v3.26.1
Financial instruments - fair values and risk management - Group's exposure to foreign currency risk (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Exposure to foreign currency risk    
Financial liabilities $ (26,225,000) $ (21,512,000)
Lease liabilities    
Exposure to foreign currency risk    
Financial liabilities (1,087,000) (1,300,000)
Trade and other payables    
Exposure to foreign currency risk    
Financial liabilities (25,138,000) (20,212,000)
Currency risk | Euro    
Exposure to foreign currency risk    
Financial assets 26,979,000 25,446,000
Financial liabilities (6,013,000) (5,200,000)
Net exposure 20,966,000 20,246,000
Currency risk | Russian Ruble    
Exposure to foreign currency risk    
Financial assets 101,000 74,000
Net exposure 101,000 74,000
Currency risk | Armenian Dram    
Exposure to foreign currency risk    
Financial assets 552,000 48,000
Financial liabilities (1,291,000) (1,448,000)
Net exposure (739,000) (1,400,000)
Currency risk | Kazakhstani Tenge    
Exposure to foreign currency risk    
Financial assets 1,061,000 536,000
Financial liabilities (74,000) (87,000)
Net exposure 987,000 449,000
Currency risk | United Arab Emirates dirham    
Exposure to foreign currency risk    
Financial assets   5,000
Financial liabilities   (12,000)
Net exposure   (7,000)
Currency risk | British pound sterling    
Exposure to foreign currency risk    
Financial liabilities (42,000) (26,000)
Net exposure (42,000) (26,000)
Currency risk | Japanese yen    
Exposure to foreign currency risk    
Financial liabilities (34,000) (178,000)
Net exposure (34,000) (178,000)
Currency risk | Lease liabilities | Euro    
Exposure to foreign currency risk    
Financial liabilities (831,000) (945,000)
Currency risk | Lease liabilities | Armenian Dram    
Exposure to foreign currency risk    
Financial liabilities (256,000) (355,000)
Currency risk | Trade and other payables | Euro    
Exposure to foreign currency risk    
Financial liabilities (5,182,000) (4,255,000)
Currency risk | Trade and other payables | Armenian Dram    
Exposure to foreign currency risk    
Financial liabilities (1,035,000) (1,093,000)
Currency risk | Trade and other payables | Kazakhstani Tenge    
Exposure to foreign currency risk    
Financial liabilities (74,000) (87,000)
Currency risk | Trade and other payables | United Arab Emirates dirham    
Exposure to foreign currency risk    
Financial liabilities   (12,000)
Currency risk | Trade and other payables | British pound sterling    
Exposure to foreign currency risk    
Financial liabilities (42,000) (26,000)
Currency risk | Trade and other payables | Japanese yen    
Exposure to foreign currency risk    
Financial liabilities (34,000) (178,000)
Loans receivable | Currency risk | Euro    
Exposure to foreign currency risk    
Financial assets 156,000 212,000
Loans receivable | Currency risk | Armenian Dram    
Exposure to foreign currency risk    
Financial assets 1,000 13,000
Trade and other receivables | Currency risk | Euro    
Exposure to foreign currency risk    
Financial assets 3,540,000 9,121,000
Trade and other receivables | Currency risk | Kazakhstani Tenge    
Exposure to foreign currency risk    
Financial assets 8,000 7,000
Cash | Currency risk | Euro    
Exposure to foreign currency risk    
Financial assets 23,283,000 16,113,000
Cash | Currency risk | Russian Ruble    
Exposure to foreign currency risk    
Financial assets 101,000 74,000
Cash | Currency risk | Armenian Dram    
Exposure to foreign currency risk    
Financial assets 551,000 35,000
Cash | Currency risk | Kazakhstani Tenge    
Exposure to foreign currency risk    
Financial assets $ 1,053,000 529,000
Cash | Currency risk | United Arab Emirates dirham    
Exposure to foreign currency risk    
Financial assets   $ 5,000