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The following table sets forth information with respect to nonvested options for the six months ended June 30, 2025: (Details)
 6 Months Ended
Jun. 30, 2025
$ / shares
shares
Equity:  
Nonvested options - beginning of year | shares 118,650
Weighted average grant date fair value, beginning of year | $ / shares $ 30.02
Nonvested options granted | shares 0
Weighted average grant date fair value, granted | $ / shares $ 0
Nonvested options vested or forfeited | shares (7,100)
Weighted average grant date fair value, vested or forfeited | $ / shares $ 24.34
Nonvested options - end of year | shares 111,550
Weighted average grant date fair value, end of year | $ / shares $ 30.38