Share-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	$ 1,265	$ 1,530
Number of shares
Unrecognized compensation cost related to stock options and restricted stock	5,784
Stock Options [Member]
Number of Options [Abstract]
Options outstanding (in shares)	5,992,868
Options granted (in shares)	95,000
Options exercised (in shares)	(186,250)
Options forfeited and expired (in shares)	(38,125)
Options outstanding (in shares)	5,863,493
Options exercisable (in shares)	4,265,993
Restricted Stock [Member]
Number of shares
Restricted stock outstanding (in shares)	1,942,748
Restricted stock granted (in shares)	0
Restricted stock vested (in shares)	(108,223)
Restricted stock forfeited (in shares)	0
Restricted stock outstanding (in shares)	1,834,525
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	13
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	23	28
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	22	23
Sales and Marketing [Member]
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	334	641
Product Research and Development [Member]
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	189	200
General and Administrative [Member]
Employee Service Share Based Compensation, Allocation Of Recognized Period Costs [Line Items]
Share-based compensation expense, net of tax	$ 684	$ 625

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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-Publisher FASB

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Unrecognized cost of unvested share-based compensation awards.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Number of share options (or share units) exercised during the current period.

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