Summary Of Significant Accounting Policies (Policy)	12 Months Ended
Summary Of Significant Accounting Policies (Policy)	Dec. 31, 2017
Summary Of Significant Accounting Policies [Abstract]
Basis Of Presentation	Basis of Presentation The Company believes the cash on hand at December 31, 2017 plus the $10 million of proceeds from the March 2018 financing will be sufficient to meet its obligations as they become due in the ordinary course of business for at least 12 months following the date these financial statements are issued. The Company has sustained operating losses throughout its corporate history and expects that its 2018 expenses will exceed its 2018 gross margin. The Company expects to continue to incur operating losses and negative cash flows until revenues reach a level sufficient to support ongoing operations or expense reductions are in place. The Company’s liquidity needs will be largely determined by the success of clinical adoption within the installed base of Niobe systems as well as by new placements of capital systems. The Company also may consider raising cash through capital transactions, which could include either debt or equity financing.
Cash And Cash Equivalents	Cash and Cash Equivalents The Company considers all short-term investments purchased with original maturities of three months or less to be cash equivalents. The Company places its cash with high-credit-quality financial institutions and invests primarily in money market accounts. No cash was restricted at December 31, 2017 or 2016.
Accounts Receivable And Allowance For Uncollectible Accounts	Accounts Receivable and Allowance for Uncollectible Accounts Accounts receivable primarily include amounts due from hospitals and distributors for acquisition of magnetic systems, associated disposable device sales and service contracts. Credit is granted on a limited basis, with balances due generally within 30 days of billing. The provision for bad debts is based upon management’s assessment of historical and expected net collections considering business and economic conditions and other collection indicators.
Financial Instruments	Financial Instruments Financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable and debt. The carrying value of such amounts reported at the applicable balance sheet dates approximates fair value. The Company measures certain financial assets and liabilities at fair value on a recurring basis, including warrants. General accounting principles for fair value measurement established a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (“Level 1”) and the lowest priority to unobservable inputs (“Level 3”). See Note 12 for disclosure of fair value measurements.
Inventory	Inventory The Company values its inventory at the lower of cost, as determined using the first-in, first-out (FIFO) method, or market. The Company periodically reviews its physical inventory for obsolete items and provides a reserve upon identification of potential obsolete items.
Property And Equipment	Property and Equipment Property and equipment consist primarily of leasehold improvements, computer, office, research and demonstration equipment, and equipment held for lease and are stated at cost. Depreciation is calculated using the straight-line method over the estimated useful lives or life of the base lease term, ranging from three to ten years.
Long-Lived Assets	Long-Lived Assets If facts and circumstances suggest that a long-lived asset may be impaired, the carrying value is reviewed. If this review indicates that the carrying value of the asset will not be recovered, as determined based on projected undiscounted cash flows related to the asset over its remaining life, the carrying value of the asset is reduced to its estimated fair value, which in most cases is estimated based upon Level 2 or Level 3 inputs.
Intangible Assets	Intangible Assets Intangible assets consist of purchased technology and intellectual property rights valued at cost on the acquisition date and amortized over their estimated useful lives of 10-15 years. If facts and circumstances suggest that an intangible asset may be impaired, the carrying value is reviewed. If this review indicates that the carrying value of the asset will not be recovered, as determined based on projected undiscounted cash flows related to the asset over its remaining life, the carrying value of the asset is reduced to its estimated fair value, which in most cases is estimated based upon Level 2 or Level 3 inputs.
Use Of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and loss during the reporting period. Actual results could differ from those estimates.
Revenue And Costs Of Revenue	Revenue and Costs of Revenue The Company recognizes revenue based on the Multiple-Deliverable Revenue Arrangements guidance (“ASU 2009-13”). ASU 2009-13 permits management to estimate the selling price of undelivered components of a bundled sale for which it is unable to establish vendor-specific objective evidence (“VSOE”) or third-party evidence (“TPE”). This requires management to record revenue for certain elements of a transaction even though it might not have delivered other elements of the transaction, for which it was unable to meet the requirements for establishing VSOE or TPE. This guidance also prohibits the use of the residual method for allocating revenue to the various elements of a transaction and requires that the revenue be allocated proportionally based on the relative estimated selling prices. Under our revenue recognition policy, a portion of revenue for Niobe systems, Vdrive systems and Odyssey systems is recognized upon delivery, provided that title has passed, there are no uncertainties regarding acceptance, persuasive evidence of an arrangement exists, the sales price is fixed and determinable, and collection of the related receivable is reasonably assured. When installation is the responsibility of the customer, revenue from system sales is recognized upon shipment since these arrangements do not include an installation element or right of return privileges. The Company does not recognize revenue in situations in which inventory remains at a Stereotaxis warehouse or in situations in which title and risk of loss have not transferred to the customer. Amounts collected prior to satisfying the above revenue recognition criteria are reflected as deferred revenue. Revenue from services and license fees, whether sold individually or as a separate unit of accounting in a multiple-deliverable arrangement, is deferred and amortized over the service or license fee period, which is typically one year. Revenue from services is derived primarily from the sale of annual product maintenance plans. We recognize revenue from disposable device sales or accessories upon shipment and establish an appropriate reserve for returns. The return reserve, which is applicable only to disposable devices, is estimated based on historical experience which is periodically reviewed and updated as necessary. In the past, changes in estimate have had only a de minimis effect on revenue recognized in the period. We believe that the estimate is not likely to change significantly in the future. Costs of systems revenue include direct product costs, installation labor and other costs, estimated warranty costs, and initial training and product maintenance costs. These costs are recorded at the time of sale. Costs of disposable revenue include direct product costs and estimated warranty costs and are recorded at the time of sale. Cost of revenue from services and license fees are recorded when incurred.
Research And Development Costs	Research and Development Costs Internal research and development costs are expensed in the period incurred. Amounts receivable from strategic relationships under research reimbursement agreements are recorded as a contra-research and development expense in the period reimbursable costs are incurred. There were no material receivables at December 31, 2017 or 2016 under these types of agreements. Advance receipts or other unearned reimbursements are included in accrued liabilities on the accompanying balance sheet until earned.
Share-Based Compensation	Share-Based Compensation Stock options or stock appreciation rights issued to certain non-employees are recorded at their fair value as determined in accordance with general accounting principles for share-based payments and accounting for equity instruments that are issued to other than employees for acquiring, or in conjunction with selling, goods or services, and recognized over the service period. Deferred compensation for options granted to non-employees is remeasured on a quarterly basis through the vesting or forfeiture date. The Company utilized the Black-Scholes valuation model to determine the fair value of share-based payments at the date of previously issued grant using risk-free interest rate based on the Treasury yield on the date of the grant and expected volatility based on the Company’s historical volatility over the expected term of the option. The resulting compensation expense is recognized over the requisite service period, generally one to four years. Restricted shares and units granted to employees are valued at the fair market value at the date of grant. The Company amortizes the amount to expense over the service period on a straight-line basis for those shares with graded vesting. If the shares are subject to performance objectives, the resulting compensation expense is amortized over the anticipated vesting period and is subject to adjustment based on the actual achievement of objectives. Shares purchased by employees under the 2004 Employee Stock Purchase Plan were considered to be compensatory and were accounted for in accordance with general accounting principles for share-based payments. Shares purchased by employees under the 2009 Employee Stock Purchase Plan are considered to be non-compensatory.
Net Earnings (Loss) per Common Share	Net Earnings (Loss) per Common Share Basic earnings (loss) per common share is computed by dividing the net earnings (loss) for the period by the weighted average number of common shares outstanding during the period. In periods where there is net income, we apply the two-class method to calculate basic and diluted net income (loss) per share of common stock, as our Convertible Preferred Stock is a participating security. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that otherwise would have been available to common stockholders. In periods where there is a net loss, the two-class method of computing earnings per share does not apply as our Convertible Preferred Stock does not contractually participate in our losses. We compute diluted net income (loss) per common share using net income (loss) as the “control number” in determining whether potential common shares are dilutive, after giving consideration to all potentially dilutive common shares, including stock options, warrants, unvested restricted stock units outstanding during the period and potential issuance of stock upon the conversion of our Convertible Preferred Stock issued and outstanding during the period, except where the effect of such securities would be antidilutive. The Company did not include any portion of unearned restricted shares, outstanding options, stock appreciation rights, warrants or convertible preferred stock in the calculation of diluted loss per common share because all such securities are anti-dilutive for all periods presented. The application of the two-class method of computing earnings per share under general accounting principles for participating securities is not applicable during these periods because those securities do not contractually participate in its losses. As of December 31, 2017, the Company had 413,301 shares of common stock issuable upon the exercise of outstanding options and stock appreciation rights at a weighted average exercise price of $9.04 per share, 38,779,119 shares of common stock issuable upon the exercise of outstanding warrants at a weighted average exercise price of $0.82 per share, and 39,537,501 shares of our common stock issuable upon conversion of our Series A Convertible Preferred Stock. The Company had no unearned restricted shares outstanding for the period ended December 31, 2017.
Income Taxes	Income Taxes In accordance with general accounting principles for income taxes, a deferred income tax asset or liability is determined based on the difference between the financial statement and tax basis of assets and liabilities as measured by the enacted tax rates that will be in effect when these differences reverse. The Company provides a valuation allowance against net deferred income tax assets unless, based upon available evidence, it is more likely than not the deferred income tax assets will be realized.
Product Warranty Provisions	Product Warranty Provisions The Company’s standard policy is to warrant all systems against defects in material or workmanship for one year following installation. The Company’s estimate of costs to service the warranty obligations is based on historical experience and current product performance trends. A regular review of warranty obligations is performed to determine the adequacy of the reserve and adjustments are made to the estimated warranty liability (included in other accrued liabilities) as appropriate.
Patent Costs	Patent Costs Costs related to filing and pursuing patent applications are expensed as incurred, as recoverability of such expenditures is uncertain.
Concentrations Of Risk	Concentrations of Risk The majority of the Company’s cash, cash equivalents and investments are deposited with one major financial institution in the U.S. Deposits in this institution exceed the amount of government provided insurance on such deposits. Revenue from Biosense Webster Inc. related to royalties and Odyssey system sales accounted for $3,304,126 and $4,099,075 or 11%, and 13%, of total net revenue for the years ended December 31, 2017, and 2016, respectively. No other single customer accounted for more than 10% of total revenue for the year ended December 31, 2017.
Reclassifications	Reclassifications Certain amounts in the prior period financial statements have been reclassified to conform to the current period presentation. These reclassifications had no effect on reported losses.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU” or “Update”) No. 2016-09, “Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” This amendment is intended to simplify several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, forfeitures, and classification on the statement of cash flows. This update was effective for fiscal years beginning after December 15, 2016 (January 1, 2017 for the Company) and interim periods within those fiscal years, with earlier application permitted. The Company adopted this guidance in the first quarter of 2017. The adoption of ASU 2016-09 did not materially impact the Company’s consolidated financial position, results of operations, equity, or cash flows. In July 2015, the FASB issued ASU No. 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory” regarding the subsequent measurement of inventory as part of its Simplification Initiative. This standard was effective for public companies for fiscal years beginning after December 15, 2016 (January 1, 2017 for the Company), including interim periods within those fiscal years. This Update should be applied prospectively, and early application is permitted as of the beginning of an interim or annual reporting period. The Company adopted this accounting standard update in the first quarter of 2017. The adoption of ASU 2015-11 did not materially impact the company’s results of operations, financial conditions, cash flows, or financial statement presentation. In November 2015, the FASB issued Accounting Standards Update (“ASU” or “Update”) No. 2015-17, “Income Taxes (Topic 740): To simplify the presentation of deferred income taxes.” The amendments in this Update require that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. The amendments in this Update apply to all entities that present a classified statement of financial position. The current requirement that deferred tax liabilities and assets of a tax-paying component of an entity be offset and presented as a single amount is not affected by the amendments in this Update. This standard is effective for public companies for financial statements issued for annual periods beginning after December 15, 2016 (January 1, 2017 for the Company), and interim periods within those annual periods. We have adopted this accounting standard update and there was no impact to the results of operations or cash flows In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-02 - Leases (ASC 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight line basis over the term of the lease, respectively. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. ASC 842 supersedes the previous leases standard, ASC 840 Leases. The standard is effective for interim and annual periods beginning after December 31, 2018 (January 1, 2019 for the Company), with early adoption permitted. The Company is in the process of evaluating the impact of this accounting standard update. In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU” or “Update”) No. 2014-15, to communicate amendments to FASB Account Standards Codification Subtopic 205-40, “Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.” The ASU requires management to evaluate relevant conditions, events and certain management plans that are known or reasonably knowable as of the evaluation date when determining whether substantial doubt about an entity’s ability to continue as a going concern exists. Management will be required to make this evaluation for both annual and interim reporting periods. Management will have to make certain disclosures if it concludes that substantial doubt exists or when it plans to alleviate substantial doubt about the entity’s ability to continue as a going concern. The standard is effective for annual periods ending after December 15, 2016 and for interim reporting periods starting in the first quarter of 2017 (December 31, 2016 for the Company). We have adopted this accounting standard update and provided the relevant disclosures in Note 1. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers," which converges the FASB's and the International Accounting Standards Board's current standards on revenue recognition. The standard provides companies with a single model to use in accounting for revenue arising from contracts with customers and supersedes current revenue guidance. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. ASU 2014-09 requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. The standard is effective for annual and interim periods beginning after December 15, 2017 (January 1, 2018 for the Company). Early adoption is not permitted. The standard permits companies to either apply the adoption to all periods presented, or apply the requirements in the year of adoption through a cumulative adjustment. The Company will adopt ASU 2014-09 during the first quarter of 2018 using the modified retrospective method. We are substantially complete with our evaluation of the impact of adopting ASU 2014-09 on our consolidated financial statements, and we do not expect significant changes in the timing or method of revenue recognition for any of our material revenue streams. In connection with adopting ASU 2014-09, we expect to record a cumulative-effect reduction to accumulated deficit of $0.4 million on January 1, 2018. This adjustment primarily relates to the deferral of costs to obtain a contract that were previously expensed at the beginning of the contract period.