Stock-based Compensation Plans and Awards (Tables)
 9 Months Ended
Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-based Compensation Expense

Stock-based compensation expense related to all employee and non-employee stock-based awards recognized in the condensed consolidated statements of operations was as follows (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three months ended September 30, 

 

Nine months ended September 30, 

 

 

    

2016

    

2015 (1)

    

2016

    

2015 (1)

 

Service costs

 

$
142

 

$
182

 

$
1,054

 

$
806

 

Sales and marketing

 

 
145

 

 
159

 

 
586

 

 
511

 

Product development

 

 
290

 

 
397

 

 
1,206

 

 
1,576

 

General and administrative

 

 
1,103

 

 
821

 

 
3,272

 

 
2,790

 

Total stock-based compensation

 

$
1,680

 

$
1,559

 

$
6,118

 

$
5,683

 

(1)

Certain 2015 personnel costs, including stock-based compensation, were reclassified out of general and administrative to service costs, sales and marketing and product development to conform to 2016 presentation. See Note 2 for additional information.

Stock Options Activity

Stock option activity is as follows (in thousands):

 

 

 

 

 

 

Number of

 

 

    

options

 

 

 

outstanding

 

Outstanding at December 31, 2015

 
3,199

 

Options granted

 
253

 

Options exercised

 
(50)

 

Options forfeited or cancelled

 
(520)

 

Outstanding at September 30, 2016

 
2,882

 

 

Restricted Stock Unit Activity

Restricted stock unit activity is as follows (in thousands):

 

 

 

 

 

 

Number of

 

 

    

shares

 

Unvested at December 31, 2015

 
977

 

Granted

 
1,885

 

Vested

 
(509)

 

Forfeited

 
(356)

 

Unvested at September 30, 2016

 
1,997