognized over the next 3.2 years . Performance-based Restricted Stock Units PBRSUs are equity awards that are earned, and eligible for time-based vesting, based upon the achievement of certain pre-established performance metrics over a specific performance period. Depending on the level of achievement of the pre-established performance metrics, the PBRSUs earned and eligible for time-based vesting can range from 0% to 200% of the target amount. PBRSUs granted under the Company’s EIP generally have a one -year performance period with the earned shares, if any, vesting over an additional approximately two -year period. Over the performance period, the number of PBRSUs that may be earned and the related stock-based compensation expense that is recognized is adjusted upward or downward based upon the probability of achieving the pre-established performance metrics. During the first quarter of 2019 , the Company expanded the use of its PBRSU program to nearly all of the executive team in the form of PBRSUs. The following table summarizes the activities for the Company’s PBRSUs during the first quarter of 2019 : Number of Units Weighted- Average Grant Date Fair Value Unvested at December 31, 2018 1,273,218 $ 3.71 Granted 1,869,015 $ 3.28 Vested (114,221 ) $ 5.20 Forfeited/expired (1) (295,463 ) $ 3.46 Unvested at March 31, 2018 2,732,549 $ 3.38 (1) Represents the portion of PBRSUs granted in 2018 that were unearned as a result of not achieving certain pre-established performance metrics during the performance period. For the first quarters of 2019 and 2018 , the Company recognized $0.9 million and $0.6 million in stock-based compensation expense related to PBRSUs, respectively. As of March 31, 2019 , there was $7.4 million of unrecognized compensation cost related to unvested PBRSUs, which is expected to be recognized over the next 2.3 years .

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company continues to recognize a full valuation allowance against net deferred tax assets. This determination was based on the assessment of the available positive and negative evidence to estimate if sufficient future taxable income will be generated to utilize the existing deferred tax assets.

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	Leases The Company has operating leases for its headquarters in San Francisco, California, as well as additional office space in the Salt Lake City area and Westborough, Massachusetts. As of March 31, 2019, the lease agreements have remaining lease terms ranging from two to ten years. Some of the lease agreements include options to extend the lease term for up to an additional fifteen years and some of them include options to terminate the lease with six months’ prior notice. In addition, the Company is the sublessor of a portion of its office space in San Francisco, with lease terms ranging from two to four years. As of March 31, 2019 , the Company pledged $0.9 million of cash and $6.6 million in letters of credit as security deposits in connection with its lease agreements. Supplemental balance sheet information as of March 31, 2019 related to leases was as follows: ROU Assets and Lease Liabilities Balance Sheet Classification March 31, 2019 Operating lease assets Other assets $ 107,455 Operating lease liabilities (1) Accrued expenses and other liabilities $ 122,667 (1) The difference between operating lease assets and operating lease liabilities is the unamortized balance of deferred rent, which prior to January 1, 2019 was included as a separate liability within Accrued expenses and other liabilities. Components of net lease costs for the first quarter of 2019 were as follows: Three Months Ended Net Lease Costs Income Statement Classification 2019 2018 Operating lease costs (1) Other general and administrative expense $ (5,192 ) $ (4,316 ) Sublease income Other revenue 1,007 77 Net lease costs $ (4,185 ) $ (4,239 ) (1) Includes variable lease costs of $0.3 million and $0.2 million for the first quarters of 2019 and 2018 , respectively. Supplemental cash flow information for the first quarter of 2019 related to the Company’s operating leases was as follows: Three Months Ended March 31, 2019 Non-cash operating activity: Leased assets obtained in exchange for new operating lease liabilities (1) $ 15,277 (1) Represents non-cash activity and, accordingly, is not reflected in the Condensed Consolidated Statements of Cash Flows . The Company’s future minimum undiscounted lease payments under operating leases and anticipated sublease revenue as of March 31, 2019 were as follows: Operating Lease Payments Sublease Revenue Net 2019 $ 12,750 $ (3,411 ) $ 9,339 2020 19,442 (5,232 ) 14,210 2021 19,900 (5,389 ) 14,511 2022 15,626 (2,304 ) 13,322 2023 11,624 — 11,624 Thereafter 86,277 — 86,277 Total lease payments $ 165,619 $ (16,336 ) $ 149,283 Discount effect 42,952 Present value of future minimum lease payments $ 122,667 The weighted-average remaining lease term and discount rate used in the calculation of the Company’s operating lease assets and liabilities were as follows: Lease Term and Discount Rate March 31, 2019 Weighted-average remaining lease term (in years) 9.95 Weighted-average discount rate 5.0 %

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Operating Lease Commitments For discussion regarding the Company’s operating lease commitments, see “ Note 17. Leases . ” Loan Purchase Obligation Under the Company’s loan account program with WebBank, which serves as the Company’s primary issuing bank for loans facilitated through the Company’s platform, WebBank retains ownership of the loans it originates for two business days after origination. As part of this arrangement, the Company is committed to purchase the loans at par plus accrued interest, at the conclusion of the two business days. As of March 31, 2019 and December 31, 2018 , the Company was committed to purchase loans with an outstanding principal balance of $43.0 million and $55.9 million at par, respectively. Loan Repurchase Obligations The Company is generally required to repurchase loans or interests therein in the event of identity theft or fraud on the part of the borrower. The Company may also repurchase loans or interests therein in connection with certain customer accommodations. In connection with certain whole loan and CLUB Certificate sales, as well as to facilitate access to securitization markets, the Company has agreed to repurchase loans if representations and warranties made with respect to such loans are breached under certain circumstances. In the case of certain securitization transactions, the Company has also agreed to repurchase or substitute loans for which a borrower fails to make the first payment due under a loan. The Company believes such provisions are customary and consistent with institutional loan and securitization market standards. In addition to and distinct from the repurchase obligations described in the preceding paragraph, the Company performs certain administrative functions for a variety of retail and institutional investors, including executing, without discretion, loan investments as directed by the investor. To the extent loans do not meet the investor’s investment criteria at the time of issuance, or are transferred to the investor as a result of a system error by the Company, the Company repurchases such loans or interests therein at par. As a result of the loan repurchase obligations described above, the Company repurchased $2.0 million and $1.6 million in loans or interests therein during the first quarters of 2019 and 2018 , respectively. Purchase Commitments As required by applicable regulations, the Company must make firm offers of credit with respect to prescreened direct mail it sends out to prospective applicants provided such applicants continue to meet the credit worthiness criteria which were used to screen them at the time of their application. If such loans are accepted by the applicants but not otherwise funded by investors on the platform, the Company is required to facilitate funding for the loans directly with its issuing bank partners. The Company was not required to purchase any such loans during the first quarter of 2019 . Additionally, loans in the process of being facilitated through the Company’s platform and originated by the Company’s issuing bank partner at March 31, 2019 , were substantially funded in April 2019 . As of the date of this report, no loans remained without investor commitments and the Company was not required to purchase any of these loans. In addition, if neither the Company nor Springstone can arrange for other investors to invest in or purchase loans that Springstone facilitates and that are originated by an issuing bank partner but do not meet the credit criteria for purchase by the issuing bank partner (Pool B loans), the Company and Springstone are contractually committed to purchase these loans. As of both March 31, 2019 and December 31, 2018 , the Company had a $9.0 million deposit in a bank account to secure potential future purchases of these loans, if necessary. The funds are recorded as restricted cash on the Company’s Condensed Consolidated Balance Sheets . During the first quarter of 2019 , the Company was required to purchase $5.3 million of Pool B loans. Pool B loans are held on the Company’s Condensed Consolidated Balance Sheets and have an outstanding principal balance and fair value of $30.6 million and $27.0 million as of March 31, 2019 , respectively, and $30.4 million and $26.6 million as of December 31, 2018 , respectively. The Company believes it will be required to purchase additional Pool B loans in 2019 as it seeks to arrange for other investors to invest in or purchase these loans. Credit Support Agreement The Company is subject to a credit support agreement with Cirrix Capital (Investment Fund). The credit support agreement requires the Company to pledge and restrict cash in support of its contingent obligation to reimburse the Investment Fund for net credit losses on loans underlying the Investment Fund’s certificates that are in excess of a specified, aggregate net loss threshold. On April 14, 2017, the credit support agreement was terminated effective December 31, 2016. However, the Company remains subject to the credit support agreement for credit losses on loans underlying the Investment Fund’s certificates that were issued on or prior to December 31, 2016. The Company pledged and restricted cash in the amount of $0.7 million and $0.8 million as of March 31, 2019 and December 31, 2018 , respectively, to support this contingent obligation. The Company’s maximum exposure to loss under this credit support agreement was limited to $6.0 million as of March 31, 2019 and December 31, 2018 , for which no liability has been accrued as of March 31, 2019 or December 31, 2018 . Legal The Company is subject to various claims brought in a litigation or regulatory context. These matters include lawsuits and federal regulatory actions relating to and arising from the internal board review described more fully in “ Management’s Discussion and Analysis of Financial Condition and Results of Operations – Board Review ” contained in Part II, Item 7 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 (the Board Review). Of these matters relating to and arising from the Board Review, the Company has settled certain significant class action and subsequent “opt-out” lawsuits and investigations conducted by the Securities and Exchange Commission and Department of Justice, leaving derivative lawsuits and litigation with the FTC outstanding. In addition to the Board Review related matters, the Company continues to cooperate in federal and state regulatory examinations, investigations, and actions relating to the Company’s business practices and licensing, and is a party to a number of routine litigation matters arising in the ordinary course of business. The majority of these claims and proceedings relate to or arise from alleged state or federal law and regulatory violations, or are alleged commercial disputes or consumer complaints. The Company accrues for costs related to contingencies when a loss from such claims is probable and the amount of loss can be reasonably estimated. In determining whether a loss from a claim is probable and the loss can be reasonably estimated, the Company reviews and evaluates its litigation and regulatory matters on at least a quarterly basis in light of potentially relevant factual and legal developments. If the Company determines an unfavorable outcome is not probable or the amount of loss cannot be reasonably estimated, the Company does not accrue for a potential litigation loss. In those situations, the Company discloses an estimate or range of the reasonably possible losses, if such estimates can be made. Except as otherwise specifically noted below, at this time, the Company does not believe that it is possible to estimate the reasonably possible losses or a range of reasonably possible losses related to the matters described below. Derivative Lawsuits In May 2016 and August 2016, respectively, two putative shareholder derivative actions were filed ( Avila v. Laplanche, et al. , No. CIV538758 and Dua v. Laplanche, et al. , CGC-16-553731) against certain of the Company’s current and former officers and directors and naming the Company as a nominal defendant. Both actions were voluntarily dismissed without prejudice. On December 14, 2016, another putative shareholder derivative action was filed in the Delaware Court of Chancery ( Steinberg, et al. v. Morris, et al., C.A. No. 12984-CB), against certain of the Company’s current and former officers and directors and naming the Company as a nominal defendant. In addition, on August 18, 2017, another putative shareholder derivative action was filed in the Delaware Court of Chancery ( Fink, et al. v. Laplanche, et al., C.A. No. 2017-0600). These matters arise from claims that the Board allegedly breached its fiduciary duty by failing to provide adequate oversight over the Company’s practices and procedures, and purport to plead derivative claims under Delaware law. The court ultimately consolidated the cases, selecting the Steinberg plaintiffs as lead plaintiffs, and designating the Steinberg complaint as the operative complaint (consolidated Delaware matter). In June 2018, the Company and the individual defendants brought a motion to dismiss the consolidated Delaware matter on demand futility grounds or in the alternative to stay the matter. Defendants in the consolidated Delaware matter later consented to the filing of a supplemental consolidated complaint in the case, and the plaintiffs filed that supplemental complaint on January 11, 2019. The Company and individual defendants in the case filed motions to dismiss the supplemental complaint on February 22, 2019. On November 6, 2017, another putative shareholder derivative action was filed in the U.S. District Court for the Northern District of California ( Sawyer v. Sanborn, et al., No. 3:17-cv-06447) against certain of the Company’s current and former officers and directors and naming the Company as a nominal defendant. This action was based on allegations similar to those in a consolidated putative securities class action litigation ( In re LendingClub Securities Litigation , No. 16-cv-02627 (N.D. Cal.)) that was successfully settled in 2018. The plaintiffs in the consolidated Delaware matter were permitted to join with the plaintiffs in the Sawyer action for the purposes of settlement. The Court in the Sawyer action concurrently ordered all parties (including the intervening consolidated Delaware matter plaintiffs) to participate in a mediation in May 2018, but that mediation did not result in a settlement. In July 2018, the Company and the individual defendants brought a motion to dismiss the Sawyer matter on the grounds that the action was not filed within the applicable statute of limitations. The court granted that motion and judgment was entered in favor of the defendants. The Sawyer plaintiff also attempted to intervene in a previously filed derivative action in the U.S. District Court for the Northern District of California ( Stadnicki v. LaPlanche, et al. , No. 3:16-cv-03072). The Company and the individual defendants opposed the intervention, and the original Stadnicki plaintiff moved to voluntarily dismiss the case. The motion to intervene was denied and the motion to voluntarily dismiss the Stadnicki action was granted. Notices of appeal were filed in both the Sawye r and Stadnicki actions. The appeal in the Sawyer matter has been dismissed at the Sawyer plaintiff’s request. The appeal in the Stadnicki matter remains pending. It is not possible for the Company to predict the outcome of the derivative litigation matters discussed above. FTC Lawsuit In 2016, the Company received a formal request for information from the Federal Trade Commission (the FTC). The FTC commenced an investigation concerning certain of the Company’s policies and practices and related legal compliance. On April 25, 2018, the FTC filed a complaint in the Northern District of California ( FTC v. LendingClub Corporation , No. 3:18-cv-02454) alleging causes of action for violations of the FTC Act, including claims of deception in connection with disclosures related to the origination fee associated with loans available through the Company’s platform, and in connection with communications relating to the likelihood of loan approval during the application process, and a claim of unfairness relating to certain unauthorized charges to borrowers’ bank accounts. The FTC’s complaint also alleged a violation of the Gramm-Leach-Bliley Act regarding the Company’s practices in delivering its privacy notice. In June 2018, the Company brought a motion to dismiss the FTC’s complaint, which was heard on September 13, 2018. In an order dated October 3, 2018, the Court denied the motion in part and granted the motion in part, providing the FTC with leave to amend its pleadings. On October 22, 2018, the FTC filed an amended complaint which reasserted the same causes of action from the original complaint. On November 13, 2018, the Company filed an answer to the amended complaint. The FTC subsequently filed a motion seeking to strike certain affirmative defenses pled in the answer and the Company has filed an opposition to the motion. Briefing on the motion was completed on February 7, 2019. On April 29, 2019, the court issued a ruling denying the FTC’s motion in part and granting it in part and allowing the Company to replead certain of the affirmative defenses that were the subject of the FTC’s motion. Discovery in the case is ongoing. The Company denies, and will continue to vigorously defend against, the claims asserted in this case. Notwithstanding the Company’s vigorous defense, the Company and the FTC have participated in voluntary settlement conferences and may engage in additional settlement discussions. No assurances can be given as to the timing, outcome or consequences of this matter. Securities Class Action Lawsuit Following Announcement of FTC Litigation In May 2018, following the announcement of the FTC’s litigation against the Company, putative shareholder class action litigation was filed in the U.S. District Court of the Northern District of California ( Veal v. LendingClub Corporation et.al., No. 5:18-cv-02599) against the Company and certain of its current and former officers and directors alleging violations of federal securities laws in connection with the Company’s description of fees and compliance with federal privacy law in securities filings. The court appointed lead plaintiffs and lead counsel for the litigation in November 2018. On January 7, 2019, the lead plaintiffs filed a consolidated amended class action complaint which asserts the same causes of action as the original complaint and adds additional allegations. On March 8, 2019, the Company and the individual defendants in the case filed motions to dismiss the consolidated amended class action complaint. These motions are set for hearing in September 2019. This lawsuit is in the early stages. The Company denies and will vigorously defend against the allegations. No assurances can be given as to the timing, outcome or consequences of this matter. Derivative Lawsuits Following FTC Litigation In July 2018, a putative shareholder derivative action was filed in the U.S. District Court for the Northern District of California ( Baron v. Sanborn, et al. No. 3:18-cv-04391) against certain of the Company’s current and former officers and directors and naming the Company as a nominal defendant. This action is based on allegations that the individuals breached their fiduciary duties to the Company and violated federal securities laws by, among other things, permitting the actions alleged in the FTC litigation and the description of fees and other practices in the Company’s securities filings. This lawsuit has been stayed pending further developments in the Veal action. In January 2019, a second putative shareholder derivative action was filed in the U.S. District Court for the Northern District of California ( Cheekatamarla v. Sanborn, et al ., No. 3:19-cv-00563) against certain of the Company’s current officers and directors and naming the Company as a nominal defendant. Like the Baron action, this action is based on allegations that the individuals breached their fiduciary duties to the Company and violated federal securities laws by, among other things, permitting the actions alleged in the FTC litigation and the description of fees and other practices in the Company’s securities filings. Pursuant to a stipulation by the parties in both of these derivative cases, the court has consolidated the two cases and has stayed the consolidated action pending further developments in Veal . It is not possible for the Company to predict the outcome of these consolidated derivative litigation matters. Regulatory Investigation by the State of Massachusetts In June 2018, the Company received a civil investigative demand from the office of the Attorney General of the State of Massachusetts. The investigation relates to the advertisement and provision of personal loans to Massachusetts’ consumers facilitated by the Company. The Company is cooperating with the investigation. The Company and the Attorney General’s Office have recently communicated regarding questions and concerns the Attorney General’s Office has regarding the Company’s compliance with the Massachusetts Small Loan Law and the Small Loan Rate Order promulgated under it. More recently, the Attorney General’s Office has sent additional information requests to the Company. Although the Company is not able to predict with certainty the timing, outcome, or consequence of the investigation, it could result in claims or actions against the Company, including litigation, regulatory enforcement actions, injunctions, monetary damages, fines or penalties, or require us to change our business practices or expend operational resources, all of which could result in a material loss or otherwise harm our business. Regulatory Investigation by the Alaska Division of Banking and Securities In the fourth quarter of 2018, the Company received a letter from the Alaska Division of Banking and Securities (Division) notifying it of an investigation by the Division into possible violations by the Company of the Alaska Small Loan Act. The Company has cooperated with the Division in connection with the investigation and has also notified the Division and the Alaska Department of Law of its position that the Company is not subject to the Alaska Small Loan Act. This matter is in the early stages. No assurances can be given as to the timing, outcome or consequences of this matter. Regulatory Examinations and Actions Relating to the Company’s Business Practices and Licensing The Company has been subject to periodic inquiries and enforcement actions brought by federal and state regulatory agencies relating to the Company’s business practices, the required licenses to operate its business and its manner of operating in accordance with the requirements of its licenses. In the past, the Company has successfully resolved inquiries in a manner that was not material to its results of financial operations in any period and that did not materially limit the Company’s ability to conduct its business. At the state level, the Company has had discussions with the Colorado Department of Law (the CDL) concerning the licenses required for the Company’s servicing operations and the structure of its offerings in the State of Colorado. No assurances can be given as to the timing or outcome of this matter. The Company is also in discussions with the CDL about entering into a terminable agreement to, among other things: (i) toll the statutes of limitations on any action the CDL might bring against the Company based on the rates and charges on the loans the Company facilitates and (ii) refrain from making certain loans available for investment by certain investors. No assurances can be given as to the timing, outcome or consequences of this matter. In addition, the Company has also responded to inquiries from the California Department of Business Oversight and the New York Department of Financial Services regarding the operation of the Company’s business and the overall “FinTech” industry. Putative Class Actions In December 2017, a putative class action lawsuit was filed against the Company in the State of Nevada (Moses v. LendingClub Corporation , 2:17-cv-03071-JAD-PAL) alleging violations of the federal Fair Credit Reporting Act. The complaint alleged that the Company improperly accessed the credit report of the plaintiff, who had formerly had a loan serviced by the Company. The complaint further alleged, on information and belief, that the Company improperly accessed credit reports of other similarly situated individuals. The Company filed a motion to compel arbitration on the grounds that the plaintiff waived the right to bring a class action and must individually arbitrate any claim. On February 6, 2019, the court issued an order granting this motion, dismissed the putative class action without prejudice, and ordered the parties to arbitrate the plaintiff’s claim. The Company denies the plaintiff’s claim and is prepared to vigorously defend against it in the event the plaintiff initiates an arbitration following the court’s recent order. No assurances can be given as to the timing, outcome or consequences of this matter. In March 2019, a putative class action lawsuit was filed against the Company in the State of Florida ( Plouffe v. LendingClub Corporation , 0:19-cv-60715-FAM) alleging violations of the federal Fair Credit Reporting Act. The complaint alleges that the Company made unauthorized credit report inquiries relating to the plaintiff following the receipt of a bankruptcy discharge by the plaintiff. The plaintiff seeks to represent a class of similarly situated individuals in the lawsuit. The case is in the early stages and the Company has not yet filed a response to the plaintiff’s complaint. No assurances can be given as to the timing, outcome or consequences of this matter. In September 2018, a lawsuit was filed against the Company in the State of New York ( Accardo v. Lending Club, et al. , 2:18-cv-05030-JS-AKT) asserting an individual claim under the federal Fair Credit Reporting Act against the Company. In early 2019, the plaintiff filed a motion for leave to amend his complaint in the case to assert a putative class claim under the Fair Credit Reporting Act. The plaintiff’s proposed amended complaint contends that LendingClub failed to conduct a reasonable investigation into plaintiff’s identity theft dispute and plaintiff seeks to represent a class of similarly situated individuals. The Company filed an opposition to plaintiff’s motion for leave to amend and also filed a motion to compel arbitration of plaintiff’s claim against the Company on an individual basis. The court has not yet ruled on either motion. Discovery in the case is stayed. This matter is in the early stages. No assurances can be given as to the timing, outcome or consequences of this matter. California Private Attorneys General Lawsuit In September 2018, a putative action under the California Private Attorney General Act was brought against the Company in the California Superior Court ( Brott v. LendingClub Corporation, et al. , CGC-18-570047) alleging violations of the California Labor Code. The complaint by a former employee alleges that the Company improperly failed to pay certain hourly employees for all wages owed, pay the correct rate of pay including overtime, and provide accurate wage statements. The lawsuit alleges that the plaintiff and aggrieved employees are entitled to recover civil penalties under the California Labor Code. On January 11, 2019, the Company filed a petition to compel arbitration of the plaintiff’s claims and stay the litigation pending a ruling on the motion and arbitration of the matter. Pursuant to the parties’ stipulation, in March 2019, the court issued an order staying the lawsuit pending the parties’ participation in a mediation in September 2019. This lawsuit is in the early stages. The Company denies and will vigorously defend against the allegations. No assurances can be given as to the timing, outcome or consequences of this matter. Certain Financial Considerations Relating to Litigation and Investigations With respect to the matters discussed above, the Company had $12.7 million and $12.8 million in accrued contingent liabilities at March 31, 2019 and December 31, 2018 , respectively. Class action and regulatory litigation expense for the first quarter of 2018 was $13.5 million . The Company had no class action and regulatory litigation expense during the first quarter of 2019 . In addition to the foregoing, the Company is subject to, and may continue to be subject to, legal proceedings and regulatory actions in the ordinary course of business. No assurance can be given as to the timing, outcome or consequences of any of these matters.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company defines operating segments to be components of the Company for which discrete financial information is evaluated regularly by the Company’s executive management committee as chief operating decision maker (CODM). For purposes of allocating resources and evaluating financial performance, the Company’s CODM reviews financial information by loan product types of personal, education and patient finance, small business and auto. These product types are individually reviewed as operating segments but are aggregated to represent one reportable segment because the education and patient finance, small business and auto loan product types are immaterial both individually and in the aggregate. All of the Company’s revenue is generated in the United States. No individual borrower or investor accounted for 10% or more of consolidated net revenue for any of the periods presented.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Related party transactions must be reviewed and approved by the Audit Committee of the Company’s board of directors when not conducted in the ordinary course of business subject to the standard terms of the Company’s lending marketplace or certificate investment program. Any material amendment or modification to an existing related party transaction is also subject to the review and approval of the Audit Committee. Related party transactions may include any transaction between entities under common control or with a related person that has occurred since the beginning of the Company’s latest fiscal year or is currently proposed. The Company has defined related persons as members of the board of directors, executive officers, principal owners of the Company’s outstanding stock and any immediate family members of each such related person, as well as any other person or entity with significant influence over the Company’s management or operations. Several of the Company’s executive officers and directors (including immediate family members) have made deposits and withdrawals to their investor accounts and purchased loans or interests therein or had investments in and distributions from private funds managed by LCAM. The Company believes all such transactions by related persons were made in the ordinary course of business and were transacted on terms and conditions that were not more favorable than those obtained by similarly situated third-party investors. As of March 31, 2019 , the Company had an $8.1 million investment and an approximate 23% ownership interest in an Investment Fund, a private fund that participates in a family of funds with other unrelated third parties. This family of funds purchases whole loans and interests in loans from the Company, as well as other assets from third parties unrelated to the Company. The Company’s investment in the Investment Fund is recorded in “Other assets” on the Company’s Condensed Consolidated Balance Sheets . During the first quarter of 2019 , the family of funds purchased $77 thousand of whole loans. During the first quarter of 2019 , the Company earned $28 thousand in investor fees from this family of funds, and paid interest of $327 thousand on the funds’ interests in whole loans. The Company believes that the investor fees charged were on terms and conditions that were not more favorable than those obtained by other third-party investors.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The Company has evaluated the impact of events that have occurred subsequent to March 31, 2019 , through the date the condensed consolidated financial statements were filed with the SEC. Based on this evaluation, other than as recorded or disclosed within these condensed consolidated financial statements and related notes, the Company has determined no additional subsequent events were required to be recognized or disclosed.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Adoption of New Accounting Standards	Adoption of New Accounting Standards The Company adopted the following accounting standards during the first quarter of 2019 : ASU 2016-02, Leases (Topic 842), requires lessees to record on their balance sheets a lease liability for the obligation to make lease payments and a right-of-use (ROU) asset for the right to use the underlying asset for the lease term. The Company adopted Topic 842 as of January 1, 2019 and has elected not to restate comparative periods presented in the condensed consolidated financial statements. The Company has chosen not to elect the practical expedients permitted under the transition guidance within the new standard, which among other things, permits entities to carry forward their historical lease identification. The Company has made an accounting policy election to not recognize lease liabilities and ROU assets for short-term leases, which are leases with initial terms of 12 months or less and for which there is not a purchase option that is reasonably certain to be exercised. All leases within the Company’s portfolio are classified as operating leases. Adoption of Topic 842 had an impact on the Company’s Condensed Consolidated Balance Sheets but did not have an impact on the Company’s Condensed Consolidated Statements of Operations or Condensed Consolidated Statements of Cash Flows . The most significant impact was the recognition of ROU assets and lease liabilities of $ 95.2 million and $110.1 million , respectively, with no cumulative effect in retained earnings. The difference between the ROU assets and lease liabilities is the unamortized balance of deferred rent, which prior to January 1, 2019, was included as a separate liability within Accrued expenses and other liabilities. The operating lease expenses are included in Other general and administrative expense and sublease income is recorded in Other revenue in the Company’s Condensed Consolidated Statements of Operations . The Company included the disclosures required by ASU 2016-02 in “ Note 17. Leases .” New Accounting Standards Not Yet Adopted Updates to new accounting standards issued and not yet adopted are as follows: In June 2016, the FASB amended guidance related to impairment of financial instruments as part of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which will be effective on January 1, 2020. The guidance replaces the incurred loss impairment methodology with an expected credit loss model for which a company recognizes an allowance based on the estimate of expected credit loss. The Company accounts for its loans at fair value through net income, which is outside the scope of Topic 326. For available for sale debt securities, the guidance will require recognition of expected credit losses by recognizing an allowance for credit losses when the fair value of the security is below amortized cost and the recognition of this allowance is limited to the difference between the security’s amortized cost basis and fair value. The Company has created a working group consisting of key stakeholders from finance to implement the targeted amendments to the available for sale debt securities impairment model. The Company is evaluating the impact this ASU will have on its financial position, results of operations, and cash flows. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement , which modifies the disclosure requirements on fair value measurements by removing, modifying, or adding certain disclosures. The ASU eliminates such disclosures as the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy and valuation processes for Level 3 fair value measurements. The ASU adds new disclosure requirements for Level 3 measurements. The new guidance is effective on January 1, 2020 and permits early adoption of either the entire standard or only the provisions that eliminate or modify the requirements. The Company is evaluating the impact this ASU will have on its disclosures. In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other – Internal-Use Software – (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract , which requires a customer in a hosting arrangement that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to capitalize as assets or expense as incurred. The standard is effective on January 1, 2020, with early adoption permitted. The amendments in this ASU can be applied either retrospectively or prospectively to all implementation costs after the date of adoption. The Company is evaluating the impact this ASU will have on its financial position, results of operations, and cash flows.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue by Source	The following tables present the Company’s revenue from contracts with customers, disaggregated by revenue source for services transferred over time, for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Transaction fees $ 135,397 $ 111,182 Referral fees 695 836 Total revenue from contracts with customers $ 136,092 $ 112,018

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Basic and Diluted Net Income (Loss) per Share	The following table details the computation of the Company’s basic and diluted net loss per share: Three Months Ended 2019 2018 LendingClub net loss $ (19,935 ) $ (31,181 ) Weighted-average common shares – Basic 430,544,355 418,299,301 Weighted-average common shares – Diluted 430,544,355 418,299,301 Net loss per share attributable to LendingClub: Basic $ (0.05 ) $ (0.07 ) Diluted $ (0.05 ) $ (0.07 )

Securities Available for Sale (

Securities Available for Sale (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation	The amortized cost, gross unrealized gains and losses, and fair value of securities available for sale as of March 31, 2019 and December 31, 2018 , were as follows: March 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value CLUB Certificate asset-backed securities (1) $ 67,869 $ 70 $ (178 ) $ 67,761 Securitized asset-backed senior securities (1)(2) 59,749 330 — 60,079 Certificates of deposit 17,729 — — 17,729 Corporate debt securities 14,778 12 — 14,790 Asset-backed securities 13,631 1 (1 ) 13,631 Securitized asset-backed subordinated residual certificates (1) 11,550 194 (80 ) 11,664 Commercial paper 11,355 — — 11,355 Other securities 500 — — 500 Total securities available for sale $ 197,161 $ 607 $ (259 ) $ 197,509 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securitized asset-backed senior securities (1)(2) $ 56,363 $ 188 $ (62 ) $ 56,489 CLUB Certificate asset-backed securities (1) 48,505 150 (225 ) 48,430 Corporate debt securities 17,339 1 (12 ) 17,328 Certificates of deposit 14,929 — — 14,929 Securitized asset-backed subordinated residual certificates (1) 11,602 249 (2 ) 11,849 Asset-backed securities 11,232 — (7 ) 11,225 Commercial paper 9,720 — — 9,720 Other securities 499 — — 499 Total securities available for sale $ 170,189 $ 588 $ (308 ) $ 170,469 (1) As of March 31, 2019 , and December 31, 2018 , $138.1 million and $115.1 million , respectively, of the asset-backed securities related to structured program transactions at fair value are subject to restrictions on transfer pursuant to the Company's obligations as a “sponsor” under the U.S. Risk Retention Rules (as more fully described in “ Part I – Item 1A. Risk Factors – Risk retention rules may increase our compliance costs, impair our liquidity and otherwise adversely affect our operating results ” in the Annual Report.). (2) Includes $45.2 million and $53.6 million of securities available for sale pledged as collateral at fair value as of March 31, 2019 , and December 31, 2018 , respectively.
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	A summary of securities available for sale with unrealized losses as of March 31, 2019 and December 31, 2018 , aggregated by period of continuous unrealized loss, is as follows: Less than 12 months 12 months or longer Total March 31, 2019 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Asset-backed securities related to structured program transactions $ 10,892 $ (258 ) $ — $ — $ 10,892 $ (258 ) Asset-backed securities 3,906 (1 ) — — 3,906 (1 ) Total securities with unrealized losses (1) $ 14,798 $ (259 ) $ — $ — $ 14,798 $ (259 ) Less than 12 months Total December 31, 2018 Fair Unrealized Fair Unrealized Fair Unrealized Asset-backed securities related to structured program transactions $ 49,047 $ (285 ) $ 1,745 $ (4 ) $ 50,792 $ (289 ) Corporate debt securities 14,538 (12 ) — — 14,538 (12 ) Asset-backed securities 11,208 (7 ) — — 11,208 (7 ) Total securities with unrealized losses (1) $ 74,793 $ (304 ) $ 1,745 $ (4 ) $ 76,538 $ (308 ) (1) The number of investment positions with unrealized losses at March 31, 2019 and December 31, 2018 totaled 25 and 56 , respectively.
Available-for-sale Securities by Contractual Maturity	The contractual maturities of securities available for sale at March 31, 2019 , were as follows: Amortized Cost Fair Value Within 1 year: Certificates of deposit $ 17,729 $ 17,729 Corporate debt securities 14,778 14,790 Commercial paper 11,355 11,355 Asset-backed securities 10,376 10,376 Other securities 500 500 Total 54,738 54,750 After 1 year through 5 years: Asset-backed securities 3,255 3,255 Total 3,255 3,255 Asset-backed securities related to structured program transactions 139,168 139,504 Total securities available for sale $ 197,161 $ 197,509

Loans Held For Investment, Lo_2

Loans Held For Investment, Loans Held For Sale, Notes, Certificates and Secured Borrowings (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Loans and Notes and Certificates	At March 31, 2019 and December 31, 2018 , loans held for investment, notes, certificates and secured borrowings measured at fair value on a recurring basis were as follows: Loans Held for Investment Notes, Certificates and Secured Borrowings March 31, December 31, March 31, December 31, Aggregate principal balance outstanding $ 1,805,078 $ 2,013,438 $ 1,805,078 $ 2,033,258 Net fair value adjustments (106,880 ) (130,187 ) (101,852 ) (127,383 ) Fair value $ 1,698,198 $ 1,883,251 $ 1,703,226 $ 1,905,875
Schedule of Outstanding Principal Balance of Notes, Certificates and Secured Borrowings at Fair Value	The following table provides the balances of notes, certificates and secured borrowings at fair value at the end of the periods indicated: March 31, December 31, Notes $ 1,101,961 $ 1,176,333 Certificates 539,694 648,908 Secured borrowings 61,571 80,634 Total notes, certificates and secured borrowings $ 1,703,226 $ 1,905,875
Loans Invested in by Company	At March 31, 2019 and December 31, 2018 , loans invested in by the Company for which there were no associated notes, certificates or secured borrowings (with the exception of $254.8 million and $286.3 million in loans at fair value in a consolidated securitization trust, respectively) were as follows: Loans Invested in by the Company Loans Held for Investment Loans Held for Sale Total March 31, December 31, March 31, December 31, March 31, December 31, Aggregate principal balance outstanding $ 11,233 $ 3,518 $ 584,872 $ 869,715 $ 596,105 $ 873,233 Net fair value adjustments (2,476 ) (935 ) (32,706 ) (29,694 ) (35,182 ) (30,629 ) Fair value $ 8,757 $ 2,583 $ 552,166 $ 840,021 $ 560,923 $ 842,604
Past Due Financing Receivables	Loans that were 90 days or more past due (including non-accrual loans) were as follows: March 31, 2019 December 31, 2018 Loans held for investment and loans held for sale: Outstanding principal balance $ 16,400 $ 19,707 Net fair value adjustments (13,295 ) (16,166 ) Fair value $ 3,105 $ 3,541 Number of loans (not in thousands) 2,041 2,309 Loans invested in by the Company: Outstanding principal balance $ 2,491 $ 2,060 Net fair value adjustments (2,057 ) (1,710 ) Fair value $ 434 $ 350 Number of loans (not in thousands) 414 356

Securitizations and Variable _2

Securitizations and Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2019
Variable Interest Entity [Line Items]
Summary of Select Information Related to VIEs	The following tables provide the classifications of assets and liabilities on the Company’s Condensed Consolidated Balance Sheets for its transactions with VIEs at March 31, 2019 and December 31, 2018 . Additionally, the assets and liabilities in the table below include third-party assets and liabilities of consolidated and unconsolidated VIEs only and exclude intercompany balances that eliminate in consolidation: March 31, 2019 Consolidated VIEs Unconsolidated VIEs Total Assets Restricted cash $ 25,593 $ — $ 25,593 Securities available for sale at fair value — 139,504 139,504 Loans held for investment at fair value 539,694 — 539,694 Loans held for sale by the Company at fair value 437,432 — 437,432 Accrued interest receivable 8,322 911 9,233 Other assets 2,513 33,679 36,192 Total assets $ 1,013,554 $ 174,094 $ 1,187,648 Liabilities Accrued interest payable $ 5,910 $ — $ 5,910 Accrued expenses and other liabilities 354 — 354 Notes, certificates and secured borrowings at fair value 539,694 — 539,694 Payable to securitization note holders 233,269 — 233,269 Credit facilities and securities sold under repurchase agreements 122,396 — 122,396 Total liabilities 901,623 — 901,623 Total net assets $ 111,931 $ 174,094 $ 286,025 December 31, 2018 Consolidated VIEs Unconsolidated VIEs Total Assets Restricted cash $ 43,918 $ — $ 43,918 Securities available for sale at fair value — 116,768 116,768 Loans held for investment at fair value 642,094 — 642,094 Loans held for sale by the Company at fair value 739,216 — 739,216 Accrued interest receivable 10,438 1,214 11,652 Other assets 2,498 29,206 31,704 Total assets $ 1,438,164 $ 147,188 $ 1,585,352 Liabilities Accrued interest payable $ 7,594 $ — $ 7,594 Accrued expenses and other liabilities 1,627 — 1,627 Notes, certificates and secured borrowings at fair value 648,908 — 648,908 Payable to securitization note holders 256,354 — 256,354 Credit facilities and securities sold under repurchase agreements 306,790 57,012 363,802 Total liabilities 1,221,273 57,012 1,278,285 Total net assets $ 216,891 $ 90,176 $ 307,067
Summary of Activity Related to Personal Whole Loan Securitizations	The following table summarizes activity related to the unconsolidated personal whole loan securitizations and personal whole loan CLUB Certificates with the transfers accounted for as a sale on the Company’s condensed consolidated financial statements for the first quarters of 2019 and 2018 : Three Months Ended March 31, 2019 2018 Personal Personal Whole Loan CLUB Certificates Personal Personal Whole Loan CLUB Certificates Principal derecognized from loans securitized or sold $ 293,419 $ 541,128 $ 355,248 $ 161,875 Net gains (losses) recognized from loans securitized or sold $ 2,932 $ 5,824 $ 3,097 $ 1,457 Fair value of senior securities and subordinated residual certificates retained upon settlement (1) $ 14,555 $ 26,787 $ 18,493 $ 8,102 Cash proceeds from loans securitized or sold $ 266,235 $ 513,885 $ 283,272 $ 154,839 Cash proceeds from servicing and other administrative fees on loans securitized or sold $ 3,570 $ 2,943 $ 2,350 $ 135 Cash proceeds for interest received on senior securities and subordinated residual certificates $ 1,439 $ 1,435 $ 296 $ 82 (1) For personal whole loan securitizations, the Company retained senior securities of $13.4 million and $15.1 million for the first quarters of 2019 and 2018 , respectively, and subordinated residual certificates of $1.1 million and $3.4 million for the first quarters of 2019 and 2018 , respectively.
Consolidated VIEs
Variable Interest Entity [Line Items]
Summary of Select Information Related to VIEs	The following tables present a summary of financial assets and liabilities from the Company’s involvement with consolidated VIEs at March 31, 2019 and December 31, 2018 : March 31, 2019 Assets Liabilities Net Assets LC Trust certificates $ 546,313 $ (544,732 ) $ 1,581 Securitizations 271,755 (233,702 ) 38,053 Warehouse credit facilities 195,486 (123,189 ) 72,297 Total consolidated VIEs $ 1,013,554 $ (901,623 ) $ 111,931 December 31, 2018 Assets Liabilities Net Assets LC Trust certificates $ 657,339 $ (656,088 ) $ 1,251 Securitizations 297,821 (256,901 ) 40,920 Warehouse credit facility 483,004 (308,284 ) 174,720 Total consolidated VIEs $ 1,438,164 $ (1,221,273 ) $ 216,891
Unconsolidated VIEs
Variable Interest Entity [Line Items]
Summary of Select Information Related to VIEs	The following tables summarize unconsolidated VIEs with which the Company has significant continuing involvement, but is not the primary beneficiary at March 31, 2019 and December 31, 2018 : March 31, 2019 Carrying Value Total VIE Assets Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Net Assets Securitizations $ 1,413,708 $ 71,743 $ 555 $ 12,761 $ — $ — $ 85,059 CLUB Certificates 1,375,940 67,761 356 12,861 — — 80,978 Investment Fund 35,059 — — 8,057 — — 8,057 Total unconsolidated VIEs $ 2,824,707 $ 139,504 $ 911 $ 33,679 $ — $ — $ 174,094 March 31, 2019 Maximum Exposure to Loss Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Total Exposure Securitizations $ 71,743 $ 555 $ 12,761 $ — $ — $ 85,059 CLUB Certificates 67,761 356 12,861 — — 80,978 Investment Fund — — 8,057 — — 8,057 Total unconsolidated VIEs $ 139,504 $ 911 $ 33,679 $ — $ — $ 174,094 December 31, 2018 Carrying Value Total VIE Assets Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Net Assets Securitizations $ 1,359,367 $ 68,338 $ 958 $ 11,838 $ — $ (57,012 ) $ 24,122 CLUB Certificates 973,815 48,430 256 9,115 — — 57,801 Investment Fund 35,157 — — 8,253 — — 8,253 Total unconsolidated VIEs $ 2,368,339 $ 116,768 $ 1,214 $ 29,206 $ — $ (57,012 ) $ 90,176 December 31, 2018 Maximum Exposure to Loss Securities Available for Sale Accrued Interest Receivable Other Assets Accrued Expenses and Other Liabilities Securities Sold Under Repurchase Agreements Total Exposure Securitizations $ 68,339 $ 958 $ 11,838 $ — $ — $ 81,135 CLUB Certificates 48,431 256 9,115 — — 57,802 Investment Fund — — 8,253 — — 8,253 Total unconsolidated VIEs $ 116,770 $ 1,214 $ 29,206 $ — $ — $ 147,190

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Hierarchy of Assets and Liabilities Measured on a Recurring Basis	The following tables present the fair value hierarchy for assets and liabilities measured at fair value at March 31, 2019 and December 31, 2018 : March 31, 2019 Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Fair Value Assets: Loans held for investment $ — $ — $ 1,698,198 $ 1,698,198 Loans held for investment by the Company — — 8,757 8,757 Loans held for sale by the Company — — 552,166 552,166 Securities available for sale: Securitized asset-backed senior securities and subordinated residual certificates — 60,079 11,664 71,743 CLUB Certificate asset-backed securities — — 67,761 67,761 Certificates of deposit — 17,729 — 17,729 Corporate debt securities — 14,790 — 14,790 Asset-backed securities — 13,631 — 13,631 Commercial paper — 11,355 — 11,355 Other securities — 500 — 500 Total securities available for sale — 118,084 79,425 197,509 Servicing assets — — 71,848 71,848 Total assets $ — $ 118,084 $ 2,410,394 $ 2,528,478 Liabilities: Notes, certificates and secured borrowings $ — $ — $ 1,703,226 $ 1,703,226 Loan trailing fee liability — — 10,061 10,061 Total liabilities $ — $ — $ 1,713,287 $ 1,713,287 December 31, 2018 Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Assets: Loans held for investment $ — $ — $ 1,883,251 $ 1,883,251 Loans held for investment by the Company — — 2,583 2,583 Loans held for sale by the Company — — 840,021 840,021 Securities available for sale: Securitized asset-backed senior securities and subordinated residual certificates — 56,489 11,849 68,338 CLUB Certificate asset-backed securities — — 48,430 48,430 Corporate debt securities — 17,328 — 17,328 Certificates of deposit — 14,929 — 14,929 Asset-backed securities — 11,225 — 11,225 Commercial paper — 9,720 — 9,720 Other securities — 499 — 499 Total securities available for sale — 110,190 60,279 170,469 Servicing assets — — 64,006 64,006 Total assets $ — $ 110,190 $ 2,850,140 $ 2,960,330 Liabilities: Notes, certificates and secured borrowings $ — $ — $ 1,905,875 $ 1,905,875 Loan trailing fee liability — — 10,010 10,010 Total liabilities $ — $ — $ 1,915,885 $ 1,915,885
Fair Value, by Balance Sheet Grouping	The following tables present the fair value hierarchy for financial instruments, assets, and liabilities not recorded at fair value at March 31, 2019 and December 31, 2018 : March 31, 2019 Carrying Amount Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Fair Value Assets: Cash and cash equivalents (1) $ 402,311 $ — $ 402,311 $ — $ 402,311 Restricted cash (1) 167,954 — 167,954 — 167,954 Servicer reserve receivable 406 — 406 — 406 Deposits 898 — 898 — 898 Total assets $ 571,569 $ — $ 571,569 $ — $ 571,569 Liabilities: Accrued expenses and other liabilities $ 19,838 $ — $ — $ 19,838 $ 19,838 Accounts payable 24,804 — 24,804 — 24,804 Payables to investors 72,175 — 72,175 — 72,175 Payable to securitization note holders 233,269 — 233,269 — 233,269 Credit facilities and securities sold under repurchase agreements 263,863 — 46,468 217,396 263,864 Total liabilities $ 613,949 $ — $ 376,716 $ 237,234 $ 613,950 (1) Carrying amount approximates fair value due to the short maturity of these financial instruments. December 31, 2018 Carrying Amount Level 1 Inputs Level 2 Inputs Level 3 Inputs Balance at Fair Value Assets: Cash and cash equivalents (1) $ 372,974 $ — $ 372,974 $ — $ 372,974 Restricted cash (1) 271,084 — 271,084 — 271,084 Servicer reserve receivable 669 — 669 — 669 Deposits 1,093 — 1,093 — 1,093 Total assets $ 645,820 $ — $ 645,820 $ — $ 645,820 Liabilities: Accrued expenses and other liabilities $ 18,483 $ — $ — $ 18,483 $ 18,483 Accounts payable 7,104 — 7,104 — 7,104 Payables to investors 149,052 — 149,052 — 149,052 Payable to securitization note holders 256,354 — 256,354 — 256,354 Credit facilities and securities sold under repurchase agreements 458,802 — 57,012 401,790 458,802 Total liabilities $ 889,795 $ — $ 469,522 $ 420,273 $ 889,795 (1) Carrying amount approximates fair value due to the short maturity of these financial instruments.
Asset-backed Securities Related to Structured Program Transactions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements	The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for asset-backed securities related to structured program transactions at March 31, 2019 and December 31, 2018 : Asset-Backed Securities Related to Structured Program Transactions March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 3.2 % 19.6 % 10.0 % 3.2 % 19.6 % 8.8 % Net cumulative expected loss rates (1) 8.3 % 43.5 % 20.0 % 6.3 % 43.9 % 18.4 % Cumulative expected prepayment rates (1) 18.1 % 34.1 % 28.7 % 21.0 % 33.0 % 30.1 % (1) Expressed as a percentage of the outstanding collateral balance.
Fair Value Sensitivity of Loans	The following tables present adverse changes to the fair value sensitivity of asset-backed securities related to structured program transactions to changes in key assumptions at March 31, 2019 and December 31, 2018 : March 31, 2019 Asset-Backed Securities Related to Structured Program Transactions Senior Securities Subordinated Residual Certificates CLUB Certificates Fair value of interests held $ 60,079 $ 11,664 $ 67,761 Expected weighted-average life (in years) 1.0 1.3 1.2 Discount rates 100 basis point increase $ (542 ) $ (141 ) $ (648 ) 200 basis point increase $ (1,067 ) $ (279 ) $ (1,280 ) Expected credit loss rates on underlying loans 10% adverse change $ — $ (1,679 ) $ (1,585 ) 20% adverse change $ — $ (3,092 ) $ (3,128 ) Expected prepayment rates 10% adverse change $ — $ (611 ) $ (414 ) 20% adverse change $ — $ (1,240 ) $ (793 ) December 31, 2018 Asset-Backed Securities Related to Structured Program Transactions Senior Securities Subordinated Residual Certificates CLUB Certificates Fair value of interests held $ 56,489 $ 11,849 $ 48,430 Expected weighted-average life (in years) 1.0 1.3 1.2 Discount rates 100 basis point increase $ (526 ) $ (149 ) $ (472 ) 200 basis point increase $ (1,032 ) $ (293 ) $ (932 ) Expected credit loss rates on underlying loans 10% adverse change $ — $ (1,573 ) $ (1,070 ) 20% adverse change $ — $ (3,159 ) $ (2,112 ) Expected prepayment rates 10% adverse change $ — $ (786 ) $ (291 ) 20% adverse change $ — $ (1,599 ) $ (562 )
Fair Value, Liabilities Measured on Recurring Basis	The following table presents additional information about Level 3 asset-backed subordinated residual certificates related to Company-sponsored securitization and CLUB Certificate transactions measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Fair value at beginning of period $ 60,279 $ 10,029 Additions 27,913 11,508 Redemptions — — Cash received (7,438 ) (174 ) Change in unrealized gain (loss) (166 ) 88 Other-than-temporary impairment (1,163 ) (1,322 ) Fair value at end of period $ 79,425 $ 20,129
Loans Invested in by Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements	The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for loans invested in by the Company at March 31, 2019 and December 31, 2018 : Loans Invested in by the Company March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 5.6 % 12.6 % 9.7 % 5.9 % 16.7 % 9.4 % Net cumulative expected loss rates (1) 2.8 % 37.0 % 14.2 % 2.6 % 36.8 % 13.2 % Cumulative expected prepayment rates (1) 27.2 % 41.0 % 32.7 % 27.0 % 45.5 % 32.5 % (1) Expressed as a percentage of the original principal balance of the loan.
Fair Value of Assets Measured on a Recurring Basis	The following tables present additional information about Level 3 loans invested in by the Company measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Loans Held for Investment by the Company Loans Held for Sale by the Company Total Loans Invested in by the Company Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2018 $ 3,518 $ (935 ) $ 2,583 $ 869,715 $ (29,694 ) $ 840,021 $ 873,233 $ (30,629 ) $ 842,604 Purchases 381 (379 ) 2 843,548 — 843,548 843,929 (379 ) 843,550 Transfers (to) from loans held for investment and/or loans held for sale 8,533 (1,471 ) 7,062 (8,310 ) 1,471 (6,839 ) 223 — 223 Sales — — — (1,045,880 ) 21,750 (1,024,130 ) (1,045,880 ) 21,750 (1,024,130 ) Principal payments and retirements (535 ) — (535 ) (67,818 ) — (67,818 ) (68,353 ) — (68,353 ) Charge-offs, net of recoveries (664 ) 437 (227 ) (6,383 ) 6,180 (203 ) (7,047 ) 6,617 (430 ) Change in fair value recorded in earnings — (128 ) (128 ) — (32,413 ) (32,413 ) — (32,541 ) (32,541 ) Balance at March 31, 2019 $ 11,233 $ (2,476 ) $ 8,757 $ 584,872 $ (32,706 ) $ 552,166 $ 596,105 $ (35,182 ) $ 560,923 Loans Held for Investment by the Company Loans Held for Sale by the Company Total Loans Invested in by the Company Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2017 $ 371,379 $ (10,149 ) $ 361,230 $ 242,273 $ (6,448 ) $ 235,825 $ 613,652 $ (16,597 ) $ 597,055 Purchases 1,496 (160 ) 1,336 791,675 (280 ) 791,395 793,171 (440 ) 792,731 Transfers (to) from loans held for investment and/or loans held for sale 106 — 106 (106 ) — (106 ) — — — Sales — — — (742,732 ) 10,048 (732,684 ) (742,732 ) 10,048 (732,684 ) Principal payments and retirements (32,194 ) — (32,194 ) (30,418 ) — (30,418 ) (62,612 ) — (62,612 ) Charge-offs, net of recoveries (1,172 ) 973 (199 ) (2,215 ) 2,203 (12 ) (3,387 ) 3,176 (211 ) Change in fair value recorded in earnings — (12,821 ) (12,821 ) — (15,656 ) (15,656 ) — (28,477 ) (28,477 ) Balance at March 31, 2018 $ 339,615 $ (22,157 ) $ 317,458 $ 258,477 $ (10,133 ) $ 248,344 $ 598,092 $ (32,290 ) $ 565,802
Fair Value Sensitivity of Loans	The fair value sensitivity of loans invested in by the Company to adverse changes in key assumptions as of March 31, 2019 and December 31, 2018 , are as follows: March 31, December 31, Fair value of loans invested in by the Company $ 560,923 $ 842,604 Expected weighted-average life (in years) 1.5 1.4 Discount rates 100 basis point increase $ (6,793 ) $ (10,487 ) 200 basis point increase $ (13,424 ) $ (20,720 ) Expected credit loss rates on underlying loans 10% adverse change $ (8,579 ) $ (11,304 ) 20% adverse change $ (17,087 ) $ (22,504 ) Expected prepayment rates 10% adverse change $ (2,080 ) $ (2,422 ) 20% adverse change $ (4,117 ) $ (4,785 )
Servicing Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements	The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for servicing assets at March 31, 2019 and December 31, 2018 : Servicing Assets March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 5.9 % 14.8 % 8.7 % 4.8 % 16.7 % 9.0 % Net cumulative expected loss rates (1) 2.9 % 38.3 % 12.2 % 2.8 % 38.7 % 12.5 % Cumulative expected prepayment rates (1) 27.1 % 36.5 % 31.8 % 13.9 % 42.9 % 31.9 % Total market servicing rates (% per annum on outstanding principal balance) (2) 0.66 % 0.66 % 0.66 % 0.66 % 0.66 % 0.66 % (1) Expressed as a percentage of the original principal balance of the loan. (2) Includes collection fees estimated to be paid to a hypothetical third-party servicer.
Fair Value of Assets Measured on a Recurring Basis	Fair Value Reconciliation The following table presents additional information about Level 3 servicing assets measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Fair value at beginning of period $ 64,006 $ 33,676 Issuances (1) 15,846 11,980 Change in fair value, included in investor fees (11,039 ) (5,606 ) Other net changes included in deferred revenue 3,035 834 Fair value at end of period $ 71,848 $ 40,884 (1) Represents the gains or losses on sales of the related loans.
Fair Value Disclosure And Measurement	The table below shows the impact on the estimated fair value of servicing assets, calculated using different market servicing rate assumptions as of March 31, 2019 and December 31, 2018 : Servicing Assets March 31, December 31, 2018 Weighted-average market servicing rate assumptions 0.66 % 0.66 % Change in fair value from: Servicing rate increase by 0.10% $ (11,800 ) $ (10,878 ) Servicing rate decrease by 0.10% $ 11,806 $ 10,886
Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements	The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for loans held for investment, notes, certificates and secured borrowings at March 31, 2019 and December 31, 2018 : Loans Held for Investment, Notes, Certificates and Secured Borrowings March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Average Minimum Maximum Weighted- Average Discount rates 6.1 % 12.2 % 8.8 % 6.3 % 16.4 % 9.1 % Net cumulative expected loss rates (1) 2.8 % 36.4 % 12.6 % 2.8 % 36.9 % 12.8 % Cumulative expected prepayment rates (1) 28.0 % 35.8 % 31.4 % 27.8 % 40.3 % 31.2 % (1) Expressed as a percentage of the original principal balance of the loan, note, certificate or secured borrowing.
Fair Value of Assets Measured on a Recurring Basis	The following tables present additional information about Level 3 loans held for investment, loans held for sale, and notes, certificates and secured borrowings measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Loans Held for Investment Loans Held for Sale Notes, Certificates and Secured Borrowings Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2018 $ 2,013,438 $ (130,187 ) $ 1,883,251 $ — $ — $ — $ 2,033,258 $ (127,383 ) $ 1,905,875 Purchases 193,092 (21 ) 193,071 563,036 — 563,036 — — — Transfers (to) from loans held for investment and/or loans held for sale (223 ) — (223 ) — — — — — — Issuances — — — — — — 193,092 — 193,092 Sales — — — (563,036 ) (1,165 ) (564,201 ) — — — Principal payments and retirements (340,444 ) — (340,444 ) — — — (360,487 ) 14 (360,473 ) Charge-offs, net of recoveries (60,785 ) 46,876 (13,909 ) — — — (60,785 ) 46,876 (13,909 ) Change in fair value recorded in earnings — (23,548 ) (23,548 ) — 1,165 1,165 — (21,359 ) (21,359 ) Balance at March 31, 2019 $ 1,805,078 $ (106,880 ) $ 1,698,198 $ — $ — $ — $ 1,805,078 $ (101,852 ) $ 1,703,226 Loans Held for Investment Loans Held for Sale Notes, Certificates and Secured Borrowings Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Outstanding Principal Balance Valuation Adjustment Fair Value Balance at December 31, 2017 $ 3,141,391 $ (209,066 ) $ 2,932,325 $ — $ — $ — $ 3,161,080 $ (206,312 ) $ 2,954,768 Purchases 292,114 9 292,123 1,133,277 (1,772 ) 1,131,505 — — — Issuances — — — — — — 292,461 — 292,461 Sales — — — (1,133,277 ) 835 (1,132,442 ) — — — Principal payments and retirements (500,949 ) — (500,949 ) — — — (503,710 ) 8 (503,702 ) Charge-offs, net of recoveries (102,791 ) 85,332 (17,459 ) — — — (102,791 ) 85,332 (17,459 ) Change in fair value recorded in earnings — (70,627 ) (70,627 ) — 937 937 — (70,651 ) (70,651 ) Balance at March 31, 2018 $ 2,829,765 $ (194,352 ) $ 2,635,413 $ — $ — $ — $ 2,847,040 $ (191,623 ) $ 2,655,417
Loan Trailing Fee Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements	The following table presents quantitative information about the significant unobservable inputs used for the Company’s Level 3 fair value measurements for loan trailing fee liability at March 31, 2019 and December 31, 2018 : Loan Trailing Fee Liability March 31, 2019 December 31, 2018 Minimum Maximum Weighted- Minimum Maximum Weighted- Discount rates 5.9 % 14.8 % 9.4 % 4.8 % 16.7 % 9.5 % Net cumulative expected loss rates (1) 2.9 % 38.2 % 14.2 % 2.8 % 38.7 % 14.0 % Cumulative expected prepayment rates (1) 27.6 % 41.1 % 32.3 % 16.5 % 43.1 % 32.2 % (1) Expressed as a percentage of the original principal balance of the loan.
Fair Value, Liabilities Measured on Recurring Basis	The following table presents additional information about Level 3 loan trailing fee liability measured at fair value on a recurring basis for the first quarters of 2019 and 2018 : Three Months Ended 2019 2018 Fair value at beginning of period $ 10,010 $ 8,432 Issuances 1,490 1,775 Cash payment of Loan Trailing Fee (1,969 ) (1,554 ) Change in fair value, included in Origination and Servicing 530 171 Fair value at end of period $ 10,061 $ 8,824

Property, Equipment and Softw_2

Property, Equipment and Software, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment [Abstract]
Property, Equipment and Software, Net	Property, equipment and software, net, consist of the following: March 31, December 31, Internally developed software (1) $ 149,882 $ 141,233 Leasehold improvements 32,178 31,109 Computer equipment 25,289 24,204 Purchased software 10,650 10,139 Furniture and fixtures 8,252 8,468 Construction in progress 7,173 4,106 Total property, equipment and software 233,424 219,259 Accumulated depreciation and amortization (115,267 ) (105,384 ) Total property, equipment and software, net $ 118,157 $ 113,875 (1) Includes $15.9 million and $10.3 million of development in progress as of March 31, 2019 and December 31, 2018 , respectively.

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Other assets consist of the following: March 31, December 31, Operating lease assets (1) $ 107,455 $ — Loan servicing assets, at fair value (2) 71,848 64,006 Prepaid expenses 22,828 25,598 Accounts receivable 18,273 19,322 Other investments 8,507 8,503 Deferred financing costs 2,391 2,117 Servicer reserve receivable 406 669 Other 3,556 4,752 Total other assets $ 235,264 $ 124,967 (1) The Company adopted ASU 2016-02, Leases, as of January 1, 2019 and has elected not to restate comparative periods presented in the condensed consolidated financial statements. For additional information, see “ Note 2. Summary of Significant Accounting Policies ” and “ Note 17. Leases .” (2) Loans underlying loan servicing rights had a total outstanding principal balance of $11.8 billion and $10.9 billion as of March 31, 2019 and December 31, 2018 , respectively.

Accrued Expenses and Other Li_2

Accrued Expenses and Other Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Accrued Expenses and Other Liabilities	Accrued expenses and other liabilities consist of the following: March 31, December 31, Operating lease liabilities (1) $ 122,667 $ — Accrued expenses 38,564 42,507 Transaction fee refund reserve 20,695 19,543 Accrued compensation 17,461 36,105 Contingent liabilities (2) 12,700 12,750 Deferred revenue 12,386 9,420 Loan trailing fee liability, at fair value 10,061 10,010 Payable to issuing banks 1,229 1,182 Deferred rent (1) — 16,211 Other 3,178 4,390 Total accrued expenses and other liabilities $ 238,941 $ 152,118 (1) The Company adopted ASU 2016-02, Leases, as of January 1, 2019 and has elected not to restate comparative periods presented in the condensed consolidated financial statements. As such, effective January 1, 2019, deferred rent is included within operating lease liabilities. For additional information, see “ Note 2. Summary of Significant Accounting Policies ” and “ Note 17. Leases .” (2) See “ Note 18. Commitments and Contingencies ” for further information.

Employee Incentive Plans (Table

Employee Incentive Plans (Tables)	3 Months Ended
	Mar. 31, 2019
Postemployment Benefits [Abstract]
Total Stock-based Compensation Expense	Stock-based compensation expense was as follows for the periods presented: Three Months Ended 2019 2018 RSUs and PBRSUs $ 17,185 $ 14,793 Stock options 715 2,567 ESPP 352 441 Total stock-based compensation expense $ 18,252 $ 17,801
Schedule of Stock-based Compensation Expense Recorded in Condensed Consolidated Statement of Operations	The following table presents the Company’s stock-based compensation expense recorded in the Condensed Consolidated Statements of Operations : Three Months Ended 2019 2018 Sales and marketing $ 1,571 $ 1,860 Origination and servicing 924 1,072 Engineering and product development 5,231 5,279 Other general and administrative 10,526 9,590 Total stock-based compensation expense $ 18,252 $ 17,801
Schedule of RSU Activity	The following table summarizes the activities for the Company’s RSUs during the first quarter of 2019 : Number of Units Weighted- Average Grant Date Fair Value Unvested at December 31, 2018 43,199,014 $ 4.05 Granted 26,113,561 $ 3.13 Vested (3,645,135 ) $ 4.56 Forfeited/expired (3,544,662 ) $ 3.91 Unvested at March 31, 2019 62,122,778 $ 3.64
Schedule of PBRSU Activity	The following table summarizes the activities for the Company’s PBRSUs during the first quarter of 2019 : Number of Units Weighted- Average Grant Date Fair Value Unvested at December 31, 2018 1,273,218 $ 3.71 Granted 1,869,015 $ 3.28 Vested (114,221 ) $ 5.20 Forfeited/expired (1) (295,463 ) $ 3.46 Unvested at March 31, 2018 2,732,549 $ 3.38 (1) Represents the portion of PBRSUs granted in 2018 that were unearned as a result of not achieving certain pre-established performance metrics during the performance period.

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Lease Costs	Components of net lease costs for the first quarter of 2019 were as follows: Three Months Ended Net Lease Costs Income Statement Classification 2019 2018 Operating lease costs (1) Other general and administrative expense $ (5,192 ) $ (4,316 ) Sublease income Other revenue 1,007 77 Net lease costs $ (4,185 ) $ (4,239 ) (1) Includes variable lease costs of $0.3 million and $0.2 million for the first quarters of 2019 and 2018 , respectively.
Supplemental Balance Sheet Information	Supplemental balance sheet information as of March 31, 2019 related to leases was as follows: ROU Assets and Lease Liabilities Balance Sheet Classification March 31, 2019 Operating lease assets Other assets $ 107,455 Operating lease liabilities (1) Accrued expenses and other liabilities $ 122,667 (1) The difference between operating lease assets and operating lease liabilities is the unamortized balance of deferred rent, which prior to January 1, 2019 was included as a separate liability within Accrued expenses and other liabilities.
Supplemental Cash Flow Information	Supplemental cash flow information for the first quarter of 2019 related to the Company’s operating leases was as follows: Three Months Ended March 31, 2019 Non-cash operating activity: Leased assets obtained in exchange for new operating lease liabilities (1) $ 15,277 (1) Represents non-cash activity and, accordingly, is not reflected in the Condensed Consolidated Statements of Cash Flows .
Future Minimum Undiscounted Lease Payments	The Company’s future minimum undiscounted lease payments under operating leases and anticipated sublease revenue as of March 31, 2019 were as follows: Operating Lease Payments Sublease Revenue Net 2019 $ 12,750 $ (3,411 ) $ 9,339 2020 19,442 (5,232 ) 14,210 2021 19,900 (5,389 ) 14,511 2022 15,626 (2,304 ) 13,322 2023 11,624 — 11,624 Thereafter 86,277 — 86,277 Total lease payments $ 165,619 $ (16,336 ) $ 149,283 Discount effect 42,952 Present value of future minimum lease payments $ 122,667
Weighted-average Remaining Lease Term and Discount Rate	The weighted-average remaining lease term and discount rate used in the calculation of the Company’s operating lease assets and liabilities were as follows: Lease Term and Discount Rate March 31, 2019 Weighted-average remaining lease term (in years) 9.95 Weighted-average discount rate 5.0 %

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Operating lease assets		$ 95,200,000
Present value of future minimum lease payments	$ 122,667,000	$ 110,100,000	$ 0
Cumulative effect in retained earnings	$ 0

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Disaggregation of Revenue by Source (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 0	$ 0
Transferred over Time
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	136,092	112,018
Transferred over Time | Transaction fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	135,397	111,182
Transferred over Time | Referral fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 695	$ 836

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Bad debt expense	$ 0	$ 0
Contract assets	0		$ 0
Contract liabilities	0		0
Deferred contract costs	0		0
Revenue recognized from performance obligations related to prior periods	0	$ 0
Management fees, SMAs and referral fees
Disaggregation of Revenue [Line Items]
Accounts receivable	$ 200		$ 500

Net Loss Per Share - Basic and

Net Loss Per Share - Basic and Diluted Net Income (Loss) per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
LendingClub net loss	$ (19,935)	$ (31,181)
Weighted-average common shares - Basic (shares)	430,544,355	418,299,301
Weighted-average common shares - Diluted (shares)	430,544,355	418,299,301
Net loss per share attributable to LendingClub:
Basic ($ per share)	$ (0.05)	$ (0.07)
Diluted ($ per share)	$ (0.05)	$ (0.07)

Securities Available for Sale -

Securities Available for Sale - Amortized cost/fair value (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 197,161	$ 170,189
Gross Unrealized Gains	607	588
Gross Unrealized Losses	(259)	(308)
Fair Value	197,509	170,469
Securities pledged as collateral at fair value	54,400	64,100
Securitized asset-backed senior securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	59,749	56,363
Gross Unrealized Gains	330	188
Gross Unrealized Losses	0	(62)
Fair Value	60,079	56,489
Securities pledged as collateral at fair value	45,200	53,600
CLUB Certificate asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	67,869	48,505
Gross Unrealized Gains	70	150
Gross Unrealized Losses	(178)	(225)
Fair Value	67,761	48,430
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	17,729	14,929
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	17,729	14,929
Securitized asset-backed subordinated residual certificates
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,550	11,602
Gross Unrealized Gains	194	249
Gross Unrealized Losses	(80)	(2)
Fair Value	11,664	11,849
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	13,631	11,232
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(1)	(7)
Fair Value	13,631	11,225
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,778	17,339
Gross Unrealized Gains	12	1
Gross Unrealized Losses	0	(12)
Fair Value	14,790	17,328
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,355	9,720
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	11,355	9,720
Other securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	500	499
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	500	499
Asset-backed securities, securitized loans and receivables, subject to restrictions on transfer
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 138,100	$ 115,100

Securities Available for Sale_2

Securities Available for Sale - Continuous loss (Details) $ in Thousands	Mar. 31, 2019USD ($)position	Dec. 31, 2018USD ($)position
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	$ 14,798	$ 74,793
Unrealized Losses, Less than 12 months	(259)	(304)
Fair Value, 12 months or longer	0	1,745
Unrealized Losses, 12 months or longer	0	(4)
Fair Value	14,798	76,538
Unrealized Losses	$ (259)	$ (308)
Number of positions with unrealized losses | position	25	56
Asset-backed securities related to structured program transactions
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	$ 10,892	$ 49,047
Unrealized Losses, Less than 12 months	(258)	(285)
Fair Value, 12 months or longer	0	1,745
Unrealized Losses, 12 months or longer	0	(4)
Fair Value	10,892	50,792
Unrealized Losses	(258)	(289)
Asset-backed securities
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	3,906	11,208
Unrealized Losses, Less than 12 months	(1)	(7)
Fair Value, 12 months or longer	0	0
Unrealized Losses, 12 months or longer	0	0
Fair Value	3,906	11,208
Unrealized Losses	$ (1)	(7)
Corporate debt securities
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months		14,538
Unrealized Losses, Less than 12 months		(12)
Fair Value, 12 months or longer		0
Unrealized Losses, 12 months or longer		0
Fair Value		14,538
Unrealized Losses		$ (12)

Securities Available for Sale_3

Securities Available for Sale - Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair value
Fair value, within 1 year	$ 54,750
Fair value, after 1 year through 5 years	3,255
Fair value	197,509	$ 170,469
Amortized cost
Amortized cost, within 1 year	54,738
amortized cost, after 1 year through 5 years	3,255
Amortized Cost	197,161	170,189
Certificates of deposit
Fair value
Fair value, within 1 year	17,729
Fair value	17,729	14,929
Amortized cost
Amortized cost, within 1 year	17,729
Amortized Cost	17,729	14,929
Corporate debt securities
Fair value
Fair value, within 1 year	14,790
Fair value	14,790	17,328
Amortized cost
Amortized cost, within 1 year	14,778
Amortized Cost	14,778	17,339
Asset-backed securities
Fair value
Fair value, within 1 year	10,376
Fair value, after 1 year through 5 years	3,255
Fair value	13,631	11,225
Amortized cost
Amortized cost, within 1 year	10,376
amortized cost, after 1 year through 5 years	3,255
Amortized Cost	13,631	11,232
Commercial paper
Fair value
Fair value, within 1 year	11,355
Fair value	11,355	9,720
Amortized cost
Amortized cost, within 1 year	11,355
Amortized Cost	11,355	9,720
Other securities
Fair value
Fair value, within 1 year	500
Fair value	500	499
Amortized cost
Amortized cost, within 1 year	500
Amortized Cost	500	$ 499
Asset-backed Securities Related to Structured Program Transactions
Fair value
Fair value	139,504
Amortized cost
Amortized Cost	$ 139,168

Securities Available for Sale_4

Securities Available for Sale - Gross realized losses (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Schedule of Securities Available-for-sale [Line Items]
Other-than-temporary impairment charges	$ 1,200,000	$ 1,300,000
Credit losses recognized into earnings for other-than-temporary impaired securities	0	0
Proceeds from sale of other securities available-for-sale	3,100,000	0
Asset-backed securities
Schedule of Securities Available-for-sale [Line Items]
Sale of asset-backed securities	785,500,000	$ 440,600,000
Realized gains (losses), net	$ 0		$ 0

Loans Held For Investment, Lo_3

Loans Held For Investment, Loans Held For Sale, Notes, Certificates and Secured Borrowings (Detail) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment at fair value	[1]	$ 1,698,198	$ 1,883,251
Notes, certificates and secured borrowings, fair value	[1]	1,703,226	1,905,875
Loans held for sale by the Company, fair value	[1]	552,166	840,021
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes		1,101,961	1,176,333
Certificates		539,694	648,908
Secured borrowings		61,571	80,634
Notes, certificates and secured borrowings, fair value		1,703,226	1,905,875
Fair Value, Measurements, Recurring | Loans Invested in by Company
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal balance outstanding		596,105	873,233
Fair value adjustments		(35,182)	(30,629)
Fair value of loans invested in by the Company		560,923	842,604
Fair Value, Measurements, Recurring | Loans Held for Investment
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal balance outstanding		1,805,078	2,013,438
Fair value adjustments		(106,880)	(130,187)
Loans held for investment at fair value		1,698,198	1,883,251
Fair Value, Measurements, Recurring | Loans Held for Investment | Loans Invested in by Company
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal balance outstanding		11,233	3,518
Fair value adjustments		(2,476)	(935)
Loans held for investment at fair value		8,757	2,583
Fair Value, Measurements, Recurring | Notes, Certificates and Secured Borrowings
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal balance outstanding		1,805,078	2,033,258
Fair value adjustments		(101,852)	(127,383)
Notes, certificates and secured borrowings, fair value		1,703,226	1,905,875
Fair Value, Measurements, Recurring | Loans Held For Sale | Loans Invested in by Company
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal balance outstanding		584,872	869,715
Fair value adjustments		(32,706)	(29,694)
Loans held for sale by the Company, fair value		$ 552,166	$ 840,021
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Loans Held For Investment, Lo_4

Loans Held For Investment, Loans Held For Sale, Notes, Certificates and Secured Borrowings - Past Due Table (Details) $ in Thousands	Mar. 31, 2019USD ($)Loan	Dec. 31, 2018USD ($)Loan
Loans and Loans Held for Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding principal balance	$ 16,400	$ 19,707
Net fair value adjustments	(13,295)	(16,166)
Fair value	$ 3,105	$ 3,541
Number of loans (not in thousands) | Loan	2,041	2,309
Loans Invested in by Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Outstanding principal balance	$ 2,491	$ 2,060
Net fair value adjustments	(2,057)	(1,710)
Fair value	$ 434	$ 350
Number of loans (not in thousands) | Loan	414	356

Loans Held For Investment, Lo_5

Loans Held For Investment, Loans Held For Sale, Notes, Certificates and Secured Borrowings - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Net interest income	$ (9,917)	$ (1,538)
Loans and Loans Held for Sale
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Nonaccrual policy	90 days
Loans Invested in by Company
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Loans hed for investment and loans held for sale, fair value	$ 560,923	565,802	$ 842,604	$ 597,055
Net change in fair value recorded in earnings on loans invested in by the Company	(32,541)	(28,477)
Outstanding Principal Balance, Purchases	843,929	793,171
Outstanding Principal Balance, Sales	(1,045,880)	(742,732)
Outstanding Principal Balance, Principal payments and retirements	(68,353)	$ (62,612)
Fair Value, Measurements, Recurring | Loans Invested in by Company
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Fair value adjustments	(35,182)		(30,629)
Net interest income	20,500
Aggregate principal balance outstanding	596,105		873,233
Fair Value, Measurements, Recurring | Loans Invested in by Company | Loans Held for Sale for Future Anticipated Securitization and Club Certificate Transactions, and Sales to Whole Loan Investors [Member]
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Aggregate principal balance outstanding	314,000
Fair Value, Measurements, Recurring | Loans Invested in by Company | Loans Held For Sale
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Fair value adjustments	(32,706)		(29,694)
Aggregate principal balance outstanding	584,872		869,715
Whole Loan Investors | Loans Invested in by Company
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Outstanding Principal Balance, Principal payments and retirements	(211,300)
Secured Borrowings | Loans Held for Investment
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Loans pledged as collateral	59,400		81,100
Pledged Assets Separately Reported, Loans Pledged as Collateral, at Fair Value	56,500		76,500
Payables to Securitization Holders | Loans Held for Investment
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Loans pledged as collateral	270,900		294,800
Revolving Credit Facility | Warehouse Credit Facilities I and II | Loans Held For Sale
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Loans pledged as collateral	193,000		467,400
Personal whole loans | Loans Invested in by Company
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Securities issued in securitization transaction, aggregate value	834,500
Variable Interest Entity, Primary Beneficiary [Member] | Loans Invested in by Company | Loans Related to Consolidation of Securitization Trust [Member]
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Loans hed for investment and loans held for sale, fair value	270,900
Loans Related to Consolidation of Securitization Trust [Member] | Variable Interest Entity, Primary Beneficiary [Member] | Loans Invested in by Company
Loans, Notes and Certificates, and Loan Servicing Rights [Line Items]
Loans hed for investment and loans held for sale, fair value	$ 254,800		$ 286,300

Securitizations and Variable _3

Securitizations and Variable Interest Entities - Summary of Select Information Related to VIEs (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Restricted cash	[1]	$ 167,954	$ 271,084
Securities available for sale at fair value		197,509	170,469
Loans held for investment at fair value	[1]	1,698,198	1,883,251
Loans held for sale by the Company at fair value (1)	[1]	552,166	840,021
Accrued interest receivable	[1]	19,657	22,255
Other assets	[1]	235,264	124,967
Total assets		3,417,081	3,819,527
Accrued interest payable	[1]	14,929	19,241
Accrued expenses and other liabilities	[1]	238,941	152,118
Notes, certificates and secured borrowings at fair value	[1]	1,703,226	1,905,875
Payable to securitization note holders (1)	[1]	233,269	256,354
Credit facilities and securities sold under repurchase agreements	[1]	263,863	458,802
Liabilities		2,551,207	2,948,546
Consolidated VIEs
Variable Interest Entity [Line Items]
Restricted cash		25,593	43,918
Securities available for sale at fair value		0	0
Loans held for investment at fair value		539,694	642,094
Loans held for sale by the Company at fair value (1)		437,432	739,216
Accrued interest receivable		8,322	10,438
Other assets		2,513	2,498
Total assets		1,013,554	1,438,164
Accrued interest payable		5,910	7,594
Accrued expenses and other liabilities		354	1,627
Notes, certificates and secured borrowings at fair value		539,694	648,908
Payable to securitization note holders (1)		233,269	256,354
Credit facilities and securities sold under repurchase agreements		122,396	306,790
Liabilities		901,623	1,221,273
Total net assets		111,931	216,891
Unconsolidated VIEs
Variable Interest Entity [Line Items]
Restricted cash		0	0
Securities available for sale at fair value		139,504	116,768
Loans held for investment at fair value		0	0
Loans held for sale by the Company at fair value (1)		0	0
Accrued interest receivable		911	1,214
Other assets		33,679	29,206
Total assets		174,094	147,188
Accrued interest payable		0	0
Accrued expenses and other liabilities		0	0
Notes, certificates and secured borrowings at fair value		0	0
Payable to securitization note holders (1)		0	0
Credit facilities and securities sold under repurchase agreements		0	57,012
Liabilities		0	57,012
Total net assets		174,094	90,176
Total
Variable Interest Entity [Line Items]
Restricted cash		25,593	43,918
Securities available for sale at fair value		139,504	116,768
Loans held for investment at fair value		539,694	642,094
Loans held for sale by the Company at fair value (1)		437,432	739,216
Accrued interest receivable		9,233	11,652
Other assets		36,192	31,704
Total assets		1,187,648	1,585,352
Accrued interest payable		5,910	7,594
Accrued expenses and other liabilities		354	1,627
Notes, certificates and secured borrowings at fair value		539,694	648,908
Payable to securitization note holders (1)		233,269	256,354
Credit facilities and securities sold under repurchase agreements		122,396	363,802
Liabilities		901,623	1,278,285
Total net assets		$ 286,025	$ 307,067
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Securitizations and Variable _4

Securitizations and Variable Interest Entities - Summary of Financial Asset and Liability Involvement with Consolidated VIEs (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Assets	$ 3,417,081	$ 3,819,527
Liabilities	(2,551,207)	(2,948,546)
Consolidated VIEs
Variable Interest Entity [Line Items]
Assets	1,013,554	1,438,164
Liabilities	(901,623)	(1,221,273)
Net Assets	111,931	216,891
LC Trust Certificates | Consolidated VIEs
Variable Interest Entity [Line Items]
Assets	546,313	657,339
Liabilities	(544,732)	(656,088)
Net Assets	1,581	1,251
Securitizations | Consolidated VIEs
Variable Interest Entity [Line Items]
Assets	271,755	297,821
Liabilities	(233,702)	(256,901)
Net Assets	38,053	40,920
Warehouse Credit Facilities | Consolidated VIEs
Variable Interest Entity [Line Items]
Assets	195,486	483,004
Liabilities	(123,189)	(308,284)
Net Assets	$ 72,297	$ 174,720

Securitizations and Variable _5

Securitizations and Variable Interest Entities - Unconsolidated VIEs with Significant Continuing Involvement (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Maximum Exposure to Loss	$ 6,000	$ 6,000
Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	2,824,707	2,368,339
Carrying Value, Net Assets	174,094	90,176
Maximum Exposure to Loss	174,094	147,190
Securitizations | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	1,413,708	1,359,367
Carrying Value, Net Assets	85,059	24,122
Maximum Exposure to Loss	85,059	81,135
CLUB Certificates | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	1,375,940	973,815
Carrying Value, Net Assets	80,978	57,801
Maximum Exposure to Loss	80,978	57,802
Investment Fund | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	35,059	35,157
Carrying Value, Net Assets	8,057	8,253
Maximum Exposure to Loss	8,057	8,253
Securities Available for Sale | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	139,504	116,768
Maximum Exposure to Loss	139,504	116,770
Securities Available for Sale | Securitizations | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	71,743	68,338
Maximum Exposure to Loss	71,743	68,339
Securities Available for Sale | CLUB Certificates | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	67,761	48,430
Maximum Exposure to Loss	67,761	48,431
Securities Available for Sale | Investment Fund | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	0	0
Maximum Exposure to Loss	0	0
Accrued Interest Receivable | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	911	1,214
Maximum Exposure to Loss	911	1,214
Accrued Interest Receivable | Securitizations | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	555	958
Maximum Exposure to Loss	555	958
Accrued Interest Receivable | CLUB Certificates | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	356	256
Maximum Exposure to Loss	356	256
Accrued Interest Receivable | Investment Fund | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	0	0
Maximum Exposure to Loss	0	0
Other Assets | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	33,679	29,206
Maximum Exposure to Loss	33,679	29,206
Other Assets | Securitizations | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	12,761	11,838
Maximum Exposure to Loss	12,761	11,838
Other Assets | CLUB Certificates | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	12,861	9,115
Maximum Exposure to Loss	12,861	9,115
Other Assets | Investment Fund | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Assets	8,057	8,253
Maximum Exposure to Loss	8,057	8,253
Accrued Expenses and Other Liabilities | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	0
Maximum Exposure to Loss	0	0
Securities Sold under Agreements to Repurchase | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	(57,012)
Maximum Exposure to Loss	0	0
Securitizations | Accrued Expenses and Other Liabilities | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	0
Maximum Exposure to Loss	0	0
Securitizations | Securities Sold under Agreements to Repurchase | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	(57,012)
Maximum Exposure to Loss	0	0
CLUB Certificates | Accrued Expenses and Other Liabilities | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	0
Maximum Exposure to Loss	0	0
CLUB Certificates | Securities Sold under Agreements to Repurchase | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	0
Maximum Exposure to Loss	0	0
Investment Fund | Accrued Expenses and Other Liabilities | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	0
Maximum Exposure to Loss	0	0
Investment Fund | Securities Sold under Agreements to Repurchase | Unconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying Value, Liabilities	0	0
Maximum Exposure to Loss	$ 0	$ 0
Other Assets
Variable Interest Entity [Line Items]
Ownership (percent)	23.00%
Other assets	$ 8,100

Securitizations and Variable _6

Securitizations and Variable Interest Entities - Summary of Personal Whole Loan Securitizations and Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 13, 2018
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Fair Value	$ 197,509		$ 170,469
Personal Whole Loan Securitization
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Principal derecognized from loans securitized or sold	293,419	$ 355,248		$ 300,000
Net gains (losses) recognized from loans securitized or sold	2,932	3,097
Fair Value	14,555	18,493
Cash proceeds from loans securitized or sold	266,235	283,272
Cash proceeds from servicing and other administrative fees on loans securitized or sold	3,570	2,350
Cash proceeds for interest received on senior securities and subordinated residual certificates	1,439	296
Personal Whole Loan Securitization | Senior securities
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Transferor's Interests Retained in Transferred Financial Assets, Fair Value	13,400	15,100
Personal Whole Loan Securitization | Subordinated residual certificates
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Transferor's Interests Retained in Transferred Financial Assets, Fair Value	1,100	3,400
Personal Whole Loan CLUB Certificates
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Line Items]
Principal derecognized from loans securitized or sold	541,128	161,875
Net gains (losses) recognized from loans securitized or sold	5,824	1,457
Fair Value	26,787	8,102
Cash proceeds from loans securitized or sold	513,885	154,839
Cash proceeds from servicing and other administrative fees on loans securitized or sold	2,943	135
Cash proceeds for interest received on senior securities and subordinated residual certificates	$ 1,435	$ 82

Securitizations and Variable _7

Securitizations and Variable Interest Entities - Off-balance Sheet Loans Sold or Securitized (Details) - Off-balance Sheet Loans - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Outstanding principal balance	$ 2,800	$ 2,300
Off-balance sheet loans, principal amount outstanding, past due	$ 89	$ 87.1

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Loans, Loan Servicing Rights, Related Notes and Certificates (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	[1]	$ 1,698,198	$ 1,883,251
Loans held for investment by the Company	[1]	8,757	2,583
Loans held for sale by the Company, fair value	[1]	552,166	840,021
Securities available for sale at fair value		197,509	170,469
Servicing assets		71,848	64,006
Total assets		2,528,478	2,960,330
Notes, certificates and secured borrowings	[1]	1,703,226	1,905,875
Loan trailing fee liability		10,061	10,010
Total liabilities		1,713,287	1,915,885
Securitized asset-backed senior securities and subordinated residual certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		71,743	68,338
CLUB Certificate asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		67,761	48,430
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		14,790	17,328
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		17,729	14,929
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		13,631	11,225
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		11,355	9,720
Other securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		500	499
Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment		0	0
Loans held for investment by the Company		0	0
Loans held for sale by the Company, fair value		0	0
Securities available for sale at fair value		0	0
Servicing assets		0	0
Total assets		0	0
Notes, certificates and secured borrowings		0	0
Loan trailing fee liability		0	0
Total liabilities		0	0
Level 1 Inputs | Securitized asset-backed senior securities and subordinated residual certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 1 Inputs | CLUB Certificate asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 1 Inputs | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 1 Inputs | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value			0	$ 0
Level 1 Inputs | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 1 Inputs | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 1 Inputs | Other securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment		0	0
Loans held for investment by the Company		0	0
Loans held for sale by the Company, fair value		0	0
Securities available for sale at fair value		118,084	110,190
Servicing assets		0	0
Total assets		118,084	110,190
Notes, certificates and secured borrowings		0	0
Loan trailing fee liability		0	0
Total liabilities		0	0
Level 2 Inputs | Securitized asset-backed senior securities and subordinated residual certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		60,079	56,489
Level 2 Inputs | CLUB Certificate asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 2 Inputs | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		14,790	17,328
Level 2 Inputs | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		17,729	14,929
Level 2 Inputs | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		13,631	11,225
Level 2 Inputs | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		11,355	9,720
Level 2 Inputs | Other securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		500	499
Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment		1,698,198	1,883,251
Loans held for investment by the Company		8,757	2,583
Loans held for sale by the Company, fair value		552,166	840,021
Securities available for sale at fair value		79,425	60,279
Servicing assets		71,848	64,006
Total assets		2,410,394	2,850,140
Notes, certificates and secured borrowings		1,703,226	1,905,875
Loan trailing fee liability		10,061	10,010
Total liabilities		1,713,287	1,915,885
Level 3 Inputs | Securitized asset-backed senior securities and subordinated residual certificates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		11,664	11,849
Level 3 Inputs | CLUB Certificate asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		67,761	48,430
Level 3 Inputs | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 3 Inputs | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 3 Inputs | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 3 Inputs | Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		0	0
Level 3 Inputs | Other securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value		$ 0	$ 0
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Quantitative Information about Significant Unobservable Inputs Used for Fair Value Measurements (Detail) - Level 3 Inputs	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Minimum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Total market servicing rates (percent per annum on outstanding principal balance)	0.66%	0.66%
Maximum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Total market servicing rates (percent per annum on outstanding principal balance)	0.66%	0.66%
Weighted- Average | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Total market servicing rates (percent per annum on outstanding principal balance)	0.66%	0.66%
Measurement Input, Discount Rate | Minimum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	5.90%	4.80%
Measurement Input, Discount Rate | Maximum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	14.80%	16.70%
Measurement Input, Discount Rate | Weighted- Average | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	8.70%	9.00%
Measurement Input, Discount Rate | Loan Trailing Fee Liability | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	5.90%	4.80%
Measurement Input, Discount Rate | Loan Trailing Fee Liability | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	14.80%	16.70%
Measurement Input, Discount Rate | Loan Trailing Fee Liability | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	9.40%	9.50%
Measurement Input, Discount Rate | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	6.10%	6.30%
Measurement Input, Discount Rate | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	12.20%	16.40%
Measurement Input, Discount Rate | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	8.80%	9.10%
Measurement Input, Loss Severity | Minimum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	2.90%	2.80%
Measurement Input, Loss Severity | Maximum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	38.30%	38.70%
Measurement Input, Loss Severity | Weighted- Average | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	12.20%	12.50%
Measurement Input, Loss Severity | Loan Trailing Fee Liability | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	2.90%	2.80%
Measurement Input, Loss Severity | Loan Trailing Fee Liability | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	38.20%	38.70%
Measurement Input, Loss Severity | Loan Trailing Fee Liability | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	14.20%	14.00%
Measurement Input, Loss Severity | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	2.80%	2.80%
Measurement Input, Loss Severity | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	36.40%	36.90%
Measurement Input, Loss Severity | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	12.60%	12.80%
Measurement Input, Prepayment Rate | Minimum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	27.10%	13.90%
Measurement Input, Prepayment Rate | Maximum | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	36.50%	42.90%
Measurement Input, Prepayment Rate | Weighted- Average | Servicing Assets
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	31.80%	31.90%
Measurement Input, Prepayment Rate | Loan Trailing Fee Liability | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	27.60%	16.50%
Measurement Input, Prepayment Rate | Loan Trailing Fee Liability | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	41.10%	43.10%
Measurement Input, Prepayment Rate | Loan Trailing Fee Liability | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	32.30%	32.20%
Measurement Input, Prepayment Rate | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	28.00%	27.80%
Measurement Input, Prepayment Rate | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	35.80%	40.30%
Measurement Input, Prepayment Rate | Loans Held for Investment, Loans Held for Sale, Notes, Certificates and Secured Borrowings | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	31.40%	31.20%
Loans Invested in by Company | Measurement Input, Discount Rate | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	5.60%	5.90%
Loans Invested in by Company | Measurement Input, Discount Rate | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	12.60%	16.70%
Loans Invested in by Company | Measurement Input, Discount Rate | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	9.70%	9.40%
Loans Invested in by Company | Measurement Input, Loss Severity | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	2.80%	2.60%
Loans Invested in by Company | Measurement Input, Loss Severity | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	37.00%	36.80%
Loans Invested in by Company | Measurement Input, Loss Severity | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	14.20%	13.20%
Loans Invested in by Company | Measurement Input, Prepayment Rate | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	27.20%	27.00%
Loans Invested in by Company | Measurement Input, Prepayment Rate | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	41.00%	45.50%
Loans Invested in by Company | Measurement Input, Prepayment Rate | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	32.70%	32.50%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Discount Rate | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	3.20%	3.20%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Discount Rate | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	19.60%	19.60%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Discount Rate | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	10.00%	8.80%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Loss Severity | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	8.30%	6.30%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Loss Severity | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	43.50%	43.90%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Loss Severity | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	20.00%	18.40%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Prepayment Rate | Minimum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	18.10%	21.00%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Prepayment Rate | Maximum
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	34.10%	33.00%
Asset-backed Securities Related to Structured Program Transactions | Measurement Input, Prepayment Rate | Weighted- Average
Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items]
Measurement input, percent	28.70%	30.10%

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities - Additional Information about Loans, Notes, Certificates and Secured Borrowings Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Loans Held for Investment
Loans
Outstanding Principal Balance, Beginning	$ 2,013,438	$ 3,141,391
Valuation Adjustment, Beginning	(130,187)	(209,066)
Fair Value, Beginning	1,883,251	2,932,325
Outstanding Principal Balance, Purchases	193,092	292,114
Valuation Adjustment, Purchases	(21)	9
Fair Value, Purchases	193,071	292,123
Outstanding Principal Balance, Transfers from loans to loans held for sale	(223)
Valuation Adjustment, Transfers from loans to loans held for sale	0
Fair Value, Transfers from loans to loans held for sale	(223)
Outstanding Principal Balance, Issuances	0	0
Valuation Adjustment, Issuances	0	0
Fair Value, Issuances	0	0
Outstanding Principal Balance, Sales	0	0
Valuation Adjustment, Sales	0	0
Fair Value, Sales	0	0
Outstanding Principal Balance, Principal payments and retirements	(340,444)	(500,949)
Valuation Adjustment, Principal payments	0	0
Fair Value, Principal payments and retirements	(340,444)	(500,949)
Outstanding Principal Balance, Charge-offs	(60,785)	(102,791)
Valuation Adjustment, Charge-offs	46,876	85,332
Fair Value, Charge-offs	(13,909)	(17,459)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Principal, Gain (Loss) Included in Earnings	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Valuation Adjustment, Gain (Loss) Included in Earnings	(23,548)	(70,627)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	(23,548)	(70,627)
Outstanding Principal Balance, Ending	1,805,078	2,829,765
Valuation Adjustment, Ending	(106,880)	(194,352)
Fair Value, Ending	1,698,198	2,635,413
Loans Held For Sale
Loans
Outstanding Principal Balance, Beginning	0	0
Valuation Adjustment, Beginning	0	0
Fair Value, Beginning	0	0
Outstanding Principal Balance, Purchases	563,036	1,133,277
Valuation Adjustment, Purchases	0	(1,772)
Fair Value, Purchases	563,036	1,131,505
Outstanding Principal Balance, Transfers from loans to loans held for sale	0
Valuation Adjustment, Transfers from loans to loans held for sale	0
Fair Value, Transfers from loans to loans held for sale	0
Outstanding Principal Balance, Issuances	0	0
Valuation Adjustment, Issuances	0	0
Fair Value, Issuances	0	0
Outstanding Principal Balance, Sales	(563,036)	(1,133,277)
Valuation Adjustment, Sales	(1,165)	835
Fair Value, Sales	(564,201)	(1,132,442)
Outstanding Principal Balance, Principal payments and retirements	0	0
Valuation Adjustment, Principal payments	0	0
Fair Value, Principal payments and retirements	0	0
Outstanding Principal Balance, Charge-offs	0	0
Valuation Adjustment, Charge-offs	0	0
Fair Value, Charge-offs	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Principal, Gain (Loss) Included in Earnings	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Valuation Adjustment, Gain (Loss) Included in Earnings	1,165	937
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	1,165	937
Outstanding Principal Balance, Ending	0	0
Valuation Adjustment, Ending	0	0
Fair Value, Ending	0	0
Loans Invested in by Company
Loans
Outstanding Principal Balance, Beginning	873,233	613,652
Valuation Adjustment, Beginning	(30,629)	(16,597)
Fair Value, Beginning	842,604	597,055
Outstanding Principal Balance, Purchases	843,929	793,171
Valuation Adjustment, Purchases	(379)	(440)
Fair Value, Purchases	843,550	792,731
Outstanding Principal Balance, Transfers from loans to loans held for sale	223	0
Valuation Adjustment, Transfers from loans to loans held for sale	0	0
Fair Value, Transfers from loans to loans held for sale	223	0
Outstanding Principal Balance, Sales	(1,045,880)	(742,732)
Valuation Adjustment, Sales	21,750	10,048
Fair Value, Sales	(1,024,130)	(732,684)
Outstanding Principal Balance, Principal payments and retirements	(68,353)	(62,612)
Valuation Adjustment, Principal payments	0	0
Fair Value, Principal payments and retirements	(68,353)	(62,612)
Outstanding Principal Balance, Charge-offs	(7,047)	(3,387)
Valuation Adjustment, Charge-offs	6,617	3,176
Fair Value, Charge-offs	(430)	(211)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Principal, Gain (Loss) Included in Earnings	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Valuation Adjustment, Gain (Loss) Included in Earnings	(32,541)	(28,477)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	(32,541)	(28,477)
Outstanding Principal Balance, Ending	596,105	598,092
Valuation Adjustment, Ending	(35,182)	(32,290)
Fair Value, Ending	560,923	565,802
Loans Invested in by Company | Loans Held for Investment
Loans
Outstanding Principal Balance, Beginning	3,518	371,379
Valuation Adjustment, Beginning	(935)	(10,149)
Fair Value, Beginning	2,583	361,230
Outstanding Principal Balance, Purchases	381	1,496
Valuation Adjustment, Purchases	(379)	(160)
Fair Value, Purchases	2	1,336
Outstanding Principal Balance, Transfers from loans to loans held for sale	8,533	106
Valuation Adjustment, Transfers from loans to loans held for sale	(1,471)	0
Fair Value, Transfers from loans to loans held for sale	7,062	106
Outstanding Principal Balance, Sales	0	0
Valuation Adjustment, Sales	0	0
Fair Value, Sales	0	0
Outstanding Principal Balance, Principal payments and retirements	(535)	(32,194)
Valuation Adjustment, Principal payments	0	0
Fair Value, Principal payments and retirements	(535)	(32,194)
Outstanding Principal Balance, Charge-offs	(664)	(1,172)
Valuation Adjustment, Charge-offs	437	973
Fair Value, Charge-offs	(227)	(199)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Principal, Gain (Loss) Included in Earnings	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Valuation Adjustment, Gain (Loss) Included in Earnings	(128)	(12,821)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	(128)	(12,821)
Outstanding Principal Balance, Ending	11,233	339,615
Valuation Adjustment, Ending	(2,476)	(22,157)
Fair Value, Ending	8,757	317,458
Loans Invested in by Company | Loans Held For Sale
Loans
Outstanding Principal Balance, Beginning	869,715	242,273
Valuation Adjustment, Beginning	(29,694)	(6,448)
Fair Value, Beginning	840,021	235,825
Outstanding Principal Balance, Purchases	843,548	791,675
Valuation Adjustment, Purchases	0	(280)
Fair Value, Purchases	843,548	791,395
Outstanding Principal Balance, Transfers from loans to loans held for sale	(8,310)	(106)
Valuation Adjustment, Transfers from loans to loans held for sale	1,471	0
Fair Value, Transfers from loans to loans held for sale	(6,839)	(106)
Outstanding Principal Balance, Sales	(1,045,880)	(742,732)
Valuation Adjustment, Sales	21,750	10,048
Fair Value, Sales	(1,024,130)	(732,684)
Outstanding Principal Balance, Principal payments and retirements	(67,818)	(30,418)
Valuation Adjustment, Principal payments	0	0
Fair Value, Principal payments and retirements	(67,818)	(30,418)
Outstanding Principal Balance, Charge-offs	(6,383)	(2,215)
Valuation Adjustment, Charge-offs	6,180	2,203
Fair Value, Charge-offs	(203)	(12)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Principal, Gain (Loss) Included in Earnings	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Valuation Adjustment, Gain (Loss) Included in Earnings	(32,413)	(15,656)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	(32,413)	(15,656)
Outstanding Principal Balance, Ending	584,872	258,477
Valuation Adjustment, Ending	(32,706)	(10,133)
Fair Value, Ending	552,166	248,344
Notes, Certificates and Secured Borrowings
Notes and Certificates
Outstanding Principal Balance, Beginning	2,033,258	3,161,080
Valuation Adjustment, Beginning	(127,383)	(206,312)
Fair value at beginning of period	1,905,875	2,954,768
Outstanding Principal Balance, Purchases	0	0
Valuation Adjustment, Purchases	0	0
Fair Value, Purchases	0	0
Outstanding Principal Balance, Beginning, Transfers	0
Valuation Adjustment, Transfers	0
Fair Value, Transfers	0
Outstanding Principal Balance, Issuances	193,092	292,461
Valuation Adjustment, Issuances	0	0
Fair Value, Issuances	193,092	292,461
Outstanding Principal Balance, Sales	0	0
Valuation Adjustment, Sales	0	0
Fair Value, Sales	0	0
Outstanding Principal Balance, Principal payments and retirements	(360,487)	(503,710)
Valuation Adjustment, Principal payments and retirements	14	8
Fair Value, Principal payments and retirements	(360,473)	(503,702)
Outstanding Principal Balance, Charge-offs	(60,785)	(102,791)
Valuation Adjustment, Charge-offs	46,876	85,332
Fair Value, Charge-offs	(13,909)	(17,459)
Outstanding Principal Balance, Change in fair value recorded in earnings	0	0
Valuation Adjustment, Change in fair value recorded in earnings	(21,359)	(70,651)
Fair Value, Change in fair value recorded in earnings	(21,359)	(70,651)
Outstanding Principal Balance, Ending	1,805,078	2,847,040
Valuation Adjustment, Ending	(101,852)	(191,623)
Fair value at end of period	$ 1,703,226	$ 2,655,417

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities - Additional Information about Servicing Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Servicing Assets, Changes in fair value due to:
Fair value at beginning of period	$ 64,006
Fair value at end of period	71,848
Fair Value, Measurements, Recurring
Servicing Assets, Changes in fair value due to:
Fair value at beginning of period	64,006	$ 33,676
Issuances	15,846	11,980
Changes in fair value, included in servicing fees	(11,039)	(5,606)
Other net changes included in deferred revenue	3,035	834
Fair value at end of period	71,848	40,884
Asset-backed subordinated residual certificates related to Company-sponsored securitizations and CLUB Certificate transactions
Servicing Liabilities, Changes in fair value due to:
Fair value at beginning of period	60,279	10,029
Additions	27,913	11,508
Redemptions	0	0
Cash received	(7,438)	(174)
Change in unrealized gain (loss)	(166)	88
Other-than-temporary impairment	(1,163)	(1,322)
Fair value at end of period	$ 79,425	$ 20,129

Fair Value of Assets and Liab_7

Fair Value of Assets and Liabilities - Sensitivity of Fair Value of Loans Invested in by the Company and Asset-backed Securities Related to Structured Program Transactions (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value	$ 197,509	$ 170,469
Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value	79,425	60,279
Asset-backed Securities Related to Structured Program Transactions, Senior Securities | Level 3 Inputs | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value	60,079	56,489
Discount rates, impact of 100 basis point increase	(542)	(526)
Discount rates, impact of 200 basis point increase	(1,067)	(1,032)
Expected credit loss on rates on underlying loans, 10% adverse change	0	0
Expected credit loss on rates on underlying loans, 20% adverse change	0	0
Expected prepayment rates, 10% adverse change	0	0
Expected prepayment rates, 20% adverse change	$ 0	$ 0
Asset-backed Securities Related to Structured Program Transactions, Senior Securities | Level 3 Inputs | Measurement Input, Expected Term | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected weighted-average life (in years)	1 year	1 year
Asset-backed Securities Related to Structured Program Transactions, Subordinated Residual Certificates | Level 3 Inputs | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value	$ 11,664	$ 11,849
Discount rates, impact of 100 basis point increase	(141)	(149)
Discount rates, impact of 200 basis point increase	(279)	(293)
Expected credit loss on rates on underlying loans, 10% adverse change	(1,679)	(1,573)
Expected credit loss on rates on underlying loans, 20% adverse change	(3,092)	(3,159)
Expected prepayment rates, 10% adverse change	(611)	(786)
Expected prepayment rates, 20% adverse change	$ (1,240)	$ (1,599)
Asset-backed Securities Related to Structured Program Transactions, Subordinated Residual Certificates | Level 3 Inputs | Measurement Input, Expected Term | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected weighted-average life (in years)	1 year 3 months	1 year 4 months
Asset-backed Securities Related to Structured Program Transactions, CLUB Transactions | Level 3 Inputs | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value	$ 67,761	$ 48,430
Discount rates, impact of 100 basis point increase	(648)	(472)
Discount rates, impact of 200 basis point increase	(1,280)	(932)
Expected credit loss on rates on underlying loans, 10% adverse change	(1,585)	(1,070)
Expected credit loss on rates on underlying loans, 20% adverse change	(3,128)	(2,112)
Expected prepayment rates, 10% adverse change	(414)	(291)
Expected prepayment rates, 20% adverse change	$ (793)	$ (562)
Asset-backed Securities Related to Structured Program Transactions, CLUB Transactions | Level 3 Inputs | Measurement Input, Expected Term | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected weighted-average life (in years)	1 year 2 months	1 year 2 months
Loans Invested in by Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 560,923	$ 842,604	$ 565,802	$ 597,055
Loans Invested in by Company | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and loans held for sale	560,923	842,604
Discount rates, impact of 100 basis point increase	(6,793)	(10,487)
Discount rates, impact of 200 basis point increase	(13,424)	(20,720)
Expected credit loss rates on underlying loans, 10% adverse change	(8,579)	(11,304)
Expected credit loss rates on underlying loans, 20% adverse change	(17,087)	(22,504)
Expected prepayment rates, 10% adverse change	(2,080)	(2,422)
Expected prepayment rates, 20% adverse change	$ (4,117)	$ (4,785)
Loans Invested in by Company | Measurement Input, Expected Term | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Expected weighted-average life (in years)	1 year 6 months	1 year 5 months
Loans Invested in by Company | Minimum | Level 3 Inputs | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, percent	5.60%	5.90%
Loans Invested in by Company | Minimum | Level 3 Inputs | Measurement Input, Loss Severity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, percent	2.80%	2.60%
Loans Invested in by Company | Minimum | Level 3 Inputs | Measurement Input, Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, percent	27.20%	27.00%
Loans Invested in by Company | Maximum | Level 3 Inputs | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, percent	12.60%	16.70%
Loans Invested in by Company | Maximum | Level 3 Inputs | Measurement Input, Loss Severity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, percent	37.00%	36.80%
Loans Invested in by Company | Maximum | Level 3 Inputs | Measurement Input, Prepayment Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, percent	41.00%	45.50%

Fair Value of Assets and Liab_8

Fair Value of Assets and Liabilities - Additional Information about Servicing Assets and Liabilities Measured Using Different Market Servicing Rates and Different Prepayment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in rate	0.10%	0.10%
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weighted-average market servicing rate assumptions, servicing assets	0.66%	0.66%
Assets, servicing rate increase by .1%	$ (11,800)	$ (10,878)
Assets, servicing rate decrease by .1%	$ 11,806	$ 10,886

Fair Value of Assets and Liab_9

Fair Value of Assets and Liabilities - Trailing Fee Liability (Details) - Loan Trailing Fee Liability - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value at beginning of period	$ 10,010	$ 8,432
Issuances	1,490	1,775
Cash payment of Loan Trailing Fee	(1,969)	(1,554)
Change in fair value, included in Origination and Servicing	530	171
Fair value at end of period	$ 10,061	$ 8,824

Fair Value of Assets and Lia_10

Fair Value of Assets and Liabilities - Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 2,528,478	$ 2,960,330
Total liabilities	1,713,287	1,915,885
Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	0	0
Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	118,084	110,190
Total liabilities	0	0
Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	2,410,394	2,850,140
Total liabilities	1,713,287	1,915,885
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	402,311	372,974
Restricted cash (1)	167,954	271,084
Servicer reserve receivable	406	669
Deposits	898	1,093
Total assets	571,569	645,820
Accrued expenses and other liabilities	19,838	18,483
Accounts payable	24,804	7,104
Payables to investors	72,175	149,052
Payable to securitization note holders	233,269	256,354
Credit facilities and securities sold under repurchase agreements	263,863	458,802
Total liabilities	613,949	889,795
Portion Not Recorded at Fair Value | Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Restricted cash (1)	0	0
Servicer reserve receivable	0	0
Deposits	0	0
Total assets	0	0
Accrued expenses and other liabilities	0	0
Accounts payable	0	0
Payables to investors	0	0
Payable to securitization note holders	0	0
Credit facilities and securities sold under repurchase agreements	0	0
Total liabilities	0	0
Portion Not Recorded at Fair Value | Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	402,311	372,974
Restricted cash (1)	167,954	271,084
Servicer reserve receivable	406	669
Deposits	898	1,093
Total assets	571,569	645,820
Accrued expenses and other liabilities	0	0
Accounts payable	24,804	7,104
Payables to investors	72,175	149,052
Payable to securitization note holders	233,269	256,354
Credit facilities and securities sold under repurchase agreements	46,468	57,012
Total liabilities	376,716	469,522
Portion Not Recorded at Fair Value | Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Restricted cash (1)	0	0
Servicer reserve receivable	0	0
Deposits	0	0
Total assets	0	0
Accrued expenses and other liabilities	19,838	18,483
Accounts payable	0	0
Payables to investors	0	0
Payable to securitization note holders	0	0
Credit facilities and securities sold under repurchase agreements	217,396	401,790
Total liabilities	237,234	420,273
Balance at Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	402,311	372,974
Restricted cash (1)	167,954	271,084
Servicer reserve receivable	406	669
Deposits	898	1,093
Total assets	571,569	645,820
Accrued expenses and other liabilities	19,838	18,483
Accounts payable	24,804	7,104
Payables to investors	72,175	149,052
Payable to securitization note holders	233,269	256,354
Credit facilities and securities sold under repurchase agreements	263,864	458,802
Total liabilities	$ 613,950	$ 889,795

Property, Equipment and Softw_3

Property, Equipment and Software, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Internally developed software	$ 149,882	$ 141,233
Leasehold improvements	32,178	31,109
Computer equipment	25,289	24,204
Purchased software	10,650	10,139
Furniture and fixtures	8,252	8,468
Construction in progress	7,173	4,106
Total property, equipment and software	233,424	219,259
Accumulated depreciation and amortization	(115,267)	(105,384)
Total property, equipment and software, net	118,157	113,875
Construction in Progress
Property, Plant and Equipment [Line Items]
Internally developed software	$ 15,900	$ 10,300

Property, Equipment and Softw_4

Property, Equipment and Software, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 15,855	$ 11,701
Property, Equipment and Software
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	13,300	10,300
Internally Developed Software
Property, Plant and Equipment [Line Items]
Impairment expense	$ 1,600	$ 300

Other Assets (Detail)

Other Assets (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Other Assets [Abstract]
Other assets	[1]	$ 235,264	$ 124,967
Operating lease assets
Other Assets [Abstract]
Other assets		107,455	0
Loan servicing assets, at fair value
Other Assets [Abstract]
Other assets		71,848	64,006
Prepaid expenses
Other Assets [Abstract]
Other assets		22,828	25,598
Accounts receivable
Other Assets [Abstract]
Other assets		18,273	19,322
Other investments
Other Assets [Abstract]
Other assets		8,507	8,503
Deferred financing costs
Other Assets [Abstract]
Other assets		2,391	2,117
Servicer reserve receivable
Other Assets [Abstract]
Other assets		406	669
Other
Other Assets [Abstract]
Other assets		3,556	4,752
Loan Servicing Rights
Other Assets [Abstract]
Principal balance of underlying loan servicing rights		$ 11,800,000	$ 10,900,000
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, net	$ 17,108		$ 18,048
Amortization expense	$ 900	$ 1,000

Accrued Expenses and Other Li_3

Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Operating lease, liabilities		$ 122,667	$ 110,100	$ 0
Accrued expenses		38,564		42,507
Transaction fee refund reserve		20,695		19,543
Accrued compensation		17,461		36,105
Contingent liabilities		12,700		12,750
Deferred revenue		12,386		9,420
Loan trailing fee liability, at fair value		10,061		10,010
Payable to issuing banks		1,229		1,182
Deferred rent		0		16,211
Other		3,178		4,390
Total accrued expenses and other liabilities	[1]	$ 238,941		$ 152,118
[1]	Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

Debt (Details)

Debt (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Dec. 13, 2018	Mar. 31, 2018	Dec. 17, 2015
Debt Instrument [Line Items]
Underlying assets pledged as collateral	$ 54,400,000	$ 64,100,000
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 120,000,000
Debt outstanding under credit facility	$ 95,000,000	95,000,000
Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Unused commitment fee (percent)	0.25%
Minimum | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Borrowings interest rate spread (percent)	1.75%
Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Unused commitment fee (percent)	0.375%
Maximum | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Borrowings interest rate spread (percent)	2.00%
Warehouse Credit Facility I | LendingClub Warehouse I LLC | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 250,000,000
Warehouse Credit Facility II | LendingClub Warehouse II LLC | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	200,000,000
Warehouse Credit Facility III | LendingClub Warehouse III LLC | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 34,200,000
Warehouse Credit Facilities | Minimum | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Borrowings interest rate spread (percent)	1.85%
Warehouse Credit Facilities | Maximum | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Borrowings interest rate spread (percent)	2.10%
Warehouse Credit Facilities I and II | Revolving Credit Facility
Debt Instrument [Line Items]
Debt outstanding under credit facility	$ 122,400,000	306,800,000
Restricted cash	$ 9,600,000	25,200,000
Warehouse Credit Facilities I and II | Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Unused commitment fee (percent)	0.50%
Warehouse Credit Facilities I and II | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Unused commitment fee (percent)	1.25%
Payables to Securitization Holders
Debt Instrument [Line Items]
Restricted cash	$ 14,700,000	9,300,000
Loans Held For Sale | Warehouse Credit Facilities I and II | Revolving Credit Facility
Debt Instrument [Line Items]
Loans pledged as collateral	193,000,000	467,400,000
Loans Held for Investment | Payables to Securitization Holders
Debt Instrument [Line Items]
Loans pledged as collateral	270,900,000	294,800,000
Credit Facilities and Securities Sold under Repurchase Agreements
Debt Instrument [Line Items]
Aggregate debt outstanding under repurchase transactions	46,500,000	57,000,000
Personal Whole Loan Securitization
Debt Instrument [Line Items]
Principal derecognized from loans securitized or sold	293,419,000		$ 300,000,000	$ 355,248,000
Personal Whole Loan Securitization | Payable to Securitization Note and Residual Certificate Holders
Debt Instrument [Line Items]
Debt Issuance Costs, Net			2,600,000
Notes and Residual Certificates held by Third-party Investors	$ 233,300,000	$ 256,400,000
Depositor | Personal Whole Loan Securitization
Debt Instrument [Line Items]
Transfer of Financial Assets Accounted for as Sales, Cash Proceeds Received for Assets Derecognized, Amount			$ 256,200,000

Secured Borrowings (Details)

Secured Borrowings (Details) $ in Millions	1 Months Ended
	Oct. 31, 2017fund	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Schedule of Capitalization, Long-term Debt [Line Items]
Number of legacy funds included in sale of Certificates | fund	6
Legacy funds transferred that did not meet the definition of participating interests | fund	2
Secured borrowings - carrying value		$ 61.6	$ 80.6
Fair value of credit support agreement		5	2.8
Secured Borrowings | Loans Held for Investment
Schedule of Capitalization, Long-term Debt [Line Items]
Loans pledged as collateral		$ 59.4	$ 81.1

Employee Incentive Plans - Sche

Employee Incentive Plans - Schedule of Stock-Based Compensation Expense Recorded for Stock Options, Warrants and Series F Convertible Preferred Stock (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 18,252	$ 17,801
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,571	1,860
Origination and servicing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	924	1,072
Engineering and product development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	5,231	5,279
Other general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	10,526	9,590
RSUs and PBRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	17,185	14,793
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	715	2,567
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 352	$ 441

Employee Incentive Plans - Addi

Employee Incentive Plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 18,252	$ 17,801
Internally Developed Software
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, capitalized amount	$ 1,900	2,200
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	26,113,561
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested1	$ 81,700
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$ 214,800
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 83 days
Stock-based compensation expense	$ 17,185	14,793
PBRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)	1,869,015
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$ 7,400
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 3 months 18 days
PBRSU performance period	1 year
Stock-based compensation expense	$ 900	$ 600
Minimum | PBRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share target range (percent)	0.00%
Maximum | PBRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share target range (percent)	200.00%
One-half of Grant Vesting in Two Years Following Completion of Performance Period [Member] | PBRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PBRSU vesting period	2 years

Employee Incentive Plans - RSU

Employee Incentive Plans - RSU and PBRSU Activity and Weighted Average Grant Date Fair Value table (Details)	3 Months Ended
	Mar. 31, 2019$ / sharesshares
PBRSUs
Number of Shares (shares)
Unvested, beginning (shares) | shares	1,273,218
Granted (shares) | shares	1,869,015
Vested (shares) | shares	(114,221)
Forfeited/expired (shares) | shares	(295,463)
Unvested, ending (shares) | shares	2,732,549
Weighted- Average Grant Date Fair Value ($ per share)
Unvested, beginning ($ per share) | $ / shares	$ 3.71
Granted ($ per share) | $ / shares	3.28
Vested ($ per share) | $ / shares	5.20
Forfeited/expired ($ per share) | $ / shares	3.46
Unvested, ending ($ per share) | $ / shares	$ 3.38
RSUs
Number of Shares (shares)
Unvested, beginning (shares) | shares	43,199,014
Granted (shares) | shares	26,113,561
Vested (shares) | shares	(3,645,135)
Forfeited/expired (shares) | shares	(3,544,662)
Unvested, ending (shares) | shares	62,122,778
Weighted- Average Grant Date Fair Value ($ per share)
Unvested, beginning ($ per share) | $ / shares	$ 4.05
Granted ($ per share) | $ / shares	3.13
Vested ($ per share) | $ / shares	4.56
Forfeited/expired ($ per share) | $ / shares	3.91
Unvested, ending ($ per share) | $ / shares	$ 3.64

Leases (Details)

Leases (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
Lease renewal term	15 years
Notice required for termination of lease	6 months
Security Deposit	$ 0.9
Letters of Credit Outstanding, Amount	$ 6.6
Minimum
Lessee, Lease, Description [Line Items]
Lease term	2 years
Sublease term	2 years
Maximum
Lessee, Lease, Description [Line Items]
Lease term	10 years
Sublease term	4 years

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating lease assets		$ 95,200
Operating lease liabilities	$ 122,667	$ 110,100	$ 0
Operating assets
Lessee, Lease, Description [Line Items]
Operating lease assets	107,455
Accrued expenses and other liabilities
Lessee, Lease, Description [Line Items]
Operating lease liabilities	$ 122,667

Leases - Net Lease Costs (Detai

Leases - Net Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Lessee, Lease, Description [Line Items]
Net lease costs	$ (4,185)	$ (4,239)
Variable lease costs	300	200
Other general and administrative
Lessee, Lease, Description [Line Items]
Operating lease costs	(5,192)	(4,316)
Other revenue
Lessee, Lease, Description [Line Items]
Sublease income	$ 1,007	$ 77

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Leased assets obtained in exchange for new operating lease liabilities	$ 15,277

Leases - Future Operating Lease

Leases - Future Operating Lease Payments and Sublease Revenue (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
2019	$ 12,750
2020	19,442
2021	19,900
2022	15,626
2023	11,624
Thereafter	86,277
Total lease payments	165,619
Discount effect	42,952
Present value of future minimum lease payments	122,667	$ 110,100	$ 0
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
2019	(3,411)
2020	(5,232)
2021	(5,389)
2022	(2,304)
2023	0
Thereafter	0
Total lease payments	(16,336)
Operating Lease Payments, Net [Abstract]
2019	9,339
2020	14,210
2021	14,511
2022	13,322
2023	11,624
Thereafter	86,277
Total lease payments	$ 149,283

Leases - Weighted-average Lease

Leases - Weighted-average Lease Term and Discount Rate (Details)	Mar. 31, 2019
Leases [Abstract]
Weighted-average remaining lease term (in years)	9 years 347 days
Weighted-average discount rate (percent)	5.00%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	1 Months Ended	3 Months Ended
	Aug. 31, 2016lawsuit	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	May 08, 2019USD ($)	Dec. 31, 2018USD ($)
Commitments and Contingencies [Line Items]
Loan purchase obligation period		2 days
Contingent loan purchase commitment limit		$ 43,000,000			$ 55,900,000
Commitment repurchases		2,000,000	$ 1,600,000
Deposit		9,000,000			9,000,000
Investor Loan Purchase Agreement, Purchases		5,300,000
Principal balance		30,600,000			30,400,000
Fair value		27,000,000			26,600,000
Pledged and restricted to support contingent obligation		700,000			800,000
Maximum exposure		6,000,000			6,000,000
Credit loss coverage reserve		0			0
Number of lawsuits | lawsuit	2
Contingent liabilities		12,700,000			$ 12,750,000
Class action and regulatory litigation expense		$ 0	$ 13,500,000
Subsequent Event
Commitments and Contingencies [Line Items]
Remaining limit of contingent loan purchase commitment				$ 0

Segment Reporting (Details)

Segment Reporting (Details)	3 Months Ended
	Mar. 31, 2019customersegment
Segment Reporting Information [Line Items]
Number of reportable segments | segment	1
Sales Revenue, Net
Segment Reporting Information [Line Items]
Number of individual customers and investors accounting for more than 10% of revenue | customer	0

Related Party Transactions - Su

Related Party Transactions - Summary of Deposits and Withdrawals Made by Related Parties (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Related Party Fund | Affiliated Entity
Related Party Transaction [Line Items]
Expense	$ 327
Related Party Fund | Investor fees - Funds and SMAs | Affiliated Entity
Related Party Transaction [Line Items]
Income	28
Related Party Fund
Related Party Transaction [Line Items]
Loans	77
Other Assets
Related Party Transaction [Line Items]
Equity method investment	$ 8,100
Ownership (percent)	23.00%