XML 33 R118.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation (Details Textual) (USD $)
12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2011
Jan. 31, 2013
Restricted Shares and Performance Shares [Member]
Jan. 31, 2013
Stock option costs [Member]
Jan. 31, 2012
Stock option costs [Member]
Jan. 31, 2011
Stock option costs [Member]
Jan. 31, 2013
Restricted stock costs [Member]
Jan. 31, 2012
Restricted stock costs [Member]
Jan. 31, 2011
Restricted stock costs [Member]
Jan. 31, 2013
Performance Shares [Member]
Apr. 30, 2012
Executive [Member]
Performance Shares [Member]
Jan. 31, 2013
Executive [Member]
Performance Shares [Member]
Jan. 31, 2009
Executive [Member]
Performance Shares [Member]
Jan. 31, 2013
Minimum [Member]
Stock option costs [Member]
Jan. 31, 2013
Minimum [Member]
Restricted stock costs [Member]
Jan. 31, 2013
Minimum [Member]
Executive [Member]
Performance Shares [Member]
Jan. 31, 2013
Maximum [Member]
Stock option costs [Member]
Jan. 31, 2013
Maximum [Member]
Restricted stock costs [Member]
Jan. 31, 2013
Maximum [Member]
Executive [Member]
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                        
Maximum number of shares to be issued 16,750,000     5,400,000                                
Number of shares available for granting 3,290,529     1,690,034                                
Maximum Annual Award to Individuals         400,000     225,000     100,000                  
Maximum term of stock options         10 years                              
Vesting period of stock awards                             3 years 3 years   4 years 4 years  
Amount of grant date fair value expensed immediately for awards granted to retirement-eligible grantees $ 726,000 $ 1,022,000 $ 1,136,000                                  
Stock based compensation reversed 1,622,000                                      
Excess tax benefits from share-based compensation as financing cash flows 0 0 0                                  
Fair value of stock options grant date $ 14.74       $ 9.24 $ 11.20 $ 9.99                          
Total intrinsic value of stock option exercised         954,000 84,000 389,000                          
Cash received from stock option exercised         8,368,000 195,000 2,621,000                          
Income tax benefit realized         0 0 0                          
Unrecognized compensation cost         4,206,000     17,822,000     4,642,000                  
Weighted average period of unrecognized compensation cost         2 years 3 months 15 days     2 years 6 months                        
Grant date fair value               $ 14.75 $ 17.72 $ 15.89 $ 20.74 $ 20.74   $ 36.38            
Total fair value of shares that vested               9,156,000 8,503,000 8,821,000                    
Purchase of treasury stock, Shares 129,568 90,104 54,732                                  
Purchase of treasury stock $ 1,963,000 $ 1,670,000 $ 786,000                                  
Minimum performance period                         1 year              
Shares, Granted               791,432     301,954 301,954   172,609            
Percentage of shares earned                                 0.00%     200.00%