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Share-Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expense, net of tax $ 1,530 $ 1,643
Number of shares    
Unrecognized compensation cost related to stock options and restricted stock 9,870  
Stock Options [Member]
   
Number of Options [Abstract]    
Options outstanding (in shares) 8,918,290  
Options granted (in shares) 225,000  
Options exercised (in shares) 0  
Options forfeited and expired (in shares) (1,860,365)  
Options outstanding (in shares) 7,282,925  
Options exercisable (in shares) 4,748,550  
Restricted Stock [Member]
   
Number of shares    
Restricted stock outstanding (in shares) 2,100,000  
Restricted stock granted (in shares) 400,000  
Restricted stock vested (in shares) (100,000)  
Restricted stock forfeited (in shares) 0  
Restricted stock outstanding (in shares) 2,400,000  
Software and other cost of sales [Member]
   
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expense, net of tax 13 0
Professional Services Cost of Sales [Member]
   
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expense, net of tax 28 20
Maintenance and EDI Cost of Sales [Member]
   
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expense, net of tax 23 9
Sales and Marketing [Member]
   
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expense, net of tax 641 545
Product Research and Development [Member]
   
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expense, net of tax 200 130
General and Administrative [Member]
   
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expense, net of tax $ 625 $ 939