{
 "ok": true,
 "cik": "1849867",
 "ticker": "CLST",
 "name": "CATALYST BANCORP, INC.",
 "filings": [
  {
   "form": "8-K",
   "filed": "2026-09-15",
   "items": [
    "5.02 Departure or Election of Directors; Appointment of Officers",
    "9.01 Financial Statements and Exhibits"
   ],
   "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986726000020/0001849867-26-000020-index.htm"
  },
  {
   "form": "8-K",
   "filed": "2026-08-18",
   "items": [
    "5.02 Departure or Election of Directors; Appointment of Officers",
    "9.01 Financial Statements and Exhibits"
   ],
   "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986726000018/0001849867-26-000018-index.htm"
  },
  {
   "form": "10-Q",
   "filed": "2026-08-14",
   "items": [],
   "url": "https://www.sec.gov/Archives/edgar/data/1849867/000110465926096825/0001104659-26-096825-index.htm"
  },
  {
   "form": "8-K",
   "filed": "2026-07-30",
   "items": [
    "2.02 Results of Operations and Financial Condition",
    "9.01 Financial Statements and Exhibits"
   ],
   "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986726000016/0001849867-26-000016-index.htm"
  },
  {
   "form": "8-K",
   "filed": "2026-07-14",
   "items": [
    "2.01 Completion of Acquisition or Disposition of Assets",
    "8.01 Other Events",
    "9.01 Financial Statements and Exhibits"
   ],
   "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986726000014/0001849867-26-000014-index.htm"
  },
  {
   "form": "8-K",
   "filed": "2026-06-26",
   "items": [
    "8.01 Other Events",
    "9.01 Financial Statements and Exhibits"
   ],
   "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986726000011/0001849867-26-000011-index.htm"
  }
 ],
 "events12m": 12,
 "sources": {
  "facts": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001849867.json",
  "filings": "https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1849867"
 },
 "license": "Figures as filed with the SEC. Card text CC BY 4.0, POPS4.",
 "notAdvice": "Reporting, not investment advice. No price targets, no buy or sell views.",
 "edgar": "🫧 Edgar looked up CATALYST BANCORP, INC. ($CLST). Last filing: 8-K (5.02 Departure or Election of Directors; Appointment of Officers), 2026-09-15. 12 event filings (8-K) in the past twelve months. Auditor change (8-K Item 4.01) filed 2025-11-06.",
 "auditor": {
  "changes": [
   {
    "filed": "2025-11-06",
    "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986725000022/0001849867-25-000022-index.htm"
   },
   {
    "filed": "2025-04-02",
    "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986725000004/0001849867-25-000004-index.htm"
   },
   {
    "filed": "2024-11-26",
    "url": "https://www.sec.gov/Archives/edgar/data/1849867/000184986724000031/0001849867-24-000031-index.htm"
   }
  ],
  "nonReliance": [],
  "restatedSince": null
 },
 "edgarette": "🔖 The filings carry no annual revenue line Edgarette can read (common for banks and insurers, which report income differently). Nothing weighed, nothing guessed."
}