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Share-based compensation (Tables)
6 Months Ended
Jun. 30, 2017
Share-based compensation  
Schedule of share-based compensation expense

 

 

Three months ended June 30,

 

Six months ended June 30,

 

 

 

2017

 

2016

 

2017

 

2016

 

 

 

(in thousands)

 

Cost of sales

 

$

500

 

$

486

 

$

1,157

 

$

1,032

 

Research and development

 

708

 

940

 

1,137

 

2,039

 

Selling, general, and administrative

 

3,368

 

2,576

 

6,468

 

5,319

 

Restructuring

 

841

 

 

841

 

 

Acquisition costs

 

4,203

 

 

4,203

 

 

 

 

 

 

 

 

 

 

 

 

Total

 

$

9,620

 

$

4,002

 

$

13,806

 

$

8,390

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of stock option activity

 

 

Number of

 

Weighted
Average

 

 

 

Shares

 

Exercise Price

 

 

 

(in thousands)

 

 

 

Balance - December 31, 2016

 

1,576

 

$

35.18

 

Granted

 

 

 

Exercised

 

(18

)

30.03

 

Expired or forfeited

 

(120

)

37.14

 

 

 

 

 

 

 

Balance - June 30, 2017

 

1,438

 

35.08

 

 

 

 

 

 

 

 

Summary of restricted and performance shares activity

 

 

 

 

Weighted
Average

 

 

 

Number of

 

Grant Date

 

 

 

Shares

 

Fair Value

 

 

 

(in thousands)

 

 

 

Balance - December 31, 2016

 

1,949

 

$

23.85

 

Granted

 

649

 

29.67

 

Assumed from Ultratech

 

338

 

31.75

 

Vested

 

(549

)

25.98

 

Forfeited

 

(130

)

25.95

 

 

 

 

 

 

 

Balance - June 30, 2017

 

2,257

 

25.94