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Stock-based Compensation and Stockholders' Equity (Tables)
 12 Months Ended
Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of assumptions used to estimate fair value of stock options granted using Black-Scholes option pricing model
The fair value of stock option grants for the years ended June 30, 2016, 2015 and 2014 was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions:
 
 
Years Ended June 30,
 
2016
 
2015
 
2014
Risk-free interest rate
1.37% - 1.57%

 
1.35% - 1.76%

 
1.53% - 1.90%

Expected life
5.31 - 5.33 years

 
5.40 - 5.44 years

 
5.49 - 5.58 years

Dividend yield
—
%
 
—
%
 
—
%
Volatility
46.65% - 50.89%

 
46.93% - 49.31%

 
43.48% - 50.07%

Weighted-average fair value
$
12.07

 
$
12.72

 
$
7.23
Schedule of stock-based compensation expense
The following table shows total stock-based compensation expense included in the consolidated statements of operations for the years ended June 30, 2016, 2015 and 2014 (in thousands):
 
 
Years Ended June 30,
 
2016
 
2015
 
2014
Cost of sales
$
1,098

 
$
901

 
$
941

Research and development
10,178

 
8,643

 
6,783

Sales and marketing
1,841

 
1,553

 
1,260

General and administrative
3,014

 
2,602

 
2,078

Stock-based compensation expense before taxes
16,131

 
13,699

 
11,062

Income tax impact
(4,503
)
 
(3,791
)
 
(2,426
)
Stock-based compensation expense, net
$
11,628

 
$
9,908

 
$
8,636
Summary of stock option activity
The following table summarizes stock option activity during the years ended June 30, 2016, 2015 and 2014 under all plans:
 
 
 
Options
Outstanding
 
Weighted
Average
Exercise
Price per
Share
 
Weighted
Average
Remaining
Contractual
Term
(in Years)
 
Aggregate
Intrinsic
Value
(in thousands)
Balance as of June 30, 2013 (8,731,818 shares exercisable at weighted average exercise price of $9.66 per share)
 
12,206,178

 
$
10.83

 
 
 
 
Granted (weighted average fair value of $7.23)
 
1,808,006

 
15.87

 
 
 
 
Exercised
 
(2,863,878
)
 
8.36

 
 
 
 
Forfeited
 
(244,704
)
 
14.25

 
 
 
 
Balance as of June 30, 2014 (7,558,631 shares exercisable at weighted average exercise price of $11.05 per share)
 
10,905,602

 
12.24

 
 
 
 
Granted (weighted average fair value of $12.72)
 
1,093,920

 
28.28

 
 
 
 
Exercised
 
(2,124,401
)
 
10.99

 
 
 
 
Forfeited
 
(172,278
)
 
18.68

 
 
 
 
Balance as of June 30, 2015 (7,208,475 shares exercisable at weighted average exercise price of $12.24 per share)
 
9,702,843

 
14.21

 
 
 
 
Granted (weighted average fair value of $12.07)
 
316,580

 
26.86

 
 
 
 
Exercised
 
(1,013,430
)
 
12.03

 
 
 
 
Forfeited
 
(45,126
)
 
19.45

 
 
 
 
Balance as of June 30, 2016
 
8,960,867

 
$
14.88

 
5.20
 
$
93,661

Options vested and expected to vest at June 30, 2016
 
8,887,498

 
$
14.79

 
5.18
 
$
93,566

Options vested and exercisable at June 30, 2016
 
7,495,131

 
$
13.35

 
4.63
 
$
87,796
Schedule of significant ranges of outstanding and exercisable stock options
Additional information regarding options outstanding as of June 30, 2016, is as follows:
 
 
 
Options Outstanding
 
Options Vested and Exercisable
Range of
Exercise Prices
 
Number
Outstanding
 
Weighted-
Average
Remaining
Contractual
Term (Years)
 
Weighted-
Average
Exercise
Price Per
Share
 
Number
Exercisable
 
Weighted-
Average
Exercise
Price Per
Share
$4.63 - 7.91
 
933,694

 
2.41
 
$
6.29

 
933,694

 
$
6.29

7.94 - 9.24
 
924,705

 
3.29
 
8.61

 
908,080

 
8.60

9.72 - 10.66
 
1,309,468

 
3.69
 
10.39

 
1,245,451

 
10.41

10.68 - 12.50
 
907,879

 
5.36
 
11.78

 
846,813

 
11.79

12.68 - 14.23
 
1,307,560

 
5.20
 
13.76

 
1,138,326

 
13.69

15.22 - 17.29
 
923,677

 
5.51
 
16.32

 
923,677

 
16.32

17.69 - 18.93
 
1,134,968

 
6.36
 
18.56

 
829,328

 
18.57

20.70 - 26.75
 
1,125,706

 
8.01
 
24.83

 
562,044

 
24.04

27.28 - 37.06
 
357,710

 
8.99
 
32.80

 
84,593

 
35.09

39.19
 
35,500

 
8.62
 
39.19

 
23,125

 
39.19

$4.63 - $39.19
 
8,960,867

 
5.20
 
$
14.88

 
7,495,131

 
$
13.35
Summary of restricted stock unit activity
The following table summarizes restricted stock unit activity during the years ended June 30, 2016 and 2015 under all plans: 
 
 
Restricted Stock Units
Outstanding
 
Weighted
Average
Grant-Date Fair Value per Share
 
Aggregate
Intrinsic
Value
(in thousands)
Balance as of June 30, 2014
 
—

 
$
—

 
 
Granted
 
374,720

 
$
35.82

 
 
Vested
 
(14,685
)
 
$
35.23

 
 
Forfeited
 
(56,711
)
 
$
34.90

 
 
Balance as of June 30, 2015
 
303,324

 
$
36.02

 
 
Granted
 
845,870

 
$
28.45

 
 
Vested
 
(177,707
)
 
$
31.80

 
 
Forfeited
 
(44,504
)
 
$
29.72

 
 
Balance as of June 30, 2016
 
926,983

 
$
30.23

 
$
23,036
Summary of restricted stock award activity
The following table summarizes the Company’s restricted stock award activity for the year ended June 30, 2014:
 
 
Restricted Stock Awards
 
Number
of Shares
 
Weighted
Average
Grant Date
Fair Value
Per Share
Nonvested stock at June 30, 2013
179,641

 
$
10.66

Granted
3,500

 
14.23

Vested
(183,141
)
 
10.73

Forfeited
—

 
—

Nonvested stock at June 30, 2014
—

 
—