Share-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	$ 891	$ 1,427	$ 4,192	$ 4,245
Number of Options [Abstract]
Unrecognized compensation cost related to stock options	6,943		6,943
Stock Options [Member]
Number of Options [Abstract]
Options outstanding (in shares)			12,172,452
Options granted (in shares)			1,120,000
Options exercised (in shares)			(402,500)
Options forfeited and expired (in shares)			(2,955,412)
Options outstanding (in shares)	9,934,540		9,934,540
Options exercisable (in shares)	6,752,665		6,752,665
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	4	0	4	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	17	21	65	63
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	7	3	24	11
Sales and Marketing [Member]
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	313	402	1,211	1,334
Product Research and Development [Member]
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	103	130	351	327
General and Administrative [Member]
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	253	871	2,343	2,510
Restructuring and other expenses [Member]
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	$ 194	$ 0	$ 194	$ 0