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Share-Based Payments: (Tables)
 3 Months Ended
Mar. 31, 2023
Equity:  
The following table sets forth information with respect to nonvested options for the three months ended March 31, 2023:

The following table sets forth information with respect to nonvested options for the three months ended March 31, 2023:

 

   Number of Shares   Weighted Average
Grant-Date Fair Value		 
Nonvested options – beginning of period   168,730   $16.31 
Nonvested options granted   —    — 
Nonvested options vested or forfeited   (23,080)  $13.58 
Nonvested options – end of period   145,650   $16.74 
The following table summarizes stock option information as of March 31, 2023:

The following table summarizes stock option information as of March 31, 2023:

 

   Shares   Weighted Average
Exercise Price		 
         
Outstanding at January 1, 2023   441,580   $67.30 
Options forfeited   (15,480)   70.48 
Options exercised   (88,710)   55.57 
           
Outstanding at March 31, 2023   337,390   $70.24 
           
Options exercisable   191,740   $61.38 
Options available for future grants   574,455      
Cash proceeds, tax benefits and intrinsic value related to stock options exercised during the three months ended March 31, 2023 and 2022 were as follows:

Cash proceeds, tax benefits and intrinsic value related to stock options exercised during the three months ended March 31, 2023 and 2022 were as follows:

 

(In thousands)  March 31,  
2023		   March 31,  
2022		 
         
Cash proceeds from stock options exercised  $4,929   $708 
Tax benefits   780    75 
Intrinsic value of stock options exercised   5,403    635