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Provision For Income Taxes (Details) (USD $)
3 Months Ended 9 Months Ended
Aug. 31, 2011
Feb. 28, 2011
Aug. 31, 2010
Feb. 28, 2009
Aug. 31, 2011
Aug. 31, 2010
Nov. 30, 2010
Feb. 28, 2011
Loyalty Lab, Inc. [Member]
Nov. 30, 2010
Proginet Corporation [Member]
Aug. 31, 2011
OpenSpirit Corporation [Member]
Nov. 30, 2010
OpenSpirit Corporation [Member]
Aug. 31, 2011
Kabira [Member]
May 31, 2010
Kabira [Member]
May 31, 2010
Netrics [Member]
Feb. 28, 2010
Foresight Corporation [Member]
Effective tax rate 33.00%   30.00%   25.00% 26.00%                  
Tax benefit   $ 3,200,000       $ 2,300,000                  
Tax expense related to prior year true-ups 600,000       600,000                    
Tax expense related to reduction of foreign deferred tax assets due to a corporate tax rate change 600,000       600,000                    
Forecasted annual tax rate         27.00% 32.00%                  
California deferred tax assets, decrease on election of single sales factor net of federal benefit       1,100,000                      
Current deferred tax assets               100,000 1,200,000 (300,000) 1,000,000 (400,000) 1,400,000    
Long term deferred tax assets 75,635,000       75,635,000   66,671,000 3,300,000 (200,000) 600,000 600,000 (100,000)   400,000 6,500,000
Current deferred tax liabilities                           200,000 1,600,000
Long term deferred tax liabilities 6,314,000       6,314,000   4,257,000           1,100,000    
Gross amount of increases for current period in unrecognized tax benefits 200,000                            
Gross unrecognized tax benefits 38,000,000       38,000,000                    
Amount of unrecognized tax benefits would affect the effective tax rate upon realization 18,600,000       18,600,000                    
Accrued interest and penalties on unrecognized tax benefits             $ 900,000