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Property, Plant And Equipment - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Apr. 30, 2023
USD ($)
Apr. 30, 2022
USD ($)
Apr. 30, 2021
USD ($)
 [1]
Apr. 30, 2023
HKD ($)
Apr. 30, 2023
CAD ($)
May 01, 2021
USD ($)
 [1]
Disclosure of detailed information about property, plant and equipment [line items]            
Property, plant and equipment $ 238,600 $ 16 [1]       $ 20
Other comprehensive income, net of tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets 1,145 0 [1] $ 0      
Property Revaluation Reserve [Member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Other comprehensive income, net of tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets 559          
Hotel Properties [Member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Property, plant and equipment 238,594 $ 0        
Property, plant and equipment, pledged as security $ 171,977          
Hotel Properties [Member] | Discount rate, measurement input [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Significant unobservable input duration assets property plant and equipment 10 years          
Hotel Properties [Member] | Hong Kong and Canada [Member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Property, plant and equipment $ 238,594          
Transfer into or out of level 3 Property, plant and equipment 0          
Hotel Properties [Member] | Hong Kong and Canada [Member] | Property Revaluation Reserve [Member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Other comprehensive income, net of tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets $ 1,145          
Hotel Properties [Member] | Hong Kong [member] | Discount rate, measurement input [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Significant unobservable input, assets 5.1     5.1 5.1  
Percentage of reasonably possible increase in unobservable input, assets 50.00%     50.00% 50.00%  
Percentage of reasonably possible decrease in unobservable input, assets 50.00%     50.00% 50.00%  
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets $ 6,000          
Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, assets $ 8,000          
Hotel Properties [Member] | Hong Kong [member] | Bottom of range [member] | Discount rate, measurement input [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Hotel average daily tariff rate       $ 880    
Hotel Properties [Member] | Hong Kong [member] | Top of range [member] | Discount rate, measurement input [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Hotel average daily tariff rate       $ 1,810    
Hotel Properties [Member] | Canada [member] | Discount rate, measurement input [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Significant unobservable input, assets 6.65     6.65 6.65  
Percentage of reasonably possible increase in unobservable input, assets 50.00%     50.00% 50.00%  
Percentage of reasonably possible decrease in unobservable input, assets 50.00%     50.00% 50.00%  
Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, assets $ 3,000          
Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, assets $ 2,000          
Hotel Properties [Member] | Canada [member] | Bottom of range [member] | Discount rate, measurement input [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Hotel average daily tariff rate         $ 280  
Hotel Properties [Member] | Canada [member] | Top of range [member] | Discount rate, measurement input [member]            
Disclosure of detailed information about property, plant and equipment [line items]            
Hotel average daily tariff rate         $ 380  
[1] The comparative consolidated financial statements have been re-presented from Hong Kong dollar to US$ to reflect the Company’s change in presentation currency. See note 1.