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Stock Incentive Plans and Share-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Stock Option Activity

The following table summarizes the Company’s stock option activity during the three months ended March 31, 2017 and 2016: 

 

 

 

Number of Common Shares

 

 

Weighted-

 

 

 

Options

 

 

 

 

 

 

Available

 

 

Average

 

 

 

Outstanding

 

 

Exercisable

 

 

for Grant

 

 

Exercise Price

 

2017

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at December 31, 2016

 

 

3,402,481

 

 

 

411,029

 

 

 

274,596

 

 

$

9.02

 

Authorized

 

 

 

 

 

 

 

 

 

889,259

 

 

 

 

Granted

 

 

847,000

 

 

 

 

 

 

 

(847,000

)

 

 

13.36

 

Exercised

 

 

(19,989

)

 

 

 

 

 

 

 

 

 

7.70

 

Cancelled

 

 

(16,459

)

 

 

 

 

 

 

16,459

 

 

 

10.48

 

Balance at March 31, 2017

 

 

4,213,033

 

 

 

391,040

 

 

 

333,314

 

 

$

9.90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2016

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at December 31, 2015

 

 

2,419,529

 

 

 

724,529

 

 

 

837,635

 

 

$

8.16

 

Authorized

 

 

 

 

 

 

 

 

 

874,709

 

 

 

 

Granted

 

 

160,000

 

 

 

 

 

 

 

(160,000

)

 

 

10.53

 

Exercised

 

 

(159,626

)

 

 

 

 

 

 

 

 

 

10.24

 

Balance at March 31, 2016

 

 

2,419,903

 

 

 

564,903

 

 

 

1,552,344

 

 

$

8.49