v3.26.1
Income taxes - Schedule of tax losses carried forward expiration (Detail) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets $ 3,534,538 $ 2,687,855 $ 3,139,298
Unused tax losses [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 100,171,000    
Unused tax losses [member] | Tax Year 2045 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 11,185,000    
Unused tax losses [member] | Tax Year 2044 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 11,674,000    
Unused tax losses [member] | Tax Year 2043 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 8,985,000    
Unused tax losses [member] | Tax Year 2042 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 8,645,000    
Unused tax losses [member] | Tax Year 2041 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 4,268,000    
Unused tax losses [member] | Tax Year 2040 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 3,355,000    
Unused tax losses [member] | Tax Year 2039 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 4,681,000    
Unused tax losses [member] | Tax Year 2038 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 3,843,000    
Unused tax losses [member] | Tax Year 2037 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 4,804,000    
Unused tax losses [member] | Tax Year 2036 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 6,207,000    
Unused tax losses [member] | Tax Year 2035 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 8,182,000    
Unused tax losses [member] | Tax Year 2034 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 8,041,000    
Unused tax losses [member] | Tax Year 2033 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 4,762,000    
Unused tax losses [member] | Tax Year 2032 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 2,950,000    
Unused tax losses [member] | Tax Year 2031 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 3,127,000    
Unused tax losses [member] | Tax Year 2030 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets 2,891,000    
Unused tax losses [member] | Tax Year 2029 [Member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets $ 2,571,000