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Capital and Reserves - Common Stock and Additional Paid-In Capital (Details) - shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of share capital, reserves and other equity interest [Line Items]      
Number of shares authorized (in shares) 280,000,000    
Beginning balance (in shares) 36,324,556 36,231,146 39,677,940
Conversion of shares (in shares)     0
Repurchased common stock (in shares)     (3,558,093)
Restricted shares issued, directors (in shares) 63,000 57,000 63,000
Restricted shares vested (in shares) 152,305 36,410 48,299
Ending balance (in shares) 36,539,861 36,324,556 36,231,146
“Class A”      
Disclosure of share capital, reserves and other equity interest [Line Items]      
Number of shares authorized (in shares) 40,000,000    
Beginning balance (in shares) 6,342,189 6,342,189 6,342,189
Conversion of shares (in shares)     0
Repurchased common stock (in shares)     0
Restricted shares issued, directors (in shares) 0 0 0
Restricted shares vested (in shares) 0 0 0
Ending balance (in shares) 6,342,189 6,342,189 6,342,189
“Class B”      
Disclosure of share capital, reserves and other equity interest [Line Items]      
Number of shares authorized (in shares) 40,000,000    
Beginning balance (in shares) 2,089,075 2,089,075 2,178,365
Conversion of shares (in shares)     (89,290)
Repurchased common stock (in shares)     0
Restricted shares issued, directors (in shares) 0 0 0
Restricted shares vested (in shares) 0 0 0
Ending balance (in shares) 2,089,075 2,089,075 2,089,075
“Class E”      
Disclosure of share capital, reserves and other equity interest [Line Items]      
Number of shares authorized (in shares) 100,000,000    
Beginning balance (in shares) 27,893,292 27,799,882 31,157,386
Conversion of shares (in shares)     89,290
Repurchased common stock (in shares)     (3,558,093)
Restricted shares issued, directors (in shares) 63,000 57,000 63,000
Restricted shares vested (in shares) 152,305 36,410 48,299
Ending balance (in shares) 28,108,597 27,893,292 27,799,882
“Class F”      
Disclosure of share capital, reserves and other equity interest [Line Items]      
Number of shares authorized (in shares) 100,000,000    
Beginning balance (in shares) 0 0 0
Conversion of shares (in shares)     0
Repurchased common stock (in shares)     0
Restricted shares issued, directors (in shares) 0 0 0
Restricted shares vested (in shares) 0 0 0
Ending balance (in shares) 0 0 0