Cover - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Apr. 22, 2026 |
Jun. 30, 2025 |
|
| Document Information [Line Items] | |||
| Document Type | 10-K/A | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Interactive Data Current | Yes | ||
| ICFR Auditor Attestation Flag | false | ||
| Amendment Flag | true | ||
| Amendment Description | Wright Investors’ Service Holdings, Inc. (the “Company”) is filing this Amendment No. 1 on Form 10-K/A (this “Form 10-K/A”) pursuant to General Instruction G (3) to Form 10-K, which amends and supplements our Annual Report on Form 10-K for the fiscal year ended December 31, 2025, which was filed with the Securities and Exchange Commission (the “SEC”) on March 30, 2026 (the “2025 Form 10-K”). This Form 10-K/A provides the information required to be disclosed in Part III, Items 10 through 14 and updates the information contained in Part IV, Item 15. As a result of this amendment, the Company is filing as exhibits to this Form 10-K/A the certifications required under Section 302 of the Sarbanes-Oxley Act of 2002. Because no financial statements are contained within this Form 10-K/A, the Company is not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.Except for the amendments described above, this Form 10-K/A does not modify or update the disclosures in, or exhibits to, the 2025 Form 10-Kwhich is incorporated by reference herein. | ||
| Document Period End Date | Dec. 31, 2025 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Entity Address, Address Line One | 118 North Bedford Road | ||
| Entity Address, Address Line Two | Ste. 100 | ||
| Entity Address, City or Town | Mount Kisco | ||
| Entity Address, State or Province | NY | ||
| Entity Address, Postal Zip Code | 10549 | ||
| Entity Registrant Name | WRIGHT INVESTORS’ SERVICE HOLDINGS, INC. | ||
| Entity Central Index Key | 0001279715 | ||
| Entity File Number | 000-50587 | ||
| Entity Tax Identification Number | 13-4005439 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Shell Company | true | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | false | ||
| Entity Public Float | $ 4,000,000 | ||
| City Area Code | (914) | ||
| Local Phone Number | 242-5700 | ||
| No Trading Symbol Flag | true | ||
| Title of 12(g) Security | Common Stock, $0.01 Par Value | ||
| Entity Common Stock, Shares Outstanding | 20,620,711 |