Description of Business and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2016
Business	Business MannKind is a biopharmaceutical company focused on the discovery, development and commercialization of therapeutic products for diseases such as diabetes. The Company’s only marketed product, Afrezza (insulin human) inhalation powder, is a rapid-acting inhaled insulin that was approved by the U.S. Food and Drug Administration (the “FDA”) on June 27, 2014 to improve glycemic control in adult patients with diabetes.
Basis of Presentation	Basis of Presentation The Company’s primary activities since incorporation have been establishing its facilities, recruiting personnel, conducting research and development, business development, business and financial planning, raising capital, and commercial manufacturing. In 2016, the Company commenced commercial sales and marketing activities related to Afrezza. It is costly to develop and conduct clinical studies for therapeutic products, as well as to establish and maintain commercial sales and marketing capabilities. As of September 30, 2016, the Company had an accumulated deficit of $2.8 billion and has reported negative cash flow from operations since inception, other than for the nine months ended September 30, 2014, the year ended December 31, 2014, and for the three months ended March 31, 2015, as a result of receipt of the upfront payment and milestone payments from Sanofi-Aventis U.S. LLC (“Sanofi”) related to a license and collaboration agreement previously in effect. In May 2016, pursuant to a previously filed Form S-3 Registration Statement, which was declared effective by the SEC on April 27, 2016, the Company sold in a registered public offering 48,543,692 shares of its common stock, together with warrants to purchase up to 48,543,692 shares of the Company’s common stock. Net proceeds from this offering were approximately $47.4 million after deducting placement agent fees and expenses and paying for offering expenses, excluding any future proceeds from the exercise of the warrants. (See Note 14 — Warrants). At September 30, 2016, the Company’s capital resources consisted of cash and cash equivalents of $35.5 million. The Company expects to continue to incur significant expenditures to support commercial manufacturing and sales and marketing of Afrezza and the development of its product candidates. The facility agreement (the “Facility Agreement”) with Deerfield Private Design Fund II, L.P. (“Deerfield Private Design Fund”) and Deerfield Private Design International II, L.P. (collectively, “Deerfield”) and the First Amendment to Facility Agreement and Registration Rights Agreement (the “First Amendment”) that resulted in the issuance of an additional tranche of notes (see Note 13 — Facility Agreement) requires the Company to maintain at least $25.0 million in cash and cash equivalents or available borrowings under the loan arrangement, dated as of October 2, 2007, between the Company and The Mann Group LLC (as amended, restated, or otherwise modified as of the date hereof, “The Mann Group Loan Arrangement”), as of the last day of each fiscal quarter. On August 11, 2014, the Company executed a license and collaboration agreement (the “Sanofi License Agreement”) with Sanofi-Aventis Deutschland GmbH (which subsequently assigned its rights and obligations under the agreement to Sanofi), pursuant to which Sanofi was responsible for global commercial, regulatory and development activities for Afrezza. The Sanofi License Agreement became effective on September 23, 2014. The Company manufactured Afrezza at its manufacturing facility in Danbury, Connecticut to supply Sanofi’s demand for the product pursuant to a supply agreement dated August 11, 2014 (the “Sanofi Supply Agreement”). Under the Sanofi License Agreement, worldwide profits and losses, which were determined based on the difference between the net sales of Afrezza and the costs and expenses incurred by the Company and Sanofi that were specifically attributable or related to the development, regulatory filings, manufacturing, or commercialization of Afrezza, were shared 65% by Sanofi and 35% by the Company until Sanofi ceased distributing Afrezza. In connection with the Sanofi License Agreement, an affiliate of Sanofi provided the Company with a secured loan facility (the “Sanofi Loan Facility”) of up to $175.0 million to fund the Company’s share of net losses under the Sanofi License Agreement. The Sanofi License Agreement and Sanofi Supply Agreement terminated, effective April 4, 2016, following which the Company assumed responsibility for the worldwide development and commercialization of Afrezza from Sanofi. Under the terms of the transition agreement, Sanofi continued to fulfill orders for Afrezza in the United States until the Company began distributing MannKind-branded Afrezza product to major wholesalers during the week of July 25, 2016. Additional funding sources that are, or in certain circumstances may be, available to the Company, include approximately $30.1 million principal amount of available borrowings under The Mann Group Loan Arrangement. A portion of these available borrowings may be used to capitalize accrued interest into principal, upon mutual agreement of the parties, as it becomes due and payable under The Mann Group Loan Arrangement (see Note 5 — Related-Party Arrangements). The Company cannot provide assurances that its plans will not change or that changed circumstances will not result in the depletion of its capital resources more rapidly than it currently anticipates. The Company is seeking and will need to raise additional capital, whether through a sale of equity or debt securities, a strategic business collaboration with a pharmaceutical company, the establishment of other funding facilities, licensing arrangements, asset sales or other means, in order to continue the development and commercialization of Afrezza and its product candidates and to support its other ongoing activities. However, the Company cannot provide assurances that such additional capital will be available on acceptable terms or at all.
Reclassifications	Reclassifications Certain amounts from previous periods in the condensed consolidated statement of cash flows have been reclassified to conform to the 2016 presentation. Specifically interest on note payable to our principal stockholder has been reclassified from other liabilities. Additionally, on the condensed consolidated statement of operations, product manufacturing has been renamed to cost of goods sold.
Revenue Recognition - Net Revenue - Collaboration	Revenue Recognition – Net Revenue – Collaboration On April 5, 2016 the Company assumed responsibility for the worldwide development and commercialization of Afrezza from Sanofi. Under terms of the transition agreement, Sanofi continued to fulfill orders for Afrezza in the United States until the Company began distributing MannKind-branded Afrezza product to major wholesalers during the week of July 25, 2016. As previously disclosed, profits and losses incurred by the Company and Sanofi that were specifically attributable or related to the development, regulatory filings, manufacturing, or commercialization of Afrezza, were shared 65% by Sanofi and 35% by the Company until Sanofi ceased selling Afrezza. The Company analyzed the agreements entered into with Sanofi at their inception to determine whether the consideration, paid or payable to the Company, or a portion thereof, could be recognized as revenue. Revenue arrangements with multiple elements are divided into separate units of accounting if certain criteria are met, including whether the delivered element has stand-alone value to the customer. When deliverables are separable, consideration received is allocated to the separate units of accounting based on the relative selling price of each deliverable and the appropriate revenue recognition principles are applied to each unit. The assessment of multiple element arrangements requires judgment in order to determine the appropriate units of accounting and the points in time that, or periods over which, revenue should be recognized. Under the terms of the Sanofi License Agreement, Sanofi Supply Agreement and the Sanofi Loan Facility, the Company determined that the arrangement contained significant deliverables including (i) licenses to develop and commercialize Afrezza and to use the Company’s trademarks, (ii) development activities, and (iii) manufacture and supply services for Afrezza. Due to the proprietary nature of the manufacturing services to be provided by the Company, the Company determined that all of the significant deliverables should be combined into a single unit of accounting. The Company believes that the manufacturing services are proprietary due to the fact that since the late 1990’s, the Company has developed proprietary knowledge and patented equipment and tools that are used in the manufacturing process of Afrezza. Due to the complexities of particle formulation and the specialized knowledge and equipment needed to handle the Afrezza powder, neither Sanofi nor, to the Company’s knowledge, any third-party contract manufacturing organization currently possesses the capability of manufacturing Afrezza. In order for revenue to be recognized, the seller’s price to the buyer must be fixed or determinable. Prior to the third quarter of 2016, because the Company did not have the ability to estimate the amount of costs that would potentially be incurred under the loss share provision related to the Sanofi License Agreement and the Sanofi Supply Agreement, the Company believed this requirement for revenue recognition had not been met. Therefore, the Company had recorded the $150.0 million up-front payment and the two milestone payments of $25.0 million each as deferred payments from collaboration. In addition, as of December 31, 2015 the Company had recorded $17.5 million in Afrezza product shipments to Sanofi as deferred sales from collaboration and recorded $13.5 million as deferred costs from collaboration. Deferred costs from collaboration represented the costs of product manufactured and shipped to Sanofi, as well as certain direct costs associated with a firm purchase commitment entered into in connection with the collaboration with Sanofi. During the three months ended September 30, 2016, the Company determined that the remaining costs under the Sanofi License Agreement and the Sanofi Supply Agreement were reasonably estimable. Accordingly, the fixed or determinable fee requirement for revenue recognition was met and there are no future obligations to Sanofi. Therefore, the Company recognized $161.8 million of net revenue – collaboration for the three and nine months ended September 30, 2016. The revenue recognized includes the upfront payment of $150.0 million and the two milestone payments of $25.0 million each, net of $64.8 million of net loss share with Sanofi, as well as $17.4 million in sales of Afrezza and $9.2 million from sales of raw insulin, both to Sanofi. These payments and sales were made pursuant to the contractual terms of the agreements with Sanofi.
Revenue Recognition - Net Revenue - Commercial Product Sales	Revenue Recognition – Net Revenue – Commercial Product Sales Revenue is recognized when the four basic criteria of revenue recognition are met: (1) persuasive evidence that an arrangement exists; (2) delivery has occurred or services have been rendered; (3) the fee is fixed or determinable; and (4) collectability is reasonably assured. When the accounting requirements for revenue recognition are not met, the Company defers the recognition of revenue by recording deferred revenue on the balance sheet until such time that all criteria are met. The Company sells Afrezza in the United States to Integrated Commercialization Solutions (“ICS”) Direct and wholesale pharmaceutical distributors and, through them, to retail pharmacies, which are collectively referred to as “customers”. These sales are subject to rights of return within a period beginning six months prior to, and ending 12 months following, product expiration. For the three and nine months ended September 30, 2016, net revenue – commercial product sales consisted of $0.6 million of net sales of Afrezza dispensed to patients. The net sales took place in the third quarter as a result of the Company’s re-launch in July 2016. With respect to sales to customers, the Company has entered into a Commercial Outsourcing Services Agreement with ICS, a third party logistics provider, under which ICS will distribute MannKind product to wholesalers on its behalf. To enable the Company to distribute product in all necessary jurisdictions, on July 1, 2016 the Company entered into a first amendment to its contract with ICS for an interim period. Under this amendment, ICS, through ICS Direct, will purchase product from the Company and title and risk of loss transfers to ICS Direct. However, because (1) the Company indemnifies and holds harmless ICS for all accounts receivable arising out of commercial product sales under the first amendment that are not collected from the customers according to payment terms, and (2) ICS Direct may return product to the Company under the right of return described below, the Company has concluded that it cannot recognize revenue upon transfer of product to ICS or further, to ICS Direct. The Company provides the right of return to ICS Direct and its wholesale distributors and, through them, to its retail pharmacy customers for unopened product for a limited time before and after its expiration date. Once the product has been prescribed and dispensed to the patient, any right of return ceases to exist. Given the Company’s limited sales history for Afrezza, the Company cannot reliably estimate expected returns of the product at the time of shipment into the distribution channel. Accordingly, the Company defers recognition of revenue on Afrezza product shipments until the right of return no longer exists, which occurs at the earlier of the time Afrezza is dispensed from pharmacies to patients or expiration of the right of return. The Company recognizes revenue based on Afrezza patient prescriptions dispensed as estimated by syndicated data provided by a third party. The Company also analyzes additional data points to ensure that such third-party data is reasonable including data related to inventory movements within the channel and ongoing prescription demand. On September 26, 2016, the Company provided notice to ICS of its election to terminate the interim period agreement effective December 15, 2016. We expect this termination election will not impact our recognition of revenue. After that date, ICS will no longer take title to inventory. However, the Commercial Outsourcing Services Agreement will continue to apply and ICS will continue to distribute MannKind product to wholesalers on its behalf. The Company recorded $2.0 million in deferred revenue on its condensed consolidated balance sheet, of which $1.6 million (net of estimated gross-to-net adjustments) represents product shipped to our third-party logistics provider and wholesale distributors, but not dispensed to patients as of September 30, 2016. Deferred revenue also includes $0.4 million that we have received for the sale of surplus raw materials to a third party, where delivery was made after September 30, 2016. In addition, the costs of Afrezza associated with the deferred revenue are recorded as deferred costs until such time the related deferred revenue is recognized.
Gross-to-net Adjustments	Gross-to-net Adjustments Estimated gross-to-net adjustments for Afrezza include wholesaler distribution fees, prompt pay discounts, estimated rebates and patient discount programs, and are based on estimated amounts owed or to be claimed on the related sales. These estimates take into consideration the terms of the Company’s agreements with its customers and the levels of inventory within the distribution and retail channels that may result in future rebates or discounts taken. In certain cases, such as patient support programs, the Company recognizes the cost of patient discounts as a reduction of revenue based on estimated utilization. If actual future results vary, the Company may need to adjust these estimates, which could have an effect on product revenue in the period of adjustment. The Company records product sales deductions in the statement of operations at the time product revenue is recognized.
Product Returns	Product Returns The Company does not provide a reserve for product refunds for sales of Afrezza due to its revenue recognition policy of deferring recognition of revenue on product shipments of Afrezza until the right of return no longer exists.
Wholesaler Distribution Fees	Wholesaler Distribution Fees The Company pays distribution fees to certain wholesale distributors based on contractually determined rates. The Company accrues the distribution fees on shipment to the respective wholesale distributors and recognizes the distribution fees as a reduction of revenue in the same period the related revenue is recognized.
Prompt Pay Discounts	Prompt Pay Discounts The Company offers cash discounts to its customers, generally 2% of the sales price, as an incentive for prompt payment. The Company accounts for cash discounts by reducing accounts receivable by the prompt pay discount amount and recognizes the discount as a reduction of revenue in the same period the related revenue is recognized. Rebates The Company participates in federal and state government-managed Medicare and Medicaid rebate programs and intends to pursue participation in certain other qualifying federal and state government programs whereby discounts and rebates are provided to participating federal and state government entities. Rebates provided through these other qualifying programs will be included in the Medicaid/Medicare rebate accrual and are considered Medicaid/Medicare rebates for the purposes of this discussion. The Company accounts for these rebates by establishing an accrual equal to the estimate of rebate claims attributable to a sale and determines its estimate of the rebates accrual based on historical payor data provided by a third-party vendor along with additional data including a forecasted participation rate for Medicare and Medicaid. From that data, as well as input received from the commercial team, an estimated participation rate for Medicare and Medicaid is determined and applied at the mandated rate for those sales. Any new information regarding changes in the programs’ regulations and guidelines or any changes in the Company’s government price reporting calculations that would impact the amount of the rebates will also be taken into account in determining or modifying the appropriate reserve. The time period between the date the product is sold into the channel and the date such rebates are paid ranges from approximately six to nine months. As such, continuous monitoring of these estimates will be performed on a periodic basis and if necessary, adjusted to reflect new facts and circumstances. Rebates are recognized as a reduction of revenue in the period the related revenue is recognized.
Patient Discount and Co-Pay Assistance Programs	Patient Discount and Co-Pay Assistance Programs The Company offers discount card programs to patients for Afrezza in which patients receive discounts on their prescriptions or a reduction in their co-pay amounts that are reimbursed by the Company. The Company estimates the total amount that will be redeemed based on levels of inventory in the distribution and retail channels and recognizes the discount as a reduction of revenue in the same period the related revenue is recognized.
Deferred costs	Deferred costs from collaboration Deferred costs from collaboration represents the costs of product manufactured and sold to Sanofi, as well as certain direct costs associated with a firm purchase commitment entered into in connection with the collaboration with Sanofi. During the third quarter of 2016, the costs related to the Sanofi product sales were recognized as product costs – collaboration in the condensed consolidated statement of operations. Deferred costs from commercial product sales Deferred costs from commercial product sales represents the cost of product (including labor, overhead and costs to ship to third party logistics) shipped to ICS and wholesale distributors, but not dispensed by pharmacies to patients.
Cost of Goods Sold	Cost of goods sold Cost of goods sold includes the costs related to Afrezza product dispensed by pharmacies to patients as well as under-absorbed labor and overhead, foreign currency exchange impact and inventory write-offs, which are recorded as expenses in the period in which they are incurred rather than as a portion of the inventory cost.
Recognized loss on purchase commitments	Recognized loss on purchase commitments The Company assesses whether losses on long term purchase commitments should be accrued. Losses that are expected to arise from firm, non-cancellable, commitments for the future purchases of inventory items are recognized unless recoverable. When making the assessment, the Company also considers whether it is able to renegotiate with its vendors. The recognized loss on purchase commitments is reduced as inventory items are purchased.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying amounts reported in the accompanying financial statements for cash, accounts receivable, accounts payable and accrued expenses and other current liabilities approximate their fair value due to their relatively short maturities. The fair value of the cash equivalents, note payable to our principal stockholder, senior convertible notes, the Facility Agreement, the Sanofi Loan Facility and warrant liability are discussed in Note 8 — Fair Value of Financial Instruments.
Stock-based compensation	Stock-based compensation Share-based payments to employees, including grants of stock options, restricted stock units, performance-based awards and the compensatory elements of employee stock purchase plans, are recognized in the condensed consolidated statements of operations based upon the fair value of the awards at the grant date. The Company uses the Black-Scholes option valuation model to estimate the grant date fair value of employee stock options and the compensatory elements of employee stock purchase plans. Restricted stock units are valued based on the market price on the grant date. The Company evaluates stock awards with performance conditions as to the probability that the performance conditions will be met and estimates the date at which the performance conditions will be met in order to properly recognize stock-based compensation expense over the requisite service period. At the point that it becomes probable that the performance conditions will be met, the Company will record a cumulative catchup of the expense from the grant date to the current date, and the Company will then amortize the remainder of the expense over the remaining service period.
Warrants	Warrants The Company accounts for its warrants as either equity or liabilities based upon the characteristics and provisions of each instrument and evaluation of sufficient authorized shares available to satisfy the obligations. Warrants classified as derivative liabilities are recorded on the Company’s condensed consolidated balance sheets at their fair value on the date of issuance and are revalued at each subsequent balance sheet date, with fair value changes recognized in the condensed consolidated statements of operations. The Company estimates the fair value of its derivative liabilities using a third party valuation analysis that utilizes a Monte Carlo pricing valuation model and assumptions that are based on the individual characteristics of the warrants or instruments on the valuation date, as well as expected volatility, expected life, yield, and risk-free interest rate. Warrants classified as equity are recorded within additional paid in capital at the issuance date and are not re-measured in subsequent periods, unless the underlying assumptions change to trigger liability accounting.
Recently Issued Accounting Standards	Recently Issued Accounting Standards From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) or other standard setting bodies that are adopted by the Company as of the specified effective date. In May 2014, the FASB issued ASU No. 2014-09 related to revenue recognition, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The standard requires a company to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration it expects to be entitled to receive in exchange for those goods or services. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delayed the effective date of the new standard from January 1, 2017 to January 1, 2018. The FASB also agreed to allow entities to choose to adopt the standard as of the original effective date. In March 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations, which clarifies the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which clarifies certain aspects of identifying performance obligations and licensing implementation guidance. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients related to disclosures of remaining performance obligations, as well as other amendments to guidance on collectability, non-cash consideration and the presentation of sales and other similar taxes collected from customers. The Company is assessing the potential impact of the new standards on its consolidated financial statements and has not yet selected a method of adoption. In August 2014, the FASB issued ASU No. 2014-15, which provides guidance on determining when and how reporting entities must disclose going-concern uncertainties in their financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date of issuance of the entity’s financial statements (or within one year after the date on which the financial statements are available to be issued, when applicable). Further, an entity must provide certain disclosures if there is “substantial doubt about the entity’s ability to continue as a going concern.” The ASU is effective for annual periods ending after December 15, 2016, and interim periods thereafter; early adoption is permitted. The adoption of this standard is not expected to materially impact the Company’s consolidated financial statements. In July 2015, the FASB issued ASU No. 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory. Topic 330, inventory, currently requires an entity to measure inventory at the lower of cost or market. Market could be replacement cost, net realizable value, or net realizable value less an approximately normal profit margin. The amendments indicate that after adoption an entity should measure inventory within the scope of the ASU at the lower of cost and net realizable value. The amendments are effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The amendments should be applied prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The adoption of ASU No. 2015-11 will have no impact on the Company’s consolidated financial statements because the Company currently measures inventory at the lower of cost and net realizable value. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments — Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The update is intended to improve the recognition and measurement of financial instruments. The ASU affects public and private companies, not-for-profit organizations, and employee benefit plans that hold financial assets or owe financial liabilities. The standard is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is evaluating the impact the adoption of ASU No. 2016-01 will have on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The new standard requires that all lessees recognize the assets and liabilities that arise from leases on the balance sheet and disclose qualitative and quantitative information about its leasing arrangements. The new standard will be effective for us on January 1, 2019. The Company is evaluating the impact the adoption of ASU No. 2016-02 will have on its consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The new standard involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. For public business entities, the amendments in this standard are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company is evaluating the impact the adoption of ASU No. 2016-09 will have on its consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. The new standard seeks to reduce diversity in practice related to the classification of certain transactions in the Statement of Cash Flows. For public business entities, the amendments in this standard are effective for annual periods beginning after December 15, 2017, and interim periods within those annual periods. The Company is evaluating the impact the adoption of ASU No. 2016-15 will have on its consolidated financial statements.