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Stock-based Compensation and Stockholders' Equity (Tables) | 9 Months Ended
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Mar. 31, 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 three and nine months ended March 31, 2016 and 2015 was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions:
| Three Months Ended March 31, |  | Nine Months Ended March 31,
| 2016 |  | 2015 |  | 2016 |  | 2015
Risk-free interest rate | 1.38% - 1.48% |  |  | 1.35% - 1.58% |  |  | 1.38% - 1.57% |  |  | 1.35% - 1.76% |
Expected term | 5.31 years |  |  | 5.40 years |  |  | 5.31 - 5.33 years |  |  | 5.40 - 5.44 years |
Dividend yield | — | % |  | — | % |  | — | % |  | — | %
Volatility | 49.09% - 50.89% |  |  | 47.60% - 48.26% |  |  | 47.06% - 50.89% |  |  | 46.93% - 49.31% |
Weighted-average fair value | $ | 12.99 |  |  | $ | 15.92 |  |  | $ | 12.04 |  |  | $ | 12.59 |
Schedule of stock-based compensation expense | The following table shows total stock-based compensation expense included in the condensed consolidated statements of operations for the three and nine months ended March 31, 2016 and 2015 (in thousands):
| Three Months Ended March 31, |  | Nine Months Ended March 31,
| 2016 |  | 2015 |  | 2016 |  | 2015
Cost of sales | $ | 294 |  |  | $ | 222 |  |  | $ | 792 |  |  | $ | 651 |
Research and development | 2,549 |  |  | 2,255 |  |  | 7,423 |  |  | 6,148 |
Sales and marketing | 491 |  |  | 369 |  |  | 1,330 |  |  | 1,148 |
General and administrative | 552 |  |  | 720 |  |  | 2,223 |  |  | 1,780 |
Stock-based compensation expense before taxes | 3,886 |  |  | 3,566 |  |  | 11,768 |  |  | 9,727 |
Income tax impact | (1,191 | ) |  | (1,355 | ) |  | (3,290 | ) |  | (2,747 | )
Stock-based compensation expense, net | $ | 2,695 |  |  | $ | 2,211 |  |  | $ | 8,478 |  |  | $ | 6,980 |
Summary of stock option activity | The following table summarizes stock option activity during the nine months ended March 31, 2016 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, 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 $12.04) |  | 279,650 |  |  | $ | 26.61 |  |  |  |  |
Exercised |  | (897,424 | ) |  | $ | 11.88 |  |  |  |  |
Forfeited |  | (35,531 | ) |  | $ | 18.85 |  |  |  |  |
Balance as of March 31, 2016 |  | 9,049,538 |  |  | $ | 14.81 |  |  | 5.43 |  | $ | 174,856 |
Options vested and expected to vest at March 31, 2016 |  | 8,956,079 |  |  | $ | 14.70 |  |  | 5.40 |  | $ | 174,044 |
Options vested and exercisable at March 31, 2016 |  | 7,346,160 |  |  | $ | 13.17 |  |  | 4.78 |  | $ | 153,798 |
Summary of restricted stock unit activity | The following table summarizes restricted stock unit activity during the nine months ended March 31, 2016 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, 2015 |  | 303,324 |  |  | $ | 36.02 |  |  |
Granted |  | 614,560 |  |  | $ | 28.35 |  |  |
Vested |  | (102,918 | ) |  | $ | 33.24 |  |  |
Forfeited |  | (33,060 | ) |  | $ | 30.52 |  |  |
Balance as of March 31, 2016 |  | 781,906 |  |  | $ | 30.59 |  |  | $ | 26,647 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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