Description	12 Months Ended
Sep. 30, 2020
Accounting Policies [Abstract]
Description	1. Description Surmodics, Inc. and subsidiaries (“Surmodics,” the “Company,” “we,” “us,” “our” and other like terms) is a leading provider of surface modification technologies for intravascular medical devices and chemical components for in vitro diagnostic (“IVD”) immunoassay tests and microarrays. Surmodics is pursuing development and commercialization of highly differentiated medical devices that are designed to address unmet clinical needs and engineered to the most demanding requirements. This key growth strategy leverages the combination of the Company’s expertise in proprietary surface technologies, along with enhanced device design, development, and manufacturing capabilities. The Company mission remains to improve the detection and treatment of disease. Surmodics is headquartered in Eden Prairie, Minnesota. Basis of Presentation The consolidated financial statements include all accounts and wholly-owned subsidiaries and have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”). All intercompany transactions have been eliminated. The Company operates on a fiscal year ending on September 30. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Ultimate results could differ from those estimates. Certain reclassifications have been made to the prior year's consolidated financial statements to conform to the current year presentation. Risk and Uncertainties The COVID-19 pandemic is having, and will likely continue to have, an adverse effect on our business, results of operations, financial condition, and cash flows, and its future impacts remain highly uncertain and unpredictable. The Company has considered the disruptions caused by COVID-19, including lower than forecasted sales and customer demand and macroeconomic factors, that may impact its estimates. The Company has assessed the potential impact of the pandemic on certain accounting matters including, but not limited to, estimated sales-based royalties revenue; allowance for doubtful accounts; inventory reserves; and the valuation of goodwill, intangible assets, other long-lived assets and investments, as of September 30, 2020 and through the date of this Annual Report on Form 10-K. As of the date of issuance of these consolidated financial statements, the extent to which the COVID-19 pandemic may materially impact the Company's financial condition, liquidity or results of operations is uncertain. For further information, refer to “Risk Factors” in Part II, Item 1A of this Annual Report on Form 10-K.

Description

12 Months Ended

Sep. 30, 2020

1. Description

Surmodics, Inc. and subsidiaries (“Surmodics,” the “Company,” “we,” “us,” “our” and other like terms) is a leading provider of surface modification technologies for intravascular medical devices and chemical components for in vitro diagnostic (“IVD”) immunoassay tests and microarrays. Surmodics is pursuing development and commercialization of highly differentiated medical devices that are designed to address unmet clinical needs and engineered to the most demanding requirements. This key growth strategy leverages the combination of the Company’s expertise in proprietary surface technologies, along with enhanced device design, development, and manufacturing capabilities. The Company mission remains to improve the detection and treatment of disease. Surmodics is headquartered in Eden Prairie, Minnesota.

Basis of Presentation

The consolidated financial statements include all accounts and wholly-owned subsidiaries and have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”). All intercompany transactions have been eliminated. The Company operates on a fiscal year ending on September 30.

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Ultimate results could differ from those estimates.

Certain reclassifications have been made to the prior year's consolidated financial statements to conform to the current year presentation.

Risk and Uncertainties

The COVID-19 pandemic is having, and will likely continue to have, an adverse effect on our business, results of operations, financial condition, and cash flows, and its future impacts remain highly uncertain and unpredictable. The Company has considered the disruptions caused by COVID-19, including lower than forecasted sales and customer demand and macroeconomic factors, that may impact its estimates. The Company has assessed the potential impact of the pandemic on certain accounting matters including, but not limited to, estimated sales-based royalties revenue; allowance for doubtful accounts; inventory reserves; and the valuation of goodwill, intangible assets, other long-lived assets and investments, as of September 30, 2020 and through the date of this Annual Report on Form 10-K. As of the date of issuance of these consolidated financial statements, the extent to which the COVID-19 pandemic may materially impact the Company's financial condition, liquidity or results of operations is uncertain. For further information, refer to “Risk Factors” in Part II, Item 1A of this Annual Report on Form 10-K.