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Summary of Activities in Shares of Capital Stock (Details) - shares
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Common Class A [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Outstanding shares, beginning [1] 22,321,422 [2] 22,119,299
Exercise of stock options 66,273 32,082
Vesting of restricted stock units 3,547 865
Conversion of Class C to Class A 395 266
Outstanding shares, ending [1] 22,391,637 22,152,512
Common Class C [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Outstanding shares, beginning [1] 3,492,672 [2] 3,291,271
Exercise of stock options 95,337
Vesting of restricted stock units
Conversion of Class C to Class A (395) (266)
Outstanding shares, ending [1] 3,587,614 3,291,005
[1] Adjusted retroactively for the effect of annual stock dividends
[2] Issued and outstanding shares have been adjusted retroactively for the effect of annual stock dividends.