Nature of Business	9 Months Ended
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Curis, Inc. is a biotechnology company seeking to develop and commercialize innovative drug candidates for the treatment of cancers. As used throughout these consolidated financial statements, the term “the Company” refers to the business of Curis, Inc. and its wholly owned subsidiaries, except where the context otherwise requires, and the term “Curis” refers to Curis, Inc. The Company conducts its research and development programs both internally and through strategic collaborations. The Company’s most advanced drug candidate is CUDC-907, which is being investigated in clinical studies in patients with diffuse large B-cell lymphoma and solid tumors. In January 2015, the Company entered into an exclusive collaboration agreement focused on immuno-oncology and selected precision oncology targets with Aurigene Discovery Technologies Limited, or Aurigene. In September 2016, the Company entered into an amendment to this agreement, pursuant to which Aurigene received 10,208,333 shares of the Company's common stock in lieu of receiving up to $24.5 million of milestone and other payments from Curis (see Note 4(b)). The collaboration comprises multiple programs, in which Curis has the option to exclusively license each program, including data, intellectual property and compounds associated with each respective program, once a development candidate is nominated within that program. In October 2015, the Company exercised options to license the first two programs under this collaboration. The first licensed program is focused on the development of orally-available small molecule antagonists of programmed death-1 (PD1) and V-domain Ig suppressor of T-cell activation (VISTA) pathways in the immuno-oncology field. The Company has named CA-170, a programmed death ligand-1 (PDL1)/VISTA antagonist, as the development candidate from this program. The second licensed program is focused on orally-available small molecule inhibitors of Interleukin-1 receptor-associated kinase 4 (IRAK4) enzyme in the precision oncology field and the Company has named CA-4948 as the development candidate from this program. In addition, in October 2015, the Company selected a third program for further development under the collaboration, the second preclinical program within the immuno-oncology field, which is focused on evaluating small molecule antagonists of PD1 and T-cell immunoglobulin and mucin domain containing protein-3 (TIM3) pathways, including small molecules that target PDL1 and TIM3. In October 2016, the Company exercised its option to license this third program, and designated CA-327 as the development candidate. The Company is also party to a collaboration with F. Hoffmann-La Roche Ltd, or Roche, and Genentech Inc., or Genentech, a member of the Roche Group, under which Roche and Genentech are commercializing Erivedge® (vismodegib), a first-in-class orally-administered small molecule Hedgehog signaling pathway inhibitor, in advanced basal cell carcinoma, or BCC. In addition to BCC, Roche and Genentech are separately conducting studies of Erivedge in other diseases, including in idiopathic pulmonary fibrosis and myelofibrosis. The Company’s proprietary small molecule compounds also include CUDC-427, an orally-available, small molecule antagonist of inhibitor of apoptosis, or IAP proteins, and CUDC-305, an orally-available, small molecule antagonist of Heat Shock Protein 90. The Company operates in a single reportable segment, which is the research and development of innovative cancer therapeutics. The Company expects that any products that are successfully developed and commercialized would be used in the health care industry and would be regulated in the United States by the United States Food and Drug Administration, or FDA, and in overseas markets by similar regulatory authorities. The Company is subject to risks common to companies in the biotechnology industry as well as risks that are specific to the Company’s business, including, but not limited to: the Company’s ability to advance and expand its research and development programs; the Company’s reliance on Aurigene to successfully discover and preclinically develop drug candidates under the parties’ collaboration agreement; the Company’s reliance on Genentech and Roche to successfully commercialize Erivedge in the approved indication of advanced BCC and to progress its clinical development in indications other than BCC; the Company’s ability to obtain adequate financing to fund its operations; the ability of the Company’s wholly owned subsidiary, Curis Royalty, LLC, or Curis Royalty, to satisfy the terms of its loan agreement with BioPharma Secured Debt Fund II Sub, S.à.r.l., a Luxembourg limited liability company managed by Pharmakon Advisors, or BioPharma-II; the Company’s ability to obtain and maintain necessary intellectual property protection; development by the Company’s competitors of new or better technological innovations; dependence on key personnel; the Company’s ability to comply with regulatory requirements; and the Company’s ability to execute on its overall business strategies. The Company’s future operating results will largely depend on the progress of drug candidates currently in its development pipeline and the magnitude of payments that it receives and makes under its current and potential future collaborations. The results of the Company’s operations may vary significantly from year to year and quarter to quarter and depend on a number of factors, including, but not limited to: the timing, outcome and cost of the Company’s preclinical studies and clinical trials for its drug candidates; Aurigene’s ability to successfully discover and develop preclinical programs under the Company’s collaboration with Aurigene, as well as the Company’s decision to exclusively license and further develop programs under this collaboration; Roche and Genentech’s ability to successfully commercialize Erivedge; positive results in Roche and Genentech’s ongoing clinical trials. The Company anticipates that its existing cash, cash equivalents and investments at September 30, 2016 should enable it to maintain current and planned operations into the second half of 2017. The Company’s ability to continue funding its planned operations beyond this period is dependent upon, among other things, its ability to control expenses and its ability to raise additional funds through equity or debt financings, the success of its collaboration with Genentech, including its receipt of additional contingent cash payments under this collaboration, new collaborations or other sources of financing. The Company may not be able to successfully raise additional funds or enter into or continue any corporate collaborations and the timing, amount and likelihood of such events is highly uncertain. If the Company is unable to obtain adequate financing, the Company may be required to reduce or delay spending on its research and/or development programs.

Nature of Business

Curis, Inc. is a biotechnology company seeking to develop and commercialize innovative drug candidates for the treatment of cancers. As used throughout these consolidated financial statements, the term “the Company” refers to the business of Curis, Inc. and its wholly owned subsidiaries, except where the context otherwise requires, and the term “Curis” refers to Curis, Inc.

The Company conducts its research and development programs both internally and through strategic collaborations. The Company’s most advanced drug candidate is CUDC-907, which is being investigated in clinical studies in patients with diffuse large B-cell lymphoma and solid tumors.

In January 2015, the Company entered into an exclusive collaboration agreement focused on immuno-oncology and selected precision oncology targets with Aurigene Discovery Technologies Limited, or Aurigene. In September 2016, the Company entered into an amendment to this agreement, pursuant to which Aurigene received 10,208,333 shares of the Company's common stock in lieu of receiving up to $24.5 million of milestone and other payments from Curis (see Note 4(b)).

The collaboration comprises multiple programs, in which Curis has the option to exclusively license each program, including data, intellectual property and compounds associated with each respective program, once a development candidate is nominated within that program. In October 2015, the Company exercised options to license the first two programs under this collaboration. The first licensed program is focused on the development of orally-available small molecule antagonists of programmed death-1 (PD1) and V-domain Ig suppressor of T-cell activation (VISTA) pathways in the immuno-oncology field. The Company has named CA-170, a programmed death ligand-1 (PDL1)/VISTA antagonist, as the development candidate from this program. The second licensed program is focused on orally-available small molecule inhibitors of Interleukin-1 receptor-associated kinase 4 (IRAK4) enzyme in the precision oncology field and the Company has named CA-4948 as the development candidate from this program. In addition, in October 2015, the Company selected a third program for further development under the collaboration, the second preclinical program within the immuno-oncology field, which is focused on evaluating small molecule antagonists of PD1 and T-cell immunoglobulin and mucin domain containing protein-3 (TIM3) pathways, including small molecules that target PDL1 and TIM3. In October 2016, the Company exercised its option to license this third program, and designated CA-327 as the development candidate.

The Company is also party to a collaboration with F. Hoffmann-La Roche Ltd, or Roche, and Genentech Inc., or Genentech, a member of the Roche Group, under which Roche and Genentech are commercializing Erivedge® (vismodegib), a first-in-class orally-administered small molecule Hedgehog signaling pathway inhibitor, in advanced basal cell carcinoma, or BCC. In addition to BCC, Roche and Genentech are separately conducting studies of Erivedge in other diseases, including in idiopathic pulmonary fibrosis and myelofibrosis.

The Company’s proprietary small molecule compounds also include CUDC-427, an orally-available, small molecule antagonist of inhibitor of apoptosis, or IAP proteins, and CUDC-305, an orally-available, small molecule antagonist of Heat Shock Protein 90.

The Company operates in a single reportable segment, which is the research and development of innovative cancer therapeutics. The Company expects that any products that are successfully developed and commercialized would be used in the health care industry and would be regulated in the United States by the United States Food and Drug Administration, or FDA, and in overseas markets by similar regulatory authorities.

The Company is subject to risks common to companies in the biotechnology industry as well as risks that are specific to the Company’s business, including, but not limited to: the Company’s ability to advance and expand its research and development programs; the Company’s reliance on Aurigene to successfully discover and preclinically develop drug candidates under the parties’ collaboration agreement; the Company’s reliance on Genentech and Roche to successfully commercialize Erivedge in the approved indication of advanced BCC and to progress its clinical development in indications other than BCC; the Company’s ability to obtain adequate financing to fund its operations; the ability of the Company’s wholly owned subsidiary, Curis Royalty, LLC, or Curis Royalty, to satisfy the terms of its loan agreement with BioPharma Secured Debt Fund II Sub, S.à.r.l., a Luxembourg limited liability company managed by Pharmakon Advisors, or BioPharma-II; the Company’s ability to obtain and maintain necessary intellectual property protection; development by the Company’s competitors of new or better technological innovations; dependence on key personnel; the Company’s ability to comply with regulatory requirements; and the Company’s ability to execute on its overall business strategies.

The Company’s future operating results will largely depend on the progress of drug candidates currently in its development pipeline and the magnitude of payments that it receives and makes under its current and potential future collaborations. The results of the Company’s operations may vary significantly from year to year and quarter to quarter and depend on a number of factors, including, but not limited to: the timing, outcome and cost of the Company’s preclinical studies and clinical trials for its drug candidates; Aurigene’s ability to successfully discover and develop preclinical programs under the Company’s collaboration with Aurigene, as well as the Company’s decision to exclusively license and further develop programs under this collaboration; Roche and Genentech’s ability to successfully commercialize Erivedge; positive results in Roche and Genentech’s ongoing clinical trials.

The Company anticipates that its existing cash, cash equivalents and investments at September 30, 2016 should enable it to maintain current and planned operations into the second half of 2017. The Company’s ability to continue funding its planned operations beyond this period is dependent upon, among other things, its ability to control expenses and its ability to raise additional funds through equity or debt financings, the success of its collaboration with Genentech, including its receipt of additional contingent cash payments under this collaboration, new collaborations or other sources of financing. The Company may not be able to successfully raise additional funds or enter into or continue any corporate collaborations and the timing, amount and likelihood of such events is highly uncertain. If the Company is unable to obtain adequate financing, the Company may be required to reduce or delay spending on its research and/or development programs.