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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Common Stock Shares Reserved for Issuance

Of the 127,624,045 shares of common stock authorized but unissued as of December 31, 2015, the following shares were reserved for issuance:

 

 

 

For outstanding restricted stock units and warrants

 

1,761,177 

For future grants under the 2014 Incentive Award Plan

 

2,488,023 

 

 

4,249,200 

 

Restricted Stock Units Activity

A summary of the Company’s RSU activity is presented below: 

 

 

 

 

 

 

 

 

 

 

Years Ended December 31,

 

2015

 

2014

 

2013

Restricted stock units granted

 

332,782 

 

 

504,255 

 

 

574,017 

Weighted average grant-date fair value of restricted stock units granted

$

45.13 

 

$

42.54 

 

$

34.06 

Total fair value of restricted stock units granted

$

15,019 

 

$

21,449 

 

$

19,550 

Restricted stock units becoming free of restrictions

 

478,686 

 

 

563,117 

 

 

543,921 

Weighted average restriction period (in years)

 

3.9 

 

 

3.9 

 

 

3.9 

 

Summary of Stock Option Activity and Related Information

A summary of the Company’s stock option activity and related information under these plans during the year ended December 31, 2015, is presented below: 

 

 

 

 

 

 

 

 

Number of Shares (Options)

 

 

Weighted Average Exercise Price

Outstanding as of December 31, 2014

 

37,000 

 

$

15.45 

Exercised

 

(37,000)

 

 

15.45 

Outstanding as of December 31, 2015

 

-

 

 

-

 

Summary of Warrant Activity

 

A summary of warrant activity during the year ended December 31, 2015, is presented below: 

 

 

 

 

 

 

 

 

 

Warrants

 

Weighted-Average Exercise Price

 

Outstanding at December 31, 2014

 

133,591 

 

$

37.92 

 

Granted

 

91,179 

 

 

53.07 

 

Forfeited

 

(17,206)

 

 

31.20 

 

Exercised

 

(9,781)

 

 

30.62 

 

Outstanding at December 31, 2015

 

197,783 

 

 

45.85 

 

 

Summarized Information about Warrants Outstanding

The following table summarizes information about warrants outstanding as of December 31, 2015 and 2014: 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Warrants

 

 

 

Fair Value of Warrants

 

Outstanding at December 31,

Grant Date

 

Issued

 

Exercise Price

 

Issued

 

2015

 

2014

Throughout 2010

 

51,627 

 

$20.64 to $27.41

 

$351 

 

-

 

1,886 

Throughout 2011

 

9,324 

 

$27.53 to $33.14

 

79 

 

6,226 

 

9,324 

Throughout 2012

 

71,978 

 

$30.52 to $33.03

 

628 

 

49,975 

 

71,978 

Throughout 2014

 

50,403 

 

$45.62 to $49.06

 

276 

 

50,403 

 

50,403 

Throughout 2015

 

91,179 

 

$42.45 to $54.48

 

1,333 

 

91,179 

 

-

 

 

 

 

 

 

 

 

197,783 

 

133,591 

 

Restricted Stock Units (RSUs) [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Summary of Activity Related to Restricted Stock Units

A summary of activity related to RSUs during the year ended December 31, 2015, is presented below: 

 

 

 

 

 

 

 

 

Unvested Shares

 

Weighted-Average Grant Date Fair Value Per Share

Outstanding at December 31, 2014

 

1,200,884 

 

$

36.06 

Granted

 

332,782 

 

 

45.13 

Forfeited

 

(47,679)

 

 

40.24 

Vested and Issued

 

(432,165)

 

 

34.44 

Vested and Unissued

 

(46,521)

 

 

30.93 

Outstanding at December 31, 2015

 

1,007,301 

 

 

39.74 

 

Performance Shares [Member]  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Summary of Performance-Based Restricted Stock Units Activity and Related Information

A summary of activity related to PSUs during the year ended December 31, 2015, is presented below: 

 

 

 

 

 

 

 

 

Unvested Shares

 

Weighted-Average Grant Date Fair Value Per Share

Outstanding at December 31, 2014

 

54,723 

 

$

42.33 

Granted

 

238,690 

 

 

44.96 

Outstanding at December 31, 2015

 

293,413 

 

 

44.47