Revenue - Schedule of Schedule of Revenue by Region Based on Location of Customer (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Revenue, Major Customer [Line Items]
Revenue from sale of therapies, net	$ 106,677	$ 93,881
Revenue from sale of therapies, net
Revenue, Major Customer [Line Items]
Revenue from sale of therapies, net	106,677	93,881
Revenue from sale of therapies, net \| United States
Revenue, Major Customer [Line Items]
Revenue from sale of therapies, net	67,438	56,607
Revenue from sale of therapies, net \| Europe
Revenue, Major Customer [Line Items]
Revenue from sale of therapies, net	34,413	32,804
Revenue from sale of therapies, net \| International
Revenue, Major Customer [Line Items]
Revenue from sale of therapies, net	$ 4,826	$ 4,470

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Immunocore Holdings plc 10-Q