Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2014
Quarterly Dividends Declared

The Company’s board of directors declared the following quarterly dividends on the Company’s Class A common stock and Class B common stock:

 

Approval Date

   Per share
dividend
     Date of record    Total amount
(in thousands)
     Payment date

January 2012

   $ 0.02       February 3, 2012    $ 751       February 15, 2012

April 2012

   $ 0.02       May 4, 2012    $ 743       May 15, 2012

July 2012

   $ 0.02       August 3, 2012    $ 755       August 15, 2012

August 2012

   $ 0.015       August 16, 2012    $ 566       August 31, 2012

October 2012

   $ 0.035       November 2, 2012    $ 1,300       November 15, 2012

December 2012

   $ 0.14       December 18, 2012    $ 5,300       December 31, 2012

January 2014

   $ 0.02       February 7, 2014    $ 771       February 18, 2014

April 2014

   $ 0.02       May 5, 2014    $ 846       May 15, 2014

July 2014

   $ 0.02       August 5, 2014    $ 856       August 15, 2014

October 2014

   $ 0.02       November 7, 2014    $ 857       November 18, 2014
Stock Based Compensation Expense Included in Operating Expense

Stock-based compensation expense was included in the following operating expense categories (in thousands):

 

     Twelve months ended December 31,  
     2012      2013      2014  

Service costs

   $ 1,869       $ 1,180       $ 1,382   

Sales and marketing

     2,029         645         894   

Product development

     1,038         1,635         2,595   

General and administrative

     10,702         5,777         7,032   
  

 

 

    

 

 

    

 

 

 

Total stock-based compensation

$ 15,638    $ 9,237    $ 11,903   
  

 

 

    

 

 

    

 

 

 
Assumptions to Estimate Fair Value for Stock Options at Grant Date

The following weighted average assumptions were used in determining the fair value of time-vested stock options granted for the periods indicated:

 

     Years ended December 31,
     2012    2013    2014

Expected life (in years)

   4.00 – 6.25    4.00 – 6.25    4.00

Risk-free interest rate

   0.47% to 0.78%    0.57% to 2.10%    1.25% to 1.45%

Expected volatility

   65% to 70%    54% to 64%    55% to 62%

Weighted average expected volatility

   67%    57%    56%

Expected dividend yield

   1.33% to 3.11%    0.87% to 2.33%    0.76% to 2.03%

 

The following weighted average assumptions were used in determining the fair value for options granted with vesting based on a combination of certain service and market conditions for the periods indicated:

 

     2012    2013

Expected life (in years)

   1.50 – 5.74    1.18 – 2.28

Risk-free interest rate

   1.81%    2.89%

Expected volatility

   60%    61%

Weighted average expected volatility

   60%    61%

Expected dividend yield

   3.17%    0.89%
Stock Option and Restricted Stock Award Activity

Stock option, restricted stock award and restricted stock unit activity during the period is as follows:

 

     Options and
Restricted
Stock
available for
grant
    Number of
options
outstanding
    Weighted
average

exercise
price
of options
     Weighted
average
remaining
contractual

term
(in years)
     Aggregate
intrinsic value
(in thousands)
 

Balance at December 31, 2013

     1,702,174        7,707,713      $ 7.48         6.99       $ 17,148   

Increase to option pool January 1, 2014

     1,924,511        —            

Options granted

     (1,340,686     1,340,686        9.32         

Restricted stock granted

     (698,992     —            

Restricted stock forfeited

     117,354        —            

Options exercised

     —         (747,899     5.59         

Options expired

     186,823        (186,823     11.96         

Options forfeited

     316,449        (316,449     6.55         
  

 

 

   

 

 

         

Balance at December 31, 2014

  2,207,633      7,797,228    $ 7.90      6.58    $ 800   
  

 

 

   

 

 

         

Options exercisable at December 31, 2014 (1)

  4,811,469    $ 8.29      5.33    $ 308   

 

(1) Includes 1,199,400 stock options, which have vested based on meeting a combination of certain service and market conditions.
Information Related to Stock Compensation Activity

Information related to stock compensation activity during the period indicated is as follows:

 

     Years ended December 31,  
     2012      2013      2014  

Weighted average fair value of options granted

   $ 1.78       $ 2.56       $ 3.89   

Intrinsic value of options exercised (in thousands)

   $ 7       $ 1,463       $ 4,016   

Total grant date fair value of restricted stock vested (in thousands)

   $ 22,015       $ 5,751       $ 6,568   
Summary of Restricted Stock Awards and Restricted Stock Units

Restricted stock awards and restricted stock unit activity during the period is as follows:

 

     Shares/
Units
     Weighted Average
Grant Date

Fair Value
 

Unvested at December 31, 2013

     2,709,443         5.41   

Granted

     698,992         9.30   

Vested

     (1,150,319      5.71   

Forfeited

     (117,354      4.77   
  

 

 

    

 

 

 

Unvested at December 31, 2014

  2,140,762      6.55