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Share Capital - Schedule of Common Stock Issued and Outstanding (Details) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Common shares issued - beginning of period (in shares) 103,683,894 103,039,304 103,087,859 102,563,042
Common shares outstanding - beginning of period (in shares) 103,683,894 103,039,304 103,087,859 102,563,042
Share class conversions (in shares)   0   0
Vesting of awards (in shares)     735,013 580,935
Employee and director share purchases (in shares)   22,750   22,750
Director share awards granted (in shares) 20,112 25,805 44,892 25,805
Share repurchases (in shares)     (163,758) (104,673)
Common shares issued - end of period (in shares) 103,704,006 103,087,859 103,704,006 103,087,859
Common shares outstanding - end of period (in shares) 103,704,006 103,087,859 103,704,006 103,087,859
Common Class A        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Common shares issued - beginning of period (in shares) 30,520,078 30,520,078 30,520,078 30,320,078
Common shares outstanding - beginning of period (in shares) 30,520,078 30,520,078 30,520,078 30,320,078
Share class conversions (in shares)   0   200,000
Vesting of awards (in shares)     0 0
Employee and director share purchases (in shares)   0   0
Director share awards granted (in shares) 0 0 0 0
Share repurchases (in shares)     0 0
Common shares issued - end of period (in shares) 30,520,078 30,520,078 30,520,078 30,520,078
Common shares outstanding - end of period (in shares) 30,520,078 30,520,078 30,520,078 30,520,078
Common Class B        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Common shares issued - beginning of period (in shares) 42,638,190 40,497,039 42,042,155 37,935,266
Common shares outstanding - beginning of period (in shares) 42,638,190 40,497,039 42,042,155 37,935,266
Share class conversions (in shares)   1,496,561   3,582,072
Vesting of awards (in shares)     735,013 580,935
Employee and director share purchases (in shares)   22,750   22,750
Director share awards granted (in shares) 20,112 25,805 44,892 25,805
Share repurchases (in shares)     (163,758) (104,673)
Common shares issued - end of period (in shares) 42,658,302 42,042,155 42,658,302 42,042,155
Common shares outstanding - end of period (in shares) 42,658,302 42,042,155 42,658,302 42,042,155
Common Class C        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Common shares issued - beginning of period (in shares) 30,525,626 32,022,187 30,525,626 34,307,698
Common shares outstanding - beginning of period (in shares) 30,525,626 32,022,187 30,525,626 34,307,698
Share class conversions (in shares)   (1,496,561)   (3,782,072)
Vesting of awards (in shares)     0 0
Employee and director share purchases (in shares)   0   0
Director share awards granted (in shares) 0 0 0 0
Share repurchases (in shares)     0 0
Common shares issued - end of period (in shares) 30,525,626 30,525,626 30,525,626 30,525,626
Common shares outstanding - end of period (in shares) 30,525,626 30,525,626 30,525,626 30,525,626