Business Overview	9 Months Ended
Oct. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business Overview	(1) Business Overview Description of Business Tintri, Inc. (Tintri or the Company) was incorporated in the state of Delaware in 2008 and is headquartered in Mountain View, California. The Company develops and markets an enterprise cloud platform combining cloud management software technology and a range of all-flash storage systems, for virtualized and cloud environments. Initial Public Offering In July 2017, the Company completed its initial public offering (IPO), in which it sold 8,572,000 shares of common stock. The shares were sold at an IPO price of $7.00 per share for net proceeds of $55.8 million, after deducting underwriting discounts and commissions of $4.2 million. Immediately prior to the closing of the Company’s IPO, all shares of the Company’s then-outstanding convertible preferred stock automatically converted into an aggregate 17,992,973 shares of common stock in accordance with the terms of each series of preferred stock. Following the completion of the IPO, the IPO underwriters exercised an over-allotment option to purchase an additional 1,000,000 shares of common stock from the Company in August 2017. The additional shares were sold at the IPO price of $7.00 per share for net proceeds of $6.5 million, after deducting underwriting discounts and commissions of $0.5 million. Unaudited Interim Condensed Consolidated Financial Information The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (the SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s prospectus (the Prospectus) filed pursuant to Rule 424(b) under the Securities Exchange Act of 1933, as amended, with the SEC on June 30, 2017. The condensed consolidated balance sheet as of January 31, 2017, included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by U.S. GAAP on an annual reporting basis. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year 2018 or any future period. Liquidity The Company has experienced negative cash flows from operations since its inception and expects negative cash flows from operations to continue for the foreseeable future. Net losses incurred during the past three fiscal years ended January 31, 2015, 2016 and 2017 amounted to $69.7 million, $101.0 million and $105.8 million, respectively, and $120.3 million for the nine months ended October 31, 2017. Unless and until the Company is able to generate sufficient revenue from sales of its products and services to generate positive cash flows from operations, it expects such losses to continue. The Company is also subject to certain financial covenants related to its debt facilities that, if breached, could result in the debt becoming immediately due and payable in the event the lenders choose to declare an event of default. The Company may not have sufficient liquidity to repay amounts outstanding under its debt facilities should they become immediately due and payable. Historically, the Company has funded a significant portion of its operations through the issuance of equity and debt. In fiscal 2016, the Company raised $124.6 million in gross proceeds (Note 7) related to the sale of convertible preferred stock. The Company has also entered into credit facilities, under which the Company had borrowed an aggregate of $69.0 million as of October 31, 2017, and a Note Purchase Agreement (Note 5). In July 2017, the Company completed its IPO, in which it raised $55.8 million, after deducting underwriting discounts and commission of $4.2 million. In August 2017, the Company sold an additional 1,000,000 shares of its common stock in connection with the IPO underwriters exercising an over-allotment option, pursuant to which the Company received net proceeds of $6.5 million, after deducting underwriting discounts and commissions. The Company expects that this additional financing from its IPO, its existing cash and cash equivalents and short-term investments, its Note Purchase Agreement, if exercised, and credit facilities, and its plan to continue to drive efficiencies in the Company’s sales organization and other business units, through efforts such as the September 2017 restructuring plan (see Note 12), will provide sufficient liquidity for the Company to meet its obligations and debt financial covenants through at least December 15, 2018. Until the Company can generate positive cash flows from operations, it expects to continue to finance its operations with additional debt or equity financing and/or work with its lenders to amend certain financial covenants. The Company’s ability to raise additional liquidity is subject to a number of uncertainties, including, but not limited to, the market demand for the Company’s common or preferred stock, the Company’s financial performance and outlook, the market demand for the Company’s products and services, negative economic developments, adverse market conditions, significant delays in launch of new products and lack of market acceptance of new products. If the Company is not able to raise additional capital or access its debt facilities in sufficient amounts to fund its operations, it would have a material adverse effect on the Company’s business, operating results and financial condition.

(1) Business Overview

Description of Business

Tintri, Inc. (Tintri or the Company) was incorporated in the state of Delaware in 2008 and is headquartered in Mountain View, California. The Company develops and markets an enterprise cloud platform combining cloud management software technology and a range of all-flash storage systems, for virtualized and cloud environments.

Initial Public Offering

In July 2017, the Company completed its initial public offering (IPO), in which it sold 8,572,000 shares of common stock. The shares were sold at an IPO price of $7.00 per share for net proceeds of $55.8 million, after deducting underwriting discounts and commissions of $4.2 million. Immediately prior to the closing of the Company’s IPO, all shares of the Company’s then-outstanding convertible preferred stock automatically converted into an aggregate 17,992,973 shares of common stock in accordance with the terms of each series of preferred stock.

Following the completion of the IPO, the IPO underwriters exercised an over-allotment option to purchase an additional 1,000,000 shares of common stock from the Company in August 2017. The additional shares were sold at the IPO price of $7.00 per share for net proceeds of $6.5 million, after deducting underwriting discounts and commissions of $0.5 million.

Unaudited Interim Condensed Consolidated Financial Information

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and applicable rules and regulations of the Securities and Exchange Commission (the SEC) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s prospectus (the Prospectus) filed pursuant to Rule 424(b) under the Securities Exchange Act of 1933, as amended, with the SEC on June 30, 2017.

The condensed consolidated balance sheet as of January 31, 2017, included herein was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by U.S. GAAP on an annual reporting basis.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full fiscal year 2018 or any future period.

Liquidity

The Company has experienced negative cash flows from operations since its inception and expects negative cash flows from operations to continue for the foreseeable future. Net losses incurred during the past three fiscal years ended January 31, 2015, 2016 and 2017 amounted to $69.7 million, $101.0 million and $105.8 million, respectively, and $120.3 million for the nine months ended October 31, 2017. Unless and until the Company is able to generate sufficient revenue from sales of its products and services to generate positive cash flows from operations, it expects such losses to continue. The Company is also subject to certain financial covenants related to its debt facilities that, if breached, could result in the debt becoming immediately due and payable in the event the lenders choose to declare an event of default. The Company may not have sufficient liquidity to repay amounts outstanding under its debt facilities should they become immediately due and payable.

Historically, the Company has funded a significant portion of its operations through the issuance of equity and debt. In fiscal 2016, the Company raised $124.6 million in gross proceeds (Note 7) related to the sale of convertible preferred stock. The Company has also entered into credit facilities, under which the Company had borrowed an aggregate of $69.0 million as of October 31, 2017, and a Note Purchase Agreement (Note 5). In July 2017, the Company completed its IPO, in which it raised $55.8 million, after deducting underwriting discounts and commission of $4.2 million. In August 2017, the Company sold an additional 1,000,000 shares of its common stock in connection with the IPO underwriters exercising an over-allotment option, pursuant to which the Company received net proceeds of $6.5 million, after deducting underwriting discounts and commissions. The Company expects that this additional financing from its IPO, its existing cash and cash equivalents and short-term investments, its Note Purchase Agreement, if exercised, and credit facilities, and its plan to continue to drive efficiencies in the Company’s sales organization and other business units, through efforts such as the September 2017 restructuring plan (see Note 12), will provide sufficient liquidity for the Company to meet its obligations and debt financial covenants through at least December 15, 2018.

Until the Company can generate positive cash flows from operations, it expects to continue to finance its operations with additional debt or equity financing and/or work with its lenders to amend certain financial covenants. The Company’s ability to raise additional liquidity is subject to a number of uncertainties, including, but not limited to, the market demand for the Company’s common or preferred stock, the Company’s financial performance and outlook, the market demand for the Company’s products and services, negative economic developments, adverse market conditions, significant delays in launch of new products and lack of market acceptance of new products. If the Company is not able to raise additional capital or access its debt facilities in sufficient amounts to fund its operations, it would have a material adverse effect on the Company’s business, operating results and financial condition.