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Dividends and Earnings Per Share
12 Months Ended
Dec. 31, 2011
Dividends and Earnings Per Share [Abstract]  
Dividends and Earnings Per Share
15. Dividends and Earnings Per Share

Total cash dividends during 2011 were $9,158,000 or $11.75 per share of common stock, an increase of 3.5% per share from $8,855,000 or $11.35 per share in 2010. In 2009, cash dividends totaled $8,596,000 or $11.00 per share.

Earnings per share amounts are computed by dividing net income by the weighted average number of common shares outstanding for the period. The following table calculates the earnings per share for the periods indicated.

(net income in thousands)
 
2011
  
2010
  
2009
 
Net Income
 $22,209  $21,118  $20,013 
Average Number of Common Shares Outstanding
  779,424   780,619   782,754 
Per Share Amount
 $28.49  $27.05  $25.57