Organization and Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2019
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 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 an issuing bank partner. We subsequently transfer most of our loan volume into one of our wholly-owned subsidiaries. In October 2018, we announced the launch of ODX, a wholly-owned subsidiary that will focus on helping banks digitize their small business lending process. ODX offers a combination of software, analytic insights, and professional services that allow banks to bring their small business lending process online. Basis of Presentation and Principles of Consolidation We prepare our 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. When used in these notes to consolidated financial statements, the terms "we," "us," "our" or similar terms refers to On Deck Capital, Inc. and its consolidated subsidiaries. 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 consolidated financial statements and accompanying notes. Significant estimates include allowance for loan losses, stock-based compensation expense, capitalized software development costs, interest rate cap, the useful lives of long-lived assets, our effective income tax rate 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 August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities, which improves the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance. The amendments in this update better align an entity's risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and presentation of hedge results. The effective date for the standard is for fiscal years beginning after December 15, 2018. We elected to early adopt this ASU in fiscal 2018. See Note 9 for a discussion of our derivatives. 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. The new standard is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period. In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842): Targeted Improvements. We elected the prospective transition option provided by the ASU that would not require earlier periods to be restated upon adoption. We elected the package of practical expedients afforded under the standard which permit an entity not to: (i) reassess whether existing or expired contracts are or contain a lease, (ii) reassess the lease classification, and (iii) reassess any initial direct costs for any existing leases. Our operating lease commitments, which were primarily real estate leases, were recognized as a $37.5 million lease liability which is included in Other Liabilities on the Consolidated Balance Sheet at March 31, 2019. We simultaneously recognized a $37.5 million right of use asset. Our right-of-use asset was partially offset by $10.1 million of existing deferred rent and lease incentives resulting in a net right-of-use asset of $27.6 million which is included in Other Assets on the Consolidate Balance Sheet at March 31, 2019. Our total operating lease cost for the three months ended March 31, 2019 was $1.5 million and allocated within operating expenses. The weighted average remaining lease term is 7.2 years and we utilized a weighted average discount rate of approximately 7% Recent Accounting Pronouncements Not Yet Adopted 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 guidance will be effective for annual reporting periods beginning after December 15, 2019. Early adoption is permitted, although we do not intend to do so. We are currently assessing the impact that the adoption of this guidance will have on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies disclosure requirements for fair value measurements under ASC 820, Fair Value Measurement. The new guidance will be effective for annual reporting periods beginning after December 15, 2019. We are currently evaluating the impact the new standard may have on our disclosures, but we do not expect it to have a material impact.

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 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 an issuing bank partner. We subsequently transfer most of our loan volume into one of our wholly-owned subsidiaries.

In October 2018, we announced the launch of ODX, a wholly-owned subsidiary that will focus on helping banks digitize their small business lending process. ODX offers a combination of software, analytic insights, and professional services that allow banks to bring their small business lending process online.

Basis of Presentation and Principles of Consolidation

We prepare our 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. When used in these notes to consolidated financial statements, the terms "we," "us," "our" or similar terms refers to On Deck Capital, Inc. and its consolidated subsidiaries.

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 consolidated financial statements and accompanying notes. Significant estimates include allowance for loan losses, stock-based compensation expense, capitalized software development costs, interest rate cap, the useful lives of long-lived assets, our effective income tax rate 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 August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities, which improves the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance. The amendments in this update better align an entity's risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and presentation of hedge results. The effective date for the standard is for fiscal years beginning after December 15, 2018. We elected to early adopt this ASU in fiscal 2018. See Note 9 for a discussion of our derivatives.

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. The new standard is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period. In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842): Targeted Improvements. We elected the prospective transition option provided by the ASU that would not require earlier periods to be restated upon adoption. We elected the package of practical expedients afforded under the standard which permit an entity not to: (i) reassess whether existing or expired contracts are or contain a lease, (ii) reassess the lease classification, and (iii) reassess any initial direct costs for any existing leases. Our operating lease commitments, which were primarily real estate leases, were recognized as a $37.5 million lease liability which is included in Other Liabilities on the Consolidated Balance Sheet at March 31, 2019. We simultaneously recognized a $37.5 million right of use asset. Our right-of-use asset was partially offset by $10.1 million of existing deferred rent and lease incentives resulting in a net right-of-use asset of $27.6 million which is included in Other Assets on the Consolidate Balance Sheet at March 31, 2019. Our total operating lease cost for the three months ended March 31, 2019 was $1.5 million and allocated within operating expenses. The weighted average remaining lease term is 7.2 years and we utilized a weighted average discount rate of approximately 7%

Recent Accounting Pronouncements Not Yet Adopted

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 guidance will be effective for annual reporting periods beginning after December 15, 2019. Early adoption is permitted, although we do not intend to do so. We are currently assessing the impact that the adoption of this guidance will have on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies disclosure requirements for fair value measurements under ASC 820, Fair Value Measurement. The new guidance will be effective for annual reporting periods beginning after December 15, 2019. We are currently evaluating the impact the new standard may have on our disclosures, but we do not expect it to have a material impact.