Document and Entity Information - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2026 |
Mar. 25, 2026 |
Aug. 02, 2025 |
|
| Cover [Abstract] | |||
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Period End Date | Jan. 31, 2026 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Trading Symbol | JILL | ||
| Entity Registrant Name | J.Jill, Inc. | ||
| Entity Central Index Key | 0001687932 | ||
| Current Fiscal Year End Date | --01-31 | ||
| Entity Well Known Seasoned Issuer | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Filer Category | Accelerated Filer | ||
| Entity Small Business | true | ||
| Entity Shell Company | false | ||
| Entity Emerging Growth Company | false | ||
| ICFR Auditor Attestation Flag | true | ||
| Entity Public Float | $ 117,890,439 | ||
| Entity Common Stock, Shares Outstanding | 14,879,795 | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Interactive Data Current | Yes | ||
| Title of 12(b) Security | Common Stock, $0.01 par value | ||
| Security Exchange Name | NYSE | ||
| Entity File Number | 001-38026 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Tax Identification Number | 45-1459825 | ||
| Entity Address, Address Line One | 4 Batterymarch Park | ||
| Entity Address, City or Town | Quincy | ||
| Entity Address, State or Province | MA | ||
| Entity Address, Postal Zip Code | 02169 | ||
| City Area Code | (617) | ||
| Local Phone Number | 376-4300 | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Auditor Name | Grant Thornton LLP | ||
| Auditor Location | Southfield, Michigan | ||
| Auditor Firm ID | 248 | ||
| Documents Incorporated by Reference | Portions of Part II and Part III of this Form 10-K are incorporated by reference from the Registrant’s definitive proxy statement for its 2026 annual meeting of shareholders to be filed with the Securities and Exchange Commission no later than 120 days after the end of the Registrant’s fiscal year. |
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| Auditor Opinion [Text Block] | Opinion on the financial statements We have audited the accompanying consolidated balance sheets of J.Jill, Inc. (a Delaware corporation) and subsidiaries (the “Company”) as of January 31, 2026 and February 1, 2025, the related consolidated statements of operations and comprehensive income, shareholders’ equity (deficit), and cash flows for each of the three years in the period ended January 31, 2026, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of January 31, 2026 and February 1, 2025, and the results of its operations and its cash flows for each of the three years in the period ended January 31, 2026 in conformity with accounting principles generally accepted in the United States of America. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company’s internal control over financial reporting as of January 31, 2026, based on criteria established in the 2013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”), and our report dated March 31, 2026 expressed an unqualified opinion. |