Commitments and Contingencies - Narrative (Details) $ in Millions	9 Months Ended
Sep. 30, 2026 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Minimum purchase commitments for project related supplies	$ 26.1
Gain Contingencies [Line Items]
Subsequent Event, Description	On April 6, 2026, Jan Durbin filed a class action complaint in the United States District Court for the Southern District of Ohio (Case No. 1:26-cv-00346-MB) against Medpace Holdings, Inc., August J. Troendle, Jesse J. Geiger, and Kevin M. Brady alleging violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 (“Exchange Act”) and Rule 10b-5 promulgated under Section 10(b). Plaintiff alleges that defendants made materially false and misleading statements related to the Company’s book-to-bill ratio to deceive the market in violation of the Exchange Act. Plaintiff seeks unspecified damages, interest, attorneys’ fees, expert fees and other costs. On October 12, 2026, the plaintiff filed a notice of voluntary dismissal, without prejudice, against the defendants.On June 22, 2026, Stephen Bushansky filed a complaint in the United States District Court for the Southern District of Ohio (Case No. 1:26-cv-617) purporting to bring a stockholder derivative action on behalf of the Company against the Company and certain of its current and past officers and directors, namely August J. Troendle, Jesse J. Geiger, Kevin M. Brady, Susan E. Burwig, Stephen P. Ewald, Brian T. Carley, Fred B. Davenport, Jr., Femida H. Gwadry-Sridhar, Robert O. Kraft, Cornelius P. “Neal” McCarthy III, and Dani Zander in connection with the Company’s statements related to its book-to-bill ratio. Plaintiff alleges that the director defendants violated Section 14(a) of the Exchange Act and Rule 14a-9 thereunder and are also liable under Section 21D of the Exchange Act which governs the application of any private right of action for contribution asserted pursuant to the federal securities laws. Plaintiff also alleges claims under state law, asserting that defendants breached fiduciary duties, aided and abetted breaches of fiduciary duties and were unjustly enriched. Plaintiff seeks unspecified damages, restitution, disgorgement of profits and other relief. On October 20, 2026, the plaintiff filed a notice of voluntary dismissal, without prejudice, against the defendants.On August 25, 2026, Stephen J. Mary filed a complaint in the United States District Court for the Southern District of Ohio (Case No. 1:26-cv-865) purporting to bring a stockholder derivative action on behalf of the Company against the Company and certain of its current and past officers and directors, namely August J. Troendle, Jesse J. Geiger, Kevin M. Brady, Susan E. Burwig, Stephen P. Ewald, Brian T. Carley, Fred B. Davenport, Jr., Femida H. Gwadry-Sridhar, Robert O. Kraft, Cornelius P. “Neal” McCarthy III, and Dani Zander in connection with the Company’s statements related to its book-to-bill ratio. Plaintiff alleges that the defendants breached their fiduciary duties by issuing and failing to correct materially false and/or misleading statements and omissions of material fact to the investing public. Plaintiff’s claims against defendants allege violations of Section 14(a) of the Exchange Act, breach of fiduciary duty, aiding and abetting breach of fiduciary duty, unjust enrichment, waste of corporate assets, and contribution. Plaintiff seeks unspecified damages, restitution, disgorgement of profits and other relief. On October 20, 2026, the plaintiff filed a notice of voluntary dismissal, without prejudice, against the defendants.

Commitments and Contingencies - Narrative (Details)
$ in Millions

9 Months Ended

Sep. 30, 2026

USD ($)

Commitments and Contingencies Disclosure [Abstract]

Minimum purchase commitments for project related supplies

$ 26.1

On April 6, 2026, Jan Durbin filed a class action complaint in the United States District Court for the Southern District of Ohio (Case No. 1:26-cv-00346-MB) against Medpace Holdings, Inc., August J. Troendle, Jesse J. Geiger, and Kevin M. Brady alleging violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 (“Exchange Act”) and Rule 10b-5 promulgated under Section 10(b). Plaintiff alleges that defendants made materially false and misleading statements related to the Company’s book-to-bill ratio to deceive the market in violation of the Exchange Act. Plaintiff seeks unspecified damages, interest, attorneys’ fees, expert fees and other costs. On October 12, 2026, the plaintiff filed a notice of voluntary dismissal, without prejudice, against the defendants.On June 22, 2026, Stephen Bushansky filed a complaint in the United States District Court for the Southern District of Ohio (Case No. 1:26-cv-617) purporting to bring a stockholder derivative action on behalf of the Company against the Company and certain of its current and past officers and directors, namely August J. Troendle, Jesse J. Geiger, Kevin M. Brady, Susan E. Burwig, Stephen P. Ewald, Brian T. Carley, Fred B. Davenport, Jr., Femida H. Gwadry-Sridhar, Robert O. Kraft, Cornelius P. “Neal” McCarthy III, and Dani Zander in connection with the Company’s statements related to its book-to-bill ratio. Plaintiff alleges that the director defendants violated Section 14(a) of the Exchange Act and Rule 14a-9 thereunder and are also liable under Section 21D of the Exchange Act which governs the application of any private right of action for contribution asserted pursuant to the federal securities laws. Plaintiff also alleges claims under state law, asserting that defendants breached fiduciary duties, aided and abetted breaches of fiduciary duties and were unjustly enriched. Plaintiff seeks unspecified damages, restitution, disgorgement of profits and other relief. On October 20, 2026, the plaintiff filed a notice of voluntary dismissal, without prejudice, against the defendants.On August 25, 2026, Stephen J. Mary filed a complaint in the United States District Court for the Southern District of Ohio (Case No. 1:26-cv-865) purporting to bring a stockholder derivative action on behalf of the Company against the Company and certain of its current and past officers and directors, namely August J. Troendle, Jesse J. Geiger, Kevin M. Brady, Susan E. Burwig, Stephen P. Ewald, Brian T. Carley, Fred B. Davenport, Jr., Femida H. Gwadry-Sridhar, Robert O. Kraft, Cornelius P. “Neal” McCarthy III, and Dani Zander in connection with the Company’s statements related to its book-to-bill ratio. Plaintiff alleges that the defendants breached their fiduciary duties by issuing and failing to correct materially false and/or misleading statements and omissions of material fact to the investing public. Plaintiff’s claims against defendants allege violations of Section 14(a) of the Exchange Act, breach of fiduciary duty, aiding and abetting breach of fiduciary duty, unjust enrichment, waste of corporate assets, and contribution. Plaintiff seeks unspecified damages, restitution, disgorgement of profits and other relief. On October 20, 2026, the plaintiff filed a notice of voluntary dismissal, without prejudice, against the defendants.