Summary of Significant Accounting Policies | 2. Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation The unaudited interim Consolidated Financial Statements have been prepared on the same basis as the audited Consolidated Financial Statements, and in the opinion of management, reflect all adjustments, consisting of only normal recurring adjustments, necessary for the fair presentation of the Company’s financial position as of March 31, 2021 and December 31, 2020, results of operations for the three months ended March 31, 2021 and 2020, and cash flows for the three months ended March 31, 2021 and 2020. These unaudited Consolidated Financial Statements should be read in conjunction with the Company’s audited Consolidated Financial Statements and the notes thereto for the year ended December 31, 2020 included in the Company’s Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission (the “SEC”) on February 23, 2021 (the “Annual Report”). There have been no material changes in the Company's significant accounting policies from those that were disclosed in Note 2, Summary of Significant Accounting Policies, included in the Annual Report. The accompanying Consolidated Financial Statements include the accounts of Blue Apron Holdings, Inc. and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The Company prepares its Consolidated Financial Statements and related disclosures in conformity with accounting principles generally accepted in the United States (“GAAP”). Liquidity and Going Concern Evaluation As of March 31, 2021, the Company had cash and cash equivalents of $29.6 million and total outstanding debt of $31.6 million, net of unamortized debt issuance costs, of which $28.1 million is classified as long-term debt and $3.5 million is classified as the current portion of long-term debt. On October 16, 2020, the Company entered into a financing agreement which provides for a senior secured term loan in the aggregate principal amount of $35.0 million that matures in March 2023 (the “2020 Term Loan”). The proceeds of the 2020 Term Loan were used, together with cash on hand, to repay in full the outstanding indebtedness under the revolving credit facility and to pay fees and expenses in connection with the transactions contemplated by the 2020 Term Loan. The Company terminated the revolving credit facility effective as of the closing of the 2020 Term Loan. As of March 31, 2021, the 2020 Term Loan bore interest at a rate equal to LIBOR (subject to a 1.50% floor) plus 8.00% per annum. The principal amount of the 2020 Term Loan is repayable in equal quarterly installments of $875,000 through December 31, 2022, with the remaining unpaid principal amount of the 2020 Term Loan repayable on March 31, 2023. The 2020 Term Loan and the 2021 Term Loan (defined below)(together, the “Senior Secured Term Loan”) contain restrictive covenants, financial covenants, and affirmative and financial reporting covenants restricting the Company and the Company’s subsidiaries’ activities. As of March 31, 2021, the financial covenants in the 2020 Term Loan include a requirement to maintain a minimum aggregate liquidity balance of $20.0 million at all times and a minimum subscription count (defined in the Senior Secured Term Loan as the number of all active customers on the Company’s internal account list) of 300,000 on any determination date occurring between the effective date and December 31, 2021, and 320,000 on any determination date occurring thereafter. On March 18, 2021, the Company’s aggregate liquidity balance, as calculated under the terms of the 2020 Term Loan, fell below the required $20.0 million balance, giving rise to an event of default in respect of the 2020 Term Loan. The Company’s aggregate liquidity balance returned to an amount in excess of $20.0 million the following day, and the agent and the lenders waived the event of default on March 30, 2021. As of March 31, 2021, the Company was in compliance with all of the covenants under the 2020 Term Loan. On May 5, 2021 (the “Closing Date”), the Company amended the financing agreement relating to the 2020 Term Loan (the “Amendment”). Among other things, the Amendment: (i) provides a new $5.0 million term loan (the “2021 Term Loan”), which bears interest at a rate equal to LIBOR (subject to a 1.50% floor) plus 10.00% per annum and matures at the same time as the 2020 Term Loan, on March 31, 2023. The 2021 Term Loan is prepayable and does not require periodic principal payments; (ii) increases the interest rate margin on the 2020 Term Loan by 1.00% per annum, resulting in the 2020 Term Loan bearing interest, from and after the Closing Date, at a rate equal to LIBOR (subject to a 1.50% floor) plus 9.00% per annum; (iii) waives the requirement that the borrower prepay the 2020 Term Loan with 50% of the proceeds of equity issuances, provided that the waiver will expire upon the earlier of (i) such time as the cumulative net proceeds from equity issuances of the borrower otherwise requiring such prepayment exceed $30.0 million (calculated net of the prepayment of the 2021 Term Loan described below) or (ii) 60 days after the Closing Date; (iv) requires that the borrower prepay the 2021 Term Loan with 100% of the proceeds of equity issuances (in addition to the other mandatory prepayment provisions applicable to the 2020 Term Loan, which also apply to the 2021 Term Loan); (v) reduces the minimum liquidity covenant from $20.0 million at all times to $15.0 million at all times until the earlier of (i) May 15, 2022, and (ii) the date on which the 2021 Term Loan and all accrued and unpaid interest thereon is repaid in full (the “Covenant Reset Date”); and (vi) charges a $1.0 million closing fee, which (i) was capitalized on the Closing Date as additional indebtedness under the 2021 Term Loan, (ii) bears interest at the same rate as the 2021 Term Loan, and (iii) 50% of which will be forgiven if the 2021 Term Loan (inclusive of the other 50% of the closing fee) is repaid within 60 days after the Closing Date. The proceeds of the 2021 Term Loan will be held in an escrow account for the benefit of the agent and the proceeds of the 2021 Term Loan will qualify as qualified cash for purposes of the minimum liquidity covenant, such that, in combination, the funding of the 2021 Term Loan and the reduction in the minimum liquidity covenant will provide the Company with an aggregate of $10.0 million in additional flexibility in respect of the minimum liquidity covenant until the Covenant Reset Date. The agent shall not be permitted to remove funds from the escrow account except (i) upon maturity of the 2021 Term Loan, (ii) an event of default that has not been waived or cured, or (iii) upon repayment of the 2021 Term Loan. In the event that the lender withdraws funds from the escrow for any reason, those funds must be applied to repay the 2021 Term Loan or be paid to the Company. In connection with the Amendment, the Company agreed to grant warrants (the “Warrants”) to the Lenders. Under the terms of the Amendment, so long as the 2020 Term Loan or 2021 Term Loan remain outstanding, on the first day of each quarter beginning on or after July 1, 2021, the Company will issue a Warrant to the Lenders to purchase at an exercise price of $0.01 per share such number of shares of Class A common stock of the Company as equals 0.50% of the then outstanding fully-diluted shares of Common Stock of the Company. The number of shares issuable upon exercise of each Warrant is subject to increase each time the Company issues or sells any shares of Common Stock, Common Stock equivalents, options, or convertible securities for a consideration per share (including upon exercise, exchange, or conversion) of less than the fair market value per share of the Class A common stock as of the Closing Date. The Warrants will expire five years after the applicable issuance date and will be exercisable on a cash basis or, at the election of the holder, on a cashless basis. The Company has a history of net losses and negative operating cash flows. In addition, the Company has experienced significant negative trends in its net revenue. While year-over-year trends in net revenue, net losses and operating cash flows have improved during the three months ended March 31, 2021, that improvement is, in part, due to changes in consumer behaviors as a result of the COVID-19 pandemic, and by the continued execution of the Company’s growth strategy. These positive trends on the Company’s operating results may not continue at current levels, and could decline in future periods as COVID-19 restrictions begin to be lifted and as vaccines become more widely available throughout the United States or if the Company is unable to continue to sustain the revenue growth resulting from its growth strategy. The Company is continuing to pursue its growth strategy to drive customer and revenue growth through product innovation. The Company’s ability, including the timing and extent, to successfully execute its growth strategy is inherently uncertain and is dependent on continued sufficiency of cash resources, and its ability to implement the initiatives and deliver the results as forecasted, among other factors. Due to this uncertainty, if the Company is unable to sufficiently deliver results from its growth strategy, manage liquidity and/or to cost effectively attract new customers and retain existing customers, the Company may not be able to maintain compliance with the minimum liquidity and minimum subscription count covenants which may result in an event of default under the Company’s Senior Secured Term Loan. Given the Company’s liquidity position, upon an event of default, if the Company were unable to obtain a waiver or successfully renegotiate the terms of its Senior Secured Term Loan with its lenders, and the lenders enforced one or more of their rights upon default, the Company would be unable to meet its current obligations. If the Company is unable to sufficiently execute its growth strategy, it believes it has plans to effectively manage liquidity and customer acquisition and retention in order to maintain compliance with its debt covenants. This includes implementing operational process driven changes to more cost-effectively source the products the Company offers, potential significant expense reductions in areas identified by the Company in product, technology, general and administrative costs and capital expenditures to achieve savings and reinvest in the business. This further includes modifying and balancing its marketing investments, as needed, to maintain the minimum subscription covenant, while also maintaining sufficient cash to meet the minimum liquidity covenant. A significant portion of the Company’s costs are discretionary in nature and, if needed, the Company has the ability to reduce or delay spending in order to reduce expenses and improve liquidity. While reductions in spending, particularly in marketing and capital expenditures, may negatively impact net revenue, the Company plans to execute such reductions to the extent needed to comply with its debt covenants. The Company has previously demonstrated an ability to implement various cost reduction initiatives, including workforce reductions and other cost optimizing initiatives. As a result of these initiatives, the Company’s year-over-year product, technology, general and administrative expenses, as a percentage of net revenue, were reduced by approximately 540 basis points in the three months ended March 31, 2021. Based on the current facts and circumstances, the additional financial flexibility provided through the Amendment discussed above, the Company’s financial planning process, and its historical ability to implement cost reductions and adjust marketing strategies, the Company believes it is probable it can effectively manage liquidity and subscription count in order to maintain compliance with the financial covenants under its Senior Secured Term Loan for at least the next 12 months. As a result, the Company has concluded that, after consideration of management’s plans, it has sufficient liquidity to meet its obligations within one year after the issuance date of the Consolidated Financial Statements, and it does not have substantial doubt about its ability to continue as a going concern. Use of Estimates In preparing its Consolidated Financial Statements in accordance with GAAP, the Company is required to make estimates and assumptions that affect the amounts of assets, liabilities, revenue, costs, and expenses, and disclosure of contingent assets and liabilities which are reported in the Consolidated Financial Statements and accompanying disclosures. The accounting estimates that require the most difficult and subjective judgments include revenue recognition, inventory valuation, leases, recoverability of long-lived assets, and the recognition and measurement of contingencies. The Company evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors and adjusts those estimates and assumptions when facts and circumstances dictate. Actual results could materially differ from the Company’s estimates and assumptions. Emerging Growth Company Status The Company is an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act (the “JOBS Act”), and may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies. The Company may take advantage of these exemptions until the Company is no longer an emerging growth company. Section 107 of the JOBS Act provides that an emerging growth company can take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or revised accounting standards. The Company has elected to use the extended transition period for complying with new or revised accounting standards, and as a result of this election, its financial statements may not be comparable to companies that comply with public company effective dates. The Company may take advantage of these exemptions up until December 31, 2022 (the last day of the fiscal year following the fifth anniversary of the initial public offering, or the “IPO”), or such earlier time that it is no longer an emerging growth company. The Company would cease to be an emerging growth company if it has more than $1.07 billion in annual revenue, has more than $700.0 million in market value of its stock held by non-affiliates, or it issues more than $1.0 billion of non-convertible debt securities over a three-year period. Smaller Reporting Company Status The Company is a “smaller reporting company,” as defined by Rule 12b-2 of the Securities Exchange Act of 1934, and therefore qualifies for reduced disclosure requirements for smaller reporting companies. Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued its standard on lease accounting, Accounting Standards Update No. 2016-02, Leases (Topic 842) Revenue Recognition (Topic 605), Revenue from Contracts with Customers (Topic 606), Leases (Topic 840), and Leases (Topic 842): Amendments to SEC Paragraphs Pursuant to the Staff Announcement at the July 20, 2017 EITF Meeting and Rescission of Prior SEC Staff Announcements and Observer Comments Codification Improvements to Topic 842, Leases, Leases (Topic 842): Targeted Improvements, Leases (Topic 842): Codification Improvements Financial Instruments – Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates Revenue from Contracts with Customers (Topic 606) and Leases (Topic 842): Effective Dates for Certain Entities, In August 2018, the FASB issued Accounting Standards Update No. 2018-15 (“ASU 2018-15”), Intangibles — Goodwill and Other — Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. In December 2019, the FASB issued Accounting Standards Update No. 2019-12 (“ASU 2019-12 ”), Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes Recently Adopted Accounting Pronouncements In March 2020, the FASB issued Accounting Standards Update No. 2020-04 (“ASU 2020-04”), Reference Rate Reform Facilitation of the Effects of Reference Rate Reform on Financial Reporting |