{"cik":727510,"taxonomy":"us-gaap","tag":"OperatingLeaseLiabilityNoncurrent","label":"Operating Lease, Liability, Noncurrent","description":"Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.","entityName":"Viskase Holdings, Inc.","units":{"USD":[{"end":"2025-12-31","val":18111000,"accn":"0001104659-26-054911","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-04","frame":"CY2025Q4I"},{"end":"2026-03-31","val":16973000,"accn":"0001104659-26-054911","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-04","frame":"CY2026Q1I"}]}}