Organization and Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2017
Accounting Policies [Abstract]
Organization and Summary of Significant Accounting Policies	Organization and Summary of Significant Accounting Policies On Deck Capital, Inc.’s principal activity is providing financing to small businesses located throughout the United States as well as Canada and Australia, through term loans and lines of credit. We use technology and analytics to aggregate data about a small business and then quickly and efficiently analyze the creditworthiness of the business using our proprietary credit-scoring model. We originate most of the loans in our portfolio and also purchase loans from our issuing bank partner. We subsequently transfer most of loans into one of our wholly-owned subsidiaries or sell them through OnDeck Marketplace®. Basis of Presentation and Principles of Consolidation We prepare our condensed consolidated financial statements and footnotes in accordance with accounting principles generally accepted in the United States of America, or GAAP as contained in the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC. All intercompany transactions and accounts have been eliminated in consolidation. Certain reclassifications have been made to the prior year amounts to conform to the current year presentation. When used in these notes to condensed consolidated financial statements, the terms "we," "us," "our" or similar terms refers to On Deck Capital, Inc. and its consolidated subsidiaries. We consolidate the financial position and results of operations of these entities. The noncontrolling interest, which is presented as a separate component of our consolidated equity, represents the minority owners' proportionate share of the equity of the jointly owned entities. The noncontrolling interest is adjusted for the minority owners' share of the earnings, losses, investments and distributions. Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts in the condensed consolidated financial statements and accompanying notes. Significant estimates include allowance for loan losses, valuation of warrants, stock-based compensation expense, servicing assets/liabilities, loans purchased, capitalized software development costs, the useful lives of long-lived assets and valuation allowance for deferred tax assets. We base our estimates on historical experience, current events and other factors we believe to be reasonable under the circumstances. These estimates and assumptions are inherently subjective in nature; actual results may differ from these estimates and assumptions. Recently Adopted Accounting Standards In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 simplifies several aspects of accounting for share-based payment award transactions which include the income tax consequences, classification of awards as either equity or liabilities, classification on the statement of cash flows and forfeiture rate calculations. We adopted the new standard effective January 1, 2017. The adoption of this standard did not have a material impact on our consolidated financial statements and no prior period amounts were adjusted. Recent Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue Recognition, which creates ASC 606, Revenue from Contracts with Customers, and supersedes ASC 605, Revenue Recognition. ASU 2014-09 requires revenue to be recognized in an amount that reflects the consideration to which the entity expects to be entitled in exchange for goods or services and also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows from customer contracts. The new standard will be effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is permitted for annual reporting periods beginning after December 15, 2016. In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations, which makes amendments to the new revenue standard on assessing whether an entity is a principal or an agent in a revenue transaction and impacts whether an entity reports revenue on a gross or net basis. In April 2016, the FASB issued ASU 2016-10, Identifying Performance Obligations and Licensing, which makes amendments to the new revenue standard regarding the identification of performance obligations and accounting for the license of intellectual property. In May 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients, which makes amendments to the new revenue standard regarding assessing collectibility, presentation of sales taxes, noncash consideration and completed contracts and contract modifications at the time of transition to the new standard. Each amendment has the same effective date and transition requirements as the new revenue recognition standard. We completed our initial assessment of the impact of the new revenue standard noting that revenue generated in accordance with ASC 310, Receivables, and ASC 860, Transfers and Servicing, is explicitly excluded from the scope of ASC 606. Accordingly, we have concluded that our interest income, gains on loan sales and loan servicing income will not be affected by the adoption of ASC 606. Marketing fees from our issuing bank partner will be within the scope of ASC 606. However, we believe that ASC 606 will have little, if any, impact on the timing and amount of revenue recognition as compared to the current standard. We will adopt the requirements of the new standard effective January 1, 2018 and intend to apply the modified retrospective method of adoption with the cumulative effect of adoption, if material, recognized at the date of initial application. In February 2016, the FASB issued ASU 2016-02, Leases, which creates ASC 842, Leases, and supersedes ASC 840, Leases. ASU 2016-02 requires lessees to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The new standard will be effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period and is applied retrospectively. Early adoption is permitted. We are currently assessing the impact that the adoption of this standard will have on our consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments. ASU 2016-13 will change the impairment model and how entities measure credit losses for most financial assets. The standard requires entities to use the new expected credit loss impairment model which will replace the incurred loss model used today. The new standard will be effective for annual reporting periods beginning after December 15, 2019. Early adoption is permitted, but not prior to December 15, 2018. We are currently assessing the impact that the adoption of this standard will have on our consolidated financial statements.

Organization and Summary of Significant Accounting Policies

On Deck Capital, Inc.’s principal activity is providing financing to small businesses located throughout the United States as well as Canada and Australia, through term loans and lines of credit. We use technology and analytics to aggregate data about a small business and then quickly and efficiently analyze the creditworthiness of the business using our proprietary credit-scoring model. We originate most of the loans in our portfolio and also purchase loans from our issuing bank partner. We subsequently transfer most of loans into one of our wholly-owned subsidiaries or sell them through OnDeck Marketplace®.

Basis of Presentation and Principles of Consolidation

We prepare our condensed consolidated financial statements and footnotes in accordance with accounting principles generally accepted in the United States of America, or GAAP as contained in the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC. All intercompany transactions and accounts have been eliminated in consolidation. Certain reclassifications have been made to the prior year amounts to conform to the current year presentation. When used in these notes to condensed consolidated financial statements, the terms "we," "us," "our" or similar terms refers to On Deck Capital, Inc. and its consolidated subsidiaries.

We consolidate the financial position and results of operations of these entities. The noncontrolling interest, which is presented as a separate component of our consolidated equity, represents the minority owners' proportionate share of the equity of the jointly owned entities. The noncontrolling interest is adjusted for the minority owners' share of the earnings, losses, investments and distributions.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts in the condensed consolidated financial statements and accompanying notes. Significant estimates include allowance for loan losses, valuation of warrants, stock-based compensation expense, servicing assets/liabilities, loans purchased, capitalized software development costs, the useful lives of long-lived assets and valuation allowance for deferred tax assets. We base our estimates on historical experience, current events and other factors we believe to be reasonable under the circumstances. These estimates and assumptions are inherently subjective in nature; actual results may differ from these estimates and assumptions.

Recently Adopted Accounting Standards

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting. ASU 2016-09 simplifies several aspects of accounting for share-based payment award transactions which include the income tax consequences, classification of awards as either equity or liabilities, classification on the statement of cash flows and forfeiture rate calculations. We adopted the new standard effective January 1, 2017. The adoption of this standard did not have a material impact on our consolidated financial statements and no prior period amounts were adjusted.

Recent Accounting Pronouncements Not Yet Adopted

In May 2014, the FASB issued ASU 2014-09, Revenue Recognition, which creates ASC 606, Revenue from Contracts with Customers, and supersedes ASC 605, Revenue Recognition. ASU 2014-09 requires revenue to be recognized in an amount that reflects the consideration to which the entity expects to be entitled in exchange for goods or services and also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows from customer contracts. The new standard will be effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early adoption is permitted for annual reporting periods beginning after December 15, 2016. In March 2016, the FASB issued ASU 2016-08, Principal versus Agent Considerations, which makes amendments to the new revenue standard on assessing whether an entity is a principal or an agent in a revenue transaction and impacts whether an entity reports revenue on a gross or net basis. In April 2016, the FASB issued ASU 2016-10, Identifying Performance Obligations and Licensing, which makes amendments to the new revenue standard regarding the identification of performance obligations and accounting for the license of intellectual property. In May 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients, which makes amendments to the new revenue standard regarding assessing collectibility, presentation of sales taxes, noncash consideration and completed contracts and contract modifications at the time of transition to the new standard. Each amendment has the same effective date and transition requirements as the new revenue recognition standard. We completed our initial assessment of the impact of the new revenue standard noting that revenue generated in accordance with ASC 310, Receivables, and ASC 860, Transfers and Servicing, is explicitly excluded from the scope of ASC 606. Accordingly, we have concluded that our interest income, gains on loan sales and loan servicing income will not be affected by the adoption of ASC 606. Marketing fees from our issuing bank partner will be within the scope of ASC 606. However, we believe that ASC 606 will have little, if any, impact on the timing and amount of revenue recognition as compared to the current standard. We will adopt the requirements of the new standard effective January 1, 2018 and intend to apply the modified retrospective method of adoption with the cumulative effect of adoption, if material, recognized at the date of initial application.

In February 2016, the FASB issued ASU 2016-02, Leases, which creates ASC 842, Leases, and supersedes ASC 840, Leases. ASU 2016-02 requires lessees to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The new standard will be effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period and is applied retrospectively. Early adoption is permitted. We are currently assessing the impact that the adoption of this standard will have on our consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments. ASU 2016-13 will change the impairment model and how entities measure credit losses for most financial assets. The standard requires entities to use the new expected credit loss impairment model which will replace the incurred loss model used today. The new standard will be effective for annual reporting periods beginning after December 15, 2019. Early adoption is permitted, but not prior to December 15, 2018. We are currently assessing the impact that the adoption of this standard will have on our consolidated financial statements.