XML 49 R33.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Employee Benefit Plans (Tables) | 12 Months Ended
--- | ---
Jun. 30, 2018
Share Based Compensation [Abstract] |
Shares Reserved for Issuance | The following are shares reserved for issuance (in thousands):
|  | June 30, 2018 |  |  | June 30, 2017 |
Employee stock options and awards outstanding |  |  | 9,957 |  |  |  | 9,726 |
2013 Employee Plan shares available for grant |  |  | 12,060 |  |  |  | 7,629 |
2014 Employee Stock Purchase Plan |  |  | 5,365 |  |  |  | 7,785 |
Total shares reserved for issuance |  |  | 27,382 |  |  |  | 25,140 |
Summary of Stock Option Activity | The following table summarizes stock option activity under all plans (shares and intrinsic value in thousands):
|  | Number of Shares |  |  | Weighted-Average Exercise Price Per Share |  |  | Weighted-Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value |
Options outstanding at June 30, 2017 |  |  | 3,062 |  |  | $ | 4.06 |  |  |  | 4.19 |  |  | $ | 15,868 |
Exercised |  |  | (854 | ) |  | $ | 4.52 |  |  |  |  |  |  |  |  |
Cancelled |  |  | (15 | ) |  | $ | 4.26 |  |  |  |  |  |  |  |  |
Options outstanding at June 30, 2018 |  |  | 2,193 |  |  | $ | 3.88 |  |  |  | 2.90 |  |  | $ | 8,996 |
Vested and expected to vest at June 30, 2018 |  |  | 2,193 |  |  | $ | 3.88 |  |  |  | 2.90 |  |  | $ | 8,996 |
Exercisable at June 30, 2018 |  |  | 1,980 |  |  | $ | 4.03 |  |  |  | 2.80 |  |  | $ | 7,781 |
Summary of Stock Award Activity | The following table summarizes stock award activity (shares and market value in thousands):
|  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value |  |  | Aggregate Fair Market Value |
Non-vested stock awards outstanding at June 30, 2017 |  |  | 6,664 |  |  | $ | 4.66 |  |  |  |  |
Granted |  |  | 4,595 |  |  | $ | 11.15 |  |  |  |  |
Vested |  |  | (2,956 | ) |  | $ | 3.79 |  |  |  |  |
Cancelled |  |  | (539 | ) |  | $ | 8.05 |  |  |  |  |
Non-vested stock awards outstanding at June 30, 2018 |  |  | 7,764 |  |  | $ | 8.60 |  |  | $ | 61,804 |
Schedule of PSUs Earned and Vested Based on Stock Price Appreciation (Stock Price PSUs) | The Stock Price PSUs represent the right to receive a number of shares of common stock up to one and one-third of the target number of Stock Price PSUs. They are earned and vest as follows based on the average adjusted closing stock price of the Company’s common stock for the 90 days ending as of May 4, 2020, subject to the grantees’ continued service through the certification of performance:
Average adjusted closing stock price |  | Shares earned
at least $8.96 but less than $11.63 |  | One-third
at least $11.63 but less than $13.15 |  | Two-thirds
at least $13.15 but less than $16.56 |  | 100%
$16.56 or more |  | One and one-third
Schedule of PSUs Earned and Vested Based on Total Stockholder Return Relative to S&P Small Cap 600 Capped Information Technology Index (TSR PSUs) | The TSR PSUs represent the right to receive a number of shares of common stock up to 130% of the target number of TSR PSUs. They are earned and vest as follows based on the positive percentage point difference between the Company’s total stockholder return and the total stockholder return for the S&P Small Cap 600 Capped Information Technology Index over the performance period from May 4, 2017 to May 4, 2020, subject to the grantees’ continued service through the certification of performance:
Level |  | Percentage point difference between Company TSR and index TSR |  |  | Shares earned |
Threshold |  |  | 0 | % |  |  | 0 | %
Target |  |  | + 25 | % |  |  | 100 | %
Maximum |  |  | + 35 | % |  |  | 130 | %
Summary of PSUs with Market or Performance Based Conditions Granted | The following table summarizes PSU’s with market or performance based conditions granted and the number of awards that have satisfied the relevant market or performance criteria in each period (in thousands):
|  | Fiscal year 2018 |  |  | Fiscal year 2017 |  |  | Fiscal year 2016 |
Performance awards granted |  |  | 714 |  |  |  | 2,106 |  |  |  | 695 |
Performance awards earned |  |  | 566 |  |  |  | 839 |  |  |  | 582 |
Schedule of Recognized Share-based Compensation Expense | Share-based compensation expense recognized in the financial statements by line item caption is as follows (in thousands):
|  | Year Ended |
|  | June 30, 2018 |  |  | June 30, 2017 |  |  | June 30, 2016 |
Cost of product revenue |  | $ | 564 |  |  | $ | 333 |  |  | $ | 882 |
Cost of service revenue |  |  | 1,131 |  |  |  | 589 |  |  |  | 1,041 |
Research and development |  |  | 7,642 |  |  |  | 3,312 |  |  |  | 4,559 |
Sales and marketing |  |  | 9,843 |  |  |  | 4,253 |  |  |  | 4,633 |
General and administrative |  |  | 8,453 |  |  |  | 4,146 |  |  |  | 3,677 |
Total share-based compensation expense |  | $ | 27,633 |  |  | $ | 12,633 |  |  | $ | 14,792 |
Schedule of Fair Value Assumptions for Stock Options and Employee Stock Purchase Plan Awards | The fair value of each share purchase option under the Company's 2014 ESPP is estimated on the date of grant using the Black-Scholes-Merton option valuation model with the weighted average assumptions noted in the following table. The expected term of the 2014 ESPP. The risk-free rate is based upon the estimated life and is based on the U.S. Treasury yield curve in effect at the time of grant. Expected volatility is based on the historical volatility on the Company’s stock. The weighted-average estimated per share fair value of shares purchased under the 2014 ESPP in fiscal years 2018, 2017 and 2016, was $3.25, $1.24 and $0.92, respectively.
|  | Stock Option Plan |  |  | Employee Stock Purchase Plan |
|  | Year Ended |  |  | Year Ended |
|  | June 30, 2017 |  |  | June 30, 2016 |  |  | June 30, 2018 |  |  | June 30, 2017 |  |  | June 30, 2016 |
Expected life |  | 4.0 years |  |  | 4.2 years |  |  | 0.5 years |  |  | 0.5 years |  |  | 1.2 years |
Risk-free interest rate |  |  | 1.78 | % |  |  | 1.17 | % |  | 1.64%–1.15% |  |  |  | 0.40 | % |  |  | 0.33 | %
Volatility |  |  | 52 | % |  |  | 50 | % |  |  | 42 | % |  | 40%–37% |  |  |  | 58 | %
Dividend yield |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | % |  |  | — | %

X
- Definition Schedule of performance restricted stock units earned and vested based on positive percentage point difference between total stockholder return relative with index. + References No definition available. + Details
Name: | extr_ScheduleOfPerformanceRestrictedStockUnitsEarnedAndVestedBasedOnPositivePercentagePointDifferenceBetweenTotalStockholderReturnRelativeWithIndexTableTextBlock
Namespace Prefix: | extr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of performance restricted stock units earned and vested based on stock price appreciation. + References No definition available. + Details
Name: | extr_ScheduleOfPerformanceRestrictedStockUnitsEarnedAndVestedBasedOnStockPriceAppreciationTableTextBlock
Namespace Prefix: | extr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Shares reserved for issuance. + References No definition available. + Details
Name: | extr_SharesReservedForIssuanceTableTextBlock
Namespace Prefix: | extr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration