XML 134 R114.htm IDEA: XBRL DOCUMENT v3.25.1
Summary of Activities in Shares of Capital Stock (Details) - shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Common Class A [Member]    
Class of Stock [Line Items]    
Common stock, shares, outstanding, beginning [1] 21,052,883 [2] 20,712,892
Exercise of stock options 200,072 279,177
Vesting of restricted stock units 1,785 1,215
Conversion of Class C to Class A 266 59,599
Common stock, shares, outstanding, ending 21,255,006 21,052,883 [1],[2]
Common Class C [Member]    
Class of Stock [Line Items]    
Common stock, shares, outstanding, beginning [1] 3,120,432 [2] 3,180,031
Exercise of stock options 201,667
Vesting of restricted stock units
Conversion of Class C to Class A (266) (59,599)
Common stock, shares, outstanding, ending 3,321,833 3,120,432 [1],[2]
[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.