Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Tables)

v2.4.1.9
Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2014
Stock-Based Compensation  
Schedule of employee stock-based compensation expense

 

                                                                                                                                                                                    

 

 

Year ended December 31,

 

 

 

2014

 

2013

 

2012

 

Employee stock-based compensation expense

 

$

11,423

 

$

8,738

 

$

4,342

 

Tax effect on employee stock-based compensation expense

 

 

(4,434

)

 

(3,196

)

 

(1,643

)

​  

​  

​  

​  

​  

​  

Net effect on income

 

$

6,989

 

$

5,542

 

$

2,699

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

 

Schedule of weighted average assumptions used to value options granted

 

                                                                                                                                                                                    

 

 

Year ended December 31,

 

 

 

2014

 

2013

 

2012

 

Grant date fair value of options

 

$

16.81 

 

$

6.11 

 

$

4.96 

 

Volatility

 

 

37.3 

%

 

40.4 

%

 

39.7 

%

Risk-free interest rate

 

 

1.9 

%

 

1.0 

%

 

1.2 

%

Dividend yield

 

 

0.0 

%

 

0.0 

%

 

0.0 

%

Expected term (in years)

 

 

6.0 

 

 

6.0 

 

 

6.0 

 

 

Summary of option activity under the Company's plans

 

                                                                                                                                                                                    

 

 

Options

 

Weighted-
Average
Exercise Price

 

Weighted-Average
Remaining
Contractual Life
(Years)

 

Aggregate
Intrinsic Value

 

Outstanding as of December 31, 2011

 

 

4,863,718

 

$

8.19

 

 

6.8

 

$

18,704

 

Granted

 

 

738,915

 

 

12.53

 

 

 

 

 

 

 

Exercised

 

 

(298,947

)

 

6.92

 

 

 

 

 

 

 

Forfeited

 

 

(26,274

)

 

11.03

 

 

 

 

 

 

 

​  

​  

Outstanding as of December 31, 2012

 

 

5,277,412

 

 

8.86

 

 

6.3

 

 

26,885

 

Granted

 

 

190,413

 

 

15.34

 

 

 

 

 

 

 

Exercised

 

 

(721,050

)

 

8.86

 

 

 

 

 

 

 

Forfeited

 

 

(109,304

)

 

12.33

 

 

 

 

 

 

 

​  

​  

Outstanding as of December 31, 2013

 

 

4,637,471

 

 

9.04

 

 

5.4

 

 

31,877

 

Granted

 

 

214,253

 

 

42.92

 

 

 

 

 

 

 

Exercised

 

 

(573,298

)

 

9.05

 

 

 

 

 

 

 

Forfeited

 

 

(13,089

)

 

18.12

 

 

 

 

 

 

 

​  

​  

Outstanding as of December 31, 2014

 

 

4,265,337

 

 

10.73

 

 

4.7

 

 

163,830

 

​  

​  

​  

​  

​  

Options exercisable

 

 

3,797,011

 

 

8.72

 

 

4.2

 

 

153,474

 

​  

​  

​  

​  

​  

 

Schedule of other information

 

                                                                                                                                                                                    

 

 

Year ended December 31,

 

 

 

2014

 

2013

 

2012

 

Total intrinsic value of options exercised

 

$

20,867 

 

$

13,745 

 

$

1,611 

 

Cash received from exercises of stock options

 

 

5,190 

 

 

6,400 

 

 

2,069 

 

Cash received from issuance of restricted stock

 

 

 

 

 

 

2,759 

 

 

Summary of the activity for unvested restricted stock awards granted under the Company's plans

 

                                                                                                                                                                                    

 

 

Number of
Shares

 

Weighted-Average
Grant
Date Fair Value
per Share

 

Balance at December 31, 2011

 

 

73,820

 

$

12.37

 

Granted

 

 

714,934

 

 

12.50

 

Vested

 

 

(24,568

)

 

 

Expired/cancelled

 

 

(1,064

)

 

12.45

 

Forfeited

 

 

(4,132

)

 

12.49

 

​  

​  

Balance at December 31, 2012

 

 

758,990

 

 

12.49

 

Granted

 

 

386,245

 

 

19.54

 

Vested

 

 

(74,298

)

 

 

Forfeited

 

 

(169,386

)

 

12.69

 

​  

​  

Balance at December 31, 2013

 

 

901,551

 

 

16.50

 

Granted

 

 

360,834

 

 

41.99

 

Vested

 

 

(143,264

)

 

 

Forfeited

 

 

(20,447

)

 

28.39

 

​  

​  

Balance at December 31, 2014

 

 

1,098,674

 

 

33.72

 

​  

​  

​  

​  

​