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Share-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2011
Share-based Compensation [Abstract]  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
The following table summarizes activity under the 2005 Incentive Plan:
 
 
Restricted Stock Units &
Performance Share Awards
 
Restricted Stock Awards
 
 
Units
 
Weighted Average
Fair Value
 
Shares
 
Weighted Average
Fair Value
Non-vested Balance, December 31, 2008
 
124

 
$
15.60

 
25

 
$
18.14

Granted
 
227

 
17.23

 
80

 
15.13

Vested
 
(285
)
 
16.59

 
(21
)
 
16.75

Forfeited
 
(12
)
 
16.51

 
(10
)
 
20.59

Non-vested Balance, December 31, 2009
 
54

 
17.01

 
74

 
15.15

Granted
 
510

 
13.52

 
8

 
26.78

Vested
 
(409
)
 
13.85

 
(38
)
 
17.27

Forfeited
 
(45
)
 
13.84

 
(23
)
 
15.27

Non-vested Balance, December 31, 2010
 
110

 
13.59

 
21

 
15.86

Granted
 
518

 
26.95

 
27

 
31.38

Vested
 
(453
)
 
23.83

 
(36
)
 
27.45

Forfeited
 
(12
)
 
23.52

 
—

 
—

Non-vested Balance, December 31, 2011
 
163

 
$
26.85

 
12

 
$
16.17
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest [Table Text Block]
The following table summarizes Equity Inducement Awards activity:
 
 
Restricted Stock Units &
Performance Share Awards
 
Restricted Stock Awards
 
 
Units
 
Weighted Average
Fair Value
 
Shares
 
Weighted Average
Fair Value
Non-vested Balance, December 31, 2008
 
—

 
$
—

 
—

 
$
—

Granted
 
50

 
16.44

 
100

 
17.98

Vested
 
—

 
—

 
—

 
—

Forfeited
 
—

 
—

 
—

 
—

Non-vested Balance, December 31, 2009
 
50

 
16.44

 
100

 
17.98

Granted
 
55

 
18.11

 
—

 
—

Vested
 
(57
)
 
17.62

 
(46
)
 
17.93

Forfeited
 
—

 
—

 
—

 
—

Non-vested Balance, December 31, 2010
 
48

 
16.96

 
54

 
18.01

Granted
 
50

 
28.02

 
—

 
—

Vested
 
(30
)
 
23.25

 
(45
)
 
18.36

Forfeited
 
(35
)
 
28.02

 
—

 
—

Non-vested Balance, December 31, 2011
 
33

 
$
16.44

 
9

 
$
16.44
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
The following summarizes the combined stock option activity during the three-year period ended December 31, 2011:
 
 
 
 
Options Outstanding
 
 
Options Available
for Grant
 
Shares
 
Exercise Price
per Share
Balance, December 31, 2008
 
—

 
2,375

 
$6.44 to $27.50

Plan shares expired
 
(26
)
 
—

 
—

Cancelled
 
26

 
(26
)
 
$6.44 to $16.80

Exercised
 
—

 
(1,053
)
 
$6.44 to $21.01

Balance, December 31, 2009
 
—

 
1,296

 
$10.33 to $27.50

Plan shares expired
 
(7
)
 
—

 
—

Cancelled
 
7

 
(7
)
 
$11.94 to $16.80

Exercised
 
—

 
(743
)
 
$10.33 to $27.50

Balance, December 31, 2010
 
—

 
546

 
$10.33 to $27.50

Plan shares expired
 
(2
)
 
—

 
—

Cancelled
 
2

 
(2
)
 
$11.81 to $15.75

Exercised
 
—

 
(260
)
 
$10.33 to $21.17

Balance, December 31, 2011
 
—

 
284

 
$10.33 to $27.50
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
The following summarizes certain weighted average information on options outstanding at December 31, 2011:
 
 
Options Outstanding
 
 
 
 
 
 
 
 
Weighted Average
Remaining
Contractual Life (years)
 
Weighted
Average
Exercise Price
 
Options Exercisable
Range of Exercise Prices
 
Number Outstanding
 
 
 
Number Exercisable
 
Weighted
Average
Exercise Price
$10.33 to $14.88
 
214

 
1.89

 
$
13.00

 
214

 
$
13.00

$16.80 to $17.00
 
51

 
1.72

 
$
16.81

 
51

 
$
16.81

$25.33 to $27.50
 
19

 
0.40

 
$
26.94

 
19

 
$
26.94

 
 
284

 
1.76

 
$
14.62

 
284

 
$
14.62
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
The following provides tabular disclosure as of December 31, 2011 of the number of securities to be issued upon the exercise of outstanding options or vesting of restricted stock units, the weighted average exercise price of outstanding options, and the number of securities remaining available for future issuance under equity compensation plans, aggregated into zero categories — plans that have been approved by stockholders and plans that have not:
Equity Compensation Plans
 
Number of Securities
to be Issued
Upon Exercise of
Outstanding Options
or Vesting of
Restricted Stock Units
 
Weighted-Average
Exercise Price of Outstanding Options
 
Number of Securities
Remaining Available
for Future Issuance
Under Equity Compensation Plans
Approved by stockholders:
 
 
 
 
 
 
1996 Option Plan
 
223

 
$
14.76

 
—

1996 Directors Plan
 
36

 
$
16.75

 
—

2005 Performance Incentive Plan
 
176

 
$
—

 
1,974

Employee Stock Purchase Plan
 
1,073

 
$
—

 
1,073

 
 
1,508

 
$
15.03

 
3,047

Not approved by stockholders:
 
 
 
 
 
 
1998 Option Plan
 
25

 
$
10.33

 
—

Non-Plan Awards
 
44

 
$
—

 
—

 
 
1,577

 
$
10.33

 
3,047
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
The Company has recognized total share-based compensation as follows (in thousands):
 
 
Years Ended December 31,
 
 
December 31, 2011
 
December 31, 2010
 
December 31, 2009
Cost of maintenance services
 
$
492

 
$
482

 
$
590

Cost of consulting services
 
1,767

 
1,565

 
1,107

Product development
 
1,637

 
1,149

 
721

Sales and marketing
 
3,123

 
2,628

 
2,188

General and administrative
 
5,997

 
5,670

 
3,489

Total share-based compensation expense
 
$
13,016

 
$
11,494

 
$
8,095