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Stock-Based Compensation
 9 Months Ended
Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation
Stock-Based Compensation
Options
The following is a summary of option activity for the nine months ended September 30, 2017:
 
 
Number of
Options
 
Weighted-
Average
Exercise
Price
 
Weighted-
Average
Remaining
Contractual
Term
(in years)
 
Aggregate
Intrinsic
Value
(in thousands)
Outstanding at January 1, 2017
11,426,296

 
$
6.10

 
—

 
—

Granted
368,894

 
$
4.13

 
—

 
—

Exercised
(1,351,648
)
 
$
0.87

 
—

 
—

Forfeited
(1,095,455
)
 
$
9.07

 
—

 
—

Expired
(1,120,351
)
 
$
11.36

 
—

 
—

Outstanding at September 30, 2017
8,227,736

 
$
5.76

 
6.7

 
$
13,831

Exercisable at September 30, 2017
5,948,010

 
$
4.98

 
6.1

 
$
13,510

Vested or expected to vest as of September 30, 2017
8,164,605

 
$
5.75

 
6.7

 
$
13,827

Total compensation cost related to nonvested option awards not yet recognized as of September 30, 2017 was $7.3 million and will be recognized over a weighted-average period of approximately 1.8 years. The aggregate intrinsic value of employee options exercised during the nine months ended September 30, 2017 and 2016 was $5.0 million and $2.4 million, respectively.

Restricted Stock Units

The following table summarizes our activities of Restricted Stock Units ("RSUs") and Performance Restricted Stock Units ("PRSUs") during the nine months ended September 30, 2017:
 
Number of RSUs
 
Weighted-Average Grant Date Fair Value
Unvested at January 1, 2017
3,888,768

 
$
8.46

RSUs and PRSUs granted
1,791,690

 
$
4.50

RSUs vested
(546,671
)
 
$
9.09

RSUs and PRSUs forfeited/expired
(1,604,916
)
 
$
8.15

Unvested at September 30, 2017
3,528,871

 
$
6.30

Expected to vest after September 30, 2017
3,121,430

 
$
6.36



As of September 30, 2017, there was $16.3 million of unrecognized compensation cost related to unvested RSUs and PRSUs, which is expected to be recognized over the next 2.7 years.
Stock-based compensation expense related to stock options, RSUs, PRSUs and Employee Stock Purchase Program are included in the following line items in our accompanying condensed consolidated statements of operations for the three and nine months ended September 30, 2017 and 2016 (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
Sales and marketing
$
538

 
$
920

 
$
1,830

 
$
2,749

Technology and analytics
499

 
793

 
1,824

 
2,437

Processing and servicing
99

 
227

 
429

 
781

General and administrative
1,920

 
1,821

 
5,438

 
5,456

Total
$
3,056

 
$
3,761

 
$
9,521

 
$
11,423