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Share-based compensation (Tables)
12 Months Ended
Dec. 31, 2020
Summary of Share Option Activity

The following table summarizes the share option activities for the years ended December 31, 2018, 2019 and 2020:

    

    

    

Weighted 

    

Weighted

Weighted-

average 

average

average

remaining 

Aggregate

Number of

exercise

grant-date

contractual life

intrinsic

    

share options

    

price (USD)

    

fair value (USD)

    

 (years)

    

value (USD)

Outstanding, January 1, 2018

 

389,815

 

3.90

 

 

1.64

 

Vested and expected to vest at January 1, 2018

 

389,693

 

3.90

 

0.95

 

1.64

 

Exercisable at January 1, 2018

 

389,190

 

3.90

 

0.95

 

1.64

 

Expired

 

(373,315)

 

3.89

 

  

 

  

 

  

Outstanding, December 31, 2018

 

16,500

 

3.97

 

 

1.37

 

Vested and expected to vest at December 31, 2018

 

16,500

 

3.97

 

1.56

 

1.37

 

Exercisable at December 31, 2018

 

16,500

 

3.97

 

1.56

 

1.37

 

Expired

 

(6,500)

 

3.97

 

Outstanding, December 31, 2019

 

10,000

 

3.97

 

1.16

Vested and expected to vest at December 31, 2019

 

10,000

 

3.97

 

1.01

1.16

Exercisable at December 31, 2019

 

10,000

 

3.97

 

1.01

1.16

Expired

 

(10,000)

 

3.97

 

Outstanding, December 31, 2020

 

 

 

Vested and expected to vest at December 31, 2020

 

 

 

Exercisable at December 31, 2020

 

 

 

Schedule of Recognized Compensation Costs

Total compensation costs recognized for the years ended December 31, 2018, 2019 and 2020 are as follows:

Years ended December 31, 

(In thousands)

    

2018

    

2019

    

2020

Sales and marketing expenses

 

404

 

381

 

185

General and administrative expenses

 

2,245

 

2,453

 

1,209

Research and development expenses

 

2,645

 

2,594

 

916

Total

 

5,294

 

5,428

 

2,310

2013 Plan  
Summary of Restricted Shares Activities

A summary of the restricted shares activities under the 2013 Plan for the years ended December 31, 2018, 2019 and 2020 is presented below:

    

Number of 

restricted shares

Unvested at January 1, 2018

 

587,760

Vested

 

(525,140)

Forfeited

 

(28,445)

Unvested at December 31, 2018

 

34,175

Expected to vest at December 31, 2018

 

29,049

Unvested at January 1, 2019

 

34,175

Vested

 

(27,475)

Forfeited

 

(6,700)

Unvested at December 31, 2019

 

Expected to vest at December 31, 2019

 

2010 Plan  
Summary of Restricted Shares Activities

A summary of the restricted shares activities under the 2010 Plan for the years ended December 31, 2018, 2019 and 2020 is presented below:

Weighted-average

Number of 

grant-date fair

    

restricted shares

    

value

Unvested at January 1, 2018

 

1,272,150

 

  

Expected to vest at January 1, 2018

1,081,327

 

  

Granted

 

6,750,520

 

2.32

Vested

 

(267,630)

 

  

Forfeited

 

(1,103,000)

 

  

Unvested at December 31, 2018

 

6,652,040

 

  

Expected to vest at December 31, 2018

 

5,654,234

 

Granted

 

800,000

 

0.81

Vested

 

(1,296,540)

 

Forfeited

 

(971,000)

 

Unvested at December 31, 2019

 

5,184,500

 

Expected to vest at December 31, 2019

 

4,406,825

 

Vested

 

(965,500)

 

Forfeited

 

(2,959,000)

 

Unvested at December 31, 2020

 

1,260,000

 

Expected to vest at December 31, 2020

 

1,071,000

 

2014 Plan  
Summary of Restricted Shares Activities

A summary of the restricted shares activities under the 2014 Plan for the years ended December 31, 2018, 2019 and 2020 is presented below:

    

Number of 

restricted 

shares

Unvested at January 1, 2018

 

5,806,350

Vested

 

(2,086,450)

Forfeited

 

(243,250)

Unvested at December 31, 2018

 

3,476,650

Expected to vest at December 31, 2018

 

2,955,153

Unvested at January 1, 2019

 

3,476,650

Vested

 

(1,318,450)

Forfeited

 

(837,000)

Unvested at December 31, 2019

 

1,321,200

Expected to vest at December 31, 2019

 

1,123,020

Unvested at January 1, 2020

 

1,321,200

Vested

 

(228,200)

Forfeited

 

(1,067,000)

Unvested at December 31, 2020

 

26,000

Expected to vest at December 31, 2020

 

22,100