Prosper Marketplace 10-Q 19 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 10, 2014
Entity Information [Line Items]	'	'
Entity Registrant Name	'PROSPER MARKETPLACE INC	'
Entity Central Index Key	'0001416265	'
Current Fiscal Year End Date	'--12-31	'
Entity Well-known Seasoned Issuer	'No	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Smaller Reporting Company	'
Entity Common Stock, Shares Outstanding	'	14,430,808
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Prosper Funding LLC [Member]	'	'
Entity Information [Line Items]	'	'
Entity Registrant Name	'Prosper Funding LLC	'
Current Fiscal Year End Date	'--12-31	'
Entity Well-known Seasoned Issuer	'No	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Smaller Reporting Company	'
Entity Common Stock, Shares Outstanding	'	0

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$53,267	$18,339	[1]
Restricted cash	16,951	15,473	[1]
Accounts receivable	921	218	[1]
Loans held for sale at fair value	16,350	3,917	[1]
Borrower loans receivable at fair value	253,068	226,094	[1]
Property and equipment, net	6,293	3,396	[1]
Prepaid and other assets	5,106	968	[1]
Total Assets	351,956	268,405	[1]
Liabilities, Convertible Preferred Stock and Stockholders' Equity (Deficit)	'	'
Accounts payable and accrued liabilities	13,311	7,076	[1]
Class action settlement liability	7,830	9,739	[1]
Notes at fair value	252,911	226,794	[1]
Repurchase liability for unvested restricted stock awards	837	559	[1]
Repurchase and indemnification obligation	157	32	[1]
Total Liabilities	275,046	244,200	[1]
Commitments and contingencies (see Note 11)	'	'	[1]
Stockholders' Equity (Deficit)	'	'
Common stock ($0.01 par value; 47,928,883 shares authorized; 14,398,864 issued and outstanding as of September 30, 2014; and 41,487,465 shares authorized; 13,588,803 issued and outstanding as of December 31, 2013).	94	75	[1]
Additional paid-in capital	84,428	83,345	[1]
Less: treasury stock	-291	-291	[1]
Retained Earnings (Accumulated Deficit)	-118,764	-104,042	[1]
Total Stockholders' Equity	-34,533	-20,913	[1]
Total Liabilities, Convertible Preferred Stock and Stockholders' Equity	351,956	268,405	[1]
Series A '13 Preferred Stock [Member]	'	'
Liabilities, Convertible Preferred Stock and Stockholders' Equity (Deficit)	'	'
Convertible preferred stock - Series A '13, A-1 '13, B '13 and C '14 ($0.01 par value; 30,699,957 and 27,274,068 shares authorized, issued and outstanding as of September 30, 2014 and December 31, 2013, respectively). (Aggregate liquidation preference of $160,952 and $96,172 as of September 30, 2014 and December 31, 2013, respectively).	$111,443	$45,118	[1]
[1]	Please see note 14

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	11 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Stockholders' Equity (Deficit)	'	'
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized (in shares)	47,928,883	41,487,465
Common stock, shares issued (in shares)	14,421,876	13,588,803
Common stock, shares outstanding (in shares)	14,421,876	13,588,803
Reverse stock split, shares issued (in shares)	1	'
Reverse stock split, shares converted (in shares)	10	'
Series A '13 Preferred Stock [Member]	'	'
Liabilities, Convertible Preferred Stock and Stockholders' Equity (Deficit)	'	'
Convertible preferred stock, par value (in dollars per share)	$0.01	$0.01
Convertible preferred stock, shares authorized (in shares)	30,699,957	27,274,068
Convertible preferred stock, shares issued (in shares)	30,699,957	27,274,068
Convertible preferred stock, shares outstanding (in shares)	30,699,957	27,274,068
Convertible preferred stock, aggregate liquidation preference	$160,952	$96,172

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Revenues	'	'	'	'
Origination Fees, net	$22,233	$4,038	$46,849	$8,488
Servicing Fees, net	1,749	83	3,044	70
Other Revenues	1,147	378	2,090	810
Total Operating Revenues	25,129	4,499	51,983	9,368
Interest Income	'	'	'	'
Interest income on borrower loans	10,705	8,799	30,995	24,785
Interest expense on notes	-9,850	-8,435	-28,613	-23,770
Net interest income	855	364	2,382	1,015
Change in Fair Value of Borrower Loans, Loans Held for Sale and Notes, net	59	91	448	579
Total Net Revenues	26,043	4,954	54,813	10,962
Expenses	'	'	'	'
Cost of Services	1,408	450	3,275	1,609
Compensation and Benefits	6,260	3,259	16,327	9,101
Marketing and Advertising	10,717	4,675	25,743	10,126
Depreciation and Amortization	462	229	1,201	643	[1]
Professional Services	582	399	1,169	1,781
Facilities and Maintenance	1,441	530	2,604	1,323
Class Action Settlement	0	0	0	10,000
Loss on Impairment of Fixed Assets	0	0	215	62	[1]
Other	2,449	375	4,097	1,132
Total Expenses	23,319	9,917	54,631	35,777
Net Income (Loss)	2,724	-4,963	182	-24,815	[1]
Excess return to preferred shareholders on repurchase	-14,892	0	-14,892	0
Net Loss Available to Common Shareholders	($12,168)	($4,963)	($14,710)	($24,815)
Net loss per share - basic and diluted (in dollars per share)	($1.31)	($0.72)	($1.68)	($4.05)
Weighted - average shares - basic and diluted net loss per share (in shares)	9,280,334	6,927,648	8,740,785	6,119,987
[1]	Please see note 14

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical)	11 Months Ended
	Sep. 30, 2014
Reverse Stock Split [Abstract]	'
Reverse stock split, shares issued (in shares)	1
Reverse stock split, shares converted (in shares)	10

Condensed_Consolidated_Stateme2

Condensed Consolidated Statement of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) (USD $)	Convertible Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Total
In Thousands, except Share data
Balance at Dec. 31, 2012	'	'	'	'	'	'
Exercise of Nonvested Stock Options (in shares)	'	6,499,463	'	'	'	'
Balance at Dec. 31, 2013	$45,118	$75	($291)	$83,345	($104,042)	($20,913)	[1]
Balance (in shares) at Dec. 31, 2013	27,274,068	13,588,803	-182,264	'	'	'
Issuance Of Convertible Preferred Stock Series C'14	69,958	0	0	'	0	0
Issuance Of Convertible Preferred Stock Series C'14 Shares (in shares)	4,880,954	0	0	'	'	'
Exercise of Vested Stock Options	0	1	0	71	0	72
Exercise of Vested Stock Options (in shares)	0	56,323	0	'	'	'
Exercise of Nonvested Stock Options	0	0	0	0	'	0
Exercise of Nonvested Stock Options (in shares)	0	796,828	0	'	'	'
Repurchase of Restricted Stock	0	0	0	0	-12	-12
Repurchase of Restricted Stock (in shares)	0	-116,018	0	'	'	'
Restricted Stock Vested	0	17	'	147	'	164
Restricted Stock Vested (in shares)	0	0	'	'	'	'
Exercise of Warrants	'	1	'	88	'	89
Exercise of Warrants (in shares)	'	72,928	'	'	'	'
Stock-based Compensation Expense	0	0	0	777	0	777
Repurchase of Preferred Stock	-3,633	0	0	'	-14,892	-14,892
Repurchase of Preferred Stock (in shares)	-1,455,065	0	0	'	'	'
Net Income (Loss)	0	0	0	0	182	182
Balance at Sep. 30, 2014	$111,443	$94	($291)	$84,428	($118,764)	($34,533)
Balance (in shares) at Sep. 30, 2014	30,699,957	14,398,864	-182,264	'	'	'
[1]	Please see note 14

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013
Cash flows from operating activities:	'		'
Net Income (Loss)	$182		($24,815)	[1]
Adjustments to Reconcile Net Income (Loss) to Net Cash Used in Operating Activities:	'		'
Change in Fair Value of Borrower Loans	14,916		15,614	[1]
Change in fair value of Loans held for sale	11		3	[1]
Change in fair value of Notes	-15,375		-16,195	[1]
Depreciation and Amortization	1,201		643	[1]
Provision for Repurchase and Indemnification Obligation	125		20	[1]
Change in Servicing Rights	-803		0	[1]
Stock-based Compensation Expense	777		184	[1]
Loss on Impairment of Fixed Assets	215		62	[1]
Class Action Settlement Liability	-1,909		10,000	[1]
Changes in Operating Assets and Liabilities	'		'
Restricted Cash Except for those Related to Investing Activities	0		-2,000	[1]
Accounts Receivable	-703		-122	[1]
Prepaid and Other Assets	-2,543		-305	[1]
Loans Held for Sale at Fair Value	-12,464		35	[1]
Accounts payable and accrued liabilities	4,281		-421	[1]
Net cash used in Operating Activities	12,069		-17,297	[1]
Cash flows from investing activities:	'		'
Origination of Borrower Loans Held at Fair Value	-823,841		-199,135	[1]
Repayment of Borrower Loans Held at Fair Value	88,944		65,504	[1]
Proceeds from sale of borrower loans held at fair value	693,007		80,786	[1]
Purchases of Property and Equipment	-3,151		-2,334	[1]
Maturities of Short Term Investments	0		1,000	[1]
Changes in Restricted Cash Related to Investing Activities	-1,478		-334	[1]
Net Cash Used in Investing Activities	-46,519		-54,513	[1]
Cash flows from financing activities:	'		'
Proceeds from issuance of Notes Held at Fair Value	130,828		118,349	[1]
Payment of Notes Held at Fair Value	-89,336		-65,167	[1]
Proceeds from Issuance of Convertible Preferred Stock, Net	69,958		44,775	[1]
Proceeds from Early Exercise of Stock Options	454		650	[1]
Proceeds from Exercise of Vested Stock Options	72		207	[1]
Repurchase of Restricted Stock	-24		-4	[1]
Repurchase of Preferred Stock	-18,525		0	[1]
Proceeds from Exercise of Warrants	89		0	[1]
Net Cash Provided by Financing Activities	93,516		98,810	[1]
Net (decrease) increase in cash and cash equivalents	34,928		27,000	[1]
Cash and cash equivalents at beginning of the period	18,339	[1]	2,300	[1]
Cash and cash equivalents at end of the period	53,267		29,300	[1]
Cash paid for interest	28,976		23,725	[1]
Non-cash investing activity-accrual for property and equipment net	1,162		0	[1]
Non-cash interest on settlement liability	$0		$0	[1]
[1]	Please see note 14

Organization_and_Business

Organization and Business	9 Months Ended
	Sep. 30, 2014
Organization and Business [Abstract]	'
Organization and Business	'
	1	Organization and Business
	Prosper Marketplace, Inc. (“PMI” or “the Company”) was incorporated in the state of Delaware on March 22, 2005. PMI developed a peer-to-peer online credit platform (the “platform”) and prior to February 1, 2013, owned the proprietary technology that made operation of the platform possible. Prior to February 1, 2013, PMI also operated the platform, facilitated the origination of unsecured, consumer loans by WebBank, an FDIC-insured, Utah-chartered industrial bank, through the platform and issued and sold borrower payment dependent notes corresponding to those loans.
	The platform is designed to allow investor members to invest money in borrower members in an open transparent marketplace, with the aim of allowing both investor members and borrower members to profit financially as well as socially. The Company believes peer-to-peer lending represents a new model of consumer lending, where individuals and institutions can earn the interest spread of a traditional consumer lender but must also assume the credit risk of a traditional consumer lender.
	A borrower member who wishes to obtain a loan through the platform must post a loan listing, or listing, on the platform. Listings are allocated to one of two investor member funding channels: (i) the first channel allows investor members to commit to purchase Notes, the payments of which are dependent on the payments made on the corresponding Borrower Loan (the “Note Channel”); and (ii) the second channel allows investor members to commit to purchase 100% of a Borrower Loan directly from the Company (the “Whole Loan Channel”).
	As of September 30, 2014, the platform is open to investors in 31 states and the District of Columbia. Additionally, as of September 30, 2014 the platform is open to borrowers in 47 states and the District of Columbia.  Currently our platform is not offered internationally.
	On February 1, 2013, PMI transferred ownership of the platform, including all of the rights related to the operation of the platform, as well as all then-outstanding Borrower Loans, to its wholly-owned subsidiary, Prosper Funding LLC (“Prosper Funding” and, collectively with PMI, the “Company” or the “Registrants”). At that same time, Prosper Funding assumed all of PMI’s obligations with respect to all then-outstanding Notes.  Since February 1, 2013, all Notes issued and sold through the platform are issued and sold by Prosper Funding.  Pursuant to a Loan Account Program Agreement between PMI and WebBank, PMI manages the operation of the platform, as agent of WebBank, in connection with the submission of loan applications by potential borrowers, the making of related loans by WebBank and the funding of such loans by WebBank. On February 1, 2013, Prosper Funding entered into an Administration Agreement with PMI in its capacity as licensee, corporate administrator, loan platform administrator and loan and note servicer, pursuant to which PMI provides certain back office support, loan platform administration and loan and note servicing to Prosper Funding.
	Prosper Funding formed Prosper Asset Holdings LLC (“PAH”) in November 2013 as a limited liability company with the sole equity member being Prosper Funding. PAH was formed to purchase Borrower Loans from Prosper Funding and sell the Borrower Loans to third parties.
	As reflected in the accompanying condensed consolidated financial statements, the Company generated income in the current period, however before the current quarter the Company had incurred net losses and negative cash flows from operations since inception.  There is an accumulated deficit of $118.8 million as of September 30, 2014.  At September 30, 2014, the Company had $53.3 million in cash and cash equivalents. Since its inception, the Company has financed its operations primarily through equity financing from various sources.  The Company believes that its current cash position, including the additional $51.4 million ($69.9 million raised in May 2014 net of $18.5 million spent in July 2014 on preferred share repurchases) raised through a new equity financing, is sufficient to meet its liquidity needs over the next year.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Summary of Significant Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	2	Summary of Significant Accounting Policies
	Basis of Presentation
	The unaudited interim condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“US GAAP”) and disclosure requirements for interim financial information and the requirements of Rule 8-03 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for complete financial statements. The unaudited interim condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2013. The balance sheet at December 31, 2013 has been derived from the audited financial statements at that date. Management believes these unaudited interim condensed consolidated financial statements reflect all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period.
	The accompanying interim condensed consolidated financial statements include the accounts of PMI and its wholly-owned subsidiary, Prosper Funding. All intercompany balances have been eliminated in consolidation.
	Use of Estimates
	The preparation of the interim condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures, including contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. These estimates, judgments and assumptions include but are not limited to the following: valuation of Borrower Loans and associated Notes, Borrower Loans held for sale, valuation of servicing rights, valuation allowance on deferred tax assets, repurchase and indemnification obligation, stock-based compensation expense, and contingent liabilities. Actual results could differ from those estimates.
	Certain Risks and Concentrations
	In the normal course of its business, the Company encounters two significant types of risk: credit and regulatory. Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, and restricted cash. The Company places cash, cash equivalents, and restricted cash with high-quality financial institutions and is exposed to credit risk in the event of default by these institutions to the extent the amount recorded on the balance sheet exceeds federally insured amounts.  The Company performs periodic evaluations of the relative credit standing of these financial institutions and has not sustained any credit losses from instruments held at these financial institutions.
	To the extent that Borrower Loan payments are not made, servicing income will be reduced.  A group of Notes corresponding to a particular Borrower Loan is wholly dependent on the repayment of such Borrower Loan. As a result, the Company does not bear the risk on such Borrower Loan.
	The Company is subject to various regulatory requirements. The failure to appropriately identify and address these regulatory requirements could result in certain discretionary actions by regulators that could have a material effect on the Company's consolidated financial position and results of operations (See Note 11—Commitments and Contingencies—Securities Law Compliance).
	Reclassifications
	During the nine months ended September 30, 2014, the Company changed the presentation of its revenues in the statement of operations.   A new line called “Servicing Fees” was created and the servicing fees related to whole loans that were previously included in interest income were reclassified to this new line.   Furthermore, the “Rebates and Promotions” line was removed, with the amounts in that line reclassified to the “Servicing Fees” or “Origination Fees” lines based on the underlying transactions.  Also, the “Change in Fair Value of Borrower Loans, Loans Held for Sale and Notes, Net” was moved into the total revenues subtotal.     Lastly, the subtotals were realigned to reflect the new presentation.   Management believes these changes make the income statement more useful for the readers of the financial statements and comparable with the Company’s competitors.
	Cash and Cash Equivalents
	All highly liquid investments with stated maturities of three months or less from date of purchase are classified as cash equivalents. Cash equivalents are recorded at cost plus accrued interest, which approximates fair value. Cash and cash equivalents include various unrestricted deposits with highly rated financial institutions in checking, money market and short-term certificate of deposit accounts.
	Restricted Cash
	Restricted cash consists primarily of cash deposits held as collateral as required for long term leases, loan funding and servicing activities.
	Borrower Loans and Notes
	Through the Note Channel, the Company issues Notes and purchases Borrower Loans from WebBank, and holds the Borrower Loans until maturity.  The obligation to repay a series of Notes funded through the Note Channel is conditioned upon the repayment of the associated Borrower Loan.  Borrower Loans and Notes funded through the Note Channel are carried on the Company’s condensed consolidated balance sheets as assets and liabilities, respectively.  The Company has adopted the provisions of ASC Topic 825, Financial Instruments.  ASC Topic 825 permits companies to choose to measure certain financial instruments and certain other items at fair value on an instrument-by-instrument basis with unrealized gains and losses on items for which the fair value option has been elected reported in earnings.  Management believes that the fair value option is more meaningful for the reader of the financial statements and it allows both the Borrower Loans and Notes to be valued using the same methodology.  The fair value election, with respect to an item, may not be revoked once an election is made.  A specific allowance account is not recorded relating to the Borrower Loans in which the Company has elected the fair value option, but rather the Company estimates the fair value of such Borrower Loans and Notes using discounted cash flow methodologies adjusted for the expected payment, loss and recovery rates.
	Servicing Asset/Liability
	The Company records servicing assets and liabilities at their estimated fair values when the Company sells Borrower Loans to unrelated third-party buyers. The gain or loss on a loan sale is recorded in “Other Revenue” while the fair value of the servicing rights, which is based on the degree to which the contractual loan servicing fee is above or below an estimated market loan servicing fee is recorded in servicing assets or liabilities. Servicing assets and liabilities are recorded in “Prepaid and Other Assets” and “Accrued Expenses and Other Liabilities,” respectively, on the condensed consolidated balance sheets. The initial fair value of servicing assets or liabilities are amortized in proportion to and over the period of estimated servicing income or loss and are reported in “Servicing Fees” on the condensed consolidated statement of operations.
	The Company uses a discounted cash flow model to estimate the fair value of the loan servicing assets or liabilities which considers the contractual projected servicing fee revenue that the Company earns on the loans, estimated market servicing fees to service such loans, prepayment rates, default rates and the current principal balances of the loans.
	The Company periodically assesses servicing assets accounted for using the amortization method for impairment. Impairment occurs when the current fair value of the servicing assets falls below the asset’s carrying value (carrying value is the amortized cost reduced by any related valuation allowance). If servicing assets are impaired, the impairment is recognized in current-period earnings and the carrying value of the assets is adjusted through a valuation allowance. If the value of impaired servicing assets subsequently increases, the Company recognizes the increase in value in current-period earnings and adjusts the carrying value of the servicing assets through a reduction in the valuation allowance to adjust the carrying value only to the extent of the valuation allowance.
	Loans Held for Sale
	Loans held for sale are primarily comprised of Borrower Loans held for short durations and are recorded at fair value. The fair value is estimated using discounted cash flow methodologies based upon a set of valuation assumptions similar to those of other Borrower Loans, which are set forth in Note 2— Fair Value Measurement.
	Fair Value Measurement
	The Company adopted ASC Topic 820, Fair Value Measurements and Disclosures, on January 1, 2008, which provides a framework for measuring the fair value of assets and liabilities. ASC Topic 820 also provides guidance regarding a fair value hierarchy, which prioritizes information used to measure fair value and the effect of fair value measurements on earnings and provides for enhanced disclosures determined by the level within the hierarchy of information used in the valuation. ASC Topic 820 applies whenever other standards require (or permit) assets or liabilities to be measured at fair value but does not expand the use of fair value in any new circumstances.
	ASC Topic 820 defines fair value in terms of the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.
	The price used to measure the fair value is not adjusted for transaction costs. Under ASC Topic 820, the fair value measurement also assumes that the transaction to sell an asset occurs in the principal market for the asset or, in the absence of a principal market, the most advantageous market for the asset. The principal market is the market in which the reporting entity would sell or transfer the asset with the greatest volume and level of activity for the asset. In determining the principal market for an asset or liability under ASC Topic 820, it is assumed that the reporting entity has access to the market as of the measurement date. If no market for the asset exists or if the reporting entity does not have access to the principal market, the reporting entity should use a hypothetical market.
	Under ASC Topic 820, assets and liabilities carried at fair value on the balance sheets are classified among three levels based on the observability of the inputs used to determine fair value:
	Level 1 — The valuation is based on quoted prices in active markets for identical instruments.
	Level 2 — The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
	Level 3 — The valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques, which incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument or valuations that require significant management judgment or estimation.
	Fair value of financial instruments are determined based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of quoted prices and observable inputs and to minimize the use of unobservable inputs when measuring fair value. Various valuation techniques are utilized, depending on the nature of the financial instrument, including the use of market prices for identical or similar instruments, or discounted cash flow models. When possible, active and observable market data for identical or similar financial instruments are utilized. Alternatively, fair value is determined using assumptions that management believes a market participant would use in pricing the asset or liability.
	Financial instruments consist principally of Cash and cash equivalents, Restricted cash, Borrower loans receivable, Loans held for sale, Accounts payable and accrued liabilities, and Notes.  The estimated fair values of Cash and cash equivalents, Restricted cash, Accounts payable and accrued liabilities approximate their carrying values because of their short term nature.
	The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
	30-Sep-14		Level 1		Level 2		Level 3		Fair
									Value
	Assets
	Borrower loans receivable		$	-	$	-	$	253,068	$	253,068
	Restricted cash			15,577		1,374		-		16,951
	Loans held for sale			-		-		16,350		16,350
	Total assets		$	15,577	$	1,374	$	269,418	$	286,369
	Liabilities
	Notes		$	-	$	-	$	252,911	$	252,911
	31-Dec-13		Level 1		Level 2		Level 3		Fair
									Value
	Assets
	Borrower loans receivable		$	-	$	-	$	226,094	$	226,094
	Restricted cash			14,032		1,441		-		15,473
	Loans held for sale			-		-		3,917		3,917
	Total assets		$	14,032	$	1,441	$	230,011	$	245,484
	Liabilities
	Notes		$	-	$	-	$	226,794	$	226,794
	Property and Equipment
	Property and equipment consists of computer equipment, office furniture and equipment, and software purchased or developed for internal use. Property and equipment are stated at cost, less accumulated depreciation and amortization, and are computed using the straight-line method based upon estimated useful lives of the assets, which range from three to seven years, commencing once the asset is placed in service. Expenditures are capitalized for replacements and betterments and recognized as expense for maintenance and repairs as incurred.
	Internal Use Software and Website Development
	Internal use software costs and website development costs are accounted for, in accordance with ASC Topic 350-40, Internal Use Software, and ASC Topic 350-50, Website Development Costs. In accordance with ASC Topic 350-40 and 350-50, the costs to develop software for the website and other internal uses are capitalized when management has authorized and committed project funding, preliminary development efforts are successfully completed, and it is probable that the project will be completed and the software will be used as intended. Capitalized software development costs primarily include software licenses acquired, fees paid to outside consultants, and salaries and payroll related costs for employees directly involved in the development efforts.
	Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed. Costs incurred for upgrades and enhancements that are considered to be probable to result in additional functionality are capitalized. Capitalized costs are included in property and equipment and amortized to expense using the straight-line method over their expected lives. Software assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable.  Recoverability of software assets to be held and used is measured by a comparison of the carrying amount of the asset to the future net undiscounted cash flows expected to be generated by the asset.  If such software assets are considered to be impaired, the impairment to be recognized is the excess of the carrying amount over the fair value of the software asset.
	Repurchase Liability for Unvested Restricted Stock Awards
	Under the terms of the Company’s stock option plan certain options issued to employees can be exercised before they have vested by the employee.  When this occurs the Company records a liability for the unvested portion of the exercise.  If the employee’s employment is terminated before all of the shares become vested the Company may repurchase the unvested shares at the original exercise price. The liability is released into Equity as the shares become vested.   The related shares are considered to be restricted shares and are excluded from the basic earnings per share calculation.
	Repurchase and Indemnification Obligation
	Under the terms of the Notes, the Lender Registration Agreements between the Company and investor members who participate in the Note Channel, and the loan purchase agreements between the Company and investor members that participate in the Whole Loan Channel, the Company may, in certain circumstances, become obligated to repurchase a Note or Borrower Loan from an investor member or indemnify an investor member against loss on a Note. Generally, these circumstances include the occurrence of verifiable identity theft, the failure to properly follow loan listing or bidding protocols, or a violation of the applicable federal, state, or local lending laws. The fair value of the indemnification and repurchase obligation is estimated based on historical experience. The Company recognizes a liability for the repurchase and indemnification obligation when the Notes or Borrower Loans are issued. Indemnified or repurchased Notes and repurchased Borrower Loans associated with violations of federal, state, or local lending laws or verifiable identity theft are written off at the time of repurchase or at the time an indemnification payment is made.
	Revenue Recognition
Revenue primarily results from fees earned. Fees include loan origination fees paid by borrowers and servicing fees paid by investors. We also have other smaller sources of revenue reported as other revenue, this includes referral fees and gains on whole loan sales.
Origination Fees
The Company earns an origination fee upon the successful closing of all Borrower Loans issued through the platform. WebBank charges the origination fee and the Company receives payments from WebBank equal to the origination fee as compensation for its loan origination activities on behalf of WebBank. The borrower receives an amount equal to the loan amount net of the loan origination fee. The loan origination fee is determined by the term and credit grade of the loan, and ranges from 1.00% to 5.00% of the original principal amount. Since the Company accounts for Borrower Loans and Loans held for sale at fair value, origination fees are not deferred but are recognized at origination of the Borrower Loan, and direct costs to originate Borrower Loans are recorded as expenses as incurred.
Service Fees
Investors in whole loans typically pay the Company a servicing fee which is currently generally set at 1% per annum of the outstanding principal balance of the corresponding loan prior to applying the current payment. The servicing fee compensates the Company for the costs we incur in servicing the related loan, including managing payments from borrowers, payments to investors and maintaining investors’ account portfolios. Prosper records servicing fees paid by note holders and borrower loan holders as a component of operating revenue when received. The amortization of servicing rights is also included in this line.
Interest Income on Borrower Loans Receivable and Interest Expense on Notes
The Company recognizes interest income on Borrower Loans funded through the Note Channel and interest expense on the corresponding Notes using the accrual method based on the stated interest rate to the extent the Company believes it to be collectable.
Cost of Services
Cost of Services includes costs that are directly related to the origination and servicing of Borrower Loans such as verification fees and fees from WebBank for processing loan payments.
Marketing and Advertising Expense
Under the provisions of ASC Topic 720, Other Expenses, the costs of advertising are expensed as incurred. Marketing and advertising costs were $25.7 million and $10.1 million for the nine months ended September 30, 2014 and 2013, respectively.
Stock-Based Compensation
Stock-based compensation for employees is accounted for using fair-value-based accounting in accordance with ASC Topic 718, Stock Compensation.  ASC Topic 718 requires companies to estimate the fair value of stock-based awards on the date of grant using an option-pricing model. The stock-based compensation related to awards that are expected to vest is amortized using the straight line method over the vesting term of the stock-based award, which is generally four years. Expected forfeitures of unvested options are estimated at the time of grant such that expense is recorded only for those stock-based awards that are expected to vest.
Options have been granted to purchase shares of common stock to nonemployees in exchange for services performed, which the Company accounts for in accordance with the provisions of ASC Topic 505-50, Equity-Based Payments to Non-Employees. Because ASC Topic 505 requires that nonemployee equity awards be recorded at their fair value, the Black-Scholes model is used to estimate the fair value of options granted to nonemployees at each vesting date until performance is complete to determine the appropriate charge for the services provided.
Net Loss Per Share
Net loss per share is computed in accordance with ASC Topic 260, Earnings Per Share. Under ASC Topic 260, basic net loss per share is computed by dividing net loss per share available to common shareholders by the weighted average number of common shares outstanding for the period and excludes the effects of any potentially dilutive securities. Diluted earnings per share, if presented, would include the dilution that would occur upon the exercise or conversion of all potentially dilutive securities into common stock using the “treasury stock” and/or “if converted” methods as applicable. At September 30, 2014, there were outstanding convertible preferred stock, warrants, restricted stock and options convertible into 30,699,957, 220,882, 4,768,109 and 4,540,101 common shares, respectively, which may dilute future earnings per share. At September 30, 2013, there were outstanding convertible preferred stock, warrants, restricted stock and options convertible into 22,156,922, 218,797, 6,461,797 and 979,483 common shares, respectively, which may dilute future earnings per share. The weighted average number of shares and the loss per share reflect a 10-for-1 reverse stock split effected by the Company on October 29, 2013. By reporting a net loss available to common stockholders for the three and nine months ended September 30, 2014 and 2013, potentially dilutive securities are excluded from the computation of net loss per share, as their effect would be antidilutive.
Income Taxes
The asset and liability method is used to account for income taxes as codified in ASC Topic 740, Income Taxes. Under this method, deferred income tax assets and liabilities are based on the differences between the financial statements and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized.
Under ASC Topic 740, the Company’s policy to include interest and penalties related to gross unrecognized tax benefits within its provision for income taxes did not change.  U.S. Federal, California and other state income tax returns are filed.  The Company is currently not undergoing any income tax examinations. Due to the net operating loss, generally all tax years remain open.
Comprehensive Income
There is no comprehensive income (loss) other than the net income (loss) disclosed in the condensed consolidated statements of operations.
Recent Accounting Pronouncements
In May 2014, as part of its ongoing efforts to assist in the convergence of U.S. GAAP and International Financial Reporting Standards (“IFRS”), FASB issued ASU 2014-09, “Revenue from Contracts with Customers.” The new guidance sets forth a new five-step revenue recognition model which replaces the prior revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance that have historically existed in U.S. GAAP. The underlying principle of the new standard is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in the prior accounting guidance. The standard will be effective for the Company in the first quarter of fiscal 2017. Early adoption is not permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.
In August 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-15, "Presentation of Financial Statements - Going Concern (Subtopic 205-40); Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern," which requires management of a company to evaluate whether there is substantial doubt about the company's ability to continue as a going concern. This ASU is effective for the annual reporting period ending after December 15, 2016, and for interim and annual reporting periods thereafter, with early adoption permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.

Borrower_Loans_and_Notes_Held_

Borrower Loans and Notes Held at Fair Value	9 Months Ended
	Sep. 30, 2014
Borrower Loans and Notes Held at Fair Value [Abstract]	'
Borrower Loans and Notes Held at Fair Value	'
	3	Borrower Loans and Notes Held at Fair Value
	As observable market prices are not available for the Borrower Loans and Notes funded through the Note Channel, or for similar assets and liabilities, the Company believes such Borrower Loans and Notes should be considered Level 3 financial instruments under ASC Topic 820.  In a hypothetical transaction as of the measurement date, the Company believes that differences in the principal marketplace in which such Borrower Loans are originated and the principal marketplace in which it might offer such Borrower Loans for sale may result in differences between the originated amount of the Borrower Loans and their fair value as of the transaction date.  For Borrower Loans funded through the Note Channel, the fair value is estimated using discounted cash flow methodologies based upon valuation assumptions including prepayment speeds, roll rates, recovery rates and discount rates based on the perceived credit risk within each credit grade.
	The obligation to pay principal and interest on any series of Notes is equal to the loan payments, if any, that are received on the corresponding Borrower Loan, net of its servicing fee.  The fair value election for Notes and Borrower Loans funded through the Note Channel allows both the assets and the related liabilities to receive similar accounting treatment for expected losses which is consistent with the subsequent cash flows to investor members that are dependent upon borrower payments.  As such, the fair value of the Notes is approximately equal to the fair value of the Borrower Loans funded through the Note Channel, adjusted for the servicing fee and the timing of borrower payments subsequently disbursed to Note holders.  Any unrealized gains or losses on such Borrower Loans and Notes for which the fair value option has been elected is recorded as a separate line item in the statement of operations.  The effective interest rate associated with a series of Notes is less than the interest rate earned on the corresponding Borrower Loan due to the servicing fee.  See further discussion in this note for a roll-forward and further discussion of the significant assumptions used to value Borrower Loans and Notes funded through the Note Channel.
	The fair value of the Borrower Loans and Notes funded through the Note Channel is estimated using discounted cash flow methodologies based upon a set of valuation assumptions. The primary cash flow assumptions used to value such Borrower Loans and Notes include default rates derived from historical performance and discount rates applied to each credit grade based on the perceived credit risk of each credit grade. The obligation to pay principal and interest on any series of Notes is equal to the loan payments, if any, received on the corresponding Borrower Loan, net of the servicing fee.  As such, the fair value of the Notes is approximately equal to the fair value of the Borrower Loans funded through the Note Channel, adjusted for the servicing fee and the timing of borrower payments subsequently disbursed to the Note holders.  The effective interest rate associated with a series of Notes will be less than the interest rate earned on the corresponding Borrower Loan due to the servicing fee.
	At September 30, 2014 and December 31, 2013, borrower loans, notes and loans held for sale (in thousands) were:
			Borrower Loans						Notes						Loans Held for Sale
			30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13
	Aggregate principal balance outstanding		$	256,026		$	225,953		$	(258,947	)	$	(229,271	)	$	16,360		$	3,915
	Fair value adjustments			(2,958	)		141			6,036			2,477			(10	)		2
	Fair value		$	253,068		$	226,094		$	(252,911	)	$	(226,794	)	$	16,350		$	3,917
	Key economic assumptions and the sensitivity of the current fair value to immediate adverse changes in those assumptions at September 30, 2014 for Borrower Loans and Notes funded through the Note Channel are presented in the following table (in thousands):
			Borrower Loans			Notes
	Discount rate assumption:			9.36	%*		9.36	%*
	Resulting fair value from:
	100 basis point increase		$	247,738		$	244,736
	200 basis point increase			244,715			241,743
	Resulting fair value from:
	100 basis point decrease		$	253,975		$	250,912
	200 basis point decrease			257,188			254,085
	Default rate assumption:			7.4	%*		7.4	%*
	Resulting fair value from:
	10% higher default rates		$	247,275		$	244,275
	20% higher default rates			244,418			241,452
	Resulting fair value from:
	10% lower default rates		$	253,729		$	250,663
	20% lower default rates			256,584			253,493
	* Represents weighted average assumptions considering all credit grades.
	The changes in Level 3 assets measured at fair value on a recurring basis are as follows (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
			Borrower			Notes			Loans Held			Total
			Loans						for
									Sale
	Balance at January 1, 2013		$	166,900			(167,478	)		175			(403	)
	Originations			118,349			(118,349	)		71			71
	Principal repayments			(65,504	)		65,167			(106	)		(443	)
	Borrower loans sold to third parties			(80,786	)		-			-			(80,786	)
	Change in fair value on borrower loans and notes			(15,614	)		16,195			-			581
	Change in fair value of loans held for sale			-			-			(3	)		(3	)
	Balance at September 30, 2013		$	204,131			(204,465	)		137			(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
			Borrower			Notes			Loans Held			Total
			Loans						for
									Sale
	Balance at January 1, 2014		$	226,094		$	(226,794	)	$	3,917		$	3,217
	Originations			823,841			(130,828	)		229,679			922,692
	Principal repayments			(88,944	)		89,336			(899	)		(507	)
	Borrower loans sold to third parties			(693,007	)		-			(216,336	)		(909,343	)
	Change in fair value on borrower loans and notes			(14,916	)		15,375			-			459
	Change in fair value of loans held for sale									(11	)		(11	)
	Balance at September 30, 2014		$	253,068		$	(252,911	)	$	16,350		$	16,507
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
			Borrower			Notes			Loans Held			Total
			Loans						for
									Sale
	Balance July 1, 2013		$	187,124		$	(187,489	)	$	153		$	(212	)
	Originations			43,475			(43,475	)		25			25
	Principal repayments			(22,778	)		22,718			(41	)		(101	)
	Borrower loans sold to third parties			(50,623	)		-			-			(50,623	)
	Change in fair value on borrower loans and notes			(3,690	)		3,781			-			91
	Balance at September 30, 2013		$	204,131		$	(204,465	)	$	137		$	(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
			Borrower			Notes			Loans Held			Total
			Loans						for
			Sale
Balance July 1, 2014		$	246,203		$	(246,511	)	$	9,543		$	9,235
Originations			372,027			(44,115	)		117,752			445,664
Principal repayments			(31,226	)		31,620			(586	)		(192	)
Borrower loans sold to third parties			(327,909	)		-			(110,350	)		(438,259	)
Change in fair value on borrower loans and notes			(6,027	)		6,095			-			68
Change in fair value of loans held for sale									(9	)		(9	)
Balance at September 30, 2014		$	253,068		$	(252,911	)	$	16,350		$	16,507
The changes in fair value would directly impact the change in fair value on Borrower Loans, Loans held for sale and Notes in the condensed consolidated statements of operations.  The majority of fair value adjustments included in earnings is attributable to changes in estimated instrument-specific future credit losses.
As September 30, 2014 the Borrower Loans that were 90 days or more delinquent, had an aggregate principal amount of $1.5 million and a fair value of $0.14 million.

Loan_Servicing_Note

Loan Servicing Note	9 Months Ended
	Sep. 30, 2014
Loan Servicing Note [Abstract]	'
Loan Servicing Note	'
	4	Loan Servicing Note:
	The Company initially records servicing assets and liabilities at their estimated fair values when the Company sells whole loans to unrelated third-party whole loan buyers.   The initial fair value of such servicing assets or liabilities is amortized in proportion to and over the period of estimated servicing income or loss.
	Fair value
	Discounted cash flow – Discounted cash flow valuation techniques generally consist of developing an estimate of future cash flows that are expected to occur over the life of a financial instrument and then discounting those cash flows at a rate of return that results in the fair value amount.
	Significant unobservable inputs presented in the table below are those that the Company considers significant to the estimated fair values of the Level 3 servicing assets and liabilities. The Company considers unobservable inputs to be significant, if by their exclusion, the estimated fair value of the Level 3 asset or liability would be impacted by a significant percentage change, or based on qualitative factors such as the nature of the instrument and significance of the unobservable inputs relative to other inputs used within the valuation. The following is a description of the significant unobservable inputs provided in the table.
	Market servicing rate – The Company estimates adequate servicing compensation rates of what a market participant would earn to service the loans that the Company sells to third parties. This rate is calculated on the loan balance on a per annum basis.  The Company estimated these market servicing rates based on observable market rates for other loan types in the industry, adjusted for the unique loan attributes that are present in the specific loans that the Company sells and services and information from a backup service provider.
	Discount rate – The discount rate is a rate of return used to discount future expected cash flows to arrive at a present value, which represents the fair value of the loan servicing rights. The discount rates for the projected net cash flows of loan servicing rights are our estimates of the rates of return that investors in servicing rights for unsecured consumer credit obligations would require for the various credit grades of the underlying loans. Discount rates for servicing rights on existing loans are adjusted to reflect the time value of money. A risk premium component is implicitly included in the discount rates to reflect the amount of compensation market participants require due to the uncertainty inherent in the instruments’ cash flows resulting from risks such as credit and liquidity.
	Default Rate – The default rate presented is an annualized, average estimate considering all loan categories, and represents an aggregate of conditional default rate curves for each credit grade or loan category. Each point on a particular loan category’s curve represents the percentage of principal expected to default per period based on the term and age of the underlying loans. The assumption regarding defaults directly reduces servicing revenues because the amount of servicing revenues received is based on the amount of outstanding principal each period. In addition, defaults also reduce the expected terms of the loans, which are used to project future servicing revenues.
	Significant Unobservable Inputs
	The following table presents quantitative information about the significant unobservable inputs used for our servicing asset/liability fair value measurements at September 30, 2014 and December 31, 2013:
			Weighted Average
	Unobservable Input		30-Sep-14			31-Dec-13
	Discount rate			9.6	%**		9.9	%**
	Default rate			5.5	%**		5.6	%**
	Market servicing rate			0.65	%		0.65	%
	** Represents weighted average or aggregate assumptions considering all credit grades.
	Servicing asset/liability activity:
	The following tables present additional information about Level 3 servicing assets and liabilities being amortized for the three and nine months ended September 30, 2014 (in thousands).  There were no servicing assets or liabilities recorded at September 30, 2013.
			Three Months Ended
			30-Sep-14
			Servicing			Servicing
			Assets			Liabilities
	Amortized cost at June 30, 2014		$	968		$	857
	Additions			1,044			414
	Less: Amortization			(157	)		(140	)
	Amortized cost at September 30, 2014		$	1,855		$	1,131
			Nine Months Ended
			30-Sep-14
			Servicing			Servicing
			Assets			Liabilities
	Amortized cost at December 31, 2013		$	260		$	339
	Additions			1,873			1,064
	Less: Amortization			(278	)		(272	)
	Amortized cost at September 30, 2014		$	1,855		$	1,131

Loans_Held_for_Sale

Loans Held for Sale	9 Months Ended
	Sep. 30, 2014
Loans Held for Sale [Abstract]	'
Loans Held for Sale	'
	5	Loans Held for Sale
	Loans held for sale on the condensed consolidated balance sheets as of September 30, 2014 and December 31, 2013, was $16.4 million and $3.9 million, respectively. For the nine months ended September 30, 2014 and 2013, a total of $229.7 million and $0.07 million of Borrower Loans was originated through the platform as Loans held for sale. For the nine months ended September 30, 2014 and 2013, $216.3 million and $0 of these Borrower Loans were sold to unrelated third parties through the Whole Loan Channel. When a Borrower Loan has been funded by the Company in whole, or in part, the portion of the borrower’s monthly loan payment that corresponds to the percentage of the Borrower Loan that is funded is retained. In these cases, interest income is recorded on these Borrower Loans.

Repurchase_and_Indemnification

Repurchase and Indemnification Obligation	9 Months Ended
	Sep. 30, 2014
Repurchase and Indemnification Obligation [Abstract]	'
Repurchase and Indemnification Obligation	'
	6	Repurchase and Indemnification Obligation
	For the three months ended September 30, 2014 and 2013, the liability for repurchase and indemnification obligation was $0.03 million and $0.01 million, respectively. For the nine months ended September 30, 2014 and 2013, the liability for repurchase and indemnification obligations was $0.14 million and $0.02 million, respectively.   The expense was included in the cost of services line in the Statement of Operations.  The balance of the Repurchase and indemnification obligation as of September 30, 2014 and December 31, 2013, was $0.16 million and $0.03 million, respectively.

Net_Loss_Per_Share_Available_t

Net Loss Per Share Available to Common Stockholders	9 Months Ended
	Sep. 30, 2014
Net Loss Per Share Available to Common Stockholders [Abstract]	'
Net Loss Per Share	'
	7	Net Loss Per Share Available to Common Stockholders
	The Company uses the two-class method to compute net loss per share because the Company has issued securities, other than common stock, that contractually entitle the holders to participate in dividends and earnings of the Company. The two-class method requires earnings for the period to be allocated between common stock and participating securities based upon their respective rights to receive distributed and undistributed earnings. Prior to their conversion to common shares, each series of the Company’s convertible preferred stock was entitled to participate on an as-if-converted basis in distributions, when and if declared by the board of directors (“Board of Directors”), that were made to common stockholders and as a result these shares were considered participating securities. During the three months ended September 30, 2014, certain shares issued as a result of the early exercise of stock options, which are subject to a repurchase right by the Company, were entitled to receive non-forfeitable dividends during the vesting period and as a result were considered participating securities.
	Under the two-class method, for periods with net income, basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Net income attributable to common stockholders is computed by subtracting from net income the portion of current year earnings that the participating securities would have been entitled to receive pursuant to their dividend rights had all of the year’s earnings been distributed. No such adjustment to earnings is made during periods with a net loss, as the holders of the participating securities have no obligation to fund losses. Diluted net loss per common share is computed under the two-class method by using the weighted average number of shares of common stock outstanding, plus, for periods with net income attributable to common stockholders, the potential dilutive effects of stock options and warrants. In addition, the Company analyzes the potential dilutive effect of the outstanding participating securities under the “if-converted” method when calculating diluted earnings per share, in which it is assumed that the outstanding participating securities convert into common stock at the beginning of the period. The Company reports the more dilutive of the approaches (two class or “if-converted”) as its diluted net income per share during the period. Due to net losses available to common stockholders for the three and nine months ended September 30, 2014 and 2013, basic and diluted loss per share were the same, as the effect of potentially dilutive securities would have been anti-dilutive.
	The adjustment from net income (loss) to net loss available to common shareholders represents the excess over cost paid to certain preferred shareholders upon repurchase of their preferred shares as described below in Note 8 Convertible Preferred Stock and Stockholders' Equity (Deficit). The weighted average shares used in calculating basic and diluted net loss per share excludes shares that are disclosed as outstanding shares in the Condensed Consolidated Balance Sheet and Condensed Consolidated Statement of Stockholders' Equity because such shares are restricted as they were associated with options that were early exercised and continue to remain unvested.
	Basic and diluted net loss per share was calculated as follows (in thousands, except for share and per share amounts):
			Three months ended						Nine months ended
			September 30,						September 30,
			2014			2013			2014			2013
	Numerator:
	Net loss available to common stockholders for basic and diluted EPS		$	(12,168	)	$	(4,963	)	$	(14,710	)	$	(24,815	)
	Denominator:
	Weighted average shares used in computing basic and diluted net loss per share			9,280,334			6,927,648			8,740,785			6,119,987
	Basic and diluted net loss per share		$	(1.31	)	$	(0.72	)	$	(1.68	)	$	(4.05	)
	The number of shares reflect a 10-for-1 reverse stock split effected by the Company on October 29, 2013
	Due to losses attributable to the Company’s common shareholders for each of the periods below, the following potentially dilutive shares are excluded from the diluted net loss per share calculation because they were anti-dilutive under the treasury stock or if converted method, in accordance with ASC Topic 260:
			Three and Nine months ended September 30
			2014			2013
	Excluded Securities:		(shares)			(shares)
	Convertible preferred stock issued and outstanding			30,699,957			22,156,922
	Stock options issued and outstanding			4,540,101			979,483
	Unvested stock options exercised			4,768,109			6,461,797
	Warrants issued and outstanding			220,882			218,797
	Total common stock equivalents excluded from diluted net loss per common share computation			40,229,049			29,816,999
	The number of shares issued and outstanding reflect a 10-for-1 reverse stock split effected by the Company on October 29, 2013.

Convertible_Preferred_Stock_an

Convertible Preferred Stock and Stockholders Equity (Deficit)	9 Months Ended
	Sep. 30, 2014
Convertible Preferred Stock and Stockholders Equity (Deficit) [Abstract]	'
Convertible Preferred Stock and Stockholders Equity (Deficit)	'
	8	Convertible Preferred Stock and Stockholders’ Equity (Deficit)
	Convertible Preferred Stock
	Under the Company's certificate of incorporation, preferred stock is issuable in series, and the Company’s Board of Directors is authorized to determine the rights, preferences, and terms of each series.
	In January 2013, the Company issued and sold 13,868,152 shares of new Series A (“Series A”) preferred stock in a private placement at a purchase price of $1.44 per share for $19.8 million, net of issuance costs.  In connection with that sale, the Company issued 5,117,182 shares at par value $0.01 per share of Series A-1 (“Series A-1”) convertible preferred stock to the holders of shares of the Company’s preferred stock that was outstanding immediately prior to the sale (“Old Preferred Shares”) in consideration for such stockholders participating in the sale. In connection with the new Series A sale, Old Preferred Shares were converted into shares of common stock at a ratio of 1:1 if the holder of the Old Preferred Shares participated in the new Series A sale or at a 10:1 ratio if the holder of the Old Preferred Shares did not so participate. In addition, each such participating holder received a share of new Series A-1 preferred stock for every dollar of liquidation preference associated with an Old Preferred Share held by such holder. Each share of Series A-1 preferred stock has a liquidation preference of $10.00 and converts into common stock at a ratio of 1,000,000:1.  These securities were sold in reliance on the exemption from the registration requirements of the Securities Act set forth in Section 4(2) of the Securities Act and Regulation D promulgated thereunder regarding sales by an issuer not involving a public offering.
	In September 2013, the Company issued and sold 8,288,734 shares of new Series B (“Series B”) preferred stock in a private placement at a purchase price of $3.02 per share for approximately $24.9 million, net of issuance costs.
	In May 2014, the Company issued and sold 4,880,954 shares of new Series C (“Series C”) preferred stock in a private placement at a purchase price of $14.36 per share for approximately $69.9 million, net of issuance costs.  The purpose of this share issuance was to raise funds for the below tender offer and general operating needs.
	On June 18, 2014, the Company issued a Tender Offer Statement to purchase up to 1,392,757 shares, in the aggregate, of its Series A Preferred Stock and Series B Preferred Stock, at a price equal to $14.36 per share. Upon closure of the tender offer on July 16, 2014, 156,508 shares of Series A Preferred Stock and 1,133,558 share of Series B Preferred Stock were purchased for a total price of $18.5 million.
	Convertible		Par		Authorized, Issued and		Liquidation Preference
	Preferred Stock		Value		Outstanding shares as of September 30, 2014		($,000s)
	New Series A		$	0.01		13,711,644	$	19,774
	Series A-1			0.01		4,952,183		49,522
	New Series B			0.01		7,155,176		21,581
	New Series C			0.01		4,880,954		70,075
						30,699,957	$	160,952
	The number of shares issued and outstanding reflect a 10-for-1 reverse stock split effected by the Company on October 29, 2013.
	Dividends
	Dividends on shares of the new Series A, new Series B and new Series C preferred stock are payable only when, as, and if declared by the Board of Directors. No dividends will be paid with respect to the common stock until any declared dividends on the new Series A preferred stock, new Series B preferred stock and new Series C preferred stock have been paid or set aside for payment to the new Series A preferred stockholders, new Series B preferred stockholders and new Series C preferred stockholders. After payment of any such dividends, any additional dividends or distributions will be distributed among all holders of common stock and preferred stock in proportion to the number of shares of common stock that would be held by each such holder if all shares of preferred stock were converted to common stock at the then effective conversion rate. To date, no dividends have been declared on any of the Company’s preferred stock or common stock, and there are no dividends in arrears at September 30, 2014.
	Conversion
	Under the terms of the Company’s amended and restated certificate of incorporation, the holders of preferred stock have the right to convert such preferred stock into common stock at any time. In addition, all preferred stock automatically converts into common stock (i) immediately prior to the closing of an IPO that values the Company at least at $750 million and that results in aggregate proceeds to the Company of at least $100 million or (ii) upon a written request from the holders of at least 60% of the voting power of the outstanding preferred stock (on an as-converted basis) including at least 14% of the voting power of the outstanding Series A-1 preferred stock. In addition, if a holder of the new Series A preferred stock has converted any of the new Series A preferred stock, then all of such holder’s shares of Series A-1 preferred stock also will be converted upon a liquidation event. In lieu of any fractional shares of common stock to which a holder would otherwise be entitled, the Company shall pay such holder cash in an amount equal to the fair market value of such fractional shares, as determined by the Board of Directors. At present, the new Series A preferred stock, new Series B preferred stock and the new Series C preferred stock converts into the Company common stock at a 1:1 ratio while the Series A-1 preferred stock converts into the Company common stock at a 1,000,000:1 ratio.
	Liquidation Rights
	The Company’s convertible preferred stock has been classified as temporary equity on the accompanying balance sheets in accordance with authoritative guidance. The preferred stock is not redeemable; however, upon in the event of a voluntary or involuntary liquidation, dissolution, change in control or winding up of the Company, holders of the convertible preferred stock may have the right to receive its liquidation preference under the terms of the Company’s certificate of incorporation.
	Each holder of new Series A preferred stock, new Series B preferred stock and new Series C preferred stock is entitled to receive, on a pari passu basis, prior and in preference to any distribution of proceeds from a liquidation event to the holders of Series A-1 preferred stock or common stock, an amount per share for each share of new Series A preferred stock, new Series B preferred stock and new Series C preferred stock equal to the sum of the liquidation preference specified for such share and all declared but unpaid dividends, if any, on such share. After the payment or setting aside for payment to the holders of new Series A preferred stock, new Series B preferred stock and new Series C preferred stock, the holders of Series A-1 preferred stock are entitled to receive, prior and in preference to any distribution of proceeds to the holders of common stock an amount per share for each such share of Series A-1 preferred stock equal to the sum of the liquidation preference specified for such share and all declared but unpaid dividends, if any, on such share. After the payment or setting aside for payment to the holders of new Series A preferred stock, new Series B preferred stock, new Series C preferred stock and Series A-1 preferred stock, the entire remaining proceeds legally available for distribution will be distributed pro rata to the holders of new Series A preferred stock and common stock in proportion to the number of shares of common stock held by them assuming the new Series A preferred stock has been converted into shares of common stock at the then effective conversion rate, provided that the maximum aggregate amount per share of new Series A preferred stock which the holders of new Series A preferred stock shall be entitled to receive is three times the original issue price for the new Series A preferred stock. At present, the liquidation preferences are equal to $1.44215155 per share for the new Series A preferred stock, $10.00 per share for the Series A-1 preferred stock, $3.01613647 per share for the new Series B preferred stock and $14.356821052 per share for the new Series C preferred stock.
	Voting
	Each holder of shares of preferred stock is entitled to the number of votes equal to the number of shares of common stock into which such shares of preferred stock could be converted and has voting rights and powers equal to the voting rights and powers of the common stock.  The holders of preferred stock and the holders of common stock vote together as a single class (except with respect to certain matters that require separate votes or as required by law), and are entitled to notice of any stockholders’ meeting in accordance with the bylaws of the Company.
	Authorized and Outstanding Shares:
	The Company, through its amended and restated certificate of incorporation, is the sole issuer of common stock and related options and warrants. On October 29, 2013, the Company amended and restated its certificate of incorporation to effect a 10-for-1 reverse stock split. On May 15, 2014, the Company amended and restated its certificate of incorporation to effect an increase in authorized shares of stock.  The total number of shares of stock which the Company has the authority to issue is 80,083,905, consisting of 47,928,883 shares of common stock, $0.01 par value per share, and 32,155,022 shares of preferred stock, $0.01 par value per share, 13,868,152 of which are designated as new Series A preferred stock, 5,117,182 of which are designated as Series A-1 preferred stock and 8,288,734 of which are designated new Series B preferred stock and 4,880,954 of which are designated as Series C preferred stock.  As of September 30, 2014, 14,216,600 shares of common stock were issued and outstanding.  As of December 31, 2013, 13,406,539 shares of common stock were issued and outstanding.  Each holder of common stock is entitled to one vote for each share of common stock held.
	Common Stock Issued for Services
	Nonemployees
	The Company did not grant any immediately vested common shares to nonemployees for services during the nine months ended September 30, 2014. During the year ended December 31, 2013, the Company granted an immediately vested option to purchase 47,601 common shares to a nonemployee for services.
	Common Stock Issued upon Exercise of Stock Options
	During the nine months ended September 30, 2014 and the year ended December 31, 2013, the Company issued 853,151 and 7,327,959 shares of common stock, respectively, upon the exercise of options for cash proceeds of $0.53 million and $0.86 million, respectively, of which 796,828 and 6,499,463 were unvested, respectively.   Certain options are eligible for exercise prior to vesting. These unvested options may be exercised for restricted shares of common stock that have the same vesting schedule as the options. The Company records a liability for the exercise of unvested shares, which is reclassified to common stock and additional paid-in capital as the shares vest.  Should the holder’s employment be terminated, the unvested restricted shares are subject to repurchase by the Company at the purchase price paid for such shares. At September 30, 2014 and December 31, 2013, there were 4,768,109 and 5,594,134 shares respectively of restricted stock outstanding that remain unvested and subject to the Company’s right of repurchase.
	For the nine months ended September 30, 2014, the Company repurchased 116,018 shares of restricted stock for $0.02 million, upon termination of employment of various employees.
	Common Stock Issued upon Exercise of Stock Warrants
	For the nine months ended September 30, 2014 the Company issued 72,928 shares of common stock, upon the exercise of warrants.

Stock_Option_Plan_and_Compensa

Stock Option Plan and Compensation	9 Months Ended
	Sep. 30, 2014
Stock Option Plan and Compensation [Abstract]	'
Stock Option Plan and Compensation	'
	9	Stock Option Plan and Compensation
	Incentive stock options are granted to employees at an exercise price not less than 100% of the fair value of the Company’s common stock on the date of grant. Non-statutory stock options are granted to consultants, directors and employees who have incentive stock options that the underlying stock has a fair value greater than $100,000 exercisable during the year in which the non-statutory stock options are granted.  Non-statutory stock options are granted at an exercise price not less than 100% of the fair value of the Company’s common stock on the date of grant. If options are granted to stockholders who hold 10% or more of the Company’s common stock on the option grant date, then the exercise price shall not be less than 110% of the fair value of the Company’s common stock on the date of grant. As there is no active trading market for these options, such estimate may ultimately differ from valuations completed by an independent party. The options generally vest over four years, which is the same as the performance period. In no event are options exercisable more than ten years after the date of grant.
	In 2005, the Company’s stockholders approved the adoption of the 2005 Plan. On December 1, 2010, the Company’s stockholders approved the adoption of the Amended and Restated 2005 Stock Plan (as amended and restated, the “Plan”). Under the Plan, options to purchase up to 187,946 shares of common stock were reserved and may be granted to employees, directors, and consultants by the Board of Directors and stockholders to promote the success of the Company’s business. During 2011, the Board of Directors and stockholders of the Company increased the total number of options under the Plan by an additional 455,087 for a total of 1,353,966 available for grant. During 2012, the Board of Directors, either directly or through the compensation committee, and stockholders of the Company increased the total number of options under the Plan by an additional 170,000 for a total of 1,523,966, available for grant. During 2013, the Board of Directors, either directly or through the compensation committee, and stockholders of the Company increased the total number of options under the Plan by an additional 11,110,825 for a total of 12,634,791 available for grant. During the first six months of 2014, the Board of Directors, either directly or through the compensation committee, and stockholders of the Company increased the total number of options under the Plan by an additional 1,560,464 for a total of 14,195,255.
	The activity of options that were early exercised under the plan as for the period below:
			Early exercised				Weighted average
			options, unvested				exercise price
	Balance as of January 1, 2014			5,594,134				0.11
	Exercise of non-vested stock options			796,828				0.57
	Repurchase of restricted stock			(111,095	)			(0.10	)
	Restricted stock vested			(1,511,758	)			(0.11	)
	Balance as of Sept  30, 2014			4,768,109				0.18
	Option activity under the Plan is summarized as follows for the period below:
							Weighted-
			Options Issued				Average Exercise
			and Outstanding				Price
	Balance as of January 1, 2014			938,585			$	1.39
	Options granted (weighted average fair value of $0.30)			4,669,091				1.24
	Options exercised – vested			(56,323	)			1.28
	Options exercised – nonvested			(796,828	)			0.57
	Options forfeited			(214,424	)			3.53
	Balance as of September 30, 2014			4,540,101			$	0.91
	Options outstanding and exercisable at September 30, 2014			1,891,438			$	1.4
	The share amounts and share prices reflect a 10-for-1 reverse stock split effected by the Company on October 29, 2013.
	Other Information Regarding Stock Options
	Additional information regarding the Company’s common stock options outstanding as of September 30, 2014 is as follows:
					Options Outstanding												Options Exercisable
	Range of				Number				Weighted –				Weighted –				Number		Weighted -
	Exercise				Outstanding				Avg.				Avg.				Vested		Avg.
	Prices								Remaining				Exercise						Exercise
									Life				Price						Price
	$	0.10 - $0.10				170,728				8.87			$	0.1				60,113	$	0.1
		0.57 - 0.57				3,203,051				9.37				0.57				1,339,911		0.57
		1.20 – 1.20				133,334				6.96				1.2				117,435		1.2
		1.70 – 1.70				99,593				7.65				1.7				61,049		1.7
		2.00 – 2.00				287,933				5.82				2				287,680		2
		5.00 - 5.00				7,000				2				5				7,000		5
		5.60 - 5.60				18,250				4.96				5.6				18,250		5.6
		5.65-5.65				620,212				9.87				5.65				-		5.65
	$	0.10 - $19.40				4,540,101				9.06			$	1.41				1,891,438	$	1.4
	The number of options reflects a 10-for-1 reverse stock split effected by the Company on October 29, 2013.
	The number of options outstanding, vested and expected to vest as of September 30, 2014 was 3,990,512 and the weighted-average remaining contractual life was 9.06 years.
	No compensation expense is recognized for unvested shares that are forfeited upon termination of service, and the stock-based compensation expense for the nine months ended September 30, 2014 and 2013 reflect the expenses that the Company expects to recognize after the consideration of estimated forfeitures.
	The Company estimates its forfeiture rate based on an analysis of its actual forfeitures and will continue to evaluate the adequacy of the forfeiture rate based on actual forfeiture experience, analysis of employee turnover behavior, and other factors. The impact from a forfeiture rate adjustment will be recognized in full in the period of adjustment, and if the actual number of future forfeitures differs from that estimate, the Company may be required to record adjustments to stock-based compensation expense in future periods.
	The fair value of the Company’s stock option awards for the three and nine months ended September 30, 2014 and 2013 was estimated at the date of grant using the Black-Scholes model with the following average assumptions:
		Three Months ended								Nine Months ended
		September 30,								September 30,
		2014					2013			2014				2013
	Volatility of common stock			67.47	%			69.57	%			69.42	%			69.56	%
	Risk-free interest rate			1.92	%			1.39	%			1.91	%			1.9	%
	Expected life*	5.9 years					5.8 years			5.9 years				5.8 years
	Dividend yield			0	%			0	%			0	%			0	%
	Weighted-average fair value of grants		$	3.46			$	0.1			$	0.76			$	0.01
	*For nonemployee stock option awards, the expected life is the contractual term of the award, which is generally ten years.
	The Black-Scholes model requires the input of highly subjective assumptions, including the expected stock price volatility, as a result the changes in the subjective input assumptions can materially affect the fair value estimate.
	Total stock-based compensation expense reflected in the statements of operations for the nine months ended September 30, 2014 and 2013 is $0.76 million and $0.18 million, respectively, and $0.27 million and $0.10 million for the three months ended September 30, 2014 and 2013. This expense is included in the Compensation and Benefits line in the Statements of Operations. As of September 30, 2014, the unamortized stock-based compensation expense related to PMI employees’ unvested stock-based awards was approximately $2.4 million, which will be recognized over the remaining weighted-average vesting period of approximately 3.3 years.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	10	Income Taxes
	As part of the process of preparing the condensed consolidated financial statements, the Company is required to estimate its income taxes in each of the jurisdictions in which it operates. This process involves determining the income tax expense (benefit) together with calculating the deferred income tax expense (benefit) related to temporary differences resulting from differing treatment of items, such as fair value of loans or deductibility of certain intangible assets, for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included within the accompanying condensed consolidated balance sheets. The Company must then assess the likelihood that the deferred tax assets will be recovered through the generation of future taxable income.
	Due to the book and tax net losses incurred during the three and nine months ended September 30, 2014 and 2013, zero income tax expense has been incurred during those periods. In addition, substantial historical losses have been incurred and the Company has maintained a full valuation allowance against its net deferred tax assets because the realization of those deferred tax assets is dependent upon future earnings, and the amount and timing of those earnings, if any is uncertain.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies [Abstract]	'
Commitments and Contingencies	'
	11	Commitments and Contingencies
	Future Minimum Lease Payments
	During the period the Company signed new leases for the new corporate headquarters at 221 Main Street in San Francisco California and for the co-location facility are under non-cancelable operating leases that expire in February 2023 and August 2015, respectively.  The Company also signed a new lease for office space in Phoenix Arizona under an operating lease that expires in June 2022.
	Future minimum rental payments under these leases as of September 30, 2014 are as follows (in thousands):
	Remaining three months of 2014		$	139
	2015			2,459
	2016			3,757
	2017			3,866
	2018			3,978
	2019			4,093
	Thereafter			12,981
	Total future operating lease obligations		$	31,273
	Rental expense under premises-operating lease arrangements was $0.7 million and $0.2 million for the three months ended September 30, 2014 and 2013, respectively.  Rental expense under premises-operating lease arrangements was $1.0 million and $0.5 million for the nine months ended September 30, 2014 and 2013, respectively.
	The Company amended and restated an agreement with WebBank, an FDIC-insured Utah-chartered industrial bank, under which all Borrower Loans originated through the platform are made by WebBank under its bank charter. The arrangement allows for Borrower Loans to be offered to borrowers at uniform nationwide terms. The Company is required to pay the greater of a monthly minimum fee or a fee calculated based on a certain percentage of monthly Borrower Loan origination volume.
	The Company has an agreement with a third party broker-dealer in which the third party agreed to operate and maintain the Note Trader Platform for the secondary trading of Notes.  The Company is required to pay the third party broker-dealer an agreed upon monthly fee which equals the difference between the minimum monthly fee and the transaction fees collected by the third party provider during that month.
	Securities Law Compliance
	From inception through October 16, 2008, the Company sold approximately $178.0 million of Borrower Loans to investor members through the old platform structure, whereby the Company assigned promissory notes directly to investor members. The Company did not register the offer and sale of the promissory notes corresponding to these Borrower Loans under the Securities Act or under the registration or qualification provisions of any state securities laws. The Company believes that the question of whether or not the operation of the platform during this period constituted an offer or sale of “securities” involved a complicated factual and legal analysis and was uncertain. If the sales of promissory notes offered through the platform during this period were viewed as a securities offering, the Company would have failed to comply with the registration and qualification requirements of federal and state laws.
	The Company’s decision to restructure the platform and cease sales of promissory notes offered through the platform effective October 16, 2008 limited this contingent liability to the period covering its activities prior to October 16, 2008.
	On April 21, 2009, the Company and the North American Securities Administrators Association (“NASAA”) reached agreement on the terms of a model consent order between the Company and the states in which the Company offered promissory notes for sale prior to November 2008. The consent order involves payment by the Company of up to an aggregate of $1million in penalties, which have been allocated among the states based on the Company’s promissory note sale transaction volume in each state prior to November 2008. A state that enters into a consent order receives its portion of the $1 million in exchange for its agreement to terminate, or refrain from initiating, any investigation of the Company’s promissory note sale activities prior to November 2008. Penalties are paid promptly after a state enters into a consent order. NASAA has recommended that each state enter into a consent order. However, no state is obliged to do so, and there is no deadline by which a state must make its decision. The Company is not required to pay any portion of the penalty to those states that do not elect to enter into a consent order. If a state does not enter into a consent order, it is free to pursue its own remedies against the Company, subject to any applicable statute of limitations. As of September 30, 2014, the Company has entered into consent orders with 34 states and has paid an aggregate of $0.47 million in penalties to those states.
	As of September 30, 2014 and December 31, 2013, the Company had accrued approximately $0.25 million and $0.25 million, respectively, in connection with the contingent liability associated with the states that have not entered into consent orders, in accordance with ASC Topic 450, Contingencies. The methodology applied to estimate the accrual was to divide the $1 million maximum fee pro-rata by state, using the Company’s promissory note sales from inception through November 2008. A weighting was then applied by state to each state that has not entered into a consent order, assigning a likelihood that the penalty will be claimed. In estimating the probability of a claim being made by a state, the Company considered factors such as the standard terms of the consent orders; whether the state ever gave any indication of concern regarding the sale of promissory notes through the platform; the probability of a state electing not to enter into a consent order in order to pursue its own litigation against the Company; whether the penalty is sufficient to compensate a state for the cost of processing the settlement consent order; and finally the impact that current economic conditions have had on state governments. The Company will continue to evaluate this accrual and related assumptions as new information becomes known.
	In 2008, plaintiffs filed a class action lawsuit against the Company and certain of its executive officers and directors in the Superior Court of California, County of San Francisco, California. The suit was brought on behalf of all promissory note purchasers on the platform from January 1, 2006 through October 14, 2008. The lawsuit alleged that the Company offered and sold unqualified and unregistered securities in violation of the California and federal securities laws. On July 19, 2013 solely to avoid the costs, risks and uncertainties inherent in litigation, and without admitting any liability or wrongdoing, the parties to the class action litigation agreed to enter into a settlement to resolve all claims related thereto (the “Settlement”). In connection with the Settlement, the Company agreed to pay an aggregate amount of $10 million into a settlement fund, split into four annual installments of $2 million in 2014, $2 million in 2015, $3 million in 2016 and $3 million in 2017. The Settlement received final approval in a final order and judgment entered by the Superior Court on April 16, 2014. Pursuant to the final order and judgment, the claims in the class action were dismissed, and at the effective time of the Settlement (June 16, 2014), the defendants will have been released by the plaintiffs from all claims that were or could have been asserted concerning the issues alleged in the class action lawsuit. The reserve for the class action settlement liability is $7.8 million in the condensed consolidated balance sheet as of September 30, 2014.
	On July 1, 2011, the Company and Greenwich entered into a Stipulated Order of Judgment pursuant to which the Company agreed to dismiss its remaining claims against Greenwich. On August 12, 2011, Greenwich filed a notice of appeal of the court's decision regarding Greenwich’s duty to defend up to $2 million. This appeal was dismissed On October 22, 2012.

Related_Parties

Related Parties	9 Months Ended
	Sep. 30, 2014
Related Parties [Abstract]	'
Related Parties	'
	12	Related Parties
	Since the Company’s inception, it has engaged in various transactions with its directors, executive officers and holders of more than 5% of its voting securities, and immediate family members and other affiliates of its directors, executive officers and 5% stockholders.
	Certain of the Company’s executive officers, directors who are not executive officers, and affiliates participate on the Company’s lending platform by placing bids and purchasing Notes and Borrower Loans.  The aggregate amount of Notes and Borrower Loans purchased and the income earned by parties deemed to be affiliates and related parties of the Company as of September 30, 2014 and 2013 are summarized below (amounts in thousands):
			Aggregate Amount of Notes				Income Earned on Notes
			and Borrower Loans				and Borrower Loans
	Related Party		Purchased September 30,				nine months ended September 30,
			2014		2013		2014		2013
	Executive officers and management		$	2,100	$	806	$	83	$	30
	Directors			5,198		4,578		81		204
			$	7,298	$	5,384	$	164	$	234
	The Notes and Borrower Loans of parties deemed to be affiliates and related parties of the Company, were obtained on terms and conditions that were not more favorable than those obtained by other Note and Borrower Loan purchasers. Of the total aggregate amount of Notes and Borrower Loans purchased since inception approximately $0.41 million or 6% of principal and $0.36 million or 7% of principal has been charged off through September 30, 2014 and 2013, respectively. The Company has earned approximately $0.01 million in servicing fee revenue related to these Notes and Borrower Loans for the three months ended September 30, 2014 and 2013.

Postretirement_Benefit_Plans

Post-retirement Benefit Plans	9 Months Ended
	Sep. 30, 2014
Post-retirement Benefit Plans [Abstract]	'
Post-retirement Benefit Plans	'
	13	Post-retirement Benefit Plans
	The Company has a 401(k) plan that covers all employees meeting certain eligibility requirements. The 401(k) plan is designed to provide tax-deferred retirement benefits in accordance with the provisions of Section 401(k) of the Internal Revenue Code. Eligible employees may defer up to 90% of eligible compensation up to the annual maximum as determined by the Internal Revenue Service.  The Company’s contributions to the plan are discretionary. During the nine months ended September 30, 2014, the Company has contributed $0.38 million to the plan.

Prior_Period_Adjustments

Prior Period Adjustments	9 Months Ended
	Sep. 30, 2014
Prior Period Adjustments [Abstract]	'
Prior Period Adjustments	'
	14	Prior Period Adjustments
	Subsequent to the issuance of our condensed consolidated financial statements for the period ended June 30, 2014, Prosper Marketplace discovered an error in its estimates of net service income which resulted in an overstatement of net loan servicing rights as of December 31, 2013 and an overstatement of the gain recognized on the sale of loans which was included in other revenues in the fourth quarter of 2013 by approximately $223.  Furthermore, the Company inappropriately netted loan servicing liabilities against its loan servicing assets.  This resulted in a $223 overstatement of the loan servicing assets, which were originally included in “Borrower Loans Receivable at Fair Value” for $144.  The Company corrected this error by reclassifying the adjusted gross serving assets of $260 to “Prepaid and Other Assets and recognized the servicing liabilities of $339 in “Accounts Payable and Other Liabilities.
	The Company also discovered an error related to measurement of the Class Action Settlement Liability.  Upon the courts preliminary approval of the settlement during the quarter ended December 31, 2013, this liability became payable at fixed future dates so the Company should have recognized the liability based on the present value of the future payments rather than the gross amount of such future payments.  This error resulted in an overstatement of the Class Action Settlement Liability and the Class Action Settlement expense recognized as of and for the year end December 31, 2013 of $261.
	Additionally, the Company discovered that the Convertible Preferred Stock was incorrectly classified within permanent stockholders’ equity in its consolidated balance sheet as of December 31, 2013.  Since the Convertible Preferred Stockholders are entitled to receive their liquidation preference upon a change-in-control transaction the Convertible Preferred Stock should be classified as temporary equity.  This resulted in a $45,118 reclassification of the Convertible Preferred Stock from permanent equity to temporary equity as of December 31, 2013.
	Lastly, the Company discovered the following classification errors within its Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2013:
		·	Changes in Restricted Cash were inappropriately classified as changes in cash flows from operating activities rather than changes in cash flows from investing activities.
		·	Cash flows from the purchase and sale of Loans held for sale was inappropriately classified within cash flows from investing activities rather than cash flows from operating activities.
		·	A portion of the change in fair value of Borrower Loans and Notes was inappropriately reflected as a cash flow from investing and financing activities, respectively, rather than an adjustment to reconcile net income to net cash used in operating activities.
		·	The proceeds from sale of borrower loans held at fair value were netted against origination of borrower loans at fair value.
	The aggregate impact of these errors were an understatement of cash flows from operating activities of $369; an overstatement of cash flows from investing activities of $12,080; and an $11,711understatement of cash flows from financing activities for the nine months ended September 30, 2013.
	Finally, the Company corrected the number of outstanding common shares on the face of the balance sheet and in the Statements of Stockholders’ Equity as a result of an error in the calculation of restricted shares repurchased.  The number of common shares outstanding at December 31, 2013 was previously stated as 13,902,478 and has been corrected to 13,588,803.
	The Company evaluated these errors and determined that they were immaterial to the previously issued financial statements and therefore, amendment of previously filed reports was not required. However, in order to provide consistency in the consolidated financial statements, corrections for these immaterial amounts are reflected in the Company’s accompanying Consolidated Balance Sheet as of December 31, 2013 and Consolidated Statement of Cash Flows for the nine months ended September 30, 2013.  The impact of the corrections on specific line items in the Consolidated Balance Sheet as of December 31, 2013 and the Condensed Consolidated Cash Flows for the nine months ended September 30, 2013 are presented below (in thousands):
	Condensed Consolidated Statements of Cash Flows - Nine months ended September 30, 2013
			As previously			Adjustments			As corrected
			reported
	Net income (loss)		$	(24,815	)	$	-		$	(24,815	)
	Change in fair value of Borrower Loans			3,903			11,711			15,614
	Change in fair value of Notes			(4,484	)		(11,711	)		(16,195	)
	Restricted cash except for those related to investing activities			(2,334	)		334			(2,000	)
	Loans held for sale at fair value			–			35			35
	Net cash used in operating activities			(17,666	)		369			(17,297	)
	Origination of Borrower Loans held at fair value			(118,349	)		(80,786	)		(199,135	)
	Repayment of Borrower Loans held at fair value			77,215			(11,711	)		65,504
	Proceeds from sale of Borrower Loans held at fair value			-			80,786			80,786
	Repayment of Loans held for investment at fair value			106			(106	)		–
	Origination of Loans held for investment at fair value			(71	)		71			–
	Changes in restricted cash related to investing activities			–			(334	)		(334	)
	Net cash used in investing activities			(42,433	)		(12,080	)		(54,513	)
	Payment of Notes held at fair value			(76,878	)		11,711			(65,167	)
	Net cash provided by financing activities			87,099			11,711			98,810
	Condensed Consolidated Balance Sheet - December 31, 2013
			As previously			Adjustments			As corrected
			reported
	Borrower Loans Receivable at Fair Value		$	226,238		$	(144	)	$	226,094
	Prepaid and Other Assets			708			260			968
	Total Assets			268,289			116			268,405
	Accounts Payable and Accrued Liabilities			6,737			28			7,076
	Class Action Settlement Liability			10,000			(261	)		9739
	Repurchase Liability for Unvested Restricted Stock Awards			609			(50	)		559
	Total Liabilities			244,172			339			244,200
	Convertible Preferred Stock			-			45,118			45,118
	Convertible Preferred Stock			273			(273	)		-
	Additional Paid in Capital			128,140			(44,795	)		83,345
	Accumulated Deficit			(104,080	)		38			(104,042	)
	Total Stockholders' Equity (Deficit)			24,117			(45,030	)		(20,913	)
	Total Liabilities, Convertible Preferred Stock and Stockholders' Equity (Deficit)		$	268,289		$	116		$	268,405

Schedule_I_Prosper_Funding_LLC

Schedule I, Prosper Funding LLC	9 Months Ended
	Sep. 30, 2014
Schedule I, Prosper Funding LLC [Abstract]	'
Schedule I, Prosper Funding LLC	'
	Prosper Funding LLC
	Condensed Consolidated Balance Sheets
	(Unaudited)
	(amounts in thousands)
			September 30,			December 31,
			2014			2013 *
	Assets
	Cash and cash equivalents		$	2,862		$	5,789
	Restricted cash			8,721			12,299
	Loans held for sale at fair value			16,350			3,917
	Borrower loans receivable at fair value			253,068			226,094
	Property and equipment, net			2,048			1,980
	Related party receivable			73			-
	Other assets			1,450			255
	Total Assets		$	284,572		$	250,334
	Liabilities and Member’s Equity
	Accounts payable and accrued liabilities		$	4,684		$	4,026
	Notes at fair value			252,911			226,794
	Repurchase and indemnification obligation			157			32
	Related party payable			-			205
	Total Liabilities			257,752			231,057
	Member's Equity
	Member's equity			15,877			16,082
	Retained earnings			10,943			3,195
	Total Member's Equity			26,820			19,277
	Total Liabilities and Member's Equity		$	284,572		$	250,334
	The accompanying notes are an integral part of these condensed consolidated financial statements.
	* Please see Note 8
	Prosper Funding LLC
	Condensed Statements of Operations
	(Unaudited)
	(amounts in thousands)
			Three months ended September 30,						Nine months ended September 30,
			2014			2013			2014			2013
	Revenues
	Operating Revenues
	Administration Fee Revenue		$	8,574		$	2,042		$	19,525		$	4,178
	Servicing Income, net			1,574			89		$	2,965			106
	Other Revenues			635			-			814			-
	Total Operating Revenues			10,783			2,131			23,304			4,284
	Interest Income on Borrower Loans			10,724			8,892			31,014			22,391
	Interest Expense on Notes			(9,850	)		(8,435	)		(28,613	)		(21,262	)
	Net Interest Income			874			457			2,401			1,129
	Change in Fair Value on Borrower Loans, Loans Held for Sale and Notes, net			59			91			448			578
	Total Net Revenues			11,716			2,679			26,153			5,991
	Expenses
	Cost of Services			958			292			2,297			1,004
	Administration Fee Expense			6,836			1,520			15,018			2,534
	Depreciation and Amortization			273			148			761			355
	Professional Services			1			6			16			26
	Other Operating Expenses			128			63			313			157
	Total  Expenses			8,196			2,029			18,405			4,076
	Total Net Income		$	3,520		$	650		$	7,748		$	1,915
	The accompanying notes are an integral part of these condensed consolidated financial statements.
	Prosper Funding LLC
	Condensed Consolidated Statements of Cash Flows
	(Unaudited)
	(amounts in thousands)
			For the Nine Months Ended September 30,
			2014			2013*
	Cash flows from operating activities:
	Net Income		$	7,748		$	1,915
	Adjustments to reconcile net income (loss) to net cash  provided by (used in) operating activities:
Change in fair value of Borrower Loans			14,916			(16,195	)
Change in fair value of Loans held for sale			11			3
Change in fair value of Notes			(15,375	)		15,614
Initial Gain and Amortization of Servicing Rights			(808	)		–
Depreciation and amortization			761			355
Provision for repurchase and indemnification obligation			125			20
Changes in operating assets and liabilities:
Receivables and other assets			(21	)		–
Loans held for sale at fair value			(12,444	)		35
Accounts payable and accrued liabilities			87			533
Net Intercompany Payable/Receivable			(278	)		518
Net cash (used in) provided by operating activities			(5,278	)		2,798
Cash flows from investing activities:
Origination of Borrower Loans held at fair value			(823,841	)		(189,313	)
Repayment of Borrower Loans held at fair value			88,944			59,126
Proceeds from sale of borrower loans held at fair value			693,007			80,786
Purchases of property and equipment			(829	)		(1,227	)
Change in restricted cash			3,578			(969	)
Net cash used in investing activities			(39,141	)		(51,597	)
Cash flows from financing activities:
Proceeds from issuance of Notes held at fair value			130,828			108,527
Payment of Notes held at fair value			(89,336	)		(58,441	)
Net cash included in transfer of assets from PMI			–			1,875
Net cash provided by financing activities			41,492			51,961
Net (decrease) increase in cash and cash equivalents			(2,927	)		3,162
Cash and cash equivalents at beginning of the period			5,789			5
Cash and cash equivalents at end of the period		$	2,862		$	3,167
Cash paid for interest		$	28,976		$	23,725
Non - Cash Financing Activity, Distribution to Parent		$	(205	)	$	-
The accompanying notes are an integral part of these condensed consolidated financial statements.
*Please see Note 8
Prosper Funding LLC
Notes to Condensed Consolidated Financial Statements
(Unaudited)
1	Organization and Business
Prosper Funding LLC (“Prosper Funding”) was formed in the state of Delaware in February 2012 as a limited liability company with the sole equity member being Prosper Marketplace, Inc. (“PMI”).
Prosper Funding was formed by PMI to hold Borrower Loans and issue Notes through the platform.  Although Prosper Funding is consolidated with PMI for accounting and tax purposes, Prosper Funding has been organized and is operated in a manner that is intended to minimize the likelihood that it would be substantively consolidated with PMI in a bankruptcy proceeding.  Prosper Funding’s intention is to minimize the likelihood that its assets would be subject to claims by PMI’s creditors if PMI were to file for bankruptcy, as well as to minimize the likelihood that Prosper Funding will become subject to bankruptcy proceedings directly.  Prosper Funding seeks to achieve this by placing certain restrictions on its activities and implementing certain formal procedures designed to expressly reinforce its status as a distinct corporate entity from PMI.
On January 22, 2013, PMI entered into an Asset Transfer Agreement with Prosper Funding pursuant to which PMI transferred substantially all of its remaining assets to Prosper Funding, including (i) all outstanding Notes issued by PMI under the Indenture dated June 15, 2009 between PMI and Wells Fargo Bank, as trustee, (ii) all Borrower Loans held by PMI, (iii) all lender/borrower/group leader registration agreements related to such Notes or Borrower Loans, and (iv) all documents and information related to the foregoing, effective February 1, 2013.
Prosper Funding commenced operations as of February 1, 2013 when PMI transferred ownership of the platform, including all of the rights related to the operation of the platform, to Prosper Funding. Since February 1, 2013, all Notes issued and sold through the platform are issued, sold and serviced by Prosper Funding.  Pursuant to a Loan Account Program Agreement between PMI and WebBank, PMI manages the operation of the platform, as agent of WebBank, in connection with the submission of loan applications by potential borrowers, the making of related loans by WebBank and the funding of such loans by WebBank. Pursuant to an Administration Agreement between Prosper Funding and PMI, PMI manages all other aspects of the platform on behalf of Prosper Funding.
A borrower member who wishes to obtain a loan through the platform must post a loan listing, or listing, on the platform. Prosper Funding allocates listings to one of two investor member funding channels: (i) the first channel allows investor members to commit to purchase Notes, the payments of which are dependent on the payments made on the corresponding Borrower Loan (the “Note Channel”); and (ii) the second channel allows investor members to commit to purchase 100% of a Borrower Loan directly from the Company (the “Whole Loan Channel”).
All loans requested and obtained through the platform are unsecured obligations of individual borrower members with a fixed interest rate and loan terms set at three or five years as of September 30, 2014. All loans made through the platform are funded by WebBank, an FDIC-insured, Utah chartered industrial bank.  After funding a loan, WebBank sells the loan to Prosper Funding, without recourse to WebBank, in exchange for the principal amount of the loan.  WebBank does not have any obligation to purchasers of the Notes.
Prosper Funding formed Prosper Asset Holdings LLC (“PAH”) in November 2013 as a limited liability company with the sole equity member being Prosper Funding. PAH was formed to purchase Borrower Loans from Prosper Funding and sell the Borrower Loans to third parties.
As of September 30, 2014, the platform is open to investors in 31 states and the District of Columbia. Additionally, as of September 30, 2014 the platform is open to borrowers in 47 states and the District of Columbia.  Currently our platform is not offered internationally.
2	Summary of Significant Accounting Policies
Basis of Presentation
Prosper Funding’s unaudited interim condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“US GAAP”) and disclosure requirements for interim financial information and the requirements of Rule 8-03 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for complete financial statements. The unaudited interim condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2013. The balance sheet at December 31, 2013 has been derived from the audited financial statements at that date. Management believes these unaudited interim condensed consolidated financial statements reflect all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period.
The accompanying interim condensed consolidated financial statements include the accounts of Prosper Funding and its wholly-owned subsidiary PAH. All intercompany balances and transactions between Prosper Funding and PAH have been eliminated in consolidation.
Reclassifications
During the nine months ended September 30, 2014, the Company changed the presentation of its revenues in the statement of operations.   A new line called “Servicing Fees” was created and the servicing fees related to whole loans that were previously included in interest income were reclassified to this new line.   Also, the “Change in Fair Value of Borrower Loans, Loans Held for Sale and Notes, Net” was moved into the total revenues subtotal.     Lastly, the subtotals were realigned to reflect the new presentation.   These changes had no impact to net income and are reflected in the “Reclassifications” column in the table below. Management believes these changes make the income statement more useful for the readers of the financial statements and comparable with the Company’s competitors.
Use of Estimates
The preparation of Prosper Funding’s interim condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. These estimates, judgments and assumptions include but are not limited to the following: valuation of Borrower Loans and associated Notes, valuation of servicing rights, repurchase and indemnification obligation, valuation allowance on deferred tax assets, and contingent liabilities. Prosper Funding bases its estimates on historical experience from all Borrower Loans, and on various other assumptions that it believes to be reasonable under the circumstances. Actual results could differ from those estimates.
Certain Risks and Concentrations
In the normal course of its business, Prosper Funding encounters two significant types of risk: credit and regulatory. Financial instruments that potentially subject Prosper Funding to significant concentrations of credit risk consist primarily of cash, cash equivalents, and restricted cash. Prosper Funding places cash, cash equivalents, and restricted cash with high-quality financial institutions and is exposed to credit risk in the event of default by these institutions to the extent the amount recorded on the balance sheet exceeds federally insured amounts.  Prosper Funding performs periodic evaluations of the relative credit standing of these financial institutions and has not sustained any credit losses from instruments held at these financial institutions.
To the extent that Borrower Loan payments are not made, servicing income will be reduced.  A series of Notes corresponding to a particular Borrower Loan is wholly dependent on the repayment of such Borrower Loan. As a result, Prosper Funding does not bear the risk on such Borrower Loan.
Prosper Funding is subject to various regulatory requirements. The failure to appropriately identify and address these regulatory requirements could result in certain discretionary actions by regulators that could have a material effect on Prosper Funding's consolidated financial position and results of operations.
Cash and Cash Equivalents
Cash equivalents are recorded at cost, which approximates fair value. Such deposits periodically exceed amounts insured by the FDIC.
Restricted Cash
Restricted cash consists primarily of cash deposits held as collateral as required for loan funding and servicing activities.
Borrower Loans and Notes
Prosper Funding has adopted the provisions of ASC Topic 825, Financial Instrument.  ASC Topic 825 permits companies to choose to measure certain financial instruments and certain other items at fair value on an instrument-by-instrument basis with unrealized gains and losses on items for which the fair value option has been elected reported in earnings.  The fair value election, with respect to an item, may not be revoked once an election is made.  Prosper Funding does not record a specific allowance account related to the Borrower Loans funded through the Note Channel in which it has elected the fair value option, but rather estimates the fair value of such Borrower Loans and Notes using discounted cash flow methodologies adjusted for Prosper Funding’s historical payment, loss and recovery rates.
Servicing Asset/Liability
The Company records servicing assets and liabilities at their estimated fair values when the Company sells Borrower Loans to unrelated third-party buyers. The gain or loss on a loan sale is recorded in “Other Revenue” while the while the fair value of the servicing rights, which is based on the degree to which the contractual loan servicing fee is above or below an estimated market loan servicing fee is recorded as an offset in servicing assets or liabilities. Servicing assets and liabilities are recorded in “Prepaid and Other Assets” and “Accrued Expenses and Other Liabilities,” respectively, on the condensed consolidated balance sheets. The initial fair value of servicing assets or liabilities are amortized in proportion to and over the period of estimated servicing income or loss and are reported in “Servicing Fees” on the condensed consolidated statement of operations.
The Company uses a discounted cash flow model to estimate the fair value of the loan servicing assets or liabilities which considers the contractual projected servicing fee revenue that the Company earns on the loans, estimated market servicing fees to service such loans, prepayment rates, default rates and the current principal balances of the loans.
The Company periodically assesses servicing assets accounted for using the amortization method for impairment. Impairment occurs when the current fair value of the servicing assets falls below the asset’s carrying value (carrying value is the amortized cost reduced by any related valuation allowance). If servicing assets are impaired, the impairment is recognized in current-period earnings and the carrying value of the assets is adjusted through a valuation allowance. If the value of impaired servicing assets subsequently increases, the Company recognizes the increase in value in current-period earnings and adjusts the carrying value of the servicing assets through a reduction in the valuation allowance to adjust the carrying value only to the extent of the valuation allowance.
Loans Held for Sale
Loans held for sale are primarily comprised of Borrower Loans held for short durations and are recorded at cost plus accrued interest which approximates fair value. For Borrower Loans held long term, the fair value is estimated using discounted cash flow methodologies based upon a set of valuation assumptions similar to those of other Borrower Loans, which are set forth in Note 2— Fair Value Measurement.
Fair Value Measurement
Prosper Funding follows ASC Topic 820, Fair Value Measurements and Disclosures, which provides guidance regarding a fair value hierarchy, which prioritizes information used to measure fair value and the effect of fair value measurements on earnings and provides for enhanced disclosures determined by the level within the hierarchy of information used in the valuation. ASC Topic 820 applies whenever other standards require (or permit) assets or liabilities to be measured at fair value but does not expand the use of fair value in any new circumstances.
ASC Topic 820 defines fair value in terms of the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.
The price used to measure the fair value is not adjusted for transaction costs. Under ASC Topic 820, the fair value measurement also assumes that the transaction to sell an asset occurs in the principal market for the asset or, in the absence of a principal market, the most advantageous market for the asset. The principal market is the market in which the reporting entity would sell or transfer the asset with the greatest volume and level of activity for the asset. In determining the principal market for an asset or liability under ASC Topic 820, it is assumed that the reporting entity has access to the market as of the measurement date. If no market for the asset exists or if the reporting entity does not have access to the principal market, the reporting entity should use a hypothetical market.
Under ASC Topic 820, assets and liabilities carried at fair value in the balance sheets are classified among three levels based on the observability of the inputs used to determine fair value:
Level 1 — The valuation is based on quoted prices in active markets for identical instruments.
Level 2 — The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
Level 3 — The valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques, which incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument or valuations that require significant management judgment or estimation.
Fair value of financial instruments are determined based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of quoted prices and observable inputs and to minimize the use of unobservable inputs when measuring fair value. Various valuation techniques are utilized, depending on the nature of the financial instrument, including the use of market prices for identical or similar instruments, or discounted cash flow models. When possible, active and observable market data for identical or similar financial instruments are utilized. Alternatively, fair value is determined using assumptions that management believes a market participant would use in pricing the asset or liability.
Financial instruments consist principally of Cash and cash equivalents, Restricted cash, Borrower loans receivable, Loans held for sale, Accounts payable and accrued liabilities, and Notes.  The estimated fair values of cash and cash equivalents, restricted cash, accounts payable and accrued liabilities approximate their carrying values because of their short term nature.
The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
30-Sep-14		Level 1			Level 2			Level 3			Fair
											Value
Assets
Borrower loans receivable		$	-		$	-		$	253,068		$	253,068
Certificates of deposit & restricted cash			7,448			1,273			-			8,721
Loans held for sale			-			-			16,350			16,350
Total assets		$	7,448		$	1,273		$	269,418		$	278.139
Liabilities
Notes		$	-		$	-		$	252,911		$	252,911
31-Dec-13		Level 1			Level 2			Level 3			Fair
											Value
Assets
Borrower loans receivable		$	-		$	-		$	226,094		$	226,094
Certificates of deposit & restricted cash			11,028			1,271			-			12,299
Loans held for sale			-			-			3,917			3,917
Total assets		$	11,028		$	1,271		$	230,011		$	242,310
Liabilities
Notes		$	-		$	-		$	226,794		$	226,794
Internal Use Software and Website Development
Prosper Funding accounts for internal use software costs, including website development costs, in accordance with ASC Topic 350-40, Internal Use Software and ASC Topic 350-50, Website Development Costs. In accordance with ASC Topic 350-40 and 350-50, the costs to develop software for the website and other internal uses are capitalized when management has authorized and committed project funding, preliminary development efforts are successfully completed, and it is probable that the project will be completed and the software will be used as intended. Capitalized software development costs primarily include software licenses acquired, fees paid to outside consultants, and salaries and payroll related costs for employees directly involved in the development efforts.
Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed. Costs incurred for upgrades and enhancements that are considered to be probable to result in additional functionality are capitalized. Capitalized costs are included in property and equipment and amortized to expense using the straight-line method over their expected lives. Prosper Funding evaluates its software assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable.  Recoverability of software assets to be held and used is measured by a comparison of the carrying amount of the asset to the future net undiscounted cash flows expected to be generated by the asset.  If such software assets are considered to be impaired, the impairment to be recognized is the excess of the carrying amount over the fair value of the software asset.
Repurchase and Indemnification Obligation
Under the terms of the Notes, the Lender Registration Agreements between Prosper Funding and investor members who participate in the Note Channel, and the loan purchase agreements between Prosper Funding and investor members that participate in the Whole Loan Channel, Prosper Funding may, in certain circumstances, become obligated to repurchase a Note or Borrower Loan from an investor member or indemnify an investor member against loss on a Note. Generally, these circumstances include the occurrence of verifiable identity theft, the failure to properly follow loan listing or bidding protocols, or a violation of the applicable federal, state, or local lending laws. The indemnification and repurchase obligation is estimated based on historical experience. Prosper Funding accrues a provision for the repurchase and indemnification obligation when the Notes or Borrower Loans are issued. Indemnified or repurchased Notes and repurchased Borrower Loans associated with violations of federal, state, or local lending laws or verifiable identity theft are written off at the time of repurchase or at the time an indemnification payment is made.
Revenue Recognition
Revenue primarily results from fees earned. Fees include loan origination fees paid by borrowers and servicing fees paid by investors. We also have other smaller sources of revenue reported as other revenue this includes the gains on whole loan sales.
Administration Agreement License Fees
Prosper Funding primarily generates revenues through license fees it earns through an Administration Agreement with PMI.  The Administration Agreement contains a license granted by Prosper Funding to PMI that entitles PMI to use the platform for and in relation to: (i) PMI’s performance of its duties and obligations under the Administration Agreement relating to corporate administration, loan platform services, loan and note servicing and marketing, and (ii) PMI’s performance of its duties and obligations to WebBank in relation to loan origination and funding. The license fees are based on the number of listings that are posted to the platform.
Service Income
Investors in whole loans typically pay the Company a servicing fee which is currently generally set at 1% per annum of the outstanding principal balance of the corresponding loan prior to applying the current payment. The servicing fee compensates the Company for the costs we incur in servicing the related loan, including managing payments from borrowers, payments to investors and maintaining investors’ account portfolios. Prosper records servicing fees paid by note holders and borrower loan holders as a component of operating revenue when received. The amortization of servicing rights is also included in this line.
Interest Income on Borrower Loans Receivable and Interest Expense on Notes
Prosper Funding recognizes interest income on Borrower Loans funded through the Note Channel and interest expense on the corresponding Notes using the accrual method based on the stated interest rate to the extent Prosper Funding believes it to be collectable.
Cost of Services
Cost of Services includes costs that are directly related to the servicing of Borrower Loans such as fees from WebBank for processing loan payments.
Comprehensive Income
There is no comprehensive income (loss) other than the net income (loss) disclosed in the condensed consolidated statements of operations.
Recent Accounting Pronouncements
In May 2014, as part of its ongoing efforts to assist in the convergence of U.S. GAAP and International Financial Reporting Standards (“IFRS”), FASB issued ASU 2014-09, “Revenue from Contracts with Customers.” The new guidance sets forth a new five-step revenue recognition model which replaces the prior revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance that have historically existed in U.S. GAAP. The underlying principle of the new standard is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in the prior accounting guidance. The standard will be effective for the Company in the first quarter of fiscal 2017. Early adoption is not permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.
In August 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-15, "Presentation of Financial Statements - Going Concern (Subtopic 205-40); Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern," which requires management of a company to evaluate whether there is substantial doubt about the company's ability to continue as a going concern. This ASU is effective for the annual reporting period ending after December 15, 2016, and for interim and annual reporting periods thereafter, with early adoption permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.
3	Borrower Loans and Notes Held at Fair Value
As observable market prices are not available for the Borrower Loans and Notes funded through the Note Channel that Prosper Funding holds, or for similar assets and liabilities, Prosper Funding believes such Borrower Loans and Notes should be considered Level 3 financial instruments under ASC Topic 820.  In a hypothetical transaction as of the measurement date, Prosper Funding believes that differences in the principal marketplace in which such Borrower Loans are originated and the principal marketplace in which it might offer such Borrower Loans for sale may result in differences between the originated amount of the Borrower Loans and their fair value as of the transaction date.  For Borrower Loans funded through the Note Channel, the fair value is estimated using discounted cash flow methodologies based upon valuation assumptions including prepayment speeds, roll rates, recovery rates and discount rates based on the perceived credit risk within each credit grade.
The obligation to pay principal and interest on any series of Notes is equal to the loan payments, if any, that are received on the corresponding Borrower Loan, net of its servicing fee.  The fair value election for Notes and Borrower Loans funded through the Note Channel allows both the assets and the related liabilities to receive similar accounting treatment for expected losses, which is consistent with the subsequent cash flows to investor members that are dependent upon borrower payments.  As such, the fair value of the Notes is approximately equal to the fair value of the Borrower Loans funded through the Note Channel, adjusted for the servicing fee and the timing of borrower payments subsequently disbursed to Note holders.  Any unrealized gains or losses on such Borrower Loans and Notes for which the fair value option has been elected is recorded as a separate line item in the statement of operations.  The effective interest rate associated with a series of Notes is less than the interest rate earned on the corresponding Borrower Loan due to the servicing fee.  See further discussion in this note for a roll-forward and further discussion of the significant assumptions used to value Borrower Loans and Notes funded through the Note Channel.
The fair value of the Borrower Loans and Notes funded through the Note Channel is estimated using discounted cash flow methodologies based upon a set of valuation assumptions. The main assumptions used to value such Borrower Loans and Notes include prepayment rates derived from historical prepayment rates for each credit grade, default rates derived from historical performance, recovery rates and discount rates applied to each credit grade based on the perceived credit risk of each credit grade. The obligation to pay principal and interest on any series of Notes is equal to the loan payments, if any, received on the corresponding Borrower Loan, net of the servicing fee.  As such, the fair value of the Notes is approximately equal to the fair value of the Borrower Loans funded through the Note Channel, adjusted for the servicing fee and the timing of borrower payments subsequently disbursed to the Note holders.  The effective interest rate associated with a series of Notes will be less than the interest rate earned on the corresponding Borrower Loan due to the 1.0% servicing fee.
At September 30, 2014 and December 31, 2013, borrower loans, notes and loans held for sale (in thousands) were:
		Borrower Loans						Notes						Loans Held for Sale
		30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13
Aggregate principal balance outstanding		$	256,026		$	225,953		$	(258,947	)	$	(229,271	)	$	16,360		$	3,915
Fair value adjustments			(2,958	)		141			6,036			2,477			(10	)		2
Fair value		$	253,068		$	226,094		$	(252,911	)	$	(226,794	)	$	16,350		$	3,917
Key economic assumptions and the sensitivity of the current fair value to immediate adverse changes in those assumptions at September 30, 2014 for Borrower Loans and Notes funded through the Note Channel are presented in the following table (in thousands):
		Borrower Loans			Notes
Discount rate assumption:			9.36	%*		9.36	%*
Resulting fair value from:
100 basis point increase		$	247,738		$	244,736
200 basis point increase			244,715			241,743
Resulting fair value from:
100 basis point decrease		$	253,975		$	250,912
200 basis point decrease			257,188			254,085
Default rate assumption:			7.4	%*		7.4	%*
Resulting fair value from:
10% higher default rates		$	247,275		$	244,275
20% higher default rates			244,418			241,452
Resulting fair value from:
10% lower default rates		$	253,729		$	250,663
20% lower default rates			256,584			253,493
* Represents weighted average assumptions considering all credit grades.
The changes in Level 3 assets measured at fair value on a recurring basis are as follows (in thousands):
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower Loans			Notes			Loans			Total
								Held for
								Sale
Balance at January 1, 2013		$	-		$	-		$	-		$	-
Assets transferred on February 1, 2013			170,344			(170,574	)		175			(55	)
Originations			189,313			(108,527	)		71			80,857
Principal repayments			(59,126	)		58,441			(106	)		(791	)
Borrower loans sold to third parties			(80,786	)		-			-			(80,786	)
Change in fair value on borrower loans and notes			(15,614	)		16,195			-			581
Change in fair value of loans held for sale			-			-			(3	)		(3	)
Balance at September 30, 2013		$	204,131		$	(204,465	)	$	137		$	(197	)
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower Loans			Notes			Loans			Total
								Held for
								Sale
Balance at January 1, 2014		$	226,094		$	(226,794	)	$	3,917		$	3,217
Originations			823,841			(130,828	)		229,679			922,692
Principal repayments and credit losses			(88,944	)		89,336			(899	)		(507	)
Borrower loans sold to third parties			(693,007	)		-			(216,336	)		(909,343	)
Change in fair value on borrower loans and notes			(14,916	)		15,375			-			459
Change in fair value of loans held for sale			-			-			(11	)		(11	)
Balance at September 30, 2014		$	253,068		$	(252,911	)	$	16,350		$	16,507
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
Balance July 1, 2013		$	187,124		$	(187,489	)	$	153		$	(212	)
Originations			94,098			(43,475	)		25			50,648
Principal repayments			(22,778	)		22,718			(41	)		(101	)
Borrower loans sold to third parties			(50,623	)		-			-			(50,623	)
Change in fair value on borrower loans and notes			(3,690	)		3,781			-			91
Balance at September 30, 2013		$	204,131		$	(204,465	)	$	137		$	(197	)
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
Balance July 1, 2014		$	246,203		$	(246,511	)	$	9,543		$	9,235
Originations			372,027			(44,115	)		117,752			445,664
Principal repayments			(31,226	)		31,620			(586	)		(192	)
Borrower loans sold to third parties			(327,909	)		-			(110,350	)		(438,259	)
Change in fair value on borrower loans and notes			(6,027	)		6,095			-			68
Change in fair value of loans held for sale			-			-			(9	)		(9	)
Balance at September 30, 2014		$	253,068		$	(252,911	)	$	16,350		$	16,507
The changes in fair value would directly impact the change in fair value on Borrower Loans, Loans held for sale, and Notes in the condensed consolidated statements of operations.  The majority of the fair value adjustments included in earnings is attributable to changes in estimated instrument-specific future credit losses.
Due to the recent origination of the Borrower Loans and Notes funded through the Note Channel, the change in fair value attributable to instrument-specific credit risk is immaterial. Of all Borrower Loans originated from July 13, 2009 to September 30, 2014, 282 Borrower Loans were 90 days or more delinquent, which related to an aggregate principal amount of $1.5 million and a fair value of $0.14 million as of September 30, 2014.
4	Loan Servicing Note:
The Company initially records servicing assets and liabilities at their estimated fair values when the Company sells whole loans to unrelated third-party whole loan buyers.   The initial fair value of such servicing assets or liabilities is amortized in proportion to and over the period of estimated servicing income or loss.
Fair value
Discounted cash flow – Discounted cash flow valuation techniques generally consist of developing an estimate of future cash flows that are expected to occur over the life of a financial instrument and then discounting those cash flows at a rate of return that results in the fair value amount.
Significant unobservable inputs presented in the table below are those that the Company considers significant to the estimated fair values of the Level 3 servicing assets and liabilities. The Company considers unobservable inputs to be significant, if by their exclusion, the estimated fair value of the Level 3 asset or liability would be impacted by a significant percentage change, or based on qualitative factors such as the nature of the instrument and significance of the unobservable inputs relative to other inputs used within the valuation. The following is a description of the significant unobservable inputs provided in the table.
Market servicing rate – The Company estimates adequate servicing compensation rates of what a market participant would earn to service the loans that the Company sells to third parties. This rate is calculated on the loan balance on a per annum basis.  The Company estimated these market servicing rates based on observable market rates for other loan types in the industry, adjusted for the unique loan attributes that are present in the specific loans that the Company sells and services and information from a backup service provider.
Discount rate – The discount rate is a rate of return used to discount future expected cash flows to arrive at a present value, which represents the fair value of the loan servicing rights. The discount rates for the projected net cash flows of loan servicing rights are our estimates of the rates of return that investors in servicing rights for unsecured consumer credit obligations would require for the various credit grades of the underlying loans. Discount rates for servicing rights on existing loans are adjusted to reflect the time value of money. A risk premium component is implicitly included in the discount rates to reflect the amount of compensation market participants require due to the uncertainty inherent in the instruments’ cash flows resulting from risks such as credit and liquidity.
Default Rate – The default rate presented is an annualized, average estimate considering all loan categories, and represents an aggregate of conditional default rate curves for each credit grade or loan category. Each point on a particular loan category’s curve represents the percentage of principal expected to default per period based on the term and age of the underlying loans. The assumption regarding defaults directly reduces servicing revenues because the amount of servicing revenues received is based on the amount of outstanding principal each period. In addition, defaults also reduce the expected terms of the loans, which are used to project future servicing revenues.
Significant Unobservable Inputs
The following table presents quantitative information about the significant unobservable inputs used for our servicing asset/liability fair value measurements at September 30, 2014 and December 31, 2013:
		Weighted Average
Unobservable Input		30-Sep-14			31-Dec-13
Discount rate			9.6	%**		9.9	%**
Default rate			5.5	%**		5.6	%**
Market servicing rate			0.65	%		0.65	%
** Represents weighted average or aggregate assumptions considering all credit grades.
Servicing asset/liability activity:
The following tables present additional information about Level 3 servicing assets and liabilities being amortized for the three and nine months ended September 30, 2014 (in thousands).  There were no servicing assets or liabilities recorded at September 30, 2013.
		Three Months Ended
		30-Sep-14
		Servicing			Servicing
		Assets			Liabilities
Amortized cost at June 30, 2014		$	770		$	693
Additions			772			306
Less: Amortization			(126	)		(114	)
Amortized cost at September 30,2014		$	1,416		$	885
		Nine Months Ended
		30-Sep-14
		Servicing			Servicing
		Assets			Liabilities
Amortized cost at December 31, 2013		$	241		$	314
Additions			1,408			804
Less: Amortization			(233	)		(233	)
Amortized cost at September 30, 2014		$	1,416		$	885
5	Loans Held for Sale
Loans held for sale on the condensed consolidated balance sheets as of September 30, 2014 and December 31, 2013, was $16.4 million and $3.9 million, respectively. For the nine months ended September 30, 2014 and 2013, a total of $229.7 million and $0.07 million of Borrower Loans originated through the platform as Loans held for sale. For the nine months ended September 30, 2014 and 2013, $216.3 million and $0 of these Borrower Loans were sold to an unrelated third party through the Whole Loan Channel. When a Borrower Loan has been funded by Prosper Funding in whole, or in part, the portion of the borrower’s monthly loan payment that corresponds to the percentage of the Borrower Loan that is funded is retained. In these cases, interest income is recorded on these Borrower Loans.
6	Repurchase and Indemnification Obligation
For the three months ended September 30, 2014 and 2013, the provision for repurchase and indemnification obligation was $0.03 million and $0.01 million, respectively. For the nine months ended September 30, 2014 and 2013, the provision for repurchase and indemnification obligation was $0.14 million and $0.02 million, respectively.   This expense is included in the Cost of Services line in the Statement of Operations.  The balance of the Repurchase and indemnification obligation as of September 30, 2014 and December 31, 2013, was $0.16 million and $0.03 million, respectively.
7	Income Taxes
Prosper Funding incurred no income tax provision for the three months ended September 30, 2014 and 2013.  Prosper Funding is a US disregarded entity and the income and loss is included in the return of its parent, PMI.  Since PMI is in a loss position, not currently subject to income taxes, and has fully reserved its deferred tax asset, the net effective tax rate for Prosper Funding is 0%.
8	Prior Period Adjustments
Subsequent to the issuance of our condensed consolidated financial statements for the period ended June 30, 2014, Prosper Funding discovered an error in its estimates of net service income which resulted in an overstatement of net loan servicing rights as of December 31, 2013 and an overstatement of the gain recognized on the sale of loans in the fourth quarter of 2013 by approximately $223.  Furthermore, Prosper Funding inappropriately netted loan servicing liabilities against its loan servicing assets.  Additionally, a net servicing liability of $6 was distributed to our parent, which was previously not recorded.   This resulted in a $217 understatement of the loan servicing assets and liabilities, which were originally included in “Borrower Loans Receivable at Fair Value” for $144.  Prosper Funding corrected these errors by reclassifying the adjusted gross servicing assets of $241 to “Prepaid and Other Assets and recognized the servicing liabilities of $314 in “Accounts Payable and Other Liabilities.
Additionally, Prosper Funding discovered the following classification errors within its Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2013:
	·	Changes in Restricted Cash were inappropriately classified as changes in cash flows from operating activities rather than changes in cash flows from investing activities.
	·	Cash flows from the purchase and sale of Loans held for sale was inappropriately classified within cash flows from investing activities rather than cash flows from operating activities.
	·	A portion of the change in fair value of Borrower Loans and Notes was inappropriately reflected as a cash flow from investing and financing activities, respectively, rather than an adjustment to reconcile net income to net cash used in operating activities.
	·	The proceeds from sale of borrower loans held at fair value were netted against origination of borrower loans at fair value.
The aggregate impact of these errors were an understatement of cash flows from operating activities of $1,004; an overstatement of cash flows from investing activities of $12,715; and an $11,711 understatement of cash flows from financing activities for the nine months ended September 30, 2013.
Prosper Funding evaluated these errors and determined that they were immaterial to the previously issued financial statements and therefore, amendment of previously filed reports was not required. However, in order to provide consistency in the consolidated financial statements, corrections for these immaterial amounts are reflected in the Prosper Funding’s accompanying consolidated balance sheet as of December 31, 2013 and Condensed Consolidated Statement of Cash Flows for the nine months ended September 30, 2013. The impact of the corrections on specific line items in the Consolidated Balance Sheet as of December 31, 2013 and the Condensed Consolidated Cash Flows for the nine months ended September 30, 2013 are presented below (in thousands):
Condensed Consolidated Statements of Cash Flows - Nine months ended September 30, 2013
		As previously			Adjustments			As corrected
		reported
Change in fair value of Borrower Loans			(4,484	)		(11,711	)		(16,195	)
Change in fair value of Notes			3,903			11,711			15,614
Restricted cash			(969	)		969			–
Loans held for sale at fair value			–			35			35
Net cash provided by (used in) operating activities			1,794			1,004			2,798
Origination of borrower loans held for sale			(108,527	)		(80,788	)		189,313	)
Proceeds from sale of borrowed loans held at fair value			-			80,786			80,786
Repayment of Borrower Loans held at fair value			70,837			(11,711	)		59,126
Repayment of loans held for investment at fair value			106			(106	)		–
Origination of loans held for investment at fair value			(71	)		71			–
Change in restricted cash			–			(969	)		(969	)
Net cash used in investing activities			(38,882	)		(12,715	)		(51,597	)
Payment of Notes held at fair value			(70,152	)		11,711			(58,441	)
Net cash provided by financing activities			40,250			11,711			51,961
Condensed Consolidated Balance Sheet - December 31, 2013
		As previously			Adjustments			As corrected
		reported
Borrower Loans Receivable at Fair Value			226,238			(144	)		226,094
Other Assets			14			241			255
Total Assets			250,237			97			250,334
Accounts payable and accrued liabilities			3,712			314			4,026
Total Liabilities			230,743			314			231,057
Member's Equity			16,076			6			16,082
Retained Earnings (Accumulated Deficit)			3,418			(223	)		3,195
Total Member's Equity			19,494			(217	)		19,277
Total Liabilities and Member's Equity			250,237			97			250,334

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2014
Summary of Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The unaudited interim condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“US GAAP”) and disclosure requirements for interim financial information and the requirements of Rule 8-03 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for complete financial statements. The unaudited interim condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2013. The balance sheet at December 31, 2013 has been derived from the audited financial statements at that date. Management believes these unaudited interim condensed consolidated financial statements reflect all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period.
	The accompanying interim condensed consolidated financial statements include the accounts of PMI and its wholly-owned subsidiary, Prosper Funding. All intercompany balances have been eliminated in consolidation.
Use of Estimates	'
	Use of Estimates
	The preparation of the interim condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures, including contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. These estimates, judgments and assumptions include but are not limited to the following: valuation of Borrower Loans and associated Notes, Borrower Loans held for sale, valuation of servicing rights, valuation allowance on deferred tax assets, repurchase and indemnification obligation, stock-based compensation expense, and contingent liabilities. Actual results could differ from those estimates.
Certain Risks and Concentrations	'
	Certain Risks and Concentrations
	In the normal course of its business, the Company encounters two significant types of risk: credit and regulatory. Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, and restricted cash. The Company places cash, cash equivalents, and restricted cash with high-quality financial institutions and is exposed to credit risk in the event of default by these institutions to the extent the amount recorded on the balance sheet exceeds federally insured amounts.  The Company performs periodic evaluations of the relative credit standing of these financial institutions and has not sustained any credit losses from instruments held at these financial institutions.
	To the extent that Borrower Loan payments are not made, servicing income will be reduced.  A group of Notes corresponding to a particular Borrower Loan is wholly dependent on the repayment of such Borrower Loan. As a result, the Company does not bear the risk on such Borrower Loan.
	The Company is subject to various regulatory requirements. The failure to appropriately identify and address these regulatory requirements could result in certain discretionary actions by regulators that could have a material effect on the Company's consolidated financial position and results of operations (See Note 11—Commitments and Contingencies—Securities Law Compliance).
Reclassifications	'
	Reclassifications
	During the nine months ended September 30, 2014, the Company changed the presentation of its revenues in the statement of operations.   A new line called “Servicing Fees” was created and the servicing fees related to whole loans that were previously included in interest income were reclassified to this new line.   Furthermore, the “Rebates and Promotions” line was removed, with the amounts in that line reclassified to the “Servicing Fees” or “Origination Fees” lines based on the underlying transactions.  Also, the “Change in Fair Value of Borrower Loans, Loans Held for Sale and Notes, Net” was moved into the total revenues subtotal.     Lastly, the subtotals were realigned to reflect the new presentation.   Management believes these changes make the income statement more useful for the readers of the financial statements and comparable with the Company’s competitors.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	All highly liquid investments with stated maturities of three months or less from date of purchase are classified as cash equivalents. Cash equivalents are recorded at cost plus accrued interest, which approximates fair value. Cash and cash equivalents include various unrestricted deposits with highly rated financial institutions in checking, money market and short-term certificate of deposit accounts.
Restricted Cash	'
	Restricted Cash
	Restricted cash consists primarily of cash deposits held as collateral as required for long term leases, loan funding and servicing activities.
Borrower Loans and Notes	'
	Borrower Loans and Notes
	Through the Note Channel, the Company issues Notes and purchases Borrower Loans from WebBank, and holds the Borrower Loans until maturity.  The obligation to repay a series of Notes funded through the Note Channel is conditioned upon the repayment of the associated Borrower Loan.  Borrower Loans and Notes funded through the Note Channel are carried on the Company’s condensed consolidated balance sheets as assets and liabilities, respectively.  The Company has adopted the provisions of ASC Topic 825, Financial Instruments.  ASC Topic 825 permits companies to choose to measure certain financial instruments and certain other items at fair value on an instrument-by-instrument basis with unrealized gains and losses on items for which the fair value option has been elected reported in earnings.  Management believes that the fair value option is more meaningful for the reader of the financial statements and it allows both the Borrower Loans and Notes to be valued using the same methodology.  The fair value election, with respect to an item, may not be revoked once an election is made.  A specific allowance account is not recorded relating to the Borrower Loans in which the Company has elected the fair value option, but rather the Company estimates the fair value of such Borrower Loans and Notes using discounted cash flow methodologies adjusted for the expected payment, loss and recovery rates.
Servicing Asset/Liability	'
	Servicing Asset/Liability
	The Company records servicing assets and liabilities at their estimated fair values when the Company sells Borrower Loans to unrelated third-party buyers. The gain or loss on a loan sale is recorded in “Other Revenue” while the fair value of the servicing rights, which is based on the degree to which the contractual loan servicing fee is above or below an estimated market loan servicing fee is recorded in servicing assets or liabilities. Servicing assets and liabilities are recorded in “Prepaid and Other Assets” and “Accrued Expenses and Other Liabilities,” respectively, on the condensed consolidated balance sheets. The initial fair value of servicing assets or liabilities are amortized in proportion to and over the period of estimated servicing income or loss and are reported in “Servicing Fees” on the condensed consolidated statement of operations.
	The Company uses a discounted cash flow model to estimate the fair value of the loan servicing assets or liabilities which considers the contractual projected servicing fee revenue that the Company earns on the loans, estimated market servicing fees to service such loans, prepayment rates, default rates and the current principal balances of the loans.
	The Company periodically assesses servicing assets accounted for using the amortization method for impairment. Impairment occurs when the current fair value of the servicing assets falls below the asset’s carrying value (carrying value is the amortized cost reduced by any related valuation allowance). If servicing assets are impaired, the impairment is recognized in current-period earnings and the carrying value of the assets is adjusted through a valuation allowance. If the value of impaired servicing assets subsequently increases, the Company recognizes the increase in value in current-period earnings and adjusts the carrying value of the servicing assets through a reduction in the valuation allowance to adjust the carrying value only to the extent of the valuation allowance.
Loans Held for Sale	'
	Loans Held for Sale
	Loans held for sale are primarily comprised of Borrower Loans held for short durations and are recorded at fair value. The fair value is estimated using discounted cash flow methodologies based upon a set of valuation assumptions similar to those of other Borrower Loans, which are set forth in Note 2— Fair Value Measurement.
Fair Value Measurement	'
	Fair Value Measurement
	The Company adopted ASC Topic 820, Fair Value Measurements and Disclosures, on January 1, 2008, which provides a framework for measuring the fair value of assets and liabilities. ASC Topic 820 also provides guidance regarding a fair value hierarchy, which prioritizes information used to measure fair value and the effect of fair value measurements on earnings and provides for enhanced disclosures determined by the level within the hierarchy of information used in the valuation. ASC Topic 820 applies whenever other standards require (or permit) assets or liabilities to be measured at fair value but does not expand the use of fair value in any new circumstances.
	ASC Topic 820 defines fair value in terms of the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.
	The price used to measure the fair value is not adjusted for transaction costs. Under ASC Topic 820, the fair value measurement also assumes that the transaction to sell an asset occurs in the principal market for the asset or, in the absence of a principal market, the most advantageous market for the asset. The principal market is the market in which the reporting entity would sell or transfer the asset with the greatest volume and level of activity for the asset. In determining the principal market for an asset or liability under ASC Topic 820, it is assumed that the reporting entity has access to the market as of the measurement date. If no market for the asset exists or if the reporting entity does not have access to the principal market, the reporting entity should use a hypothetical market.
	Under ASC Topic 820, assets and liabilities carried at fair value on the balance sheets are classified among three levels based on the observability of the inputs used to determine fair value:
	Level 1 — The valuation is based on quoted prices in active markets for identical instruments.
	Level 2 — The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
	Level 3 — The valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques, which incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument or valuations that require significant management judgment or estimation.
	Fair value of financial instruments are determined based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of quoted prices and observable inputs and to minimize the use of unobservable inputs when measuring fair value. Various valuation techniques are utilized, depending on the nature of the financial instrument, including the use of market prices for identical or similar instruments, or discounted cash flow models. When possible, active and observable market data for identical or similar financial instruments are utilized. Alternatively, fair value is determined using assumptions that management believes a market participant would use in pricing the asset or liability.
	Financial instruments consist principally of Cash and cash equivalents, Restricted cash, Borrower loans receivable, Loans held for sale, Accounts payable and accrued liabilities, and Notes.  The estimated fair values of Cash and cash equivalents, Restricted cash, Accounts payable and accrued liabilities approximate their carrying values because of their short term nature.
	The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
	30-Sep-14	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	253,068	$	253,068
	Restricted cash		15,577		1,374		-		16,951
	Loans held for sale		-		-		16,350		16,350
	Total assets	$	15,577	$	1,374	$	269,418	$	286,369
	Liabilities
	Notes	$	-	$	-	$	252,911	$	252,911
	31-Dec-13	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	226,094	$	226,094
	Restricted cash		14,032		1,441		-		15,473
	Loans held for sale		-		-		3,917		3,917
	Total assets	$	14,032	$	1,441	$	230,011	$	245,484
	Liabilities
	Notes	$	-	$	-	$	226,794	$	226,794
Property and Equipment	'
	Property and Equipment
	Property and equipment consists of computer equipment, office furniture and equipment, and software purchased or developed for internal use. Property and equipment are stated at cost, less accumulated depreciation and amortization, and are computed using the straight-line method based upon estimated useful lives of the assets, which range from three to seven years, commencing once the asset is placed in service. Expenditures are capitalized for replacements and betterments and recognized as expense for maintenance and repairs as incurred.
Internal Use Software and Website Development	'
	Internal Use Software and Website Development
	Internal use software costs and website development costs are accounted for, in accordance with ASC Topic 350-40, Internal Use Software, and ASC Topic 350-50, Website Development Costs. In accordance with ASC Topic 350-40 and 350-50, the costs to develop software for the website and other internal uses are capitalized when management has authorized and committed project funding, preliminary development efforts are successfully completed, and it is probable that the project will be completed and the software will be used as intended. Capitalized software development costs primarily include software licenses acquired, fees paid to outside consultants, and salaries and payroll related costs for employees directly involved in the development efforts.
	Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed. Costs incurred for upgrades and enhancements that are considered to be probable to result in additional functionality are capitalized. Capitalized costs are included in property and equipment and amortized to expense using the straight-line method over their expected lives. Software assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable.  Recoverability of software assets to be held and used is measured by a comparison of the carrying amount of the asset to the future net undiscounted cash flows expected to be generated by the asset.  If such software assets are considered to be impaired, the impairment to be recognized is the excess of the carrying amount over the fair value of the software asset.
Repurchase Liability for Unvested Restricted Stock Awards	'
	Repurchase Liability for Unvested Restricted Stock Awards
	Under the terms of the Company’s stock option plan certain options issued to employees can be exercised before they have vested by the employee.  When this occurs the Company records a liability for the unvested portion of the exercise.  If the employee’s employment is terminated before all of the shares become vested the Company may repurchase the unvested shares at the original exercise price. The liability is released into Equity as the shares become vested.   The related shares are considered to be restricted shares and are excluded from the basic earnings per share calculation.
Repurchase and Indemnification Obligation	'
	Repurchase and Indemnification Obligation
	Under the terms of the Notes, the Lender Registration Agreements between the Company and investor members who participate in the Note Channel, and the loan purchase agreements between the Company and investor members that participate in the Whole Loan Channel, the Company may, in certain circumstances, become obligated to repurchase a Note or Borrower Loan from an investor member or indemnify an investor member against loss on a Note. Generally, these circumstances include the occurrence of verifiable identity theft, the failure to properly follow loan listing or bidding protocols, or a violation of the applicable federal, state, or local lending laws. The fair value of the indemnification and repurchase obligation is estimated based on historical experience. The Company recognizes a liability for the repurchase and indemnification obligation when the Notes or Borrower Loans are issued. Indemnified or repurchased Notes and repurchased Borrower Loans associated with violations of federal, state, or local lending laws or verifiable identity theft are written off at the time of repurchase or at the time an indemnification payment is made.
Revenue Recognition	'
	Revenue Recognition
	Revenue primarily results from fees earned. Fees include loan origination fees paid by borrowers and servicing fees paid by investors. We also have other smaller sources of revenue reported as other revenue, this includes referral fees and gains on whole loan sales.
	Origination Fees
	The Company earns an origination fee upon the successful closing of all Borrower Loans issued through the platform. WebBank charges the origination fee and the Company receives payments from WebBank equal to the origination fee as compensation for its loan origination activities on behalf of WebBank. The borrower receives an amount equal to the loan amount net of the loan origination fee. The loan origination fee is determined by the term and credit grade of the loan, and ranges from 1.00% to 5.00% of the original principal amount. Since the Company accounts for Borrower Loans and Loans held for sale at fair value, origination fees are not deferred but are recognized at origination of the Borrower Loan, and direct costs to originate Borrower Loans are recorded as expenses as incurred.
	Service Fees
	Investors in whole loans typically pay the Company a servicing fee which is currently generally set at 1% per annum of the outstanding principal balance of the corresponding loan prior to applying the current payment. The servicing fee compensates the Company for the costs we incur in servicing the related loan, including managing payments from borrowers, payments to investors and maintaining investors’ account portfolios. Prosper records servicing fees paid by note holders and borrower loan holders as a component of operating revenue when received. The amortization of servicing rights is also included in this line.
	Interest Income on Borrower Loans Receivable and Interest Expense on Notes
	The Company recognizes interest income on Borrower Loans funded through the Note Channel and interest expense on the corresponding Notes using the accrual method based on the stated interest rate to the extent the Company believes it to be collectable.
Cost of Services	'
	Cost of Services
	Cost of Services includes costs that are directly related to the servicing of Borrower Loans such as fees from WebBank for processing loan payments.
Marketing and Advertising Expense	'
	Marketing and Advertising Expense
	Under the provisions of ASC Topic 720, Other Expenses, the costs of advertising are expensed as incurred. Marketing and advertising costs were $25.7 million and $10.1 million for the nine months ended September 30, 2014 and 2013, respectively.
Stock-Based Compensation	'
	Stock-Based Compensation
	Stock-based compensation for employees is accounted for using fair-value-based accounting in accordance with ASC Topic 718, Stock Compensation.  ASC Topic 718 requires companies to estimate the fair value of stock-based awards on the date of grant using an option-pricing model. The stock-based compensation related to awards that are expected to vest is amortized using the straight line method over the vesting term of the stock-based award, which is generally four years. Expected forfeitures of unvested options are estimated at the time of grant such that expense is recorded only for those stock-based awards that are expected to vest.
	Options have been granted to purchase shares of common stock to nonemployees in exchange for services performed, which the Company accounts for in accordance with the provisions of ASC Topic 505-50, Equity-Based Payments to Non-Employees. Because ASC Topic 505 requires that nonemployee equity awards be recorded at their fair value, the Black-Scholes model is used to estimate the fair value of options granted to nonemployees at each vesting date until performance is complete to determine the appropriate charge for the services provided.
Net Loss Per Share	'
	Net Loss Per Share
	Net loss per share is computed in accordance with ASC Topic 260, Earnings Per Share. Under ASC Topic 260, basic net loss per share is computed by dividing net loss per share available to common shareholders by the weighted average number of common shares outstanding for the period and excludes the effects of any potentially dilutive securities. Diluted earnings per share, if presented, would include the dilution that would occur upon the exercise or conversion of all potentially dilutive securities into common stock using the “treasury stock” and/or “if converted” methods as applicable. At September 30, 2014, there were outstanding convertible preferred stock, warrants, restricted stock and options convertible into 30,699,957, 220,882, 4,768,109 and 4,540,101 common shares, respectively, which may dilute future earnings per share. At September 30, 2013, there were outstanding convertible preferred stock, warrants, restricted stock and options convertible into 22,156,922, 218,797, 6,461,797 and 979,483 common shares, respectively, which may dilute future earnings per share. The weighted average number of shares and the loss per share reflect a 10-for-1 reverse stock split effected by the Company on October 29, 2013. By reporting a net loss available to common stockholders for the three and nine months ended September 30, 2014 and 2013, potentially dilutive securities are excluded from the computation of net loss per share, as their effect would be antidilutive.
Income Taxes	'
	Income Taxes
	The asset and liability method is used to account for income taxes as codified in ASC Topic 740, Income Taxes. Under this method, deferred income tax assets and liabilities are based on the differences between the financial statements and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized.
	Under ASC Topic 740, the Company’s policy to include interest and penalties related to gross unrecognized tax benefits within its provision for income taxes did not change.  U.S. Federal, California and other state income tax returns are filed.  The Company is currently not undergoing any income tax examinations. Due to the net operating loss, generally all tax years remain open.
Comprehensive Income	'
	Comprehensive Income
	There is no comprehensive income (loss) other than the net income (loss) disclosed in the condensed consolidated statements of operations.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In May 2014, as part of its ongoing efforts to assist in the convergence of U.S. GAAP and International Financial Reporting Standards (“IFRS”), FASB issued ASU 2014-09, “Revenue from Contracts with Customers.” The new guidance sets forth a new five-step revenue recognition model which replaces the prior revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance that have historically existed in U.S. GAAP. The underlying principle of the new standard is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in the prior accounting guidance. The standard will be effective for the Company in the first quarter of fiscal 2017. Early adoption is not permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.
	In August 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-15, "Presentation of Financial Statements - Going Concern (Subtopic 205-40); Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern," which requires management of a company to evaluate whether there is substantial doubt about the company's ability to continue as a going concern. This ASU is effective for the annual reporting period ending after December 15, 2016, and for interim and annual reporting periods thereafter, with early adoption permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.

Schedule_I_Prosper_Funding_LLC1

Schedule I, Prosper Funding LLC (Policies)	9 Months Ended
	Sep. 30, 2014
Summary of Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The unaudited interim condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“US GAAP”) and disclosure requirements for interim financial information and the requirements of Rule 8-03 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for complete financial statements. The unaudited interim condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2013. The balance sheet at December 31, 2013 has been derived from the audited financial statements at that date. Management believes these unaudited interim condensed consolidated financial statements reflect all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period.
	The accompanying interim condensed consolidated financial statements include the accounts of PMI and its wholly-owned subsidiary, Prosper Funding. All intercompany balances have been eliminated in consolidation.
Reclassifications	'
	Reclassifications
	During the nine months ended September 30, 2014, the Company changed the presentation of its revenues in the statement of operations.   A new line called “Servicing Fees” was created and the servicing fees related to whole loans that were previously included in interest income were reclassified to this new line.   Furthermore, the “Rebates and Promotions” line was removed, with the amounts in that line reclassified to the “Servicing Fees” or “Origination Fees” lines based on the underlying transactions.  Also, the “Change in Fair Value of Borrower Loans, Loans Held for Sale and Notes, Net” was moved into the total revenues subtotal.     Lastly, the subtotals were realigned to reflect the new presentation.   Management believes these changes make the income statement more useful for the readers of the financial statements and comparable with the Company’s competitors.
Use of Estimates	'
	Use of Estimates
	The preparation of the interim condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures, including contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. These estimates, judgments and assumptions include but are not limited to the following: valuation of Borrower Loans and associated Notes, Borrower Loans held for sale, valuation of servicing rights, valuation allowance on deferred tax assets, repurchase and indemnification obligation, stock-based compensation expense, and contingent liabilities. Actual results could differ from those estimates.
Certain Risks and Concentrations	'
	Certain Risks and Concentrations
	In the normal course of its business, the Company encounters two significant types of risk: credit and regulatory. Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, and restricted cash. The Company places cash, cash equivalents, and restricted cash with high-quality financial institutions and is exposed to credit risk in the event of default by these institutions to the extent the amount recorded on the balance sheet exceeds federally insured amounts.  The Company performs periodic evaluations of the relative credit standing of these financial institutions and has not sustained any credit losses from instruments held at these financial institutions.
	To the extent that Borrower Loan payments are not made, servicing income will be reduced.  A group of Notes corresponding to a particular Borrower Loan is wholly dependent on the repayment of such Borrower Loan. As a result, the Company does not bear the risk on such Borrower Loan.
	The Company is subject to various regulatory requirements. The failure to appropriately identify and address these regulatory requirements could result in certain discretionary actions by regulators that could have a material effect on the Company's consolidated financial position and results of operations (See Note 11—Commitments and Contingencies—Securities Law Compliance).
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	All highly liquid investments with stated maturities of three months or less from date of purchase are classified as cash equivalents. Cash equivalents are recorded at cost plus accrued interest, which approximates fair value. Cash and cash equivalents include various unrestricted deposits with highly rated financial institutions in checking, money market and short-term certificate of deposit accounts.
Restricted Cash	'
	Restricted Cash
	Restricted cash consists primarily of cash deposits held as collateral as required for long term leases, loan funding and servicing activities.
Borrower Loans and Notes	'
	Borrower Loans and Notes
	Through the Note Channel, the Company issues Notes and purchases Borrower Loans from WebBank, and holds the Borrower Loans until maturity.  The obligation to repay a series of Notes funded through the Note Channel is conditioned upon the repayment of the associated Borrower Loan.  Borrower Loans and Notes funded through the Note Channel are carried on the Company’s condensed consolidated balance sheets as assets and liabilities, respectively.  The Company has adopted the provisions of ASC Topic 825, Financial Instruments.  ASC Topic 825 permits companies to choose to measure certain financial instruments and certain other items at fair value on an instrument-by-instrument basis with unrealized gains and losses on items for which the fair value option has been elected reported in earnings.  Management believes that the fair value option is more meaningful for the reader of the financial statements and it allows both the Borrower Loans and Notes to be valued using the same methodology.  The fair value election, with respect to an item, may not be revoked once an election is made.  A specific allowance account is not recorded relating to the Borrower Loans in which the Company has elected the fair value option, but rather the Company estimates the fair value of such Borrower Loans and Notes using discounted cash flow methodologies adjusted for the expected payment, loss and recovery rates.
Servicing Asset/Liability	'
	Servicing Asset/Liability
	The Company records servicing assets and liabilities at their estimated fair values when the Company sells Borrower Loans to unrelated third-party buyers. The gain or loss on a loan sale is recorded in “Other Revenue” while the fair value of the servicing rights, which is based on the degree to which the contractual loan servicing fee is above or below an estimated market loan servicing fee is recorded in servicing assets or liabilities. Servicing assets and liabilities are recorded in “Prepaid and Other Assets” and “Accrued Expenses and Other Liabilities,” respectively, on the condensed consolidated balance sheets. The initial fair value of servicing assets or liabilities are amortized in proportion to and over the period of estimated servicing income or loss and are reported in “Servicing Fees” on the condensed consolidated statement of operations.
	The Company uses a discounted cash flow model to estimate the fair value of the loan servicing assets or liabilities which considers the contractual projected servicing fee revenue that the Company earns on the loans, estimated market servicing fees to service such loans, prepayment rates, default rates and the current principal balances of the loans.
	The Company periodically assesses servicing assets accounted for using the amortization method for impairment. Impairment occurs when the current fair value of the servicing assets falls below the asset’s carrying value (carrying value is the amortized cost reduced by any related valuation allowance). If servicing assets are impaired, the impairment is recognized in current-period earnings and the carrying value of the assets is adjusted through a valuation allowance. If the value of impaired servicing assets subsequently increases, the Company recognizes the increase in value in current-period earnings and adjusts the carrying value of the servicing assets through a reduction in the valuation allowance to adjust the carrying value only to the extent of the valuation allowance.
Loans Held for Sale	'
	Loans Held for Sale
	Loans held for sale are primarily comprised of Borrower Loans held for short durations and are recorded at fair value. The fair value is estimated using discounted cash flow methodologies based upon a set of valuation assumptions similar to those of other Borrower Loans, which are set forth in Note 2— Fair Value Measurement.
Fair Value Measurement	'
	Fair Value Measurement
	The Company adopted ASC Topic 820, Fair Value Measurements and Disclosures, on January 1, 2008, which provides a framework for measuring the fair value of assets and liabilities. ASC Topic 820 also provides guidance regarding a fair value hierarchy, which prioritizes information used to measure fair value and the effect of fair value measurements on earnings and provides for enhanced disclosures determined by the level within the hierarchy of information used in the valuation. ASC Topic 820 applies whenever other standards require (or permit) assets or liabilities to be measured at fair value but does not expand the use of fair value in any new circumstances.
	ASC Topic 820 defines fair value in terms of the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.
	The price used to measure the fair value is not adjusted for transaction costs. Under ASC Topic 820, the fair value measurement also assumes that the transaction to sell an asset occurs in the principal market for the asset or, in the absence of a principal market, the most advantageous market for the asset. The principal market is the market in which the reporting entity would sell or transfer the asset with the greatest volume and level of activity for the asset. In determining the principal market for an asset or liability under ASC Topic 820, it is assumed that the reporting entity has access to the market as of the measurement date. If no market for the asset exists or if the reporting entity does not have access to the principal market, the reporting entity should use a hypothetical market.
	Under ASC Topic 820, assets and liabilities carried at fair value on the balance sheets are classified among three levels based on the observability of the inputs used to determine fair value:
	Level 1 — The valuation is based on quoted prices in active markets for identical instruments.
	Level 2 — The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
	Level 3 — The valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques, which incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument or valuations that require significant management judgment or estimation.
	Fair value of financial instruments are determined based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of quoted prices and observable inputs and to minimize the use of unobservable inputs when measuring fair value. Various valuation techniques are utilized, depending on the nature of the financial instrument, including the use of market prices for identical or similar instruments, or discounted cash flow models. When possible, active and observable market data for identical or similar financial instruments are utilized. Alternatively, fair value is determined using assumptions that management believes a market participant would use in pricing the asset or liability.
	Financial instruments consist principally of Cash and cash equivalents, Restricted cash, Borrower loans receivable, Loans held for sale, Accounts payable and accrued liabilities, and Notes.  The estimated fair values of Cash and cash equivalents, Restricted cash, Accounts payable and accrued liabilities approximate their carrying values because of their short term nature.
	The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
	30-Sep-14	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	253,068	$	253,068
	Restricted cash		15,577		1,374		-		16,951
	Loans held for sale		-		-		16,350		16,350
	Total assets	$	15,577	$	1,374	$	269,418	$	286,369
	Liabilities
	Notes	$	-	$	-	$	252,911	$	252,911
	31-Dec-13	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	226,094	$	226,094
	Restricted cash		14,032		1,441		-		15,473
	Loans held for sale		-		-		3,917		3,917
	Total assets	$	14,032	$	1,441	$	230,011	$	245,484
	Liabilities
	Notes	$	-	$	-	$	226,794	$	226,794
Internal Use Software and Website Development	'
	Internal Use Software and Website Development
	Internal use software costs and website development costs are accounted for, in accordance with ASC Topic 350-40, Internal Use Software, and ASC Topic 350-50, Website Development Costs. In accordance with ASC Topic 350-40 and 350-50, the costs to develop software for the website and other internal uses are capitalized when management has authorized and committed project funding, preliminary development efforts are successfully completed, and it is probable that the project will be completed and the software will be used as intended. Capitalized software development costs primarily include software licenses acquired, fees paid to outside consultants, and salaries and payroll related costs for employees directly involved in the development efforts.
	Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed. Costs incurred for upgrades and enhancements that are considered to be probable to result in additional functionality are capitalized. Capitalized costs are included in property and equipment and amortized to expense using the straight-line method over their expected lives. Software assets are evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable.  Recoverability of software assets to be held and used is measured by a comparison of the carrying amount of the asset to the future net undiscounted cash flows expected to be generated by the asset.  If such software assets are considered to be impaired, the impairment to be recognized is the excess of the carrying amount over the fair value of the software asset.
Repurchase and Indemnification Obligation	'
	Repurchase and Indemnification Obligation
	Under the terms of the Notes, the Lender Registration Agreements between the Company and investor members who participate in the Note Channel, and the loan purchase agreements between the Company and investor members that participate in the Whole Loan Channel, the Company may, in certain circumstances, become obligated to repurchase a Note or Borrower Loan from an investor member or indemnify an investor member against loss on a Note. Generally, these circumstances include the occurrence of verifiable identity theft, the failure to properly follow loan listing or bidding protocols, or a violation of the applicable federal, state, or local lending laws. The fair value of the indemnification and repurchase obligation is estimated based on historical experience. The Company recognizes a liability for the repurchase and indemnification obligation when the Notes or Borrower Loans are issued. Indemnified or repurchased Notes and repurchased Borrower Loans associated with violations of federal, state, or local lending laws or verifiable identity theft are written off at the time of repurchase or at the time an indemnification payment is made.
Revenue Recognition	'
	Revenue Recognition
	Revenue primarily results from fees earned. Fees include loan origination fees paid by borrowers and servicing fees paid by investors. We also have other smaller sources of revenue reported as other revenue, this includes referral fees and gains on whole loan sales.
	Origination Fees
	The Company earns an origination fee upon the successful closing of all Borrower Loans issued through the platform. WebBank charges the origination fee and the Company receives payments from WebBank equal to the origination fee as compensation for its loan origination activities on behalf of WebBank. The borrower receives an amount equal to the loan amount net of the loan origination fee. The loan origination fee is determined by the term and credit grade of the loan, and ranges from 1.00% to 5.00% of the original principal amount. Since the Company accounts for Borrower Loans and Loans held for sale at fair value, origination fees are not deferred but are recognized at origination of the Borrower Loan, and direct costs to originate Borrower Loans are recorded as expenses as incurred.
	Service Fees
	Investors in whole loans typically pay the Company a servicing fee which is currently generally set at 1% per annum of the outstanding principal balance of the corresponding loan prior to applying the current payment. The servicing fee compensates the Company for the costs we incur in servicing the related loan, including managing payments from borrowers, payments to investors and maintaining investors’ account portfolios. Prosper records servicing fees paid by note holders and borrower loan holders as a component of operating revenue when received. The amortization of servicing rights is also included in this line.
	Interest Income on Borrower Loans Receivable and Interest Expense on Notes
	The Company recognizes interest income on Borrower Loans funded through the Note Channel and interest expense on the corresponding Notes using the accrual method based on the stated interest rate to the extent the Company believes it to be collectable.
Cost of Services	'
	Cost of Services
	Cost of Services includes costs that are directly related to the servicing of Borrower Loans such as fees from WebBank for processing loan payments.
Comprehensive Income	'
	Comprehensive Income
	There is no comprehensive income (loss) other than the net income (loss) disclosed in the condensed consolidated statements of operations.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In May 2014, as part of its ongoing efforts to assist in the convergence of U.S. GAAP and International Financial Reporting Standards (“IFRS”), FASB issued ASU 2014-09, “Revenue from Contracts with Customers.” The new guidance sets forth a new five-step revenue recognition model which replaces the prior revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance that have historically existed in U.S. GAAP. The underlying principle of the new standard is that a business or other organization will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects what it expects in exchange for the goods or services. The standard also requires more detailed disclosures and provides additional guidance for transactions that were not addressed completely in the prior accounting guidance. The standard will be effective for the Company in the first quarter of fiscal 2017. Early adoption is not permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.
	In August 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-15, "Presentation of Financial Statements - Going Concern (Subtopic 205-40); Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern," which requires management of a company to evaluate whether there is substantial doubt about the company's ability to continue as a going concern. This ASU is effective for the annual reporting period ending after December 15, 2016, and for interim and annual reporting periods thereafter, with early adoption permitted. The Company is currently assessing the potential impact on its financial statements from adopting this new guidance.
Prosper Funding LLC [Member]	'
Summary of Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	Prosper Funding’s unaudited interim condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“US GAAP”) and disclosure requirements for interim financial information and the requirements of Rule 8-03 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by US GAAP for complete financial statements. The unaudited interim condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2013. The balance sheet at December 31, 2013 has been derived from the audited financial statements at that date. Management believes these unaudited interim condensed consolidated financial statements reflect all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the results that may be expected for the full year or any other interim period.
	The accompanying interim condensed consolidated financial statements include the accounts of Prosper Funding and its wholly-owned subsidiary PAH. All intercompany balances and transactions between Prosper Funding and PAH have been eliminated in consolidation.
Reclassifications	'
	Reclassifications
	During the nine months ended September 30, 2014, the Company changed the presentation of its revenues in the statement of operations.   A new line called “Servicing Fees” was created and the servicing fees related to whole loans that were previously included in interest income were reclassified to this new line.   Also, the “Change in Fair Value of Borrower Loans, Loans Held for Sale and Notes, Net” was moved into the total revenues subtotal.     Lastly, the subtotals were realigned to reflect the new presentation.   These changes had no impact to net income and are reflected in the “Reclassifications” column in the table below. Management believes these changes make the income statement more useful for the readers of the financial statements and comparable with the Company’s competitors.
Use of Estimates	'
	Use of Estimates
	The preparation of Prosper Funding’s interim condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. These estimates, judgments and assumptions include but are not limited to the following: valuation of Borrower Loans and associated Notes, valuation of servicing rights, repurchase and indemnification obligation, valuation allowance on deferred tax assets, and contingent liabilities. Prosper Funding bases its estimates on historical experience from all Borrower Loans, and on various other assumptions that it believes to be reasonable under the circumstances. Actual results could differ from those estimates.
Certain Risks and Concentrations	'
	Certain Risks and Concentrations
	In the normal course of its business, Prosper Funding encounters two significant types of risk: credit and regulatory. Financial instruments that potentially subject Prosper Funding to significant concentrations of credit risk consist primarily of cash, cash equivalents, and restricted cash. Prosper Funding places cash, cash equivalents, and restricted cash with high-quality financial institutions and is exposed to credit risk in the event of default by these institutions to the extent the amount recorded on the balance sheet exceeds federally insured amounts.  Prosper Funding performs periodic evaluations of the relative credit standing of these financial institutions and has not sustained any credit losses from instruments held at these financial institutions.
	To the extent that Borrower Loan payments are not made, servicing income will be reduced.  A series of Notes corresponding to a particular Borrower Loan is wholly dependent on the repayment of such Borrower Loan. As a result, Prosper Funding does not bear the risk on such Borrower Loan.
	Prosper Funding is subject to various regulatory requirements. The failure to appropriately identify and address these regulatory requirements could result in certain discretionary actions by regulators that could have a material effect on Prosper Funding's consolidated financial position and results of operations.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	Cash equivalents are recorded at cost, which approximates fair value. Such deposits periodically exceed amounts insured by the FDIC.
Restricted Cash	'
	Restricted Cash
	Restricted cash consists primarily of cash deposits held as collateral as required for loan funding and servicing activities.
Borrower Loans and Notes	'
	Borrower Loans and Notes
	Prosper Funding has adopted the provisions of ASC Topic 825, Financial Instrument.  ASC Topic 825 permits companies to choose to measure certain financial instruments and certain other items at fair value on an instrument-by-instrument basis with unrealized gains and losses on items for which the fair value option has been elected reported in earnings.  The fair value election, with respect to an item, may not be revoked once an election is made.  Prosper Funding does not record a specific allowance account related to the Borrower Loans funded through the Note Channel in which it has elected the fair value option, but rather estimates the fair value of such Borrower Loans and Notes using discounted cash flow methodologies adjusted for Prosper Funding’s historical payment, loss and recovery rates.
Servicing Asset/Liability	'
	Servicing Asset/Liability
	The Company records servicing assets and liabilities at their estimated fair values when the Company sells Borrower Loans to unrelated third-party buyers. The gain or loss on a loan sale is recorded in “Other Revenue” while the while the fair value of the servicing rights, which is based on the degree to which the contractual loan servicing fee is above or below an estimated market loan servicing fee is recorded as an offset in servicing assets or liabilities. Servicing assets and liabilities are recorded in “Prepaid and Other Assets” and “Accrued Expenses and Other Liabilities,” respectively, on the condensed consolidated balance sheets. The initial fair value of servicing assets or liabilities are amortized in proportion to and over the period of estimated servicing income or loss and are reported in “Servicing Fees” on the condensed consolidated statement of operations.
	The Company uses a discounted cash flow model to estimate the fair value of the loan servicing assets or liabilities which considers the contractual projected servicing fee revenue that the Company earns on the loans, estimated market servicing fees to service such loans, prepayment rates, default rates and the current principal balances of the loans.
	The Company periodically assesses servicing assets accounted for using the amortization method for impairment. Impairment occurs when the current fair value of the servicing assets falls below the asset’s carrying value (carrying value is the amortized cost reduced by any related valuation allowance). If servicing assets are impaired, the impairment is recognized in current-period earnings and the carrying value of the assets is adjusted through a valuation allowance. If the value of impaired servicing assets subsequently increases, the Company recognizes the increase in value in current-period earnings and adjusts the carrying value of the servicing assets through a reduction in the valuation allowance to adjust the carrying value only to the extent of the valuation allowance.
Loans Held for Sale	'
	Loans Held for Sale
	Loans held for sale are primarily comprised of Borrower Loans held for short durations and are recorded at cost plus accrued interest which approximates fair value. For Borrower Loans held long term, the fair value is estimated using discounted cash flow methodologies based upon a set of valuation assumptions similar to those of other Borrower Loans, which are set forth in Note 2— Fair Value Measurement.
Fair Value Measurement	'
	Fair Value Measurement
	Prosper Funding follows ASC Topic 820, Fair Value Measurements and Disclosures, which provides guidance regarding a fair value hierarchy, which prioritizes information used to measure fair value and the effect of fair value measurements on earnings and provides for enhanced disclosures determined by the level within the hierarchy of information used in the valuation. ASC Topic 820 applies whenever other standards require (or permit) assets or liabilities to be measured at fair value but does not expand the use of fair value in any new circumstances.
	ASC Topic 820 defines fair value in terms of the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.
	The price used to measure the fair value is not adjusted for transaction costs. Under ASC Topic 820, the fair value measurement also assumes that the transaction to sell an asset occurs in the principal market for the asset or, in the absence of a principal market, the most advantageous market for the asset. The principal market is the market in which the reporting entity would sell or transfer the asset with the greatest volume and level of activity for the asset. In determining the principal market for an asset or liability under ASC Topic 820, it is assumed that the reporting entity has access to the market as of the measurement date. If no market for the asset exists or if the reporting entity does not have access to the principal market, the reporting entity should use a hypothetical market.
	Under ASC Topic 820, assets and liabilities carried at fair value in the balance sheets are classified among three levels based on the observability of the inputs used to determine fair value:
	Level 1 — The valuation is based on quoted prices in active markets for identical instruments.
	Level 2 — The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
	Level 3 — The valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques, which incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument or valuations that require significant management judgment or estimation.
	Fair value of financial instruments are determined based on the fair value hierarchy established in ASC Topic 820, which requires an entity to maximize the use of quoted prices and observable inputs and to minimize the use of unobservable inputs when measuring fair value. Various valuation techniques are utilized, depending on the nature of the financial instrument, including the use of market prices for identical or similar instruments, or discounted cash flow models. When possible, active and observable market data for identical or similar financial instruments are utilized. Alternatively, fair value is determined using assumptions that management believes a market participant would use in pricing the asset or liability.
	Financial instruments consist principally of Cash and cash equivalents, Restricted cash, Borrower loans receivable, Loans held for sale, Accounts payable and accrued liabilities, and Notes.  The estimated fair values of cash and cash equivalents, restricted cash, accounts payable and accrued liabilities approximate their carrying values because of their short term nature.
	The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
	30-Sep-14	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	253,068	$	253,068
	Certificates of deposit & restricted cash		7,448		1,273		-		8,721
	Loans held for sale		-		-		16,350		16,350
	Total assets	$	7,448	$	1,273	$	269,418	$	278.139
	Liabilities
	Notes	$	-	$	-	$	252,911	$	252,911
	31-Dec-13	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	226,094	$	226,094
	Certificates of deposit & restricted cash		11,028		1,271		-		12,299
	Loans held for sale		-		-		3,917		3,917
	Total assets	$	11,028	$	1,271	$	230,011	$	242,310
	Liabilities
	Notes	$	-	$	-	$	226,794	$	226,794
Internal Use Software and Website Development	'
	Internal Use Software and Website Development
	Prosper Funding accounts for internal use software costs, including website development costs, in accordance with ASC Topic 350-40, Internal Use Software and ASC Topic 350-50, Website Development Costs. In accordance with ASC Topic 350-40 and 350-50, the costs to develop software for the website and other internal uses are capitalized when management has authorized and committed project funding, preliminary development efforts are successfully completed, and it is probable that the project will be completed and the software will be used as intended. Capitalized software development costs primarily include software licenses acquired, fees paid to outside consultants, and salaries and payroll related costs for employees directly involved in the development efforts.
	Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed. Costs incurred for upgrades and enhancements that are considered to be probable to result in additional functionality are capitalized. Capitalized costs are included in property and equipment and amortized to expense using the straight-line method over their expected lives. Prosper Funding evaluates its software assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable.  Recoverability of software assets to be held and used is measured by a comparison of the carrying amount of the asset to the future net undiscounted cash flows expected to be generated by the asset.  If such software assets are considered to be impaired, the impairment to be recognized is the excess of the carrying amount over the fair value of the software asset.
Repurchase and Indemnification Obligation	'
	Repurchase and Indemnification Obligation
	Under the terms of the Notes, the Lender Registration Agreements between Prosper Funding and investor members who participate in the Note Channel, and the loan purchase agreements between Prosper Funding and investor members that participate in the Whole Loan Channel, Prosper Funding may, in certain circumstances, become obligated to repurchase a Note or Borrower Loan from an investor member or indemnify an investor member against loss on a Note. Generally, these circumstances include the occurrence of verifiable identity theft, the failure to properly follow loan listing or bidding protocols, or a violation of the applicable federal, state, or local lending laws. The indemnification and repurchase obligation is estimated based on historical experience. Prosper Funding accrues a provision for the repurchase and indemnification obligation when the Notes or Borrower Loans are issued. Indemnified or repurchased Notes and repurchased Borrower Loans associated with violations of federal, state, or local lending laws or verifiable identity theft are written off at the time of repurchase or at the time an indemnification payment is made.
Revenue Recognition	'
	Revenue Recognition
	Revenue primarily results from fees earned. Fees include loan origination fees paid by borrowers and servicing fees paid by investors. We also have other smaller sources of revenue reported as other revenue this includes the gains on whole loan sales.
	Administration Agreement License Fees
	Prosper Funding primarily generates revenues through license fees it earns through an Administration Agreement with PMI.  The Administration Agreement contains a license granted by Prosper Funding to PMI that entitles PMI to use the platform for and in relation to: (i) PMI’s performance of its duties and obligations under the Administration Agreement relating to corporate administration, loan platform services, loan and note servicing and marketing, and (ii) PMI’s performance of its duties and obligations to WebBank in relation to loan origination and funding. The license fees are based on the number of listings that are posted to the platform.
	Service Income
	Investors in whole loans typically pay the Company a servicing fee which is currently generally set at 1% per annum of the outstanding principal balance of the corresponding loan prior to applying the current payment. The servicing fee compensates the Company for the costs we incur in servicing the related loan, including managing payments from borrowers, payments to investors and maintaining investors’ account portfolios. Prosper records servicing fees paid by note holders and borrower loan holders as a component of operating revenue when received. The amortization of servicing rights is also included in this line.
	Interest Income on Borrower Loans Receivable and Interest Expense on Notes
	Prosper Funding recognizes interest income on Borrower Loans funded through the Note Channel and interest expense on the corresponding Notes using the accrual method based on the stated interest rate to the extent Prosper Funding believes it to be collectable.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2014
Summary of Significant Accounting Policies [Abstract]	'
Assets and liabilities measured at fair value on a recurring basis	'
	The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
	30-Sep-14	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	253,068	$	253,068
	Restricted cash		15,577		1,374		-		16,951
	Loans held for sale		-		-		16,350		16,350
	Total assets	$	15,577	$	1,374	$	269,418	$	286,369
	Liabilities
	Notes	$	-	$	-	$	252,911	$	252,911
	31-Dec-13	Level 1		Level 2		Level 3		Fair
								Value
	Assets
	Borrower loans receivable	$	-	$	-	$	226,094	$	226,094
	Restricted cash		14,032		1,441		-		15,473
	Loans held for sale		-		-		3,917		3,917
	Total assets	$	14,032	$	1,441	$	230,011	$	245,484
	Liabilities
	Notes	$	-	$	-	$	226,794	$	226,794

Borrower_Loans_and_Notes_Held_1

Borrower Loans and Notes Held at Fair Value (Tables)	9 Months Ended
	Sep. 30, 2014
Borrower Loans and Notes Held at Fair Value [Abstract]	'
Borrower loans, notes and loans held for sale	'
	At September 30, 2014 and December 31, 2013, borrower loans, notes and loans held for sale (in thousands) were:
		Borrower Loans						Notes						Loans Held for Sale
		30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13
	Aggregate principal balance outstanding	$	256,026		$	225,953		$	(258,947	)	$	(229,271	)	$	16,360		$	3,915
	Fair value adjustments		(2,958	)		141			6,036			2,477			(10	)		2
	Fair value	$	253,068		$	226,094		$	(252,911	)	$	(226,794	)	$	16,350		$	3,917
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions	'
	Key economic assumptions and the sensitivity of the current fair value to immediate adverse changes in those assumptions at September 30, 2014 for Borrower Loans and Notes funded through the Note Channel are presented in the following table (in thousands):
		Borrower Loans			Notes
	Discount rate assumption:		9.36	%*		9.36	%*
	Resulting fair value from:
	100 basis point increase	$	247,738		$	244,736
	200 basis point increase		244,715			241,743
	Resulting fair value from:
	100 basis point decrease	$	253,975		$	250,912
	200 basis point decrease		257,188			254,085
	Default rate assumption:		7.4	%*		7.4	%*
	Resulting fair value from:
	10% higher default rates	$	247,275		$	244,275
	20% higher default rates		244,418			241,452
	Resulting fair value from:
	10% lower default rates	$	253,729		$	250,663
	20% lower default rates		256,584			253,493
	* Represents weighted average assumptions considering all credit grades.
Changes in Level 3 assets measured at fair value on a recurring basis	'
	The changes in Level 3 assets measured at fair value on a recurring basis are as follows (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance at January 1, 2013	$	166,900			(167,478	)		175			(403	)
	Originations		118,349			(118,349	)		71			71
	Principal repayments		(65,504	)		65,167			(106	)		(443	)
	Borrower loans sold to third parties		(80,786	)		-			-			(80,786	)
	Change in fair value on borrower loans and notes		(15,614	)		16,195			-			581
	Change in fair value of loans held for sale		-			-			(3	)		(3	)
	Balance at September 30, 2013	$	204,131			(204,465	)		137			(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance at January 1, 2014	$	226,094		$	(226,794	)	$	3,917		$	3,217
	Originations		823,841			(130,828	)		229,679			922,692
	Principal repayments		(88,944	)		89,336			(899	)		(507	)
	Borrower loans sold to third parties		(693,007	)		-			(216,336	)		(909,343	)
	Change in fair value on borrower loans and notes		(14,916	)		15,375			-			459
	Change in fair value of loans held for sale								(11	)		(11	)
	Balance at September 30, 2014	$	253,068		$	(252,911	)	$	16,350		$	16,507
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance July 1, 2013	$	187,124		$	(187,489	)	$	153		$	(212	)
	Originations		43,475			(43,475	)		25			25
	Principal repayments		(22,778	)		22,718			(41	)		(101	)
	Borrower loans sold to third parties		(50,623	)		-			-			(50,623	)
	Change in fair value on borrower loans and notes		(3,690	)		3,781			-			91
	Balance at September 30, 2013	$	204,131		$	(204,465	)	$	137		$	(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance July 1, 2014	$	246,203		$	(246,511	)	$	9,543		$	9,235
	Originations		372,027			(44,115	)		117,752			445,664
	Principal repayments		(31,226	)		31,620			(586	)		(192	)
	Borrower loans sold to third parties		(327,909	)		-			(110,350	)		(438,259	)
	Change in fair value on borrower loans and notes		(6,027	)		6,095			-			68
	Change in fair value of loans held for sale								(9	)		(9	)
	Balance at September 30, 2014	$	253,068		$	(252,911	)	$	16,350		$	16,507

Loan_Servicing_Note_Tables

Loan Servicing Note (Tables)	9 Months Ended
	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]	'
Significant Unobservable Inputs	'
	The following table presents quantitative information about the significant unobservable inputs used for our servicing asset/liability fair value measurements at September 30, 2014 and December 31, 2013:
		Weighted Average
	Unobservable Input	30-Sep-14			31-Dec-13
	Discount rate		9.6	%**		9.9	%**
	Default rate		5.5	%**		5.6	%**
	Market servicing rate		0.65	%		0.65	%
	** Represents weighted average or aggregate assumptions considering all credit grades.
Schedule Of Servicing Assets and Liabilities At Amortized Value	'
	The following tables present additional information about Level 3 servicing assets and liabilities being amortized for the three and nine months ended September 30, 2014 (in thousands).  There were no servicing assets or liabilities recorded at September 30, 2013.
		Three Months Ended
		30-Sep-14
		Servicing			Servicing
		Assets			Liabilities
	Amortized cost at June 30, 2014	$	968		$	857
	Additions		1,044			414
	Less: Amortization		(157	)		(140	)
	Amortized cost at September 30, 2014	$	1,855		$	1,131
		Nine Months Ended
		30-Sep-14
		Servicing			Servicing
		Assets			Liabilities
	Amortized cost at December 31, 2013	$	260		$	339
	Additions		1,873			1,064
	Less: Amortization		(278	)		(272	)
	Amortized cost at September 30, 2014	$	1,855		$	1,131
Prosper Funding LLC [Member]	'
Condensed Financial Statements, Captions [Line Items]	'
Significant Unobservable Inputs	'
	The following table presents quantitative information about the significant unobservable inputs used for our servicing asset/liability fair value measurements at September 30, 2014 and December 31, 2013:
		Weighted Average
	Unobservable Input	30-Sep-14			31-Dec-13
	Discount rate		9.6	%**		9.9	%**
	Default rate		5.5	%**		5.6	%**
	Market servicing rate		0.65	%		0.65	%
	** Represents weighted average or aggregate assumptions considering all credit grades.
Schedule Of Servicing Assets and Liabilities At Amortized Value	'
	The following tables present additional information about Level 3 servicing assets and liabilities being amortized for the three and nine months ended September 30, 2014 (in thousands).  There were no servicing assets or liabilities recorded at September 30, 2013.
		Three Months Ended
		30-Sep-14
		Servicing			Servicing
		Assets			Liabilities
	Amortized cost at June 30, 2014	$	770		$	693
	Additions		772			306
	Less: Amortization		(126	)		(114	)
	Amortized cost at September 30,2014	$	1,416		$	885
		Nine Months Ended
		30-Sep-14
		Servicing			Servicing
		Assets			Liabilities
	Amortized cost at December 31, 2013	$	241		$	314
	Additions		1,408			804
	Less: Amortization		(233	)		(233	)
	Amortized cost at September 30, 2014	$	1,416		$	885

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Net Loss Per Share Available to Common Stockholders [Abstract]	'
Basic and diluted loss per share	'
	Basic and diluted net loss per share was calculated as follows (in thousands, except for share and per share amounts):
		Three months ended						Nine months ended
		September 30,						September 30,
		2014			2013			2014			2013
	Numerator:
	Net loss available to common stockholders for basic and diluted EPS	$	(12,168	)	$	(4,963	)	$	(14,710	)	$	(24,815	)
	Denominator:
	Weighted average shares used in computing basic and diluted net loss per share		9,280,334			6,927,648			8,740,785			6,119,987
	Basic and diluted net loss per share	$	(1.31	)	$	(0.72	)	$	(1.68	)	$	(4.05	)
Dilutive shares excluded from the diluted net loss per share calculation	'
	Due to losses attributable to the Company’s common shareholders for each of the periods below, the following potentially dilutive shares are excluded from the diluted net loss per share calculation because they were anti-dilutive under the treasury stock or if converted method, in accordance with ASC Topic 260:
		Three and Nine months ended September 30
		2014			2013
	Excluded Securities:	(shares)			(shares)
	Convertible preferred stock issued and outstanding		30,699,957			22,156,922
	Stock options issued and outstanding		4,540,101			979,483
	Unvested stock options exercised		4,768,109			6,461,797
	Warrants issued and outstanding		220,882			218,797
	Total common stock equivalents excluded from diluted net loss per common share computation		40,229,049			29,816,999

Convertible_Preferred_Stock_an1

Convertible Preferred Stock and Stockholders Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Convertible Preferred Stock and Stockholders Equity (Deficit) [Abstract]	'
Convertible preferred stock and stockholders equity (deficit)	'
	On June 18, 2014, the Company issued a Tender Offer Statement to purchase up to 1,392,757 shares, in the aggregate, of its Series A Preferred Stock and Series B Preferred Stock, at a price equal to $14.36 per share. Upon closure of the tender offer on July 16, 2014, 156,508 shares of Series A Preferred Stock and 1,133,558 share of Series B Preferred Stock were purchased for a total price of $18.5 million.
	Convertible	Par		Authorized, Issued and		Liquidation Preference
	Preferred Stock	Value		Outstanding shares as of September 30, 2014		($,000s)
	New Series A	$	0.01		13,711,644	$	19,774
	Series A-1		0.01		4,952,183		49,522
	New Series B		0.01		7,155,176		21,581
	New Series C		0.01		4,880,954		70,075
					30,699,957	$	160,952

Stock_Option_Plan_and_Compensa1

Stock Option Plan and Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Stock Option Plan and Compensation [Abstract]	'
Schedule of activity of options that were early exercised under the plan	'
	The activity of options that were early exercised under the plan as for the period below:
			Early exercised				Weighted average
			options, unvested				exercise price
	Balance as of January 1, 2014			5,594,134				0.11
	Exercise of non-vested stock options			796,828				0.57
	Repurchase of restricted stock			(111,095	)			(0.10	)
	Restricted stock vested			(1,511,758	)			(0.11	)
	Balance as of Sept  30, 2014			4,768,109				0.18
Summarized option activity under option plan	'
	Option activity under the Plan is summarized as follows for the period below:
							Weighted-
			Options Issued				Average Exercise
			and Outstanding				Price
	Balance as of January 1, 2014			938,585			$	1.39
	Options granted (weighted average fair value of $0.30)			4,669,091				1.24
	Options exercised – vested			(56,323	)			1.28
	Options exercised – nonvested			(796,828	)			0.57
	Options forfeited			(214,424	)			3.53
	Balance as of September 30, 2014			4,540,101			$	0.91
	Options outstanding and exercisable at September 30, 2014			1,891,438			$	1.4
Additional information regarding common stock options outstanding	'
	Additional information regarding the Company’s common stock options outstanding as of September 30, 2014 is as follows:
					Options Outstanding												Options Exercisable
	Range of				Number				Weighted –				Weighted –				Number		Weighted -
	Exercise				Outstanding				Avg.				Avg.				Vested		Avg.
	Prices								Remaining				Exercise						Exercise
									Life				Price						Price
	$	0.10 - $0.10				170,728				8.87			$	0.1				60,113	$	0.1
		0.57 - 0.57				3,203,051				9.37				0.57				1,339,911		0.57
		1.20 – 1.20				133,334				6.96				1.2				117,435		1.2
		1.70 – 1.70				99,593				7.65				1.7				61,049		1.7
		2.00 – 2.00				287,933				5.82				2				287,680		2
		5.00 - 5.00				7,000				2				5				7,000		5
		5.60 - 5.60				18,250				4.96				5.6				18,250		5.6
		5.65-5.65				620,212				9.87				5.65				-		5.65
	$	0.10 - $19.40				4,540,101				9.06			$	1.41				1,891,438	$	1.4
Fair value of stock option awards	'
	The fair value of the Company’s stock option awards for the three and nine months ended September 30, 2014 and 2013 was estimated at the date of grant using the Black-Scholes model with the following average assumptions:
		Three Months ended								Nine Months ended
		September 30,								September 30,
		2014					2013			2014				2013
	Volatility of common stock			67.47	%			69.57	%			69.42	%			69.56	%
	Risk-free interest rate			1.92	%			1.39	%			1.91	%			1.9	%
	Expected life*	5.9 years					5.8 years			5.9 years				5.8 years
	Dividend yield			0	%			0	%			0	%			0	%
	Weighted-average fair value of grants		$	3.46			$	0.1			$	0.76			$	0.01
	*For nonemployee stock option awards, the expected life is the contractual term of the award, which is generally ten years.

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies [Abstract]	'
Future minimum rental payments under non-cancelable operating leases	'
	Future minimum rental payments under these leases as of September 30, 2014 are as follows (in thousands):
	Remaining three months of 2014	$	139
	2015		2,459
	2016		3,757
	2017		3,866
	2018		3,978
	2019		4,093
	Thereafter		12,981
	Total future operating lease obligations	$	31,273

Related_Parties_Tables

Related Parties (Tables)	9 Months Ended
	Sep. 30, 2014
Related Parties [Abstract]	'
Aggregate amount of loans purchased and the income earned	'
	Certain of the Company’s executive officers, directors who are not executive officers, and affiliates participate on the Company’s lending platform by placing bids and purchasing Notes and Borrower Loans.  The aggregate amount of Notes and Borrower Loans purchased and the income earned by parties deemed to be affiliates and related parties of the Company as of September 30, 2014 and 2013 are summarized below (amounts in thousands):
		Aggregate Amount of Notes				Income Earned on Notes
		and Borrower Loans				and Borrower Loans
	Related Party	Purchased September 30,				nine months ended September 30,
		2014		2013		2014		2013
	Executive officers and management	$	2,100	$	806	$	83	$	30
	Directors		5,198		4,578		81		204
		$	7,298	$	5,384	$	164	$	234

Prior_Period_Adjustments_Table

Prior Period Adjustments (Tables)	9 Months Ended
	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]	'
In accordance with SAB 108, the Consolidated Statements of Operations, the Consolidated Balance Sheets and the Consolidated Statements of Cash Flows have been revised as follows	'
	Condensed Consolidated Statements of Cash Flows - Nine months ended September 30, 2013
		As previously			Adjustments			As corrected
		reported
	Net income (loss)	$	(24,815	)	$	-		$	(24,815	)
	Change in fair value of Borrower Loans		3,903			11,711			15,614
	Change in fair value of Notes		(4,484	)		(11,711	)		(16,195	)
	Restricted cash except for those related to investing activities		(2,334	)		334			(2,000	)
	Loans held for sale at fair value		–			35			35
	Net cash used in operating activities		(17,666	)		369			(17,297	)
	Origination of Borrower Loans held at fair value		(118,349	)		(80,786	)		(199,135	)
	Repayment of Borrower Loans held at fair value		77,215			(11,711	)		65,504
	Proceeds from sale of Borrower Loans held at fair value		-			80,786			80,786
	Repayment of Loans held for investment at fair value		106			(106	)		–
	Origination of Loans held for investment at fair value		(71	)		71			–
	Changes in restricted cash related to investing activities		–			(334	)		(334	)
	Net cash used in investing activities		(42,433	)		(12,080	)		(54,513	)
	Payment of Notes held at fair value		(76,878	)		11,711			(65,167	)
	Net cash provided by financing activities		87,099			11,711			98,810
	Condensed Consolidated Balance Sheet - December 31, 2013
		As previously			Adjustments			As corrected
		reported
	Borrower Loans Receivable at Fair Value	$	226,238		$	(144	)	$	226,094
	Prepaid and Other Assets		708			260			968
	Total Assets		268,289			116			268,405
	Accounts Payable and Accrued Liabilities		6,737			28			7,076
	Class Action Settlement Liability		10,000			(261	)		9739
	Repurchase Liability for Unvested Restricted Stock Awards		609			(50	)		559
	Total Liabilities		244,172			339			244,200
	Convertible Preferred Stock		-			45,118			45,118
	Convertible Preferred Stock		273			(273	)		-
	Additional Paid in Capital		128,140			(44,795	)		83,345
	Accumulated Deficit		(104,080	)		38			(104,042	)
	Total Stockholders' Equity (Deficit)		24,117			(45,030	)		(20,913	)
	Total Liabilities, Convertible Preferred Stock and Stockholders' Equity (Deficit)	$	268,289		$	116		$	268,405
Prosper Funding LLC [Member]	'
Condensed Financial Statements, Captions [Line Items]	'
In accordance with SAB 108, the Consolidated Statements of Operations, the Consolidated Balance Sheets and the Consolidated Statements of Cash Flows have been revised as follows	'
	Condensed Consolidated Statements of Cash Flows - Nine months ended September 30, 2013
		As previously			Adjustments			As corrected
		reported
	Change in fair value of Borrower Loans		(4,484	)		(11,711	)		(16,195	)
	Change in fair value of Notes		3,903			11,711			15,614
	Restricted cash		(969	)		969			–
	Loans held for sale at fair value		–			35			35
	Net cash provided by (used in) operating activities		1,794			1,004			2,798
	Origination of borrower loans held for sale		(108,527	)		(80,788	)		189,313	)
	Proceeds from sale of borrowed loans held at fair value		-			80,786			80,786
	Repayment of Borrower Loans held at fair value		70,837			(11,711	)		59,126
	Repayment of loans held for investment at fair value		106			(106	)		–
	Origination of loans held for investment at fair value		(71	)		71			–
	Change in restricted cash		–			(969	)		(969	)
	Net cash used in investing activities		(38,882	)		(12,715	)		(51,597	)
	Payment of Notes held at fair value		(70,152	)		11,711			(58,441	)
	Net cash provided by financing activities		40,250			11,711			51,961
	Condensed Consolidated Balance Sheet - December 31, 2013
		As previously			Adjustments			As corrected
		reported
	Borrower Loans Receivable at Fair Value		226,238			(144	)		226,094
	Other Assets		14			241			255
	Total Assets		250,237			97			250,334
	Accounts payable and accrued liabilities		3,712			314			4,026
	Total Liabilities		230,743			314			231,057
	Member's Equity		16,076			6			16,082
	Retained Earnings (Accumulated Deficit)		3,418			(223	)		3,195
	Total Member's Equity		19,494			(217	)		19,277
	Total Liabilities and Member's Equity		250,237			97			250,334

Schedule_I_Prosper_Funding_LLC2

Schedule I, Prosper Funding LLC (Tables)	9 Months Ended
	Sep. 30, 2014
Borrower Loans and Borrower Payment Notes Held at Fair Value [Abstract]	'
Assets and liabilities measured at fair value on a recurring basis	'
	The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
	30-Sep-14	Level 1			Level 2			Level 3			Fair
											Value
	Assets
	Borrower loans receivable	$	-		$	-		$	253,068		$	253,068
	Restricted cash		15,577			1,374			-			16,951
	Loans held for sale		-			-			16,350			16,350
	Total assets	$	15,577		$	1,374		$	269,418		$	286,369
	Liabilities
	Notes	$	-		$	-		$	252,911		$	252,911
	31-Dec-13	Level 1			Level 2			Level 3			Fair
											Value
	Assets
	Borrower loans receivable	$	-		$	-		$	226,094		$	226,094
	Restricted cash		14,032			1,441			-			15,473
	Loans held for sale		-			-			3,917			3,917
	Total assets	$	14,032		$	1,441		$	230,011		$	245,484
	Liabilities
	Notes	$	-		$	-		$	226,794		$	226,794
Borrower loans, notes and loans held for sale	'
	At September 30, 2014 and December 31, 2013, borrower loans, notes and loans held for sale (in thousands) were:
		Borrower Loans						Notes						Loans Held for Sale
		30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13
	Aggregate principal balance outstanding	$	256,026		$	225,953		$	(258,947	)	$	(229,271	)	$	16,360		$	3,915
	Fair value adjustments		(2,958	)		141			6,036			2,477			(10	)		2
	Fair value	$	253,068		$	226,094		$	(252,911	)	$	(226,794	)	$	16,350		$	3,917
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions	'
	Key economic assumptions and the sensitivity of the current fair value to immediate adverse changes in those assumptions at September 30, 2014 for Borrower Loans and Notes funded through the Note Channel are presented in the following table (in thousands):
		Borrower Loans			Notes
	Discount rate assumption:		9.36	%*		9.36	%*
	Resulting fair value from:
	100 basis point increase	$	247,738		$	244,736
	200 basis point increase		244,715			241,743
	Resulting fair value from:
	100 basis point decrease	$	253,975		$	250,912
	200 basis point decrease		257,188			254,085
	Default rate assumption:		7.4	%*		7.4	%*
	Resulting fair value from:
	10% higher default rates	$	247,275		$	244,275
	20% higher default rates		244,418			241,452
	Resulting fair value from:
	10% lower default rates	$	253,729		$	250,663
	20% lower default rates		256,584			253,493
	* Represents weighted average assumptions considering all credit grades.
Changes in Level 3 assets measured at fair value on a recurring basis	'
	The changes in Level 3 assets measured at fair value on a recurring basis are as follows (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance at January 1, 2013	$	166,900			(167,478	)		175			(403	)
	Originations		118,349			(118,349	)		71			71
	Principal repayments		(65,504	)		65,167			(106	)		(443	)
	Borrower loans sold to third parties		(80,786	)		-			-			(80,786	)
	Change in fair value on borrower loans and notes		(15,614	)		16,195			-			581
	Change in fair value of loans held for sale		-			-			(3	)		(3	)
	Balance at September 30, 2013	$	204,131			(204,465	)		137			(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance at January 1, 2014	$	226,094		$	(226,794	)	$	3,917		$	3,217
	Originations		823,841			(130,828	)		229,679			922,692
	Principal repayments		(88,944	)		89,336			(899	)		(507	)
	Borrower loans sold to third parties		(693,007	)		-			(216,336	)		(909,343	)
	Change in fair value on borrower loans and notes		(14,916	)		15,375			-			459
	Change in fair value of loans held for sale								(11	)		(11	)
	Balance at September 30, 2014	$	253,068		$	(252,911	)	$	16,350		$	16,507
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance July 1, 2013	$	187,124		$	(187,489	)	$	153		$	(212	)
	Originations		43,475			(43,475	)		25			25
	Principal repayments		(22,778	)		22,718			(41	)		(101	)
	Borrower loans sold to third parties		(50,623	)		-			-			(50,623	)
	Change in fair value on borrower loans and notes		(3,690	)		3,781			-			91
	Balance at September 30, 2013	$	204,131		$	(204,465	)	$	137		$	(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance July 1, 2014	$	246,203		$	(246,511	)	$	9,543		$	9,235
	Originations		372,027			(44,115	)		117,752			445,664
	Principal repayments		(31,226	)		31,620			(586	)		(192	)
	Borrower loans sold to third parties		(327,909	)		-			(110,350	)		(438,259	)
	Change in fair value on borrower loans and notes		(6,027	)		6,095			-			68
	Change in fair value of loans held for sale								(9	)		(9	)
	Balance at September 30, 2014	$	253,068		$	(252,911	)	$	16,350		$	16,507
Prosper Funding LLC [Member]	'
Borrower Loans and Borrower Payment Notes Held at Fair Value [Abstract]	'
Assets and liabilities measured at fair value on a recurring basis	'
	The following tables present the assets and liabilities measured at fair value on a recurring basis at September 30, 2014 and December 31, 2013 (in thousands):
	30-Sep-14	Level 1			Level 2			Level 3			Fair
											Value
	Assets
	Borrower loans receivable	$	-		$	-		$	253,068		$	253,068
	Certificates of deposit & restricted cash		7,448			1,273			-			8,721
	Loans held for sale		-			-			16,350			16,350
	Total assets	$	7,448		$	1,273		$	269,418		$	278.139
	Liabilities
	Notes	$	-		$	-		$	252,911		$	252,911
	31-Dec-13	Level 1			Level 2			Level 3			Fair
											Value
	Assets
	Borrower loans receivable	$	-		$	-		$	226,094		$	226,094
	Certificates of deposit & restricted cash		11,028			1,271			-			12,299
	Loans held for sale		-			-			3,917			3,917
	Total assets	$	11,028		$	1,271		$	230,011		$	242,310
	Liabilities
	Notes	$	-		$	-		$	226,794		$	226,794
Borrower loans, notes and loans held for sale	'
	At September 30, 2014 and December 31, 2013, borrower loans, notes and loans held for sale (in thousands) were:
		Borrower Loans						Notes						Loans Held for Sale
		30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13			30-Sep-14			31-Dec-13
	Aggregate principal balance outstanding	$	256,026		$	225,953		$	(258,947	)	$	(229,271	)	$	16,360		$	3,915
	Fair value adjustments		(2,958	)		141			6,036			2,477			(10	)		2
	Fair value	$	253,068		$	226,094		$	(252,911	)	$	(226,794	)	$	16,350		$	3,917
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions	'
	Key economic assumptions and the sensitivity of the current fair value to immediate adverse changes in those assumptions at September 30, 2014 for Borrower Loans and Notes funded through the Note Channel are presented in the following table (in thousands):
		Borrower Loans			Notes
	Discount rate assumption:		9.36	%*		9.36	%*
	Resulting fair value from:
	100 basis point increase	$	247,738		$	244,736
	200 basis point increase		244,715			241,743
	Resulting fair value from:
	100 basis point decrease	$	253,975		$	250,912
	200 basis point decrease		257,188			254,085
	Default rate assumption:		7.4	%*		7.4	%*
	Resulting fair value from:
	10% higher default rates	$	247,275		$	244,275
	20% higher default rates		244,418			241,452
	Resulting fair value from:
	10% lower default rates	$	253,729		$	250,663
	20% lower default rates		256,584			253,493
	* Represents weighted average assumptions considering all credit grades.
Changes in Level 3 assets measured at fair value on a recurring basis	'
	The changes in Level 3 assets measured at fair value on a recurring basis are as follows (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower Loans			Notes			Loans			Total
								Held for
								Sale
	Balance at January 1, 2013	$	-		$	-		$	-		$	-
	Assets transferred on February 1, 2013		170,344			(170,574	)		175			(55	)
	Originations		189,313			(108,527	)		71			80,857
	Principal repayments		(59,126	)		58,441			(106	)		(791	)
	Borrower loans sold to third parties		(80,786	)		-			-			(80,786	)
	Change in fair value on borrower loans and notes		(15,614	)		16,195			-			581
	Change in fair value of loans held for sale		-			-			(3	)		(3	)
	Balance at September 30, 2013	$	204,131		$	(204,465	)	$	137		$	(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower Loans			Notes			Loans			Total
								Held for
								Sale
	Balance at January 1, 2014	$	226,094		$	(226,794	)	$	3,917		$	3,217
	Originations		823,841			(130,828	)		229,679			922,692
	Principal repayments and credit losses		(88,944	)		89,336			(899	)		(507	)
	Borrower loans sold to third parties		(693,007	)		-			(216,336	)		(909,343	)
	Change in fair value on borrower loans and notes		(14,916	)		15,375			-			459
	Change in fair value of loans held for sale		-			-			(11	)		(11	)
	Balance at September 30, 2014	$	253,068		$	(252,911	)	$	16,350		$	16,507
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance July 1, 2013	$	187,124		$	(187,489	)	$	153		$	(212	)
	Originations		94,098			(43,475	)		25			50,648
	Principal repayments		(22,778	)		22,718			(41	)		(101	)
	Borrower loans sold to third parties		(50,623	)		-			-			(50,623	)
	Change in fair value on borrower loans and notes		(3,690	)		3,781			-			91
	Balance at September 30, 2013	$	204,131		$	(204,465	)	$	137		$	(197	)
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
		Borrower			Notes			Loans Held			Total
		Loans						for
								Sale
	Balance July 1, 2014	$	246,203		$	(246,511	)	$	9,543		$	9,235
	Originations		372,027			(44,115	)		117,752			445,664
	Principal repayments		(31,226	)		31,620			(586	)		(192	)
	Borrower loans sold to third parties		(327,909	)		-			(110,350	)		(438,259	)
	Change in fair value on borrower loans and notes		(6,027	)		6,095			-			68
	Change in fair value of loans held for sale		-			-			(9	)		(9	)
	Balance at September 30, 2014	$	253,068		$	(252,911	)	$	16,350		$	16,507

Organization_and_Business_Deta

Organization and Business (Details) (USD $)	3 Months Ended	9 Months Ended							1 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013		Dec. 31, 2013		Dec. 31, 2012		31-May-14	Sep. 30, 2014
	State	State							Series C Preferred Stock [Member]	Series C Preferred Stock [Member]
Organization and Business [Abstract]	'	'	'		'		'		'	'
Percentage of notes allowed for members to purchase (in hundredth)	'	100.00%	'		'		'		'	'
Retained Earnings (Accumulated Deficit)	($118,764,000)	($118,764,000)	'		($104,042,000)	[1]	'		'	'
Cash and cash equivalents	53,267,000	53,267,000	29,300,000	[1]	18,339,000	[1]	2,300,000	[1]	'	'
Additional cash and cash equivalents	51,400,000	'	'		'		'		'	'
Repurchase of preferred shares	'	18,500,000	'		'		'		'	'
Class of Stock [Line Items]	'	'	'		'		'		'	'
Proceeds from issuance of preferred stock	'	$69,958,000	$44,775,000	[1]	'		'		$69,900,000	$69,958,000
Number of States and District Platform is Open to Investors	31	31	'		'		'		'	'
Additional Number of States and District Platform is Open to Borrowers	47	47	'		'		'		'	'
[1]	Please see note 14

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended		11 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Dec. 31, 2013
			Risk
Certain Risks and Concentrations [Abstract]	'	'	'	'	'	'
Number of significant types of risks	'	'	2	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Borrower loans receivable	$253,068,000	'	$253,068,000	'	$253,068,000	$226,094,000	[1]
Loans held for sale	16,350,000	'	16,350,000	'	16,350,000	3,917,000	[1]
Liabilities [Abstract]	'	'	'	'	'	'
Notes	252,911,000	'	252,911,000	'	252,911,000	226,794,000	[1]
Credit Rating By Risk [Line Items]	'	'	'	'	'	'
Servicing fee (in hundredths)	'	'	1.00%	'	'	'
Marketing and Advertising Expense [Abstract]	'	'	'	'	'	'
Advertising costs	'	'	25,700,000	10,100,000	'	'
Stock-Based Compensation [Abstract]	'	'	'	'	'	'
Vesting period of award	'	'	'4 years	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	40,229,049	29,816,999	40,229,049	29,816,999	'	'
Reverse stock split, shares issued (in shares)	'	'	'	'	1	'
Conversion of Stock, Shares Converted	'	'	'	'	10	'
Convertible Preferred Stock [Member]	'	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	30,699,957	22,156,922	30,699,957	22,156,922	'	'
Warrant [Member]	'	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	220,882	218,797	220,882	218,797	'	'
Stock Options [Member]	'	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	4,540,101	979,483	4,540,101	979,483	'	'
Restricted Stock [Member]	'	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	'	'	4,768,109	6,641,797	'	'
Minimum [Member]	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'
Property and equipment, estimated useful life	'	'	'3 years	'	'	'
Credit Rating By Risk [Line Items]	'	'	'	'	'	'
Origination fee percentage (in hundredths)	'	'	1.00%	'	'	'
Maximum [Member]	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'
Property and equipment, estimated useful life	'	'	'7 years	'	'	'
Credit Rating By Risk [Line Items]	'	'	'	'	'	'
Origination fee percentage (in hundredths)	'	'	5.00%	'	'	'
Recurring [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Borrower loans receivable	253,068,000	'	253,068,000	'	253,068,000	226,094,000
Restricted cash	16,951,000	'	16,951,000	'	16,951,000	15,473,000
Loans held for sale	16,350,000	'	16,350,000	'	16,350,000	3,917,000
Total assets	286,369,000	'	286,369,000	'	286,369,000	245,484,000
Liabilities [Abstract]	'	'	'	'	'	'
Notes	252,911,000	'	252,911,000	'	252,911,000	226,794,000
Recurring [Member] | Level 1 Inputs [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Borrower loans receivable	0	'	0	'	0	0
Restricted cash	15,577,000	'	15,577,000	'	15,577,000	14,032,000
Loans held for sale	0	'	0	'	0	0
Total assets	15,577,000	'	15,577,000	'	15,577,000	14,032,000
Liabilities [Abstract]	'	'	'	'	'	'
Notes	0	'	0	'	0	0
Recurring [Member] | Level 2 Inputs [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Borrower loans receivable	0	'	0	'	0	0
Restricted cash	1,374,000	'	1,374,000	'	1,374,000	1,441,000
Loans held for sale	0	'	0	'	0	0
Total assets	1,374,000	'	1,374,000	'	1,374,000	1,441,000
Liabilities [Abstract]	'	'	'	'	'	'
Notes	0	'	0	'	0	0
Recurring [Member] | Level 3 Inputs [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Borrower loans receivable	253,068,000	'	253,068,000	'	253,068,000	226,094,000
Restricted cash	0	'	0	'	0	0
Loans held for sale	16,350,000	'	16,350,000	'	16,350,000	3,917,000
Total assets	269,418,000	'	269,418,000	'	269,418,000	230,011,000
Liabilities [Abstract]	'	'	'	'	'	'
Notes	$252,411,000	'	$252,411,000	'	$252,411,000	$226,794,000
[1]	Please see note 14

Borrower_Loans_and_Notes_Held_2

Borrower Loans and Notes Held at Fair Value (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Borrower Loans [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Aggregate principal balance outstanding	$256,026	$225,874
Fair value adjustment	-2,958	141
Fair value	253,068	226,094
Notes [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Aggregate principal balance outstanding	-258,947	-229,271
Fair value adjustment	6,036	2,477
Fair value	-252,911	-226,794
Loans Held for Sale [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Aggregate principal balance outstanding	16,360	3,915
Fair value adjustment	-10	2
Fair value	$16,350	$3,917

Borrower_Loans_and_Notes_Held_3

Borrower Loans and Notes Held at Fair Value, Fair Value Assumptions, Borrower Loans (Details) (Borrower Loans [Member], USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Discount rate assumption [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount rate assumption (in hundredths)	9.36%	[1]
Discount rate assumption [Member] | 100 Basis Point Increase [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	247,738
Discount rate assumption [Member] | 200 Basis Point Increase [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	244,715
Discount rate assumption [Member] | 100 Basis Point Decrease [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	253,975
Discount rate assumption [Member] | 200 Basis Point Decrease [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	257,188
Default rate assumption [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount rate assumption (in hundredths)	7.40%	[1]
Default rate assumption [Member] | 10% Higher [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	247,275
Default rate assumption [Member] | 20% Higher [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	244,418
Default rate assumption [Member] | 10% Lower [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	253,729
Default rate assumption [Member] | 20% Lower [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Borrower loans	256,584
[1]	Represents weighted average assumptions considering all credit grades.

Borrower_Loans_and_Notes_Held_4

Borrower Loans and Notes Held at Fair Value, Fair Value Assumptions, Notes (Details) (Notes [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Discount rate assumption [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Discount rate assumption (in hundredths)	9.36%	[1]
Discount rate assumption [Member] | 100 Basis Point Increase [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	244,736
Discount rate assumption [Member] | 200 Basis Point Increase [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	241,743
Discount rate assumption [Member] | 100 Basis Point Decrease [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	250,912
Discount rate assumption [Member] | 200 Basis Point Decrease [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	254,085
Default rate assumption [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Discount rate assumption (in hundredths)	7.40%	[1]
Default rate assumption [Member] | 10% Higher [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	244,275
Default rate assumption [Member] | 20% Higher [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	241,452
Default rate assumption [Member] | 10% Lower [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	250,663
Default rate assumption [Member] | 20% Lower [Member]	'
Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]	'
Notes	253,493
[1]	Represents weighted average assumptions considering all credit grades.

Borrower_Loans_and_Notes_Held_5

Borrower Loans and Notes Held at Fair Value, Fair Value Measurements Using Significant Unobservable Inputs (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in Level 3 assets measured at fair value on a recurring basis [Abstract]	'	'	'	'
Beginning balance, Total	$9,235,000	($212,000)	$3,217,000	($403,000)
Originations, Total	445,664,000	50,648,000	922,692,000	80,857,000
Principal repayments, Total	-192,000	-101,000	-507,000	-443,000
Borrower loans sold to third parties, Total	-438,259,000	-50,623,000	-909,343,000	-80,786,000
Change in fair value on borrower loans and notes, Total	68,000	91,000	459,000	581,000
Change in fair value of loans held for sale, Total	-9,000	'	-11,000	-3,000
Ending balance, Total	16,507,000	-197,000	16,507,000	-197,000
Minimum number of days for which loans originated were delinquent	'	'	'90 days	'
Aggregate principal amount of loans originated	1,500,000	'	1,500,000	'
Fair value of loans originated	140,000	'	140,000	'
Notes [Member]	'	'	'	'
Changes in Level 3 assets measured at fair value on a recurring basis [Abstract]	'	'	'	'
Beginning balance, Liabilities	-246,511,000	-187,489,000	-226,794,000	-167,478,000
Originations, Liabilities	-44,115,000	-43,475,000	-130,828,000	-118,349,000
Principal repayments, Liabilities	31,620,000	22,718,000	89,336,000	65,167,000
Borrower loans sold to third parties, Liabilities	0	0	0	0
Change in fair value on borrower loans and notes, Liabilities	6,095,000	3,781,000	15,375,000	16,195,000
Change in fair value of loans held for sale, Liability	'	'	'	0
Ending balance, Liabilities	-252,911,000	-204,465,000	-252,911,000	-204,465,000
Borrower Loans [Member]	'	'	'	'
Changes in Level 3 assets measured at fair value on a recurring basis [Abstract]	'	'	'	'
Beginning balance, Assets	246,203,000	187,124,000	226,094,000	166,900,000
Originations, Assets	372,027,000	94,098,000	823,841,000	199,135,000
Principal repayments, Assets	-31,226,000	-22,778,000	-88,944,000	-65,504,000
Borrower loans sold to third parties, Assets	-327,909,000	-50,623,000	-693,007,000	-80,786,000
Change in fair value on borrower loans and notes, Assets	-6,027,000	-3,690,000	-14,916,000	-15,614,000
Change in fair value of loans held for sale, Asset	'	'	'	0
Ending balance, Assets	253,068,000	204,131,000	253,068,000	204,131,000
Loans Held for Sale [Member]	'	'	'	'
Changes in Level 3 assets measured at fair value on a recurring basis [Abstract]	'	'	'	'
Beginning balance, Assets	9,543,000	153,000	3,917,000	175,000
Originations, Assets	117,752,000	25,000	229,679,000	71,000
Principal repayments, Assets	-586,000	-41,000	-899,000	-106,000
Borrower loans sold to third parties, Assets	-110,350,000	0	-216,336,000	0
Change in fair value on borrower loans and notes, Assets	0	0	0	0
Change in fair value of loans held for sale, Asset	-9,000	'	-11,000	-3,000
Ending balance, Assets	$16,350,000	$137,000	$16,350,000	$137,000

Loan_Servicing_Note_Details

Loan Servicing Note (Details) (USD $)	9 Months Ended		12 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2013		Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Jun. 30, 2013	Dec. 31, 2012
					Loan servicing assets [Member]	Loan servicing assets [Member]	Loan servicing liabilities [Member]	Loan servicing liabilities [Member]	Loan servicing liabilities [Member]	Loan servicing liabilities [Member]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]	'		'		'	'	'	'	'	'
Discount rate (in hundredths)	9.60%	[1]	9.90%	[1]	'	'	'	'	'	'
Default rate (in hundredths)	5.50%	[1]	5.60%	[1]	'	'	'	'	'	'
Market servicing rate (in hundredths)	0.65%		0.65%		'	'	'	'	'	'
Servicing Asset at Amortized Cost, Balance [Roll Forward]	'		'		'	'	'	'	'	'
Amortized cost at beginning of period	'		'		$968	$260	'	'	'	'
Additions	'		'		1,044	1,873	'	'	'	'
Less Amortization	'		'		-157	-278	'	'	'	'
Amortized cost at end of period	'		'		1,855	1,855	'	'	'	'
Servicing Liability at Amortized Cost [Roll Forward]	'		'		'	'	'	'	'	'
Amortized cost at beginning of the period	'		'		'	'	'	'	857	339
Additions	'		'		'	'	414	1,064	'	'
Less Amortization	'		'		'	'	-140	-272	'	'
Amortized cost at end of the period	'		'		'	'	$1,131	$1,131	$857	$339
[1]	Represents weighted average or aggregate assumptions considering all credit grades.

Loans_Held_for_Sale_Details

Loans Held for Sale (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loans Held for Sale [Abstract]	'	'	'
Loans held for sale	$16,350,000	'	$3,917,000	[1]
Loans originated	229,700,000	70,000	'
Borrower loans sold to third party	$216,300,000	$0	'
[1]	Please see note 14

Repurchase_and_Indemnification1

Repurchase and Indemnification Obligation (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Repurchase and Indemnification Obligation [Abstract]	'	'	'	'	'
Provision for repurchase and indemnification obligation	$30,000	$10,000	$140,000	$20,000	'
Repurchase and indemnification obligation	$157,000	'	$157,000	'	$32,000	[1]
[1]	Please see note 14

Net_Loss_Per_Share_Details

Net Loss Per Share (Details) (USD $)	3 Months Ended		9 Months Ended		11 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014
Numerator [Abstract]	'	'	'	'	'
Net loss available to common stockholders for basic and diluted EPS	($12,168)	($4,963)	($14,710)	($24,815)	'
Denominator [Abstract]	'	'	'	'	'
Weighted average shares used in computing basic and diluted net loss per share (in shares)	9,280,334	6,927,648	8,740,785	6,119,987	'
Basic and diluted net loss per share (in dollars per share)	($1.31)	($0.72)	($1.68)	($4.05)	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'
Reverse stock split, shares issued (in shares)	'	'	'	'	1
Reverse stock split, shares converted (in shares)	'	'	'	'	10
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	40,229,049	29,816,999	40,229,049	29,816,999	'
Convertible Preferred Stock Issued and Outstanding [Member]	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	30,699,957	22,156,922	30,699,957	22,156,922	'
Stock Options Issued and Outstanding [Member]	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	4,540,101	979,483	4,540,101	979,483	'
Unvested Stock Options Exercised [Member]	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	4,768,109	6,461,797	4,768,109	6,461,797	'
Warrants Issued and Outstanding [Member]	'	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'
Total common stock equivalents excluded from diluted net loss per common share computation (in shares)	220,882	218,797	220,882	218,797	'

Convertible_Preferred_Stock_an2

Convertible Preferred Stock and Stockholders Equity (Details) (USD $)

9 Months Ended

11 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Jul. 16, 2014

Jun. 18, 2014

Jan. 31, 2013

Sep. 30, 2014

15-May-14

Jan. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

15-May-14

Jul. 16, 2014

Jun. 18, 2014

Sep. 30, 2013

Sep. 30, 2014

15-May-14

Jul. 16, 2014

15-May-14

Sep. 30, 2014

31-May-14

Sep. 30, 2014

15-May-14

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

15-May-14

Dec. 31, 2013

VotingRight

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A 1 Convertible Preferred Stock [Member]

Series A 1 Convertible Preferred Stock [Member]

Series A 1 [Member]

Series A 1 [Member]

Series B Preferred Stock [Member]

Series B Preferred Stock [Member]

Series B Preferred Stock [Member]

Series B Preferred Stock [Member]

Series B Preferred Stock [Member]

Preferred Stock [Member]

Preferred Stock [Member]

Series A, B and C '13 Convertible Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Common Stock [Member]

Common Stock [Member]

Common Stock Warrant [Member]

Common Stock Warrant [Member]

Common Stock Warrant [Member]

Times

Class of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued (in shares)

'

'

'

'

'

1,392,757

13,868,152

'

'

5,117,182

'

'

'

'

1,392,757

8,288,734

'

'

'

'

'

4,880,954

'

'

'

'

'

'

'

Convertible preferred stock, price per share (in dollars per share)

'

'

'

'

'

$14.36

$1.44

'

'

$0.01

'

'

'

'

$14.36

$3.02

'

'

'

'

'

$14.36

'

'

'

'

'

'

'

Proceeds from issuance of preferred stock

$69,958,000

$44,775,000

[1]

'

'

'

'

$19,800,000

'

'

'

'

'

'

'

'

$24,900,000

'

'

'

'

'

$69,900,000

$69,958,000

'

'

'

'

'

'

Converted ratio from preferred stock to common stock

1

'

1

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock convertible ratio if preferred stock did not participate

10

'

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issued during the period (in shares)

'

'

'

'

156,508

'

'

'

'

'

'

'

'

1,133,558

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

Repurchase of Preferred Stock

-18,525,000

0

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18,525,000

'

'

'

'

'

'

'

'

'

'

Convertible Preferred Stock [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, par value (in dollars per share)

'

'

'

'

'

'

'

$0.01

'

'

'

$0.01

'

'

'

'

$0.01

'

'

'

'

'

$0.01

'

'

'

'

'

'

Preferred stock, shares authorized (in shares)

'

'

'

'

'

'

'

13,711,644

'

'

'

4,952,183

'

'

'

'

8,288,734

'

'

'

30,699,957

'

4,880,954

'

'

'

'

'

'

Convertible preferred stock, shares issued (in shares)

'

'

'

'

'

'

'

13,711,644

'

'

'

4,952,183

'

'

'

'

8,288,734

'

'

'

30,699,957

'

4,880,954

'

'

'

'

'

'

Convertible preferred stock, shares outstanding (in shares)

'

'

'

'

'

'

'

13,711,644

'

'

'

4,952,183

'

'

'

'

8,288,734

'

'

'

30,699,957

'

4,880,954

'

'

'

'

'

'

Convertible preferred stock, liquidation preference

'

'

'

'

'

'

'

19,774

'

'

'

49,522

'

'

'

'

21,581

'

'

'

160,952

'

70,075

'

'

'

'

'

'

Dividends [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liquidation preference per share (in dollars per share)

'

'

'

'

'

'

'

$1.44

'

'

'

$10

'

'

'

'

$3.02

'

'

'

'

'

$14.36

'

'

'

'

'

'

Value prior to closing of underwritten initial public offering

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

750,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate proceeds to the entity before deducting underwriters commissions and expenses

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of holders of preferred stock required to request for conversion, minimum (in hundredths)

'

'

'

'

'

'

'

'

'

'

'

14.00%

'

'

'

'

60.00%

'

'

'

'

'

'

'

'

'

'

'

'

Conversion ratio of preferred stock into prosper common stock

'

'

'

'

'

'

'

1

'

'

1,000,000

'

'

'

'

'

1

'

'

'

'

'

1

'

'

'

'

'

'

Liquidation Rights [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of times the shareholders are entitled to receive the original issue price

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reverse stock split, shares issued (in shares)

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reverse stock split, shares converted (in shares)

'

'

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares authorized (in shares)

47,928,883

'

47,928,883

41,487,465

'

'

'

'

13,868,152

'

'

'

5,117,182

'

'

'

'

8,288,734

'

32,155,022

'

'

'

4,880,954

80,083,905

'

'

47,928,883

'

Common stock, par value (in dollars per share)

$0.01

'

$0.01

$0.01

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.01

'

'

'

'

'

'

'

$0.01

'

Common stock, shares issued (in shares)

14,421,876

'

14,421,876

13,588,803

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,216,600

'

13,720,214

Common stock, shares outstanding (in shares)

14,421,876

'

14,421,876

13,588,803

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,216,600

'

13,720,214

Number of voting rights per share of common stock held

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Nonemployees [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options granted to nonemployee for services (in shares)

0

'

'

47,601

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock Issued upon Exercise of Stock Options [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise of stock options (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

853,151

7,327,959

'

'

'

Cash proceeds from exercise of options

72,000

207,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

530,000

860,000

'

'

'

Exercise of Nonvested Stock Options (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

796,828

6,499,463

'

'

'

Unvested restricted stock outstanding (in shares)

4,768,109

'

4,768,109

5,594,134

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchase upon termination of employment (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

116,018

'

'

'

'

Stock repurchase upon termination of employment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$20,000

'

'

'

'

Common Stock Issued upon Exercise of Stock Warrants [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise of common stock warrants (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

95,940

'

'

'

'

[1]

Please see note 14

Stock_Option_Plan_and_Compensa2

Stock Option Plan and Compensation (Details) (USD $)

3 Months Ended

9 Months Ended

11 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Jun. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2005

$0.10 - $0.10 [Member]

$0.57 - $0.57 [Member]

$1.20 - $1.20 [Member]

$1.70 - $1.70 [Member]

$2.00 - $2.00 [Member]

$5.00 to $5.00 [Member]

$5.60 - $5.60 [Member]

$0.10 - $19.40 [Member]

$5.65 - $5.65 [Member]

Incentive Stock Options [Member]

Nonstatutory Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

2005 Stock Option Plan [Member]

2005 Stock Option Plan [Member]

2005 Stock Option Plan [Member]

2005 Stock Option Plan [Member]

2005 Stock Option Plan [Member]

2005 Stock Option Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price as percentage of fair value of entity's common stock on grant date, minimum (in hundredths)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of stock options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$100,000

'

'

'

'

'

'

'

'

'

'

'

Percentage of entity common stock held by stockholders on option grant date, minimum (in hundredths)

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price as percentage of fair value of entity common stock if stockholders hold minimum 10% of entity stock, minimum (in hundredths)

'

'

110.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting period of the options

'

'

'4 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Options exercisable, maximum period

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of options made available in pool (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,195,255

'

12,634,791

1,523,966

1,353,966

187,946

Additional number of options made available in pool (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,560,464

'

11,110,825

170,000

455,087

'

Reverse stock split, shares issued (in shares)

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reverse stock split, shares converted (in shares)

'

'

'

'

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Early exercised options, unvested [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of January 1, 2014 (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,594,134

5,594,134

'

'

'

'

Exercise of non-vested stock options (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

796,828

'

'

'

'

Repurchase of restricted stock (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-111,095

'

'

'

'

Restricted stock vested (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,511,758

'

'

'

'

Balance as of Sept 30, 2014 (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,768,109

5,594,134

'

'

'

Weighted average exercise price [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of January 1, 2014 (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.11

$0.11

'

'

'

'

Exercise of non-vested stock options (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.57

'

'

'

'

Repurchase of restricted stock (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

($0.10)

'

'

'

'

Restricted stock vested (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

($0.11)

'

'

'

'

Balance as of Sept 30, 2014 (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.18

$0.11

'

'

'

Options Issued and Outstanding [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

938,585

938,585

'

'

'

'

Options granted (weighted average fair value of $0.30) (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,669,091

'

'

'

'

Options exercised - vested (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-56,323

'

'

'

'

Options exercised - nonvested (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-796,828

'

'

'

'

Options canceled (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-214,424

'

'

'

'

Ending balance (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,540,101

938,585

'

'

'

Options outstanding and exercisable (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,891,438

'

'

'

'

Weighted-Average Exercise Price [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1.39

$1.39

'

'

'

'

Options granted (weighted average fair value of $0.30) (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1.24

'

'

'

'

Options exercised - vested (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1.28

'

'

'

'

Options exercised - nonvested (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.57

'

'

'

'

Options canceled (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.53

'

'

'

'

Ending balance (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.91

$1.39

'

'

'

Options outstanding and exercisable (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1.40

'

'

'

'

Weighted average fair value (in dollars per share)

$0.30

'

$0.30

'

$0.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of stock option awards [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Volatility of common stock (in hundredths)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

67.47%

69.57%

69.42%

69.56%

'

'

'

'

'

'

Risk-free interest rate (in hundredths)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.92%

1.39%

1.91%

1.90%

'

'

'

'

'

'

Expected life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years 10 months 24 days

[1]

'5 years 9 months 18 days

[1]

'5 years 10 months 24 days

[1]

'5 years 9 months 18 days

[1]

'

'

'

'

'

'

Dividend yield (in hundredths)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

0.00%

0.00%

0.00%

'

'

'

'

'

'

Weighted-average fair value of grants (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.46

$0.10

$0.76

$0.01

'

'

'

'

'

'

Options Outstanding [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Range of Exercise Prices, minimum (in dollars per share)

'

'

'

'

'

$0.10

$0.57

$1.20

$1.70

$2

$5

$5.60

$0.10

$5.65

'

'

'

'

'

'

'

'

'

'

'

'

Range of Exercise Prices, maximum (in dollars per share)

'

'

'

'

'

$0.10

$0.57

$1.20

$1.70

$2

$5

$5.60

$19.40

$5.65

'

'

'

'

'

'

'

'

'

'

'

'

Number Outstanding (in shares)

'

'

'

'

'

170,728

3,203,051

133,334

99,593

287,933

7,000

18,250

4,540,101

620,212

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Avg. Remaining Life

'

'

'

'

'

'8 years 10 months 13 days

'9 years 4 months 13 days

'6 years 11 months 16 days

'7 years 7 months 24 days

'5 years 9 months 25 days

'2 years

'4 years 11 months 16 days

'9 years 0 months 22 days

'9 years 10 months 13 days

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Avg. Exercise Price (in dollars per share)

'

'

'

'

'

$0.10

$0.57

$1.20

$1.70

$2

$5

$5.60

$1.41

$5.65

'

'

'

'

'

'

'

'

'

'

'

'

Options Exercisable [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Exercisable (in shares)

'

'

'

'

'

60,113

1,339,911

117,435

61,049

287,680

7,000

18,250

1,891,438

0

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Avg. Exercise Price (in dollars per share)

'

'

'

'

'

$0.10

$0.57

$1.20

$1.70

$2

$5

$5.60

$1.40

$5.65

'

'

'

'

'

'

'

'

'

'

'

'

Options outstanding vested and expected to vest (in shares)

3,990,512

'

3,990,512

'

3,990,512

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Options outstanding vested and expected to vest, weighted-average contractual life

'

'

'9 years 0 months 22 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contractual term

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation

270,000

100,000

760,000

180,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized expense related to unvested stock-based awards

$2,400,000

'

$2,400,000

'

$2,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Remaining weighted average vesting period

'

'

'3 years 3 months 18 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

For nonemployee stock option awards, the expected life is the contractual term of the award, which is generally ten years.

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Taxes [Abstract]	'	'	'	'
Income tax expense	$0	$0	$0	$0

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013		Nov. 30, 2008	Oct. 16, 2008
	State		Installment
			State
Future minimum rental payments [Abstract]	'	'	'	'	'		'	'
Remaining three months of 2014	$139,000	'	$139,000	'	'		'	'
2015	3,160,000	'	3,160,000	'	'		'	'
2016	3,757,000	'	3,757,000	'	'		'	'
2017	3,866,000	'	3,866,000	'	'		'	'
2018	3,978,000	'	3,978,000	'	'		'	'
2019	4,093,000	'	4,093,000	'	'		'	'
Thereafter	12,981,000	'	12,981,000	'	'		'	'
Total future operating lease obligations	31,974,000	'	31,974,000	'	'		'	'
Rental expense under premises-operating lease arrangements	700,000	200,000	1,000,000	500,000	'		'	'
Securities Law Compliance [Abstract]	'	'	'	'	'		'	'
Amount of loans sold to lender members	'	'	'	'	'		'	178,000,000
Aggregate amount of payment for penalties	'	'	'	'	'		1,000,000	'
Number of states with which company entered into consent order	34	'	34	'	'		'	'
Aggregate amount paid by entity for penalties to states	470,000	'	470,000	'	'		'	'
Accrued contingent liability associated with states not entered into consent orders	250,000	'	250,000	'	250,000		'	'
Maximum fee liability taken to estimate accrued contingent liability	1,000,000	'	1,000,000	'	'		'	'
Agreed amount of settlement liability payable to plaintiffs	'	'	10,000,000	'	'		'	'
Number of annual installments paid to plaintiffs	'	'	4	'	'		'	'
Settlement installment due in 2014	2,000,000	'	2,000,000	'	'		'	'
Settlement installment due in 2015	2,000,000	'	2,000,000	'	'		'	'
Settlement installment due in 2016	3,000,000	'	3,000,000	'	'		'	'
Settlement installment due in 2017	3,000,000	'	3,000,000	'	'		'	'
Class action settlement liability	7,830,000	'	7,830,000	'	9,739,000	[1]	'	'
Claims filed, appeal to resend court findings against Greenwhich	'	'	$2,000,000	'	'		'	'
[1]	Please see note 14

Related_Parties_Details

Related Parties (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014
Related Parties [Abstract]	'	'	'
Minimum percentage of voting securities considered for related parties (in hundredths)	'	'	5.00%
Aggregate amount of Borrower Notes and loans purchased and the income earned [Abstract]	'	'	'
Aggregate Amount of Notes Borrower Loans Purchased	$7,298,000	$5,384,000	$7,298,000
Income Earned on Notes and Borrower Loans	164,000	234,000	'
Aggregate amount of notes purchased, amount charge off	410,000	360,000	410,000
Aggregate amount of notes purchased, percentage charge off (in hundredths)	6.00%	7.00%	6.00%
Servicing fees revenue earned by entity	10,000	10,000	'
Executive Officers and Management [Member]	'	'	'
Aggregate amount of Borrower Notes and loans purchased and the income earned [Abstract]	'	'	'
Aggregate Amount of Notes Borrower Loans Purchased	2,100,000	806,000	2,100,000
Income Earned on Notes and Borrower Loans	83,000	30,000	'
Directors [Member]	'	'	'
Aggregate amount of Borrower Notes and loans purchased and the income earned [Abstract]	'	'	'
Aggregate Amount of Notes Borrower Loans Purchased	5,198,000	4,578,000	5,198,000
Income Earned on Notes and Borrower Loans	$81,000	$204,000	'

Postretirement_Benefit_Plans_D

Post-retirement Benefit Plans (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Post-retirement Benefit Plans [Abstract]	'
Deferred compensation arrangement with eligible employees, percentage (in hundredths)	90.00%
Employer contribution during the period	$0.38

Prior_Period_Adjustments_Detai

Prior Period Adjustments (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013		Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Overstatement of gain recognized on sale of loans	'	$223		'	'	'
Understatement of loan servicing assets and liabilities	'	223		'	'	'
Amount originally included in borrower loans receivable, fair value	'	144		'	'	'
Amount reclassified from adjusted gross servicing asset	'	260		'	'	'
Reclassification, accounts payable and other liabilities	'	339		'	'	'
Overstatement of class action settlement liability	'	261		'	'	'
Reclassification, Convertible Preferred Stock to Temporary Equity	'	45,118		'	'	'
Understatement of Cash Flows from Operating Activities	'	369		'	12,069	-17,297	[1]
Overstatement of Cash Flows from Investing Activities	'	12,080		'	-46,519	-54,513	[1]
Understatement of Cash Flows from Financing Acitivities	'	11,711		'	93,516	98,810	[1]
Condensed Consolidated Balance Sheets (Unaudited) [Abstract]	'	'		'	'	'
Borrower loans receivable at fair value	253,068	226,094	[1]	'	253,068	'
Prepaid and other assets	5,106	968	[1]	'	5,106	'
Total Assets	351,956	268,405	[1]	'	351,956	'
Accounts payable and accrued liabilities	13,311	7,076	[1]	'	13,311	'
Class action settlement liability	7,830	9,739	[1]	'	7,830	'
Repurchase liability for unvested restricted stock Awards	837	559	[1]	'	837	'
Total Liabilities	275,046	244,200	[1]	'	275,046	'
Additional paid-in capital	84,428	83,345	[1]	'	84,428	'
Retained Earnings (Accumulated Deficit)	-118,764	-104,042	[1]	'	-118,764	'
Total Stockholders' Equity	-34,533	-20,913	[1]	'	-34,533	'
Cash flows from operating activities:	'	'		'	'	'
Net Income (Loss)	2,724	'		-4,963	182	-24,815	[1]
Change in fair value of borrower loans	'	'		'	14,916	15,614	[1]
Change in fair value of notes	'	'		'	15,375	16,195	[1]
Restricted cash except for those related to investing activities	'	'		'	0	2,000	[1]
Loans held for sale at fair value	'	'		'	12,464	-35	[1]
Cash flows from investing activities:	'	'		'	'	'
Origination of Borrower Loans Held at Fair Value	'	'		'	-823,841	-199,135	[1]
Repayment of Borrower Loans Held at Fair Value	'	'		'	88,944	65,504	[1]
Maturities of short term investments	'	'		'	0	1,000	[1]
Cash flows from financing activities:	'	'		'	'	'
Proceeds from issuance of notes held at fair value	'	'		'	130,828	118,349	[1]
Payment of notes held at fair value	'	'		'	89,336	65,167	[1]
As Previous Reported [Member]	'	'		'	'	'
Condensed Consolidated Balance Sheets (Unaudited) [Abstract]	'	'		'	'	'
Borrower loans receivable at fair value	'	226,238		'	'	'
Prepaid and other assets	'	708		'	'	'
Total Assets	'	268,289		'	'	'
Accounts payable and accrued liabilities	'	6,737		'	'	'
Class action settlement liability	'	10,000		'	'	'
Repurchase liability for unvested restricted stock Awards	'	609		'	'	'
Total Liabilities	'	244,172		'	'	'
Convertible preferred stock	'	0		'	'	'
Convertible preferred stock	'	273		'	'	'
Additional paid-in capital	'	128,140		'	'	'
Retained Earnings (Accumulated Deficit)	'	-104,080		'	'	'
Total Stockholders' Equity	'	24,117		'	'	'
Total Liabilities, Convertible Preferred Stock and Stockholders' Equity	'	268,289		'	'	'
Cash flows from operating activities:	'	'		'	'	'
Net Income (Loss)	'	'		'	'	-24,815
Change in fair value of borrower loans	'	'		'	'	3,903
Change in fair value of notes	'	'		'	'	-4,484
Restricted cash except for those related to investing activities	'	'		'	'	-2,334
Loans held for sale at fair value	'	'		'	'	0
Net cash used in operating activities	'	'		'	'	-17,666
Cash flows from investing activities:	'	'		'	'	'
Origination of Borrower Loans Held at Fair Value	'	'		'	'	-118,349
Repayment of Borrower Loans Held at Fair Value	'	'		'	'	77,215
Maturities of short term investments	'	'		'	'	0
Repayments of loans held for investment at fair value and credit losses	'	'		'	'	106
Origination of loans held for investment at fair value	'	'		'	'	-71
Increase (Decrease) in Restricted Cash and Investments	'	'		'	'	0
Net cash used in investing activities	'	'		'	'	-42,433
Cash flows from financing activities:	'	'		'	'	'
Proceeds from issuance of notes held at fair value	'	'		'	'	118,349
Payment of notes held at fair value	'	'		'	'	-76,878
Net cash provided by financing activities	'	'		'	'	87,099
Adjustments [Member]	'	'		'	'	'
Condensed Consolidated Balance Sheets (Unaudited) [Abstract]	'	'		'	'	'
Borrower loans receivable at fair value	'	-144		'	'	'
Prepaid and other assets	'	260		'	'	'
Total Assets	'	116		'	'	'
Accounts payable and accrued liabilities	'	339		'	'	'
Class action settlement liability	'	-261		'	'	'
Repurchase liability for unvested restricted stock Awards	'	-50		'	'	'
Total Liabilities	'	28		'	'	'
Convertible preferred stock	'	45,118		'	'	'
Convertible preferred stock	'	-273		'	'	'
Additional paid-in capital	'	-44,795		'	'	'
Retained Earnings (Accumulated Deficit)	'	38		'	'	'
Total Stockholders' Equity	'	-45,030		'	'	'
Total Liabilities, Convertible Preferred Stock and Stockholders' Equity	'	14,146		'	'	'
Cash flows from operating activities:	'	'		'	'	'
Net Income (Loss)	'	'		'	'	0
Change in fair value of borrower loans	'	'		'	'	11,711
Change in fair value of notes	'	'		'	'	-11,711
Restricted cash except for those related to investing activities	'	'		'	'	334
Loans held for sale at fair value	'	'		'	'	35
Net cash used in operating activities	'	'		'	'	369
Cash flows from investing activities:	'	'		'	'	'
Origination of Borrower Loans Held at Fair Value	'	'		'	'	-80,786
Repayment of Borrower Loans Held at Fair Value	'	'		'	'	-11,711
Maturities of short term investments	'	'		'	'	80,786
Repayments of loans held for investment at fair value and credit losses	'	'		'	'	-106
Origination of loans held for investment at fair value	'	'		'	'	71
Increase (Decrease) in Restricted Cash and Investments	'	'		'	'	-334
Net cash used in investing activities	'	'		'	'	-12,080
Cash flows from financing activities:	'	'		'	'	'
Proceeds from issuance of notes held at fair value	'	'		'	'	0
Payment of notes held at fair value	'	'		'	'	11,711
Net cash provided by financing activities	'	'		'	'	11,711
As revised [Member]	'	'		'	'	'
Condensed Consolidated Balance Sheets (Unaudited) [Abstract]	'	'		'	'	'
Borrower loans receivable at fair value	'	226,094		'	'	'
Prepaid and other assets	'	968		'	'	'
Total Assets	'	268,405		'	'	'
Accounts payable and accrued liabilities	'	7,076		'	'	'
Class action settlement liability	'	9,739		'	'	'
Repurchase liability for unvested restricted stock Awards	'	559		'	'	'
Total Liabilities	'	244,200		'	'	'
Convertible preferred stock	'	45,118		'	'	'
Convertible preferred stock	'	0		'	'	'
Additional paid-in capital	'	83,345		'	'	'
Retained Earnings (Accumulated Deficit)	'	-104,042		'	'	'
Total Stockholders' Equity	'	-20,913		'	'	'
Total Liabilities, Convertible Preferred Stock and Stockholders' Equity	'	268,405		'	'	'
Cash flows from operating activities:	'	'		'	'	'
Net Income (Loss)	'	'		'	'	-24,815
Change in fair value of borrower loans	'	'		'	'	15,614
Change in fair value of notes	'	'		'	'	-16,195
Restricted cash except for those related to investing activities	'	'		'	'	-2,000
Loans held for sale at fair value	'	'		'	'	35
Net cash used in operating activities	'	'		'	'	-17,297
Cash flows from investing activities:	'	'		'	'	'
Origination of Borrower Loans Held at Fair Value	'	'		'	'	-199,135
Repayment of Borrower Loans Held at Fair Value	'	'		'	'	65,504
Maturities of short term investments	'	'		'	'	80,786
Repayments of loans held for investment at fair value and credit losses	'	'		'	'	0
Origination of loans held for investment at fair value	'	'		'	'	0
Increase (Decrease) in Restricted Cash and Investments	'	'		'	'	-334
Net cash used in investing activities	'	'		'	'	-54,513
Cash flows from financing activities:	'	'		'	'	'
Proceeds from issuance of notes held at fair value	'	'		'	'	-118,349
Payment of notes held at fair value	'	'		'	'	-65,167
Net cash provided by financing activities	'	'		'	'	($98,810)
[1]	Please see note 14

Schedule_I_Prosper_Funding_LLC3

Schedule I, Prosper Funding LLC, Condensed Consolidated Balance Sheets (Unaudited) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013		Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'		'		'
Cash and cash equivalents	$53,267	$18,339	[1]	$29,300	[1]	$2,300	[1]
Restricted cash	16,951	15,473	[1]	'		'
Loans held for sale at fair value	16,350	3,917	[1]	'		'
Borrower loans receivable at fair value	253,068	226,094	[1]	'		'
Property and equipment, net	6,293	3,396	[1]	'		'
Total Assets	351,956	268,405	[1]	'		'
Liabilities, and Member's Equity	'	'		'		'
Notes at fair value	252,911	226,794	[1]	'		'
Repurchase and indemnification obligation	157	32	[1]	'		'
Total Liabilities	275,046	244,200	[1]	'		'
Member's Equity	'	'		'		'
Retained earnings	-118,764	-104,042	[1]	'		'
Total Stockholders' Equity	-34,533	-20,913	[1]	'		'
Total Liabilities, Convertible Preferred Stock and Stockholders' Equity	351,956	268,405	[1]	'		'
Prosper Funding LLC [Member]	'	'		'		'
Assets	'	'		'		'
Cash and cash equivalents	2,862	5,789	[2]	3,167		5
Restricted cash	8,721	12,299	[2]	'		'
Loans held for sale at fair value	16,350	3,917	[2]	'		'
Borrower loans receivable at fair value	253,068	226,094	[2]	'		'
Property and equipment, net	2,048	1,980	[2]	'		'
Related party receivable	73	0	[2]	'		'
Other assets	1,450	255	[2]	'		'
Total Assets	284,572	250,334	[2]	'		'
Liabilities, and Member's Equity	'	'		'		'
Accounts payable and accrued liabilities	4,684	4,026	[2]	'		'
Notes at fair value	252,911	226,794	[2]	'		'
Repurchase and indemnification obligation	157	32	[2]	'		'
Related party payable	0	205	[2]	'		'
Total Liabilities	257,752	231,057	[2]	'		'
Member's Equity	'	'		'		'
Member's Equity	15,877	16,082	[2]	'		'
Retained earnings	10,943	3,195	[2]	'		'
Total Stockholders' Equity	26,820	19,277	[2]	'		'
Total Liabilities, Convertible Preferred Stock and Stockholders' Equity	$284,572	$250,334	[2]	'		'
[1]	Please see note 14
[2]	Derived from the company's audited consolidated financial statements.

Schedule_I_Prosper_Funding_LLC4

Schedule I, Prosper Funding LLC, Condensed Consolidated Statements of Operations (Unaudited) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Revenues	'	'	'	'
Servicing Income, net	$1,749	$83	$3,044	$70
Other revenues	1,147	378	2,090	810
Total Operating Revenues	25,129	4,499	51,983	9,368
Interest income on borrower loans	10,705	8,799	30,995	24,785
Net interest income	855	364	2,382	1,015
Change in FV on Borrower Loans, Loans Held for Sale and Notes, net	59	91	448	579
Total Net Revenues	26,043	4,954	54,813	10,962
Expenses	'	'	'	'
Cost of Services	1,408	450	3,275	1,609
Depreciation and Amortization	462	229	1,201	643	[1]
Professional Services	582	399	1,169	1,781
Other Operating Expenses	2,449	375	4,097	1,132
Total Expenses	23,319	9,917	54,631	35,777
Net Income (Loss)	2,724	-4,963	182	-24,815	[1]
Prosper Funding LLC [Member]	'	'	'	'
Operating Revenues	'	'	'	'
Administration Fee Revenue	8,574	2,042	19,525	4,178
Servicing Income, net	1,574	89	2,965	106
Other revenues	635	0	814	0
Total Operating Revenues	10,783	2,131	23,304	4,284
Interest income on borrower loans	10,724	8,892	31,014	22,391
Interest Expense on Notes	-9,850	-8,435	-28,613	-21,262
Net interest income	874	457	2,401	1,129
Change in FV on Borrower Loans, Loans Held for Sale and Notes, net	59	91	448	578
Total Net Revenues	11,716	2,679	26,153	5,991
Expenses	'	'	'	'
Cost of Services	958	292	2,297	1,004
Administration Fee Expense	6,836	1,520	15,018	2,534
Depreciation and Amortization	273	148	761	355
Professional Services	1	6	16	26
Other Operating Expenses	128	63	313	157
Total Expenses	8,196	2,029	18,405	4,076
Net Income (Loss)	$3,520	$650	$7,748	$1,915
[1]	Please see note 14

Schedule_I_Prosper_Funding_LLC5

Schedule I, Prosper Funding LLC, Condensed Consolidated Statements of Cash Flows (Unaudited) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013
Cash flows from operating activities:	'		'
Net Income	$182		($24,815)	[1]
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'		'
Change in Fair Value of Borrower Loans	14,916		15,614	[1]
Change in fair value of Loans held for sale	11		3	[1]
Change in fair value of Notes	-15,375		-16,195	[1]
Depreciation and amortization	1,201		643	[1]
Provision for Repurchase and Indemnification Obligation	125		20	[1]
Changes in Operating Assets and Liabilities	'		'
Receivable and other assets	-703		-122	[1]
Loans Held for Sale at Fair Value	-12,464		35	[1]
Accounts payable and accrued liabilities	4,281		-421	[1]
Cash flows from investing activities:	'		'
Origination of Borrower Loans Held at Fair Value	-823,841		-199,135	[1]
Repayment of Borrower Loans held at fair value	88,944		65,504	[1]
Proceeds from sale of borrower loans held at fair value	693,007		80,786	[1]
Purchases of Property and Equipment	-3,151		-2,334	[1]
Change in restricted cash	-1,478		-334	[1]
Cash flows from financing activities:	'		'
Proceeds from issuance of notes held at fair value	130,828		118,349	[1]
Payment of Notes Held at Fair Value	-89,336		-65,167	[1]
Net (decrease) increase in cash and cash equivalents	34,928		27,000	[1]
Cash and cash equivalents at beginning of the period	18,339	[1]	2,300	[1]
Cash and cash equivalents at end of the period	53,267		29,300	[1]
Cash paid for interest	28,976		23,725	[1]
Prosper Funding LLC [Member]	'		'
Cash flows from operating activities:	'		'
Net Income	7,748		1,915
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'		'
Change in Fair Value of Borrower Loans	14,916		-16,195
Change in fair value of Loans held for sale	11		3
Change in fair value of Notes	-15,375		15,614
Initial Gain and Amortization of Servicing Rights	-808		0
Depreciation and amortization	761		355
Provision for Repurchase and Indemnification Obligation	125		20
Changes in Operating Assets and Liabilities	'		'
Receivable and other assets	-21		0
Loans Held for Sale at Fair Value	-12,444		35
Accounts payable and accrued liabilities	87		533
Net Intercompany Payable/Receivable	-278		518
Net cash used in operating activities	-5,278		2,798
Cash flows from investing activities:	'		'
Origination of Borrower Loans Held at Fair Value	-823,841		-189,313
Repayment of Borrower Loans held at fair value	88,944		59,126
Proceeds from sale of borrower loans held at fair value	693,007		80,786
Purchases of Property and Equipment	-829		-1,227
Change in restricted cash	3,578		-969
Net cash used in investing activities	-39,141		-51,597
Cash flows from financing activities:	'		'
Proceeds from issuance of notes held at fair value	130,828		108,527
Payment of Notes Held at Fair Value	-89,336		-58,441
Net cash included in transfer of assets from PMI	0		1,875
Net cash provided by financing activities	41,492		51,961
Net (decrease) increase in cash and cash equivalents	-2,927		3,162
Cash and cash equivalents at beginning of the period	5,789	[2]	5
Cash and cash equivalents at end of the period	2,862		3,167
Cash paid for interest	28,976		23,725
Non-Cash Financing Activity, Distribution to Parent	($205)		$0
[1]	Please see note 14
[2]	Derived from the company's audited consolidated financial statements.

Schedule_I_Prosper_Funding_LLC6

Schedule I, Prosper Funding LLC, Notes to Financial Statements (Details) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
	State			Risk
				State
Organization and Business [Abstract]	'	'	'	'	'	'
Percentage of notes allowed for members to purchase (in hundredth)	'	'	'	100.00%	'	'
Number of states and district platform is open to investors	31	'	'	31	'	'
Additional number of states and district platform is open to borrowers	47	'	'	47	'	'
Certain Risks and Concentrations [Abstract]	'	'	'	'	'	'
Number of significant types of risks	'	'	'	2	'	'
Borrower Loans Sold Directly to Third Party Purchasers [Abstract]	'	'	'	'	'	'
Servicing fee (in hundredths)	'	'	'	1.00%	'	'
Prosper Funding LLC [Member]	'	'	'	'	'	'
Organization and Business [Abstract]	'	'	'	'	'	'
Percentage of notes allowed for members to purchase (in hundredth)	'	'	'	100.00%	'	'
Loan term, description	'	'	'three or five years	'	'	'
Number of states and district platform is open to investors	31	'	'	31	'	'
Additional number of states and district platform is open to borrowers	47	'	'	47	'	'
Certain Risks and Concentrations [Abstract]	'	'	'	'	'	'
Number of significant types of risks	'	'	'	2	'	'
Borrower Loans Sold Directly to Third Party Purchasers [Abstract]	'	'	'	'	'	'
Gain on sale of whole loans	$0.60	$0	'	$0.70	$0	'
Servicing assets	$0.70	'	'	$0.70	'	$0
Servicing fee (in hundredths)	1.00%	'	'	'	'	'

Schedule_I_Prosper_Funding_LLC7

Schedule I, Prosper Funding LLC, Borrower Loans and Notes Accounted for at Fair Value (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets [Abstract]	'	'
Borrower loans receivable	$253,068	$226,094	[1]
Loans held for sale	16,350	3,917	[1]
Liabilities [Abstract]	'	'
Notes	252,911	226,794	[1]
Recurring [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	253,068	226,094
Certificates of deposit & restricted cash	16,951	15,473
Loans held for sale	16,350	3,917
Total assets	286,369	245,484
Liabilities [Abstract]	'	'
Notes	252,911	226,794
Recurring [Member] | Level 1 Inputs [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	0	0
Certificates of deposit & restricted cash	15,577	14,032
Loans held for sale	0	0
Total assets	15,577	14,032
Liabilities [Abstract]	'	'
Notes	0	0
Recurring [Member] | Level 2 Inputs [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	0	0
Certificates of deposit & restricted cash	1,374	1,441
Loans held for sale	0	0
Total assets	1,374	1,441
Liabilities [Abstract]	'	'
Notes	0	0
Recurring [Member] | Level 3 Inputs [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	253,068	226,094
Certificates of deposit & restricted cash	0	0
Loans held for sale	16,350	3,917
Total assets	269,418	230,011
Liabilities [Abstract]	'	'
Notes	252,411	226,794
Prosper Funding LLC [Member] | Recurring [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	253,068	226,094
Certificates of deposit & restricted cash	8,721	12,299
Loans held for sale	16,350	3,917
Total assets	278,139	242,310
Liabilities [Abstract]	'	'
Notes	252,911	226,794
Prosper Funding LLC [Member] | Recurring [Member] | Level 1 Inputs [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	0	0
Certificates of deposit & restricted cash	7,448	11,028
Loans held for sale	0	0
Total assets	7,448	11,028
Liabilities [Abstract]	'	'
Notes	0	0
Prosper Funding LLC [Member] | Recurring [Member] | Level 2 Inputs [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	0	0
Certificates of deposit & restricted cash	1,273	1,271
Loans held for sale	0	0
Total assets	1,273	1,271
Liabilities [Abstract]	'	'
Notes	0	0
Prosper Funding LLC [Member] | Recurring [Member] | Level 3 Inputs [Member]	'	'
Assets [Abstract]	'	'
Borrower loans receivable	253,068	226,094
Certificates of deposit & restricted cash	0	0
Loans held for sale	16,350	3,917
Total assets	269,418	230,011
Liabilities [Abstract]	'	'
Notes	$252,911	$226,794
[1]	Please see note 14

Schedule_I_Prosper_Funding_LLC8

Schedule I, Prosper Funding LLC, Borrower Loans and Notes Held at Fair Value (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Borrower Loans [Member]

Borrower Loans [Member]

Notes [Member]

Notes [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Notes [Member]

Notes [Member]

Notes [Member]

Notes [Member]

Borrower Loans [Member]

Borrower Loans [Member]

Borrower Loans [Member]

Borrower Loans [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Notes [Member]

Borrower Loans [Member]

100 Basis Point Increase [Member]

100 Basis Point Increase [Member]

200 Basis Point Increase [Member]

200 Basis Point Increase [Member]

100 Basis Point Decrease [Member]

100 Basis Point Decrease [Member]

200 Basis Point Decrease [Member]

200 Basis Point Decrease [Member]

Notes [Member]

Borrower Loans [Member]

10% Higher [Member]

10% Higher [Member]

20% Higher [Member]

20% Higher [Member]

10% Lower [Member]

10% Lower [Member]

20% Lower [Member]

20% Lower [Member]

Loan

Borrower Loans [Member]

Borrower Loans [Member]

Notes [Member]

Notes [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Discount rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Default rate assumption [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Recurring [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

100 Basis Point Increase [Member]

100 Basis Point Increase [Member]

200 Basis Point Increase [Member]

200 Basis Point Increase [Member]

100 Basis Point Decrease [Member]

100 Basis Point Decrease [Member]

200 Basis Point Decrease [Member]

200 Basis Point Decrease [Member]

Notes [Member]

Borrower Loans [Member]

10% Higher [Member]

10% Higher [Member]

20% Higher [Member]

20% Higher [Member]

10% Lower [Member]

10% Lower [Member]

20% Lower [Member]

20% Lower [Member]

Notes [Member]

Notes [Member]

Notes [Member]

Notes [Member]

Borrower Loans [Member]

Borrower Loans [Member]

Borrower Loans [Member]

Borrower Loans [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Loans Held for Sale [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Notes [Member]

Borrower Loans [Member]

Borrower Loans and Notes Held at Fair Value [Abstract]

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

'

'

'

'

'

Aggregate principal balance outstanding

'

'

'

'

$256,026,000

$225,874,000

($258,947,000)

($229,271,000)

$16,360,000

$3,915,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

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'

'

'

'

'

'

'

$256,026,000

$225,953,000

($258,947,000)

($229,271,000)

$16,360,000

$3,915,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value adjustment

'

'

'

'

-2,958,000

141,000

6,036,000

2,477,000

-10,000

2,000

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

-2,958,000

141,000

6,036,000

2,477,000

-10,000

2,000

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

Fair value

'

'

'

'

253,068,000

226,094,000

-252,911,000

-226,794,000

16,350,000

3,917,000

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

253,068,000

226,094,000

-252,911,000

-226,794,000

16,350,000

3,917,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

Key economic assumptions and sensitivity of current fair value to immediate adverse changes in those assumptions [Abstract]

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'

'

Discount rate assumption (in hundredths)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.36%

[1]

9.36%

[1]

'

'

'

'

'

'

'

'

7.40%

[1]

7.40%

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.36%

[1]

9.36%

[1]

'

'

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'

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'

'

'

'

'

'

'

'

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'

'

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'

Default rate assumption (in hundredths)

'

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'

7.40%

[1]

7.40%

[1]

'

'

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'

'

'

'

'

'

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'

'

'

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'

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Borrower loans

'

'

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'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

247,738,000

'

244,715,000

'

253,975,000

'

257,188,000

'

'

'

247,275,000

'

244,418,000

'

253,729,000

'

256,584,000

'

'

'

'

'

'

'

'

'

'

247,738,000

'

244,715,000

'

253,975,000

'

257,188,000

'

'

'

247,275,000

'

244,418,000

'

253,729,000

'

256,584,000

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

Notes

'

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'

'

'

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'

'

'

'

'

'

'

'

244,736,000

'

241,743,000

'

250,912,000

'

254,085,000

'

'

'

244,275,000

'

241,452,000

'

250,663,000

'

253,493,000

'

'

'

'

'

'

'

'

'

'

244,736,000

'

241,743,000

'

250,912,000

'

254,085,000

'

'

'

244,275,000

'

241,452,000

'

250,663,000

'

253,493,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Changes in Level 3 assets measured at fair value on a recurring basis [Abstract]

'

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'

'

Beginning balance, Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

246,203,000

187,124,000

226,094,000

166,900,000

9,543,000

153,000

3,917,000

175,000

'

'

'

'

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'

'

246,203,000

187,124,000

226,094,000

0

9,543,000

153,000

3,917,000

0

Beginning balance, Liabilities

'

'

'

'

'

'

'

'

'

'

246,511,000

187,489,000

226,794,000

167,478,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-246,511,000

-187,489,000

-226,794,000

0

'

'

'

'

'

'

'

'

Beginning balance, Total

9,235,000

-212,000

3,217,000

-403,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,235,000

-212,000

3,217,000

0

'

'

'

'

'

'

'

'

'

'

'

'

Assets transferred

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

170,344,000

'

'

'

175,000

Transfers

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-170,574,000

'

'

'

'

'

'

'

'

Assets transferred, Total

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-55,000

'

'

'

'

'

'

'

'

'

'

'

'

Originations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

372,027,000

94,098,000

823,841,000

199,135,000

117,752,000

25,000

229,679,000

71,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

372,027,000

94,098,000

823,841,000

189,313,000

117,752,000

25,000

229,679,000

71,000

Originations, Liabilities

'

'

'

'

'

'

'

'

'

'

-44,115,000

-43,475,000

-130,828,000

-118,349,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-44,115,000

-43,475,000

-130,828,000

-108,527,000

'

'

'

'

'

'

'

'

Originations, Total

445,664,000

50,648,000

922,692,000

80,857,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

445,664,000

50,648,000

922,692,000

80,857,000

'

'

'

'

'

'

'

'

'

'

'

'

Principal repayments and credit losses, Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-31,226,000

-22,778,000

-88,944,000

-59,126,000

-586,000

-41,000

-899,000

-106,000

Principal repayments and credit losses, Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31,620,000

22,718,000

89,336,000

57,930,000

'

'

'

'

'

'

'

'

Principal repayments and credit losses, Total

-192,000

-101,000

-507,000

-443,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-192,000

-101,000

-507,000

-791,000

'

'

'

'

'

'

'

'

'

'

'

'

Borrower loans sold to third parties, Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-50,263,000

'

-80,786,000

'

0

'

0

-327,909,000

-50,263,000

-693,007,000

-80,786,000

-110,350,000

0

-216,336,000

0

Borrower loans sold to third parties, Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

0

'

'

'

'

'

'

'

'

'

Borrower loans sold to third parties, Total

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-438,259,000

'

-909,343,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in fair value on Borrower Loans and Notes, Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-6,027,000

-3,690,000

-14,916,000

-15,614,000

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-6,027,000

-3,690,000

-14,916,000

-15,614,000

0

0

0

0

Change in fair value on Borrower Loans and Notes, Liabilities

'

'

'

'

'

'

'

'

'

'

6,095,000

3,781,000

15,375,000

16,195,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,095,000

3,781,000

15,375,000

16,195,000

'

'

'

'

'

'

'

'

Change in fair value on Borrower Loans and Notes, Total

68,000

91,000

459,000

581,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

68,000

91,000

459,000

581,000

'

'

'

'

'

'

'

'

'

'

'

'

Change in fair value of loans held for sale, Asset

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

-9,000

'

-11,000

-3,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

0

0

-9,000

'

-11,000

-3,000

Change in fair value of loans held for sale, Liability

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

0

0

'

'

'

'

'

'

'

'

Change in fair value of loans held for sale, Total

-9,000

'

-11,000

-3,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-9,000

'

-11,000

-3,000

'

'

'

'

'

'

'

'

'

'

'

'

Ending balance, Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

253,068,000

204,131,000

253,068,000

204,131,000

16,350,000

137,000

16,350,000

137,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

253,068,000

204,131,000

253,068,000

204,131,000

16,350,000

137,000

16,350,000

137,000

Ending balance, Liabilities

'

'

'

'

'

'

'

'

'

'

-252,911,000

-204,465,000

-252,911,000

-204,465,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-252,911,000

-204,465,000

-252,911,000

-204,465,000

'

'

'

'

'

'

'

'

Ending balance, Total

16,507,000

-197,000

16,507,000

-197,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

16,507,000

-197,000

16,507,000

-197,000

'

'

'

'

'

'

'

'

'

'

'

'

Servicing fee as percentage of outstanding principal balance of borrower loan (in hundredths)

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of loans originated

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

282

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum number of days for which loans originated were delinquent

'

'

'90 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'90 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate principal amount of loans originated

1,500,000

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of loans originated

$140,000

'

$140,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$140,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Represents weighted average assumptions considering all credit grades.

Schedule_I_Prosper_Funding_LLC9

Schedule I, Prosper Funding LLC, Loan Servicing Note (Details) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Loan servicing assets [Member]	'	'
Servicing Asset at Amortized Cost, Balance [Roll Forward]	'	'
Amortized cost at beginning of period	$968	$260
Additions	1,044	1,873
Less Amortization	-157	-278
Amortized cost at end of period	1,855	1,855
Prosper Funding LLC [Member]	'	'
Servicing Asset at Amortized Cost, Balance [Roll Forward]	'	'
Amortized cost at beginning of period	770	241
Additions	772	1,408
Less Amortization	-126	-233
Amortized cost at end of period	$1,416	$1,416

Recovered_Sheet1

Schedule I, Prosper Funding LLC, Loan Servicing Liabilities (Details) (USD $)

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Loan servicing liabilities [Member]

Loan servicing liabilities [Member]

Loan servicing liabilities [Member]

Loan servicing liabilities [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Loan servicing liabilities [Member]

Loan servicing liabilities [Member]

Servicing Liability at Amortized Cost [Roll Forward]

'

'

'

'

'

'

'

'

'

'

Amortized cost at beginning of the period

'

'

'

'

$857

$339

'

'

$857

$339

Additions

'

'

414

1,064

'

'

'

'

414

1,064

Less Amortization

'

'

-140

-272

'

'

'

'

-140

-272

Amortized cost at end of the period

'

'

$1,131

$1,131

$857

$339

'

'

$1,131

$1,131

Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]

'

'

'

'

'

'

'

'

'

'

Default rate (in hundredths)

5.50%

[1]

5.60%

[1]

'

'

'

'

9.60%

[1]

9.90%

[1]

'

'

Discount rate (in hundredths)

9.60%

[1]

9.90%

[1]

'

'

'

'

5.50%

[1]

5.60%

[1]

'

'

Market servicing rate (in hundredths)

0.65%

0.65%

'

'

'

'

0.65%

0.65%

'

'

[1]

Represents weighted average or aggregate assumptions considering all credit grades.

Recovered_Sheet2

Schedule I, Prosper Funding LLC, Loans Held for Sale (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loans Held for Sale [Abstract]	'	'	'
Loans held for sale	$16,350,000	'	$3,917,000	[1]
Loans originated	229,700,000	70,000	'
Borrower loans sold to third party	216,300,000	0	'
Prosper Funding LLC [Member]	'	'	'
Loans Held for Sale [Abstract]	'	'	'
Loans held for sale	16,350,000	'	3,917,000	[2]
Loans originated	229,700,000	70,000	'
Borrower loans sold to third party	$216,300,000	$0	'
[1]	Please see note 14
[2]	Derived from the company's audited consolidated financial statements.

Recovered_Sheet3

Schedule I, Prosper Funding LLC, Repurchase and Indemnification Obligation (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Repurchase and Indemnification Obligation [Abstract]	'	'	'	'	'
Provision for repurchase and indemnification obligation	$30,000	$10,000	$140,000	$20,000	'
Balance of the Repurchase and indemnification obligation	157,000	'	157,000	'	32,000	[1]
Prosper Funding LLC [Member]	'	'	'	'	'
Repurchase and Indemnification Obligation [Abstract]	'	'	'	'	'
Provision for repurchase and indemnification obligation	30,000	10,000	140,000	20,000	'
Balance of the Repurchase and indemnification obligation	$157,000	'	$157,000	'	$32,000	[2]
[1]	Please see note 14
[2]	Derived from the company's audited consolidated financial statements.

Recovered_Sheet4

Schedule I, Prosper Funding LLC, Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income tax reconciliation [Abstract]	'	'	'	'
Income tax provision	$0	$0	$0	$0
Prosper Funding LLC [Member]	'	'	'	'
Income tax reconciliation [Abstract]	'	'	'	'
Income tax provision	$0	$0	'	'
Net effective tax rate (in hundredths)	0.00%	0.00%	'	'

Recovered_Sheet5

Schedule I, Prosper Funding LLC, Prior Period Adjustments (Details) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

6 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

As Previous Reported [Member]

As Previous Reported [Member]

As Previous Reported [Member]

As Previous Reported [Member]

Adjustments [Member]

Adjustments [Member]

Adjustments [Member]

Adjustments [Member]

Adjustments [Member]

As revised [Member]

As revised [Member]

As revised [Member]

As revised [Member]

As revised [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Prosper Funding LLC [Member]

Overstatement of gain recognized on sale of loans

'

$223

'

'

'

'

'

'

'

'

'

'

$223

'

'

'

'

'

'

Understatement of loan servicing assets and liabilities

'

223

'

'

'

'

'

'

'

'

'

'

217

'

'

'

'

'

'

Amount originally included in borrower loans receivable, fair value

'

144

'

'

'

'

'

'

'

'

'

'

144

'

'

'

'

'

'

Amount reclassified from adjusted gross servicing asset

'

260

'

'

'

'

'

'

'

'

'

'

241

'

'

'

'

'

'

Net Cash Provided by (Used in) Operating Activities, Continuing Operations

'

369

'

12,069

-17,297

[1]

'

'

'

'

'

'

'

-1,004

'

'

'

'

'

'

Net Cash Provided by (Used in) Investing Activities, Continuing Operations

'

12,080

'

-46,519

-54,513

[1]

'

'

'

'

'

'

'

12,715

'

'

'

'

'

'

Net Cash Provided by (Used in) Financing Activities, Continuing Operations

'

11,711

'

93,516

98,810

[1]

'

'

'

'

'

'

'

-11,711

'

'

'

'

'

'

Condensed Consolidated Balance Sheets (Unaudited) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrower loans receivable at fair value

253,068

226,094

[1]

'

253,068

'

'

226,238

'

226,238

'

-144

'

237,984

'

'

226,094

'

'

246,203

Other Assets

'

'

'

'

'

'

'

'

14

'

'

'

437

'

'

'

'

'

789

Total Assets

351,956

268,405

[1]

'

351,956

'

'

268,289

'

250,237

'

116

'

250,334

'

'

268,405

'

'

263,562

Accounts payable and accrued liabilities

'

'

'

'

'

'

'

'

3,712

'

'

'

314

'

'

'

'

'

4,026

Liabilities

275,046

244,200

[1]

'

275,046

'

'

244,172

'

230,743

'

28

'

314

'

'

244,200

'

'

231,057

Members' Equity

'

'

'

'

'

'

'

'

16,076

'

'

'

6

'

'

'

'

'

16,082

Retained Earnings (Accumulated Deficit)

-118,764

-104,042

[1]

'

-118,764

'

'

-104,080

'

3,195

'

38

'

4,815

'

'

-104,042

'

'

7,425

Total Stockholders' Equity

-34,533

-20,913

[1]

'

-34,533

'

'

24,117

'

19,277

'

-45,030

'

20,881

'

'

-20,913

'

'

23,467

Total Liabilities, Convertible Preferred Stock and Stockholders' Equity

'

'

'

'

'

'

268,289

'

250,334

'

14,146

'

263,742

'

'

268,405

'

'

274,865

Cash flows from operating activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Income (Loss)

2,724

'

-4,963

182

-24,815

[1]

-24,815

'

'

'

0

'

'

'

'

-24,815

'

'

'

'

Change in fair value of borrower loans

'

'

'

14,916

15,614

[1]

3,903

'

-4,484

'

11,711

'

'

'

-11,711

15,614

'

'

-16,195

'

Change in fair value of notes

'

'

'

15,375

16,195

[1]

-4,484

'

3,903

'

-11,711

'

'

'

11,711

-16,195

'

'

15,614

'

Restricted cash except for those related to investing activities

'

'

'

0

2,000

[1]

-2,334

'

-969

'

334

'

'

'

969

-2,000

'

'

0

'

Loans held for sale at fair value

'

'

'

12,464

-35

[1]

0

'

0

'

35

'

'

'

35

35

'

'

35

'

Accounts payable and accrued liabilities

'

'

'

4,281

-421

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net cash used in operating activities

'

'

'

'

'

-17,666

'

1,794

'

369

'

'

'

1,004

-17,297

'

'

2,798

'

Cash flows from investing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Origination of Borrower Loans Held at Fair Value

'

'

'

-823,841

-199,135

[1]

-118,349

'

'

-108,527

-80,786

'

-80,788

'

'

-199,135

'

-189,313

'

'

Proceeds from sale of borrowed loans held at fair value

'

'

'

'

'

'

'

0

'

'

'

'

'

80,786

'

'

'

80,786

'

Repayment of Borrower Loans Held at Fair Value

'

'

'

88,944

65,504

[1]

77,215

'

70,837

'

-11,711

'

'

'

-11,711

65,504

'

'

59,126

'

Repayments of loans held for investment at fair value and credit losses

'

'

'

'

'

106

'

106

'

-106

'

'

'

-106

0

'

'

0

'

Origination of loans held for investment at fair value

'

'

'

'

'

-71

'

'

-71

71

'

71

'

'

0

'

0

'

'

Increase (Decrease) in Restricted Cash and Investments

'

'

'

'

'

0

'

0

'

-334

'

'

'

-969

-334

'

'

-969

'

Net cash used in investing activities

'

'

'

'

'

-42,433

'

-38,882

'

-12,080

'

'

'

-12,715

-54,513

'

'

-519,597

'

Cash flows from financing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments of Notes Held at Fair Value

'

'

'

130,828

118,349

[1]

118,349

'

-70,152

'

0

'

'

'

11,711

-118,349

'

'

-58,441

'

Net cash provided by financing activities

'

'

'

'

'

$87,099

'

$40,250

'

$11,711

'

'

'

$11,711

($98,810)

'

'

$51,961

'

[1]

Please see note 14