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Common Stock and Stock Compensation (Tables)
 12 Months Ended
Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity
The following table summarizes option activities from December 31, 2011 through December 31, 2012:
 
 
Number of Shares
 
Weighted-Average Exercise Price per Share
 
Weighted-Average Remaining Contractual Term (in years)
 
Aggregate Intrinsic Value (in thousands)
 Outstanding as of December 31, 2011
 
411,726

 
$20.47
 
 
 
 
Granted
 
5,989

 
$18.07
 
 
 
 
Exercised
 
(27,782
)
 
$12.77
 
 
 
 
Forfeited
 
(181,071
)
 
$21.25
 
 
 
 
Outstanding as of December 31, 2012
 
208,862

 
$20.75
 
4.3
 
$252
Vested or expected to vest at December 31, 2012
 
202,526

 
$20.69
 
4.2
 
$250
Exercisable at December 31, 2012
 
166,155

 
$20.77
 
3.6
 
$216
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The following table summarizes the weighted-average assumptions for stock options granted:
 
Year Ended December 31,
 
2012
 
2011
 
2010
Expected life (years)
3.02

 
4.36

 
5.6

Risk-free interest rate
0.4
%
 
1.2
%
 
2.3
%
Volatility
62
%
 
74
%
 
63
%
Dividend yield
—
 
—
 
—
Schedule of Share-based Compensation, Restricted Stock Units Activity
 The following table summarizes restricted stock activities from December 31, 2011 through December 31, 2012:
 
 
Number of Shares
 
Weighted-Average Grant-Date Fair Value
 Outstanding as of December 31, 2011
388,318

 
$23.65
Granted
167,120

 
$16.31
Restricted Stock Release
(235,029
)
 
$22.44
Canceled
(94,007
)
 
$18.31
Outstanding as of December 31, 2012
226,402

 
$21.70
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The following table summarizes stock-based compensation expense as recorded in the Consolidated Statements of Operations (in thousands):
 
Year Ended December 31,
 
2012
 
2011
 
2010
Cost of revenue
$
376

 
$
193

 
$
97

 
 
 
 
 
 
Sales and marketing
$
148

 
$
55

 
$
10

Technology and design
133

 
57

 
19

General and administrative
2,902

 
2,712

 
1,295

Included in operating expenses
3,183

 
2,824

 
1,324

 
 
 
 
 
 
Total stock-based compensation expense
$
3,559

 
$
3,017

 
$
1,421
Schedule of Unrecognized Compensation Cost, Nonvested Awards
As of December 31, 2012, total compensation cost not yet recognized and the weighted-average remaining term is as follows ($ in thousands):
 
Expense not yet
recognized
 
Weighted Average Remaining Term (in years)
Stock Options
$
439

 
1.8

Restricted Stock Units
$
2,528

 
1.2