Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended
Basis of Presentation (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Basis Of Presentation [Line Items]
Payments for repurchase of common stock	$ 0	$ 371,900
Operating lease cost	$ 7,742	8,065
Basis of Presentation	Basis of Presentation Description of Business Medpace Holdings, Inc. (together with its subsidiaries, “Medpace” or the “Company”), a Delaware corporation, is a global provider of clinical research-based drug and medical device development services. The Company partners with pharmaceutical, biotechnology, and medical device companies in the development and execution of clinical trials. The Company’s drug development services focus on full service Phase I-IV clinical development services and include development plan design, project management, regulatory affairs, clinical monitoring, data management and analysis, pharmacovigilance new drug application submissions, post-marketing clinical support, laboratory services, clinical human pharmacology, imaging services, and electrocardiography reading support for clinical trials. The Company’s operations are principally based in North America, Europe, and Asia. Unaudited Interim Financial Information The interim condensed consolidated financial statements include the accounts of the Company, are prepared in conformity with U.S. generally accepted accounting principles (“GAAP”), and are unaudited. In the opinion of the Company’s management, all adjustments of a normal recurring nature necessary for a fair presentation have been reflected. Certain financial information that is normally included in annual financial statements prepared in accordance with GAAP, but that is not required for interim reporting purposes, has been omitted. The preparation of the interim condensed consolidated financial statements in conformity with GAAP 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 interim condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results and outcomes could differ from management’s estimates and assumptions. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the Company’s audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. Share Repurchases In 2022, the Company’s Board of Directors (the "Board") approved a share repurchase program which has been amended several times to increase the aggregate amount of the share repurchase authorization. The Company did not execute any share repurchases during the three months ended March 31, 2026. During the three months ended March 31, 2025, the Company repurchased 1,193,011 shares for $389.8 million. As of March 31, 2026, the Company has remaining authorization of $821.7 million under the repurchase program. Repurchases under the share repurchase program are executed in the open market or negotiated transactions under trading plans put in place pursuant to Rule 10b5-1. The Company constructively retired the repurchased shares associated with these approved share repurchases, except for a small portion which were retained as Treasury Shares on the condensed consolidated statements of shareholders' equity. Retired share repurchase amounts paid in excess of par value are reflected within Accumulated deficit/Retained earnings in the Company’s condensed consolidated balance sheets. Recently Issued Accounting Pronouncements In November 2024, the FASB issued ASU 2024-03, “Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses” to improve disclosures by providing more detailed information about the types of expenses in commonly presented expense captions. The guidance is effective for annual reporting periods beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the effect this standard will have on its consolidated financial statements and related disclosures. In September 2025, the FASB issued ASU 2025-06, “Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software” to modernize the accounting for software development costs and specify disclosure requirements. The guidance is effective for annual periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods, with early adoption permitted as of the beginning of an annual reporting period. The Company is currently evaluating the effect this standard will have on its consolidated financial statements and related disclosures. In December 2025, the FASB issued ASU 2025-10, "Government Grants (Topic 832): Accounting for Government Grants Received by Business Entities" which establishes authoritative US GAAP guidance for accounting for grants received for consistency in applying the accounting rules across business entities. The guidance is effective for annual reporting periods beginning after December 15, 2028, and interim reporting periods within those annual reporting periods, with early adoption permitted. The Company is currently evaluating the effect this standard will have on its consolidated financial statements and related disclosures.
Employee Loans \| Related Party
Basis Of Presentation [Line Items]
Prepaid expense and other assets	$ 400		$ 400
Leased Real Estate \| Related Party \| Chief Executive Officer And Immediate Family \| Office Space
Basis Of Presentation [Line Items]
Operating lease cost	1,400	1,400
Leased Real Estate \| Chief Executive Officer
Basis Of Presentation [Line Items]
Operating lease cost	$ 700	$ 700
Share Repurchase Program
Basis Of Presentation [Line Items]
Repurchases of common stock (in shares)	0	1,193,011
Payments for repurchase of common stock		$ 389,800
Share Repurchase Program \| Maximum
Basis Of Presentation [Line Items]
Remaining amount of repurchase program	$ 821,700