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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Unvested Restricted Stock Units Activity
The following table summarizes activity related to our RSUs under the Equity Incentive Plan for the nine months ended September 30, 2017:
 
Number
Outstanding
 
Weighted
Average
Grant Date
Fair Value
 
Weighted Average Remaining Contractual Term
(in years)
 
Aggregate Intrinsic Value
   (in thousands) (1)
Unvested as of January 1, 2017
1,873,737

 
$
27.58

 
 
 
 
Granted
743,926

 
$
31.77

 
 
 
 
Vested
(858,470
)
 
$
26.85

 
 
 
 
Forfeited / Canceled
(146,769
)
 
$
31.15

 
 
 
 
Unvested as of September 30, 2017
1,612,424

 
$
29.58

 
 
 
 
Expected to vest after September 30, 2017
1,555,391

 
$
29.56

 
2.7
 
$
55,979

(1)
The aggregate intrinsic value of unvested and expected to vest RSUs represents the total pretax intrinsic value (the fair value of the Company's stock on the last day of each period multiplied by the number of units) that would have been received by the holders had all RSUs vested. This amount changes based on the market price of the Company’s common stock.
Schedule of Stock Option Activity
The following table summarizes activity related to our stock options under the Equity Incentive Plan for the nine months ended September 30, 2017:
 
Number
Outstanding
 
Weighted
Average Exercise Price
 
Weighted Average Remaining Contractual Term
(in years)
 
Aggregate Intrinsic Value
   (in thousands) (1)
Balance as of January 1, 2017
2,623,217

 
$
9.19

 
 
 
 
Exercised
(772,157
)
 
$
8.61

 
 
 
$
18,256

Forfeited / Canceled
(15,800
)
 
$
24.12

 
 
 
 
Balance as of September 30, 2017
1,835,260

 
$
9.31

 
1.8
 
$
48,969

Exercisable as of September 30, 2017
1,835,260

 
$
9.31

 
1.8
 
$
48,969

Exercisable as of September 30, 2017 and expected to vest thereafter
1,835,260

 
$
9.31

 
1.8
 
$
48,969

(1)
The aggregate intrinsic value of outstanding, exercisable and expected to vest options represents the total pretax intrinsic value (the difference between the fair value of the Company's stock on the last day of each period and the exercise price, multiplied by the number of options where the fair value exceeds the exercise price) that would have been received by the option holders had all option holders exercised their options as of the last day of the period indicated. This amount changes based on the market price of the Company’s common stock
Schedule Of Pre-Tax Stock-Based Compensation Expense
The following table summarizes the components of pre-tax stock-based compensation expense for our continuing operations (in thousands):
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2017
 
2016
 
2017
 
2016
RSUs
$
5,139

 
$
5,546

 
$
17,576

 
$
16,871

Stock options
—

 
46

 
6

 
112

Total stock-based compensation expense
$
5,139

 
$
5,592

 
$
17,582

 
$
16,983