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Note 5 - Inventories (Details Textual) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Inventory, Raw Materials, Noncurrent | $ 2,300 | $ 0

X
- Definition Carrying amount as of the balance sheet date of noncurrent portion of inventories of raw materials. + References No definition available. + Details
Name: | urgn_InventoryRawMaterialsNoncurrent
Namespace Prefix: | urgn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant