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Employee Costs - Additional Information (Detail) - Employees
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Board of Directors [member]      
Disclosure of employee compensation costs [line items]      
Number of persons     7
Board of Directors [member] | Maximum [Member]      
Disclosure of employee compensation costs [line items]      
Number of persons 7 7  
Board of Directors [member] | Minimum [Member]      
Disclosure of employee compensation costs [line items]      
Number of persons 6 6  
Executive Board [member]      
Disclosure of employee compensation costs [line items]      
Number of persons 4   2
Executive Board [member] | Maximum [Member]      
Disclosure of employee compensation costs [line items]      
Number of persons   4  
Executive Board [member] | Minimum [Member]      
Disclosure of employee compensation costs [line items]      
Number of persons   2