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SHARE-BASED COMPENSATION: (Tables)
 3 Months Ended
Jun. 30, 2013
SHARE-BASED COMPENSATION:  
Schedule of option activity

 

Number
of shares

 

Weighted-average
exercise price
per share

 

Weighted-average
remaining
contractual term
(in years)

 

Aggregate
intrinsic value
(in thousands)

 

Outstanding at March 31, 2013

 

8,193,248

 

$

20.85

 

 

 

 

 

Granted

 

301,508

 

$

21.46

 

 

 

 

 

Exercised

 

(316,088

)

$

15.43

 

 

 

$

2,292

 

Forfeited or cancelled

 

(125,415

)

$

31.37

 

 

 

 

 

Outstanding at June 30, 2013

 

8,053,253

 

$

20.92

 

3.63

 

$

32,715

 

 

 

 

 

 

 

 

 

 

 

 

 

Exercisable at June 30, 2013

 

6,813,217

 

$

21.92

 

2.68

 

$

23,701

 
Summary of stock options outstanding and exercisable

Following is a summary of stock options outstanding and exercisable as of June 30, 2013:

 

 

 

Options outstanding

 

Options exercisable

 

Range of
exercise price
per share

 

Options
outstanding

 

Weighted-average
remaining
contractual life

 

Weighted-average
exercise price
per share

 

Options
exercisable

 

Weighted-average
exercise price
per share

 

 

 

 

 

 

 

 

 

 

 

 

 

$   6.32 - $   9.62

 

68,298

 

4.59 years

 

$

8.60

 

68,298

 

$

8.60

 

$ 11.08 - $ 15.00

 

2,195,410

 

6.23 years

 

$

13.02

 

1,255,989

 

$

12.65

 

$ 15.10 - $ 19.82

 

1,533,823

 

2.78 years

 

$

16.68

 

1,524,041

 

$

16.67

 

$ 20.12 - $ 25.00

 

2,312,306

 

3.76 years

 

$

22.74

 

2,021,473

 

$

22.92

 

$ 25.98 - $ 29.30

 

1,095,763

 

1.20 years

 

$

26.69

 

1,095,763

 

$

26.69

 

$ 30.93 - $ 39.12

 

640,123

 

1.01 years

 

$

35.79

 

640,123

 

$

35.79

 

$ 40.88 - $ 62.06

 

207,530

 

1.53 years

 

$

43.40

 

207,530

 

$

43.40

 

 

 

8,053,253

 

3.63 years

 

$

20.92

 

6,813,217

 

$

21.92

 
Schedule of non-vested time-vesting restricted stock unit activity

 

Number
of shares

 

Weighted average
fair value per
share at grant
date
(in thousands)

 

Weighted-average
remaining
contractual term
(in years)

 

Outstanding at March 31, 2013

 

1,212,286

 

$

13.97

 

2.24

 

Granted

 

369,181

 

$

21.47

 

 

 

Vested

 

(375,955

)

$

13.20

 

 

 

Forfeited or cancelled

 

(48,218

)

$

15.17

 

 

 

Outstanding at June 30, 2013

 

1,157,294

 

$

16.58

 

2.74

 

 
Schedule of non-vested performance-based restricted stock unit activity

 

Number
of shares

 

Weighted average
fair value per
share at grant
date
(in thousands)

 

Weighted-average
remaining
contractual term
(in years)

 

Outstanding at March 31, 2013

 

863,721

 

$

11.52

 

1.63

 

Granted

 

218,825

 

$

23.21

 

 

 

Forfeited or cancelled

 

(22,334

)

$

16.55

 

 

 

Outstanding at June 30, 2013

 

1,060,212

 

$

13.82

 

1.66