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Shareholders' Equity (Narrative) (Details) (USD $)
 0 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended
Oct. 28, 2011
Dec. 31, 2012
Jan. 31, 2012
Oct. 31, 2010
Oct. 31, 2013
Jul. 31, 2013
Apr. 30, 2013
Jan. 31, 2013
Oct. 31, 2012
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2012
Oct. 31, 2013
vote
Oct. 31, 2012
Oct. 31, 2011
Sep. 20, 2012
Equity, Class of Treasury Stock [Line Items]                                
Number of shares authorized to be repurchased (shares)                               320,000
Purchase and retire percentage of shares in common stock outstanding                               4.90%
Outstanding common stock remaining to be repurchased (shares)         123,500               123,500      
Dividend declared, rights per share 1                              
Dividend declared, right, no par value (usd per share) $ 0                              
Common stock, no par value (usd per share)                                    
Minimum percentage of stock owner in stockholder protection rights agreement                         15.00%      
Preferred stock dividend, par value (usd per share)         0               0      
Preferred shares, exercise price (usd per share)                         $ 25      
Preferred shares, number of votes                         1,000      
Dividend rate, percentage above common stock                         1000.00%      
Preferred shares, rights expiration date                         Nov. 02, 2021      
Preferred shares, rights redemption price (usd per share)         $ 0.0001               $ 0.0001      
Preferred shares reserved for issuance upon exercise of rights (shares)         100,000               100,000      
Cash dividends declared per common share (usd per share)   $ 0.02 $ 0.015 $ 0.01 $ 0.02 $ 0.02 $ 0.02 $ 0.02 $ 0.015 $ 0.015 $ 0.015 $ 0.015 $ 0.08 $ 0.06 $ 0.04  
Series A Preferred Stock [Member]
                                
Equity, Class of Treasury Stock [Line Items]                                
Preferred shares per right (shares)                         0.001      
Minimum [Member]
                                
Equity, Class of Treasury Stock [Line Items]                                
Repurchase period                         12 months      
Maximum [Member]
                                
Equity, Class of Treasury Stock [Line Items]                                
Repurchase period                         24 months