Collaborative Arrangement	12 Months Ended
Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Collaborative Arrangement	3. Collaborative Arrangement On February 26, 2018, the Company entered into an agreement with Abbott whereby Abbott will have exclusive worldwide commercialization rights for Surmodics' SurVeil® drug-coated balloon to treat the superficial femoral artery, which is currently being evaluated in a U.S. pivotal clinical trial. Separately, Abbott also received options to negotiate agreements for Surmodics' below-the-knee and arteriovenous (AV) fistula DCB products, which are currently in pre-clinical development. Surmodics is responsible for conducting all necessary clinical trials and other activities required to achieve U.S. and European Union regulatory clearances for the SurVeil DCB, including completion of the ongoing TRANSCEND clinical trial. Abbott and Surmodics will participate on a joint development committee charged with providing guidance on the Company’s clinical and regulatory activities with regard to the SurVeil DCB. The Company has received a $25 million upfront fee and may receive up to $67 million of additional payments upon achievement of various clinical and regulatory milestones. Revenue from the upfront fee and clinical and regulatory milestone payments, if any are achieved, are recognized within royalties and license fees in the consolidated statements of operations as the clinical and regulatory activities are performed on a proportional performance basis based on actual costs incurred relative to the expected total cost of the underlying activities, most notably the completion of the TRANSCEND clinical trial. A significant component of the cost of this trial is the cost of our outsourced clinical trial clinical research organization (“CRO”) consultants, which are estimated based on executed statements of work, project budgets, and patient enrollment timing, among other things. A significant change to the Company’s estimate of the costs to complete the TRANSCEND clinical trial could have a material effect on the Company’s results of operations. The total expected cost of the trial is a significant management estimate and is reviewed and assessed each reporting period. For the year ended September 30, 2018, the Company recognized revenue totaling $4.4 million from the upfront fee from the Abbott arrangement. The remainder of the $25 million upfront fee is included in deferred revenue in current and long-term deferred revenue as of September 30, 2018, totaling $9.6 million and $11.1 million, respectively. Upon receipt of regulatory approval for the SurVeil DCB, Abbott will have the right to purchase commercial units from the Company and Surmodics will realize revenue from product sales to Abbott at an agreed-upon transfer price, as well as a share of net profits resulting from third-party product sales by Abbott.

Collaborative Arrangement

12 Months Ended

Sep. 30, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

3. Collaborative Arrangement

On February 26, 2018, the Company entered into an agreement with Abbott whereby Abbott will have exclusive worldwide commercialization rights for Surmodics' SurVeil® drug-coated balloon to treat the superficial femoral artery, which is currently being evaluated in a U.S. pivotal clinical trial. Separately, Abbott also received options to negotiate agreements for Surmodics' below-the-knee and arteriovenous (AV) fistula DCB products, which are currently in pre-clinical development. Surmodics is responsible for conducting all necessary clinical trials and other activities required to achieve U.S. and European Union regulatory clearances for the SurVeil DCB, including completion of the ongoing TRANSCEND clinical trial. Abbott and Surmodics will participate on a joint development committee charged with providing guidance on the Company’s clinical and regulatory activities with regard to the SurVeil DCB.

The Company has received a $25 million upfront fee and may receive up to $67 million of additional payments upon achievement of various clinical and regulatory milestones. Revenue from the upfront fee and clinical and regulatory milestone payments, if any are achieved, are recognized within royalties and license fees in the consolidated statements of operations as the clinical and regulatory activities are performed on a proportional performance basis based on actual costs incurred relative to the expected total cost of the underlying activities, most notably the completion of the TRANSCEND clinical trial. A significant component of the cost of this trial is the cost of our outsourced clinical trial clinical research organization (“CRO”) consultants, which are estimated based on executed statements of work, project budgets, and patient enrollment timing, among other things. A significant change to the Company’s estimate of the costs to complete the TRANSCEND clinical trial could have a material effect on the Company’s results of operations. The total expected cost of the trial is a significant management estimate and is reviewed and assessed each reporting period.

For the year ended September 30, 2018, the Company recognized revenue totaling $4.4 million from the upfront fee from the Abbott arrangement. The remainder of the $25 million upfront fee is included in deferred revenue in current and long-term deferred revenue as of September 30, 2018, totaling $9.6 million and $11.1 million, respectively. Upon receipt of regulatory approval for the SurVeil DCB, Abbott will have the right to purchase commercial units from the Company and Surmodics will realize revenue from product sales to Abbott at an agreed-upon transfer price, as well as a share of net profits resulting from third-party product sales by Abbott.